Subject: General Tech | February 11, 2016 - 05:27 PM | Ken Addison
Tagged: vr edition, video, UMC, ue4, podcast, phanteks, nvidia, logitech, GTX 980 Ti, g810, evga, enthoo evolv itx, asrtock, arm, amd, 28HPCU
PC Perspective Podcast #386 - 02/10/2016
Join us this week as we discuss the Logitech G810, Phanteks Enthoo EVOLV ITX, GTX 980 Ti VR Edition and more!
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Hosts: Ryan Shrout, Jeremy Hellstrom, Josh Walrath, and Allyn Malventano
Program length: 1:30:34
Week in Review:
0:26:20 EVGA 750W GQ Power Supply Review
0:36:45 This week’s podcast is brought to you by Casper. Use code PCPER at checkout for $50 towards your order!
News items of interest:
Hardware/Software Picks of the Week
Early testing for higher end GPUs
UPDATE 2/5/16: Nixxes released a new version of Rise of the Tomb Raider today with some significant changes. I have added another page at the end of this story that looks at results with the new version of the game, a new AMD driver and I've also included some SLI and CrossFire results.
I will fully admit to being jaded by the industry on many occasions. I love my PC games and I love hardware but it takes a lot for me to get genuinely excited about anything. After hearing game reviewers talk up the newest installment of the Tomb Raider franchise, Rise of the Tomb Raider, since it's release on the Xbox One last year, I've been waiting for its PC release to give it a shot with real hardware. As you'll see in the screenshots and video in this story, the game doesn't appear to disappoint.
Rise of the Tomb Raider takes the exploration and "tomb raiding" aspects that made the first games in the series successful and applies them to the visual quality and character design brought in with the reboot of the series a couple years back. The result is a PC game that looks stunning at any resolution, but even more so in 4K, that pushes your hardware to its limits. For single GPU performance, even the GTX 980 Ti and Fury X struggle to keep their heads above water.
In this short article we'll look at the performance of Rise of the Tomb Raider with a handful of GPUs, leaning towards the high end of the product stack, and offer up my view on whether each hardware vendor is living up to expectations.
Subject: Mobile | February 4, 2016 - 02:39 PM | Sebastian Peak
Tagged: wi-fi, shield tablet, shield, ota update, nvidia, android 6.0
NVIDIA has pulled the Android 6.0 OTA update for the original SHEILD (pre-K1) tablet after users experienced wi-fi connection issues. A post on NVIDIA's official forums explains:
"We have temporarily turned off the OTA update until we understand why a few users are losing WiFi connection after updating their tablet to OTA 4.0."
(Image: Android Police)
The post is authored by Manuel Guzman of NVIDIA Customer Care, and includes a list of potential fixes:
- Reboot your tablet 2-3 times. If this fails, power cycle your tablet 3-4 times (not reboot but complete power off). If this does not work, charge your tablet to 100% and attempt again a couple of times or so.
- Factory reset your tablet. Make sure you backup any important files before you perform this step.
- A couple of users reporting their WiFi coming back after leaving their tablet powered off for a few hours. Try leaving your tablet powered off for a few hours and then turn the device back on.
Users who still have issues connecting are asked to navigate to the Advanced W-Fi page on their tablet, and then to "take a screenshot and email the picture to firstname.lastname@example.org".
Subject: Graphics Cards, Memory | January 22, 2016 - 04:08 PM | Ryan Shrout
Tagged: Polaris, pascal, nvidia, jedec, gddr5x, GDDR5, amd
Though information about the technology has been making rounds over the last several weeks, GDDR5X technology finally gets official with an announcement from JEDEC this morning. The JEDEC Solid State Foundation is, as Wikipedia tells us, an "independent semiconductor engineering trade organization and standardization body" that is responsible for creating memory standards. Getting the official nod from the org means we are likely to see implementations of GDDR5X in the near future.
The press release is short and sweet. Take a look.
ARLINGTON, Va., USA – JANUARY 21, 2016 –JEDEC Solid State Technology Association, the global leader in the development of standards for the microelectronics industry, today announced the publication of JESD232 Graphics Double Data Rate (GDDR5X) SGRAM. Available for free download from the JEDEC website, the new memory standard is designed to satisfy the increasing need for more memory bandwidth in graphics, gaming, compute, and networking applications.
Derived from the widely adopted GDDR5 SGRAM JEDEC standard, GDDR5X specifies key elements related to the design and operability of memory chips for applications requiring very high memory bandwidth. With the intent to address the needs of high-performance applications demanding ever higher data rates, GDDR5X is targeting data rates of 10 to 14 Gb/s, a 2X increase over GDDR5. In order to allow a smooth transition from GDDR5, GDDR5X utilizes the same, proven pseudo open drain (POD) signaling as GDDR5.
“GDDR5X represents a significant leap forward for high end GPU design,” said Mian Quddus, JEDEC Board of Directors Chairman. “Its performance improvements over the prior standard will help enable the next generation of graphics and other high-performance applications.”
JEDEC claims that by using the same signaling type as GDDR5 but it is able to double the per-pin data rate to 10-14 Gb/s. In fact, based on leaked slides about GDDR5X from October, JEDEC actually calls GDDR5X an extension to GDDR5, not a new standard. How does GDDR5X reach these new speeds? By doubling the prefech from 32 bytes to 64 bytes. This will require a redesign of the memory controller for any processor that wants to integrate it.
Image source: VR-Zone.com
As for usable bandwidth, though information isn't quoted directly, it would likely see a much lower increase than we are seeing in the per-pin statements from the press release. Because the memory bus width would remain unchanged, and GDDR5X just grabs twice the chunk sizes in prefetch, we should expect an incremental change. No mention of power efficiency is mentioned either and that was one of the driving factors in the development of HBM.
Performance efficiency graph from AMD's HBM presentation
I am excited about any improvement in memory technology that will increase GPU performance, but I can tell you that from my conversations with both AMD and NVIDIA, no one appears to be jumping at the chance to integrate GDDR5X into upcoming graphics cards. That doesn't mean it won't happen with some version of Polaris or Pascal, but it seems that there may be concerns other than bandwidth that keep it from taking hold.
Subject: General Tech | January 21, 2016 - 12:06 AM | Scott Michaud
Tagged: vulkan, ue4, nvidia, Intel, gdc 2016, GDC, epic games, DirectX 12, Codemasters, arm, amd
The 30th Game Developers Conference (GDC) will take place on March 14th through March 18th, with the expo itself starting on March 16th. The sessions have been published at some point, with DX12 and Vulkan prominently featured. While the technologies have not been adopted as quickly as advertised, the direction is definitely forward. In fact, NVIDIA, Khronos Group, and Valve have just finished hosting a developer day for Vulkan. It is coming.
One interesting session will be hosted by Codemasters and Intel, which discusses bringing the F1 2015 engine to DirectX 12. It will highlight a few features they implemented, such as voxel based raytracing using conservative rasterization, which overestimates the size of individual triangles so you don't get edge effects on pixels that are partially influenced by an edge that cuts through a tiny, but not negligible, portion of them. Sites like Game Debate (Update: Whoops, forgot the link) wonder if these features will be patched in to older titles, like F1 2015, or if they're just R&D for future games.
Another keynote will discuss bringing Vulkan to mobile through Unreal Engine 4. This one will be hosted by ARM and Epic Games. Mobile processors have quite a few cores, albeit ones that are slower at single-threaded tasks, and decent GPUs. Being able to keep them loaded will bring their gaming potential up closer to the GPU's theoretical performance, which has surpassed both the Xbox 360 and PlayStation 3, sometimes by a factor of 2 or more.
Many (most?) slide decks and video recordings are available for free after the fact, but we can't really know which ones ahead of time. It should be an interesting year, though.
Subject: Graphics Cards | January 20, 2016 - 08:26 PM | Scott Michaud
Tagged: nvidia, linux, tesla, fermi, kepler, maxwell
It's nice to see long-term roundups every once in a while. They do not really provide useful information for someone looking to make a purchase, but they show how our industry is changing (or not). In this case, Phoronix tested twenty-seven NVIDIA GeForce cards across four architectures: Tesla, Fermi, Kepler, and Maxwell. In other words, from the GeForce 8 series all the way up to the GTX 980 Ti.
Image Credit: Phoronix
Nine years of advancements in ASIC design, with a doubling time-step of 18 months, should yield a 64-fold improvement. The number of transistors falls short, showing about a 12-fold improvement between the Titan X and the largest first-wave Tesla, although that means nothing for a fabless semiconductor designer. The main reason why I include this figure is to show the actual Moore's Law trend over this time span, but it also highlights the slowdown in process technology.
Performance per watt does depend on NVIDIA though, and the ratio between the GTX 980 Ti and the 8500 GT is about 72:1. While this is slightly better than the target 64:1 ratio, these parts are from very different locations in their respective product stacks. Swapping the 8500 GT for the following year's 9800 GTX, which leads to a comparison between top-of-the-line GPUs of their respective times, and you see a 6.2x improvement in performance per watt versus the GTX 980 Ti. On the other hand, that part was outstanding for its era.
I should note that each of these tests take place on Linux. It might not perfectly reflect the landscape on Windows, but again, it's interesting in its own right.
Subject: Graphics Cards | January 19, 2016 - 03:31 PM | Sebastian Peak
Tagged: rumor, report, nvidia, GTX 980MX, GTX 980M, GTX 970MX, GTX 970M, geforce
NVIDIA is reportedly preparing faster mobile GPUs based on Maxwell, with a GTX 980MX and 970MX on the way.
The new GTX 980MX would sit between the GTX 980M and the laptop version of the full GTX 980, with 1664 CUDA cores (compared to 1536 with the 980M), 104 Texture Units (up from the 980M's 96), a 1048 MHz core clock, and up to 8 GB of GDDR5. Memory speed and bandwidth will reportedly be identical to the GTX 980M at 5000 MHz and 160 GB/s respectively, with both GPUs using a 256-bit memory bus.
The GTX 970MX represents a similar upgrade over the existing GTX 970M, with CUDA Core count increased from 1280 to 1408, Texture Units up from 80 to 88, and 8 additional raster devices available (56 vs. 48). Both the 970M and 970MX use 192-bit GDDR5 clocked at 5000 MHz, and available with the same 3 GB or 6 GB of frame buffer.
WCCFtech prepared a chart to demonstrate the differences between NVIDIA's mobile offerings:
|Model||GeForce GTX 980 Laptop Version||GeForce GTX 980MX||
GeForce GTX 980M
|GeForce GTX 970MX||GeForce GTX 970M||GeForce GTX 965M||
GeForce GTX 960M
|Clock Speed||1218 MHz||1048 MHz||1038 MHz||941 MHz||924 MHz||950 MHz||1097 MHz|
|Frame Buffer||8 GB GDDR5||8/4 GB GDDR5||8/4 GB GDDR5||6/3 GB GDDR5||6/3 GB GDDR5||4 GB GDDR5||4 GB GDDR5|
|Memory Frequency||7008 MHz||5000 MHz||5000 MHz||5000 MHz||5000 MHz||5000 MHz||5000 MHz|
|Memory Bandwidth||224 GB/s||160 GB/s||160 GB/s||120 GB/s||120 GB/s||80 GB/s||80 GB/s|
These new GPUs will reportedly be based on the same Maxwell GM204 core, and TDPs are apparently unchanged at 125W for the GTX 980MX, and 100W for the 970MX.
We will await any official announcement.
UltraWide G-Sync Arrives
When NVIDIA first launched G-Sync monitors, they had the advantage of being first to literally everything. They had the first variable refresh rate technology, the first displays of any kind that supported it and the first ecosystem to enable it. AMD talked about FreeSync just a few months later, but it wasn't until March of 2015 that we got our hands on the first FreeSync enabled display, and it was very much behind the experience provided by G-Sync displays. That said, what we saw with that launch, and continue to see as time goes on, is that there are a much higher quantity of FreeSync options, with varying specifications and options, compared to what NVIDIA has built out.
This is important to note only because, as we look at the Acer Predator X34 monitor today, the first 34-in curved panel to support G-Sync, it comes 3 months after the release of the similarly matched monitor from Acer that worked with AMD FreeSync. The not-as-sexyily-named Acer XR341CK offers a 3440x1440 resolution, 34-in curved IPS panel and a 75Hz refresh rate.
But, as NVIDIA tends to do, they found a way to differentiate its own products, with the help of Acer. The Predator X34 monitor has a unique look and style to it, and it improves the maximum refresh rate to 100Hz (although that is considered overclocking). The price is a bit higher too, coming in at $1300 or so on Amazon.com; the FreeSync-enabled XR341CK monitor sells for just $941.
Subject: Graphics Cards | January 13, 2016 - 01:11 AM | Scott Michaud
Tagged: graphics drivers, graphics driver, nvidia
NVIDIA has been pushing for WHQL certification for their drivers, but sometimes issues slip through QA, both at Microsoft and their own, internal team(s). Sometimes these issues will be fixed in a future release, but sometimes they push out a “HotFix” driver immediately. This is often great for people who experience the problems, but they should not be installed otherwise.
In this case, GeForce Hotfix driver 361.60 fixes two issues. One is listed as “install & clocking related issues,” which refers to the GPU memory clock. According to Manuel Guzman of NVIDIA, some games and software was not causing the driver to fully wake the memory clock to a high-performance state. The other issue is “Crashes in Photoshop & Illustrator,” which fixes blue screen issues in both software, and possibly other programs that use the GPU in similar ways. I've never seen GeForce Driver 361.43 cause a BSOD in Photoshop, but I am a few versions behind with CS5.5.
Download links are available at NVIDIA Support, but unaffected users should just wait for an official driver in case the patch causes other issues, due to its minimal QA.
Subject: Graphics Cards | January 11, 2016 - 11:05 PM | Sebastian Peak
Tagged: rumor, report, pascal, nvidia, HBM2, hbm, GP104
A delivery of GPUs and related test equipment from Taiwan to Banglore has led to speculation about NVIDIA's upcoming GP104 Pascal GPU.
Image via Zauba.com
How much information can be gleaned from an import shipping manifest (linked here)? The data indicates a chip with a 37.5 x 37.5 mm package and 2152 pins, which is being attributed to the GP104 based on knowledge of “earlier, similar deliveries” (or possible inside information). This has prompted members of the 3dcenter.org forums (German language) to speculate on the use of GDDR5 or GDDR5X memory based on the likelihood of HBM being implemented on a die of this size.
Of course, NVIDIA has stated that Pascal will implement 3D memory, and the upcoming GP100 will reportedly be on a 55 x 55 mm package using HBM2. Could this be a new, lower-cost part using the existing GDDR5 standard or the faster GDDR5X instead? VideoCardz and WCCFtech have posted stories based on the 3DCenter report, and to quote directly from the VideoCardz post on the subject:
"3DCenter has a theory that GP104 could actually not use HBM, but GDDR5(X) instead. This would rather be a very strange decision, but could NVIDIA possibly make smaller GPU (than GM204) and still accommodate 4 HBM modules? This theory is not taken from the thin air. The GP100 aka the Big Pascal, would supposedly come in 55x55mm BGA package. That’s 10mm more than GM200, which were probably required for additional HBM modules. Of course those numbers are for the whole package (with interposer), not just the GPU."
All of this is a lot to take from a shipping record that might not even be related to an NVIDIA product, but the report has made the rounds at this point so now we’ll just have to wait for new information.