Author Archive: admin

Best Gaming Laptops under 1000 Dollars

A gaming laptop tends to have high-end processors, graphics cards, cooling systems, and displays which often result in its high price, but with the development of hardware, the current mid-range and high-end graphics are good enough for us to play some mid-range games smoothly. If you do not pursue the ultimate gaming experience, these mid-range graphics cards can even allow you to play some demanding games smoothly at lower resolutions. $1000 is a watershed of the gaming laptop, most of which, with midrange graphics, are distributed around this price. What follows is a recommendation of several popular gaming laptops within the $1,000 range and with a high performance-cost ratio.

(more…)

Best CPU 2017 Buying Guide: Everything you need to know when choosing a processor

processor

Whether you decide to upgrade your computer’s processor, or if you want to choose all of the components and build a PC yourself, not only will you save some euros, but you will also have more knowledge about what you purchase and about the components of your PC, or at least, everything you need know when choosing a processor.

To upgrade a computer, it isn’t always necessary to replace it. Sometimes, replacing the chip for another more powerful one is enough, although it will always be your motherboard that determines the type and model of processor it supports.

Instead, if you choose to select the components and build your own PC, you will have to keep in mind some factors to determine which is the ideal processor for your setup.

(more…)

AMD Ryzen 7 1800X vs Intel Core i7-6900K under Sniper Elite 4

We have here the first reliable performance test of an AMD Ryzen CPU, specifically the Ryzen 7 1800X, with 8 Zen cores and 16 threads at a Base/Turbo frequency of 3.60/4.00 GHz with a TDP of 95W and a price of 499 dollars, which was faced with the Intel Core i7-6900K, consisting of 8 Broadwell cores with 16 threads at Base/Turbo frequencies of 3.20/4.00 GHz with a TDP of 140W and a price close to 1021 dollars.

http://pc4u.org/wp-content/uploads/2017/03/AMD-Ryzen-7-1800X.jpg

To fight this duel, the game Sniper Elite 4 was used accompanied by a CrossFire configuration of two Radeon RX 480. For the test to reflect the most reliable performance possible, the character was positioned exactly at the same point on the map with the camera focusing on the same point, revealing how, with both PCs running the game at 4K resolution, the Ryzen 7 1800X is a 6.6% faster, while the average running game translates to be a 6.7% more powerful average, not bad having 45W less TDP and costing practically half.

(more…)

Best Gaming Laptop under 600

Serious gamers may laugh at the idea that they could get a competent gaming laptop under $600. It’s true that these budget-friendly computers may not be able to play the latest games on the highest setting, but they can’t deliver enough power for more casual gamers. If you enjoy older games or don’t care about the highest definition graphics, many laptops under $600 can be found.

This page covers some of these amazing machines that won’t break the bank but will still deliver enough power to have plenty of fun. For under $600 you will get a midr-ange GPU like the GTX 940M, Radeon R7 M360 and processors like the intel i5, AMD A8 and A10 quad-core.

(more…)

Best Monitor for Macbook Pro (Retina) / Mac Mini / Macbook Air

Tutorial about how to choose a monitor to combine with a Mac computer. There are many models available, with pretty different prices and features. A short review about the main technologies, certifications, reference standards to consider.

The choice of a Monitor to use with a computer is not an easy task: there are many models for each price range, apparently similar but often with functions and features even much different from each other…So what are the best 2016 monitors to match a Mac computer with? And which parameters should I consider to choose them?

Keeping the average Mac user as parameter in mind, we’ve thought to explain the elements to consider in order to combine a monitor with a computer, which can be a Mac Mini, a Mac Pro, but also an additional display for a MacBook Air or a MacBook Pro. There’s really an unlimited number of them, with displays suitable for people who professionally work with photos and videos, and other ones realized for design, yet other ones for gaming and multimedia, or pretty generic and cheap ones, suitable for people who do an office job (writing, emailing, web surfing etc.). We’ll shortly see the main technologies, certifications and the reference standards to consider.

Which connections should a Monitor be equipped to work with a Mac?

All pretty recent Mac computers provide, as standard, a Mini DisplayPort port (Thunderbolt); you can use this one to connect monitors that integrate this port: DVI, HDMI, or the old VGA monitors can be connected with specific adapters. Apple and third party producers provide Mini DisplayPort-DVI, Mini DisplayPort-VGA, Mini DisplayPort/DVI-Dual-Link and Mini DisplayPort-HDMI adapters. The current Mac Pro can handle without any problem up to three displays with 5K resolution and six Thunderbolt displays (we redirect you to this support document by Apple to know details about the types of Ultra HD monitor supported and how to set them up).

The Mac Mini supports up to two 2560 x 1600 pixels screens, has digital Thunderbolt video output. The Mini DisplayPort output is native; for the other ones (DVI, VGA and DVI Dual-Link) you need to use adapters. The HDMI video output supports 1080p resolutions up to 60Hz, 3840 x 2160 at 30Hz and 4096 x 2160 at 24Hz. It’s possible to use the DVI output through an HDMI to DVI adapter.

And what about MacBook 12”?

MacBook 12” is a special case; this, actually, has an USB-C port to use for recharge but also as a native DisplayPort 1.2 output or, through multiport USB-C to VGA adapter (to be bought separately) or to connect displays with HDMI port by using the digital multiport USB-C to AC adapter (to buy separately). It’s possible, in any case, to use the Extended Desktop feature (the external monitor is seen as independent) or Screen Duplication, supporting the native resolution on the integrate display and up to 3840 x 2160 pixels on the external monitor, at the same time.

Multiport USB-C to VGA adapter

You can find, on the web, a few “tricks” that explain how to drive a 4K resolution monitor to 60Hz by using just one cable, a better frame rate to reduce that “micro-jerky” sensation and offer an higher stability perception of pictures on screen. Apple has probably limited the support no to make the work heavier to the Intel HD Graphics 515 of Intel Core M, and therefore we don’t know (yet) if this trick can cause damages to the machine in the long run. If you decide to implement this customization, you do it at your own risk.

The diagonal and the “format”

Monitors, just like TVs, get measured in inches. The value refers to the screen diagonal length (from left-bottom to top-right). One inch equals to 2,54 cm. While looking for a monitor, we surely will hear about “format”.

The “16:9” caption, for example, indicates the proportion (or relationship) between the base and height sizes of the rectangle in which pictures are displayed. If the base is 16 cm, height will be 9cm; obviously, these dimensions get increased when the screen size increases, but the proportion will always be the same.

The screen size is indicated by providing the diagonal length, which lets us have an idea about the overall size of the display, considering the rectangle shape and the fixed proportion between base and height.

Monitor

Resolution

Among the specs you should consider when choosing a monitor, the first one is certainly the resolution. By this term we refer to the details precision that the system is able to display, as a direct consequence of the amount of the single dots composing the picture on the screen. The resolution depends on both the screen dimensions and the dots spacing. The parameter we’re talking about measures the number of pixels (width and height) that you can see on the screen.

The term 1080p, for example, indicates displays with a resolution of 1920 pixels (horizontal width) x 1080 pixels (vertical height).

Higher resolution means a higher amount of pixels that is possible to view on the screen, and same for windows and other elements. The resolution of many LCD Widescreen 24” monitors is Full HD (1920 x 1080 pixels), the same as HDTV TVs for the 1080p or 1080i modes. New generation monitors integrate the support for the “4K“resolution, in other words 4096 x 2160 pixel; yet other ones support the lower “Ultra HD” resolution: 3840 x 2160 pixel, or 2160p.

The 5K resolution is integrated is larger screens (usually 27”) and it’s 5120 x 2880 pixels. The typical maximum resolution for nowadays monitors are: 1920 x 1080 pixels or 2560 x 1600 pixels; other higher ones are starting to be found on consumer models, but mostly on professional models.

Ports

Ports Many 4K or 5K monitors can be connected to a Mac through Thunderbolt or HDMI cables. For monitors that have an integrated DisplayPort you can just use a thunderbolt cable; some of these ones integrates a DisplayPort port that requires a DisplayPort or Mini DisplayPort cable. These last ones are very cheap and can be found for a few tens of euros on Amazon.

Mac sold between 2011 and 2013 use the first Thunderbolt generation; this ones support DisplayPort 1.1a technology, offering a maximum throughput of 8,64 Gbps and virtually able to drive any 4K or 5K display to a refresh rate of 60Hz.

What is Refresh Rate?

Refresh speed indicates the number of times, in a second, in which the picture gets redrawn on the screen. It’s a parameter measured in Hertz (Hz) and let you evaluate the actual stability of the picture on the screen (when the refresh rate gets higher, the eyes effort caused by the flickering decreases). Typical frequencies for monitors are: 25Hz, 30Hz and 60Hz.

http://pc4u.org/wp-content/uploads/2016/10/mac-monitor-5.png

OS X compatibility with high resolutions

Newest OS X versions support DisplayPort monitors with 4K resolution through the Single-Stream Transport technology at 30Hz and 60Hz on the following Mac computers: Mac Pro (late 2013), iMac (Retina 4K, 21,5 inches, late 2015), MacBook Pro (Retina 5k, 27 inches, late 2014 and newer versions), MacBook Pro (Retina, 15 inches, half 2015) with AMD Radeon M370X.

The connection of 4K monitors with resolution of 3840 x 2160 pixels is supported at 60Hz on the following Mac computer: MacBook Pro (Retina, 13 inches, early 2015), MacBook Pro (Retina, 15 inches, half 2014 and newer versions), Mac Pro (late 2013), iMac (Retina 4K, 21,5 inches, late 2015), MacBook Pro (Retina 5K, 27 inches, late 2014 and newer versions), MacBook Air (early 2015).

Color Spaces

Color Spaces

In the technical descriptions of some monitors, you can find some chromaticity diagrams, a Commission Internationale de l’Eclairage (CIE) that shows the color space manageable by the screens. Without going too deep in technical details (of which we’re going to talk maybe later, with another article), the range of these figures allows to know mathematical models of perception, indicated as color spaces and shown in the form of signs like XYZ (it’s the CIE 1931 model), xyY, Lab, Luv.

Colors are indicated through two chromatic variables (x and y), put in order on the Cartesian axis of a plan where there’s a “U” curve. On this curve, there are “pure” colors (technically those belonging to the visible spectrum, from red to violet); inside the curve, we can find the shades in a range from pure colors to ideal white (in the center). These diagrams let you make evaluations under the tone ranges (gamut) perspective, and to understand how many of these a device can reproduce. Professional monitors cost more because usually they’re able to offer higher gamut, compared to the cheaper ones.

Calibration

To get the best color matching possible, monitors get calibrated at the factory, but the final performance depends on several factors: the GPU used, the panel used, the enlightenment mode of the work environment etc. OS X integrates, as standards, features that let you calibrate monitors via software by creating custom profiles. The operating system and other softwares that use Apple’s ColorSync technology can take advantage of these profiles and reproduce the image colors more accurately.

Monitors for professional environments (photography, video, desktop publishing) should be regularly calibrated through a colorimeter, a device that offer features to let you set contrast, brightness, get the brightness response curve, response curve and the point of best white.

Colorimeters (factory ones, or available as an optional with some professional monitors) let you directly measure the radiation of both the display and the environment light, generating custom profiles. This tool lets you measure the gamut and evaluate several parameters that define the uniformity of the tonal response and the panel brightness.

http://pc4u.org/wp-content/uploads/2016/10/mac-monitor-7.jpg

Panels’ technology

By Panels’ Technology they mean the type of liquid crystals and the backlight system used. They’re two parameters that define the amount and the width of the reproducible chromatic range, in addition to the precision the input signal gets turned in the final tones with.

IPS

These technologies also influence a few factors, such as brightness, contrast and the visual angle, that is an arch built on the perpendicular of the panel, within which colors should not clearly change.

Most of the panels used for modern monitors are divided in: Tn (Twisted Nematic) and IPS (In Plane Switching). The first one available on the market in a long time, it’s the cheapest but this doesn’t necessarily mean it’s inferior, compared to the current technology. With the Tn panels, it’s possible to get refresh rates that are higher than the IPS ones, even reaching speeds of 1ms vs. the others’ average 5ms. Refresh rate is important, especially with softwares (such as games) that include pictures in movement.

IPS monitors, anyway, offer several advantages about colors reproduction, their texture, and about the wider range of visual angle. TN panels, actually, are typically affected by an higher directionality in the color rendering, in the brightness (especially on the vertical axis). The most expensive IPS panels let you view billions of colors with a real 10 bits codification, covering the 99% of the sRGB spectrum.

The finish: Glossy and Matte

At the “finish” entry in the description of a display, you’ll find terms like “matte” and “glossy”. These refer to the treatment of the terminal part of the panel that could be a non-glare or a glossy one. The non-glare treatment let you reduce the influence of the environmental light, by limiting the glare on the screen, the second one allows to get more vivid and shiny colors but doesn’t reduce the glare.

Macbook Pro

Glossy screens’ flaw is that they result less visible, due to the glare, in pretty bright environments, but, at the same time, offering more vivid and clear colors; the matte ones usually work better, even in direct light source conditions. Screens that have these last features are preferred especially by users working into Desktop Publishing sector and who find themselves to manage the color matching on non-glossy prints: a glossy screen, in many cases, fakes the final result perception. Other potential users of the matte screen are those who work in conditions of over-lighting and to whom the reflecting surface could result bothering.

Consumptions and certifications

Energy Star

Not to underestimate are the parameters that refer to energy consumptions. It’s true that a very huge part of the modern displays has a pretty low consume level, but from a model to another there are differences that you could notice by measuring the consumptions in standby (without any input signal). Consumptions get higher depending on the diagonal, the brightness settings and features that set the backlight automatically.

There are several rules for energy certifications and the most important acronyms and entries are: Energy Star, EPEAT, ROHS and TCO. The presence of one or more of these acronyms guarantees the respect of specific rules, but also parameters that consider the materials management and the ease of the components separation when it’s the moment to recycle.

Thunderbolt and HDMI

Mac’s Thunderbolt port supports displays with a refresh rate up to 60Hz; Mac computers with HDMI ports let you manage displays with a refresh rate of 24Hz or 30Hz due to specific limitations of the HDMI 1.4 standards. Apple hasn’t released Mac computers with integrated HDMI 2.0 support yet, and this last one is able to drive 4K and 5K displays up to 60Hz refresh rates.

Newest Mac computers (starting from late 2013) integrate Thunderbolt 2 and the support for the DisplayPort 1.2 technology; the supported bandwidth has been twofold increased, allowing (as long as you’ve got an appropriate VGA) to manage multiple monitors.

Intel announced that Thunderbolt 3 will support a throughput of 40 Gbps on two channels and will be equipped with USB-C connectors instead of the Mini DisplayPort ones. Future Mac computers with this port will still support the DisplayPort 1.2 technology, letting you manage without any problem up to three 4K monitors at 60Hz, or a display with a 5K resolution at 60Hz.

Thunderbolt “cascade” connection

Some monitors with DisplayPort/Thunderbolt connection let you link together multiple monitors to the same video output. With a Mac Pro, for example, it’s possible to plug up to six monitors to the same computer’s video output, a technique called “daisy-chaining”, a “circle” that lets you take advantage of multiple displays, independent from each other, without losing the pictures quality.

Additional inputs/outputs

Some monitors provide inputs and outputs that don’t have anything to do with the display. For example, on some of them, there are some USB ports that work almost as a hub connected to the computer. And on other ones you can see audio inputs that, combined with standard integrated speakers, let you amplify the computer’s audio output, requiring no additional speakers, even if, normally, the amplification is about a few watts.

How to choose?

After this close examination, which are the parameters to consider when buying a display? It’s not easy to answer because, obviously, it mostly depends on the destination use of it. Among the parameters to consider: supported resolution, response time, diagonal length, the finish, supported color range, consumptions and obviously the price.

Elizo CG2420-BK

The Elizo CG2420-BK boasts a LED backlight, 1500:1 contrast, a 400 cd/sm, Adobe RGB 99% space covering, DCI-P3 98%, integrated sensor and auto-calibrate feature. Equipped with DisplayPort, DVI-D and HDMI inputs.

Not to underestimate, is also the number and the type of available connections, such as DisplayPort, HDMI and DVI, noticing that in the first two cases there are standards that support the Single-Stream Transport (SST) and not the Multi-Stream Transport (MST).

All the Mac computers with Thunderbolt 2 support 4K monitors at 30Hz in SST mode (Single Stream Support). Some of them support the 4K monitors at 60Hz in MST mode (Multi Stream Transport) offering an higher refresh rate of the pictures. Other parameters that you might consider are: hooking possibility (it’s possible with monitors equipped with VESA port), warranties about factory faws (even if it would be about a few pixels) offered by some producers, the consumptions and, finally, your budget.

The best monitors for Macbook Pro of 2016

Some monitors are great for videos and photos handling, other ones for gaming and media contents, yet other ones (usually the cheapest ones) for small office or home office contexts. Consider the several parameters above, the cost and then choose the one you think is the most appropriate for your needs.

We can divide monitors in three categories: “Small and home office”, “Gaming and media” and “Professional photos and videos”. Set forth, you’ll find a few indications about the best monitors selected by international technical magazines during the last months, very appreciated by users who bought them on Amazon.

Gaming

For the gaming, IPS panels are better for games in which it’s possible to appreciate the sceneries and the colors; if you’re a fan of first person shooters, Tn panels (Twisted Nematic) are a good choice too.

We recommend you reading our another article to choose a monitor for gaming:

Best Gaming Monitor

Office

As regards “Small and Home Office”, this category includes devices intended for a long use purpose; in this case, it’s better to opt for displays that let you set height, inclination and rotation, comfortable options for those who use Word, Excel, Email and PDF softwares all day long.

In this area we can suggest:

  • Dell Ultrasharp U2417HJ
  • Asus ProArt PA248Q Monitor
  • ASUS MG28UQ 28″ 4K/UHD

Design/Professional Photos and Videos

This category includes devices that are suitable for professionals who work with pictures (for example photographers and videomakers) who need monitors able to accurately reproduce pictures and colors; in the past, the costs for monitors purchased by these professionals were out of reach, but now the prices are lower than before, and it’s possible to buy great displays with a 27” diagonal even at less -than 1000 dollars.

As regards the design, CAD professionals prefer very large screens where the color depth is not really too important. For this sector you can find some great displays of 27”, perfect to manage resolutions like 2560 x 1440 pixels, but also 30” with even higher resolutions, ideal for CAD contexts; IPS panels work better, along with the ones which cover the Adobe RGB color space.

We recommend you reading our another article to choose a monitor for photo and video editing:

Best Monitor for Photo Editing and Photography

PlayStation VR: How to Set Up PSVR

Only two days are left till the launch of PlayStation VR. Yesterday, we already told you what you need to dive right into the world of PSVR and what games you can preorder on Amazon. Today, we are going to show you how to quickly set up your PSVR system. Sony has produced three short videos on this topic which make sifting through the manual all but unnecessary.

How to Set Up PSVR

In the first video, Sony shows you what comes in the box. You should check if your headset comes with all the necessary accessories upon arrival and nothing is missing. This happens very rarely but it’s still worth checking.

(more…)

VR Glossary

What’s the difference between Virtual Reality and Augmented Reality? What does HMD mean, and what the heck is an omnidirectional treadmill? What does latency and screen refresh rate have to do with it? In our Virtual Reality glossary, we’ll explain the most important terms from the world of VR.

OSVR

The most important terms in VR explained

3D-Audio: 360°sound for VR headsets. The sounds will be played back through the headphones to match what’s happening in game.

Augmented Reality (AR): In Augmented Reality, the real and virtual world are being combined. Images or videos from the real world are combined with additional information in real time.

(more…)

How to create, delete, and manage user accounts in Windows 10?

Although perhaps the most usual is to use Window with a single user account, it is often necessary to have multiple accounts, especially on shared computers. This makes things a lot easier when we share the computer with our siblings, roommates or if underage users have access to the PC and we want to control their access.

For this, Microsoft’s operating system offers the possibility to create different users accounts, to manage, eliminate, or to give them certain privileges. That is why, we are going to share below a small guide on user accounts in Windows 10, how to create a new account, enable a guest account, change to administrator account, delete accounts, etc.

Create a new user account and rename accounts

If you want to create a new user account, then the first thing you have to do is go to the Windows 10 Settings page from the Start menu and select Accounts. Once you do this, enter the Family & other people section and you will see in the right panel the options of adding a relative or another person. If you want to create an account for anyone then choose the second option, then enter their email account, click next and it’s done. If you do not have access data for that person, then you can click on this option and indicate the email and password that you want to use to log in to the system.

Windows 10 account

If on the contrary you want to create a family account, then select the add family option. This makes it possible for all family members to set up their own login and desktop or to make children not have access to certain websites, applications, games or even set time limits for using the PC.

(more…)

Best Antivirus for Windows

Regarding antiviruses, there are a plethora of logical options. We all use the internet differently and inn order to help you choose, we’ll determine which security suite suits which user profile.

After closely analyzing most of 2017’s suites, one thing is for certain: these solutions have a rather limited impact on performances, and their efficiency is superior to the basic defense tools built into Windows 10.

We have noticed a trend: suites include more features, including PC optimization, and take into account the diversity of devices in the household. But, besides BitDefender, all the publishers must do better integrating their mobile solutions and offering the possibility of controlling everything from a single interface.

(more…)

How to disable and enable a user account in Windows 10

Microsoft’s operating system offers the ability to create user accounts so that each person who uses the same computer has their own account to manage their files and applications with the necessary permissions. When we turn on the computer and start the operating system, we will see the Windows 10 login screen. In this screen, we can see how the list of the active user accounts in the system appears in the lower left corner.

Just by choosing your account from that list and entering the password, you will login to Windows 10. However, there are some tasks or functions that will only be available to the computer’s administrator user, such as being able to manage these user accounts. The system administrator will be the one that can create, delete, activate or deactivate a user account in Windows 10.

(more…)