Thinkpad w520 how many monitors




















I believe only the Ts has that capability. As indicated on lenovo support page, any Thinkpad with optimus can run four monitors when docked. Have you tried it with T or W and they did not work?

Doesn't work with the W, tested it myself. W can only support 2 external monitors plus one internal monitor. Regardless whether you use the dock or not. T, T, Ts should support 2 external monitors from laptop's displayport and vga and one internal monitor. The pixel density comes to dpi , making it easy to see many windows at once. Compared to the older models with an aspect ratio of and a resolution of x pixels, the new W has less vertical pixels which might be missed when editing documents or photos among other tasks.

The matte screen is really helpful here, keeping the screen from reflecting surrounding light. There's no choice but to keep the brightness all the way up outdoors, but even here the matte screen does a good job of keeping the picture visible since no reflections overwhelm the contents of the screen. This combined with a good contrast ratio of makes print easier to read, photos more vibrant and films altogether sharper-looking.

The black level especially profits from the high contrast ratio, making blacks appear more saturated and rich than is the case with most consumer laptops. Before being calibrated, the particular shades displayed make for an unnatural-looking picture. With the help of a colorimeter, the colors can be adjusted to your personal tastes or tasks you'll be doing. Especially in the green-blue and orange-red sections of the color spectrum, there's a good deal of far-too-specific hues that show up on the display.

The green-yellow section is in turn underrepresented and can't cover that part of sRGB. All in all, the color space covers a great deal but sometimes mismatches colors. The display offers more viewing angles than most laptop screens. Looking at the screen from the left or right, the picture remains undistorted even at sharper angles.

But when tilting the screen back and forth, the picture soon develops a red or yellow tone to it. The issue has since been resolved and all chipsets in laptops currently sold are new and should be free from this defect—also true for the W model we reviewed. Hyper-threading virtualization, four additional virtual cores , TurboBoost overclocking from 2.

The specialized Quadro drivers and firmware make for stable performance and compatibility with a good deal of professional software. The usual performance tests we ran yielded the good results we hoped for. The Cinebench R Hardly any notebooks can top these values. The graphics performance is also pretty impressive, especially because the DDR3 graphics memory combined with the bit memory bus can lead to reduced the performance. But the results really speak in favor of the Quadro M.

While the laptop was unplugged, the system didn't manage to keep this high level of performance going for very long. By default, the performance of the hardware is limited by the BIOS "battery optimized". For one, the clock rate is set to MHz, and only rises a bit every now and then. You can get around the BIOS restriction for a short while by setting the system to "maximum performance" and for app.

To see the effect of this reduced clock rate in action, we ran some of our benchmarks again on battery power. There BIOS restriction most likely serves to protect the battery. That is, the battery heats up too much when the hardware is running at normal capacity and—besides reducing the lifespan of the battery—this might become a safety issue.

We've contacted Lenovo concerning this limitation. Once we get a response, we'll edit it in here. The DPC Latency Checker shows that drivers tend to be very compatible with the Lenovo ThinkPad W—meaning that there shouldn't be any delayed feedback to peripheral devices.

Above all, OpenGL characteristics of the graphics card are examined here. The W we reviewed held its own in this test. Compared to many previous generation workstations from various manufacturers, we observed an increase in performance in almost all areas. The Quadro M manages to rank in 1st in some programs.

The development of drivers since the release of earlier models should also be taken into consideration since we've seen boosts in performance stemming from driver updates in the past.

The brand new Quadro M should, therefore, have a bright future if experience serves as any indicator. On top of that performance drivers and special drivers for AutoCad and 3ds Max are available but have not been tested by us.

Especially the special drivers for AutoCad and 3ds Max have been known to lead to even better performance. While Nvidia has typically been very quick and smooth in converting video using a CUDA engine , Intel is now a considerable alternative with its Quicksync technology. This is, however, only possible if the integrated Intel GPU remains active since Intel drivers are responsible for carrying out the task.

Notebooks in which the integrated graphics card is never active—that is, the dedicated graphics card does everything—Quicksync won't work. In this case, installing an appropriate driver for it later on is unfortunately not an option. We tested video conversion using Badaboom from Elemental. This software gave us the option of converting the film "Se7en" from DVD to an iPhone-compatible mp4 format with a lower resolution of x We used to use Badaboom 1. A quick performance comparison of the two versions showed the new version is marginally better than the old, so the results aren't biased toward the new version.

The Quicksync results are astounding. While CUDA takes 16 min 34 s fps for the conversion, Quicksync manages to finish in a shorter 13 min 30 s fps. When the laptop is unplugged, however, this difference in performance was not observed. Those who'd like to perform other tasks while converting video might, therefore, want to keep on using the Nvidia graphics card with CUDA for this. The difference in power consumption between the two methods is discussed in the "Battery Life" section.

Depending on the multiple hard drive combination you choose, you can connect them either via Raid 0 faster or Raid 1 each piece of data on both hard drives. You don't have to worry whether this powerhouse of a laptop will be able to run the most recent games. Out of all the titles we tested, only Battlefield Bad Company 2 runs just a tad bit choppy at 23 fps with graphics set to max.

Although its been hinted that graphics cards intended for professional applications might have compatibility problems with games, we observed no such indication for the games we played on the ThinkPad W For a comprehensive side-by-side analysis of various notebook graphics cards' gaming performance, have a look at our GPU comparision chart.

But rebooting after step 7, causes the OS to completely crash black screen after the bootloader that says "Could not write bytes: broken pipe". I believe this is due to the xorg server disrupting my system somehow. I tried a similar approach in the following tutorial, but I had the same crash as in 1 during the reboot after installing xorg-dev:. As of now, I am wondering where to go from here. I have a couple leads below, any ideas on what the problem is, or what I can do?

Is there a better suggestion? Also, here are some of my files let me know if there is a better configuration - the only change I made was uncommenting the "BusID PCI First of all, I stopped trying with I believe the LTS versions cannot practically keep up with the ever-changing graphics situation - and I learned the hard way.

The latter should also have information to help a beginner when compiling the drivers from source. PS: As a Linux novice, this process was very time consuming and I can only hope that this post helps someone.

Setting up an external monitor on a laptop running Optimus with display ports that are hard-wired to the Nvidia chip is a very discouraging process to a new Linux user. As a user who needs to use Linux for my work, this whole situation over protecting proprietary Optimus drivers brings embarrassment upon the whole tech community.

Ubuntu Community Ask! Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? If you're trying to do a triple-headed monitor with your laptop, you are an extremely rare breed, according to this Microsoft article, Enhancing Windows 8 for multiple monitors , Steven Sinofsky Monday, May 21, , which includes this fascinating little table:.

This article is for you, the power user who needs to be highly productive in their home office. Eventual replacement of my aging CCD-backlit-display with a more efficient LED model will cut down watt burn by about 50, so that'd be watts total.

If you use a power strip to turn off your monitors and accessories when leaving your office, do not plug the Nixeus monitor into that same strip. It's described in more detail here: If your x monitor needs a cable longer than 6', you may want to go with newer DisplayPort 1.

Pictured below. The captions call-out the important cables, to put into the exact indicated USB outlets. V Oct. I find it annoying if it's at the top of your NIC list and not attached, so you then cannot get online all surfing stops working , until you change NIC priority. But it's easier to just disable it. Driver version 1. You'll get a feel for how the powercfg. I went and cut back another 50 watts of power draw and heat in my small office, by re-purposing the CCFL backlit Gateway monitor into another home.



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