Subject: General Tech, Displays | April 6, 2014 - 02:41 AM | Scott Michaud
Tagged: vesa, freesync, DisplayPort, amd
According to French website, hardware.fr, the VESA standards body has accepted AMD's proposal for FreeSync into an extension of the DisplayPort 1.2a standard. FreeSync is the standards-based answer to NVIDIA's G-Sync, a process for allowing the monitor to time itself according to its driving GPU. At CES 2014, AMD claimed that the technology was already in development to be used for mobile devices to save power (less frequent monitor refreshes).
By presenting image to the user only when the work is complete, you can avoid "tearing" and latency. The tearing will be eliminated because the graphics card does not change the image being drawn by the monitor as it is trying to display it. The latency is eliminated because it does not need to wait until the monitor is ready (up to one-over-the maximum refresh rate of the monitor). It should also save power by reducing its refresh rate on slower scenes, such as an idle desktop, but that is less of a concern when you are plugged into a wall.
What does this mean? Nothing yet, really, except that a gigantic standards body seems to approve.
Specifications and Overview
Talk to most PC enthusiasts today, be they gamers or developers, and ask them what technology they are most interested in for the next year or so and you will most likely hear about 4K somewhere in the discussion. While the world of consumer electronics and HDTV has been stuck in the rut of 1080p for quite some time now, computers, smartphones and tablets are racing in the direction of higher resolutions and higher pixel densities. 4K is a developing standard that pushes screen resolutions to 4K x 2K pixels and if you remove the competing options discussion (3840x2160 versus 4096x2160 are the most prominent) this move is all good news for the industry.
I first dove into the area of 4K displays when I purchased the SEIKI SE50UY04 50-in 4K TV in April for $1300 when it popped up online. The TV showed up days later and we did an unboxing and preview of the experience and I was blown away by the quality difference by moving to a 3840x2160 screen, even with other caveats to be had. It was a 30 Hz panel, half a typical LCD computer display today, it had limited functionality and it honestly wasn't the best quality TV I had ever used. But it was 4K, it was inexpensive and it was available.
It was hard to beat at the time but the biggest drawback was the lack of 60 Hz support, the ability for the screen to truly push 60 frames per second to the panel. This caused some less than desirable results with Windows usage and even in gaming where visual tearing was more prominent when Vsync was disabled. But a strength of this design was that it only required a single HDMI connection and would work with basically any current graphics systems. I did some Frame Rating game performance testing at 4K and found that GPU horsepower was definitely a limiting factor.
Today I follow up our initial unboxing and preview of the ASUS PQ321Q 4K monitor with a more thorough review and summary of our usage results. There is quite a bit that differs between our experience with the SEIKI and the ASUS panels and it is more than just the screen sizes.
Subject: General Tech, Graphics Cards, Displays | January 3, 2013 - 07:32 PM | Scott Michaud
Tagged: ces 2013, CES, DisplayPort, amd
It has been several months since we first heard about AMD’s multi-stream transport hub -- its friends call it MST hub -- announced with the FirePro W600 last June. Since then news has been pretty quiet about the 1-to-4 DisplayPort device.
It turns out that AMD wants to roll the dice in Vegas along with several other demonstrations.
Image from Rage3D Forums
The cute feature for the MST is its ability to split a 4K image into four 2K monitors. The reason why this is cute is because the hub enables the user to plug four-times as many monitors as they have DisplayPort 1.2 sockets on their GPU. The W600, for instance, contains 6 DisplayPort 1.2 plugs which enable it to drive 24 separate monitors from a single-slot card.
Image from Rage3D Forums
Unfortunately, another feature of DisplayPort 1.2 is the ability to route sound uniquely to each display. The hub, as announced in June, is incapable of providing audio from its one input to its four displays.
A last goodie is the capacity to mix landscape and portrait monitors together in an Eyefinity setup. Stay tuned for our impending CES 2013 coverage for more details on these demos.
PC Perspective's CES 2013 coverage is sponsored by AMD.
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