Subject: Graphics Cards | July 22, 2016 - 05:51 PM | Scott Michaud
Tagged: pascal, nvidia, graphics drivers
Turns out the Pascal-based GPUs suffered from DPC latency issues, and there's been an ongoing discussion about it for a little over a month. This is not an area that I know a lot about, but it's a system that schedules workloads by priority, which provides regular windows of time for sound and video devices to update. It can be stalled by long-running driver code, though, which could manifest as stutter, audio hitches, and other performance issues. With a 10-series GeForce device installed, users have reported that this latency increases about 10-20x, from ~20us to ~300-400us. This can increase to 1000us or more under load. (8333us is ~1 whole frame at 120FPS.)
NVIDIA has acknowledged the issue and, just yesterday, released an optional hotfix. Upon installing the driver, while it could just be psychosomatic, the system felt a lot more responsive. I ran LatencyMon (DPCLat isn't compatible with Windows 8.x or Windows 10) before and after, and the latency measurement did drop significantly. It was consistently the largest source of latency, spiking in the thousands of microseconds, before the update. After the update, it was hidden by other drivers for the first night, although today it seems to have a few spikes again. That said, Microsoft's networking driver is also spiking in the ~200-300us range, so a good portion of it might be the sad state of my current OS install. I've been meaning to do a good system wipe for a while...
Measurement taken after the hotfix, while running Spotify.
That said, my computer's a mess right now.
That said, some of the post-hotfix driver spikes are reaching ~570us (mostly when I play music on Spotify through my Blue Yeti Pro). Also, Photoshop CC 2015 started complaining about graphics acceleration issues after installing the hotfix, so only install it if you're experiencing problems. About the latency, if it's not just my machine, NVIDIA might still have some work to do.
It does feel a lot better, though.
Subject: Graphics Cards | July 21, 2016 - 10:21 PM | Ryan Shrout
Tagged: titan x, titan, pascal, nvidia, gp102
Donning the leather jacket he goes very few places without, NVIDIA CEO Jen-Hsun Huang showed up at an AI meet-up at Stanford this evening to show, for the very first time, a graphics card based on a never before seen Pascal GP102 GPU.
Source: Twitter (NVIDIA)
Rehashing an old name, NVIDIA will call this new graphics card the Titan X. You know, like the "new iPad" this is the "new TitanX." Here is the data we know about thus far:
|Titan X (Pascal)||GTX 1080||GTX 980 Ti||TITAN X||GTX 980||R9 Fury X||R9 Fury||R9 Nano||R9 390X|
|GPU||GP102||GP104||GM200||GM200||GM204||Fiji XT||Fiji Pro||Fiji XT||Hawaii XT|
|Rated Clock||1417 MHz||1607 MHz||1000 MHz||1000 MHz||1126 MHz||1050 MHz||1000 MHz||up to 1000 MHz||1050 MHz|
|Texture Units||224 (?)||160||176||192||128||256||224||256||176|
|ROP Units||96 (?)||64||96||96||64||64||64||64||64|
|Memory Clock||10000 MHz||10000 MHz||7000 MHz||7000 MHz||7000 MHz||500 MHz||500 MHz||500 MHz||6000 MHz|
|Memory Interface||384-bit G5X||256-bit G5X||384-bit||384-bit||256-bit||4096-bit (HBM)||4096-bit (HBM)||4096-bit (HBM)||512-bit|
|Memory Bandwidth||480 GB/s||320 GB/s||336 GB/s||336 GB/s||224 GB/s||512 GB/s||512 GB/s||512 GB/s||320 GB/s|
|TDP||250 watts||180 watts||250 watts||250 watts||165 watts||275 watts||275 watts||175 watts||275 watts|
|Peak Compute||11.0 TFLOPS||8.2 TFLOPS||5.63 TFLOPS||6.14 TFLOPS||4.61 TFLOPS||8.60 TFLOPS||7.20 TFLOPS||8.19 TFLOPS||5.63 TFLOPS|
Note: everything with a ? on is educated guesses on our part.
Obviously there is a lot for us to still learn about this new GPU and graphics card, including why in the WORLD it is still being called Titan X, rather than...just about anything else. That aside, GP102 will feature 40% more CUDA cores than the GP104 at slightly lower clock speeds. The rated 11 TFLOPS of single precision compute of the new Titan X is 34% better than that of the GeForce GTX 1080 and I would expect gaming performance to scale in line with that difference.
The new Titan X will feature 12GB of GDDR5X memory, not HBM as the GP100 chip has, so this is clearly a new chip with a new memory interface. NVIDIA claims it will have 480 GB/s of bandwidth, and I am guessing is built on a 384-bit memory controller interface running at the same 10 Gbps as the GTX 1080. It's truly amazing hardware.
What will you be asked to pay? $1200, going on sale on August 2nd, and only on NVIDIA.com, at least for now. Considering the prices of GeForce GTX 1080 cards with such limited availability, the $1200 price tag MIGHT NOT seem so insane. That's higher than the $999 starting price of the Titan X based on Maxwell in March of 2015 - the claims that NVIDIA is artificially raising prices of cards in each segment will continue, it seems.
I am curious about the TDP on the new Titan X -
will it hit the 250 watt mark of the previous version? Yes, apparently it will it that 250 watt TDP - specs above updated. Does this also mean we'll see a GeForce GTX 1080 Ti that falls between the GTX 1080 and this new Titan X? Maybe, but we are likely looking at an $899 or higher SEP - so get those wallets ready.
That's it for now; we'll have a briefing where we can get more details soon, and hopefully a review ready for you on August 2nd when the cards go on sale!
Subject: Graphics Cards | July 21, 2016 - 02:04 PM | Jeremy Hellstrom
Tagged: gtx 460, gtx 760, gtx 960, gtx 1060, fermi, kepler, maxwell, pascal
Phoronix took a look at how NVIDIA's mid range cards performance on Linux has changed over the past four generations of GPU, from Fermi, through Kepler, Maxwell, and finally Pascal. CS:GO was run at 4k to push the newer GPUs as was DOTA, much to the dismay of the GTX 460. The scaling is rather interesting, there is a very large delta between Fermi and Kepler which comes close to being replicated when comparing Maxwell to Pascal. From the looks of the vast majority of the tests, the GTX 1060 will be a noticeable upgrade for Linux users no matter which previous mid range card they are currently using. We will likely see a similar article covering AMD in the near future.
"To complement yesterday's launch-day GeForce GTX 1060 Linux review, here are some more benchmark results with the various NVIDIA x60 graphics cards I have available for testing going back to the GeForce GTX 460 Fermi. If you are curious about the raw OpenGL/OpenCL/CUDA performance and performance-per-Watt for these mid-range x60 graphics cards from Fermi, Kepler, Maxwell, and Pascal, here are these benchmarks from Ubuntu 16.04 Linux." Here are some more Graphics Card articles from around the web:
- ASUS ROG STRIX-GTX1070-O8G-GAMING: GTX 1070, Strix Style! @ Bjorn3d
- MSI GeForce GTX 1060 Gaming X Review @HiTech Legion
- EVGA GeForce GTX 1070 SC Gaming ACX 3.0 Review - Affordable Enthusiast Gaming @HiTech Legion
- Radeon RX 480 performance revisited with AMD's 16.7.1 driver @ The Tech Report
- AMD Radeon RX 480 8GB CrossFire @ [H]ard|OCP
Subject: Graphics Cards | July 20, 2016 - 12:19 PM | Sebastian Peak
Tagged: VideoCardz, rumor, report, nvidia, GTX 1070M, GTX 1060M, GeForce GTX 1070, GeForce GTX 1060, 2048 CUDA Cores
Specifications for the upcoming mobile version of NVIDIA's GTX 1070 GPU may have leaked, and according to the report at VideoCardz.com this GTX 1070M will have 2048 CUDA cores; 128 more than the desktop version's 1920 cores.
The report comes via BenchLife, with the screenshot of GPU-Z showing the higher CUDA core count (though VideoCardz mentions the TMU count should be 128). The memory interface remains at 256-bit for the mobile version, with 8GB of GDDR5.
VideoCardz reported another GPU-Z screenshot (via PurePC) of the mobile GTX 1060, which appears to offer the same specs of the desktop version, at a slightly lower clock speed.
Finally, this chart was provided for reference:
Image credit: VideoCardz
Note the absence of information about a mobile variant of the GTX 1080, details of which are still unknown (for now).
Yes, We're Writing About a Forum Post
Update - July 19th @ 7:15pm EDT: Well that was fast. Futuremark published their statement today. I haven't read it through yet, but there's no reason to wait to link it until I do.
Update 2 - July 20th @ 6:50pm EDT: We interviewed Jani Joki, Futuremark's Director of Engineering, on our YouTube page. The interview is embed just below this update.
Original post below
The comments of a previous post notified us of an Overclock.net thread, whose author claims that 3DMark's implementation of asynchronous compute is designed to show NVIDIA in the best possible light. At the end of the linked post, they note that asynchronous compute is a general blanket, and that we should better understand what is actually going on.
So, before we address the controversy, let's actually explain what asynchronous compute is. The main problem is that it actually is a broad term. Asynchronous compute could describe any optimization that allows tasks to execute when it is most convenient, rather than just blindly doing them in a row.
This is asynchronous computing.
Subject: Graphics Cards | July 19, 2016 - 01:54 PM | Jeremy Hellstrom
Tagged: pascal, nvidia, gtx 1060, gp106, geforce, founders edition
The GTX 1060 Founders Edition has arrived and also happens to be our first look at the 16nm FinFET GP106 silicon, the GTX 1080 and 1070 used GP104. This card features 10 SMs, 1280 CUDA cores, 48 ROPs and 80 texture units, in many ways it is a half of a GTX 1080. The GPU is clocked at a base of 1506MHz with a boost of 1708MHz, the 6GB of VRAM at 8GHz. [H]ard|OCP took this card through its paces, contrasting it with the RX480 and the GTX 980 at resolutions of 1440p as well as the more common 1080p. As they do not use the frame rating tools which are the basis of our graphics testing of all cards, including the GTX 1060 of course, they included the new DOOM in their test suite. Read on to see how they felt the card compared to the competition ... just don't expect to see a follow up article on SLI performance.
"NVIDIA's GeForce GTX 1060 video card is launched today in the $249 and $299 price point for the Founders Edition. We will find out how it performs in comparison to AMD Radeon RX 480 in DOOM with the Vulkan API as well as DX12 and DX11 games. We'll also see how a GeForce GTX 980 compares in real world gaming."
Here are some more Graphics Card articles from around the web:
- The NVIDIA GTX 1060 6GB Review @ Hardware Canucks
- A quick look at Nvidia's GeForce GTX 1060 @ The Tech Report
- VIDIA GeForce GTX 1060 Founders Edition Review @ OCC
- NVIDIA GeForce GTX 1060 Founder’s Edition @ Tech ARP
- NVIDIA GeForce GTX 1060 6GB Graphics Card Review @ Techgage
- GeForce GTX 1060 @ Hardwareheaven
- Nvidia GTX 1060 6GB Founders Edition @ Kitguru
- MSI GeForce GTX 1060 Gaming X 6 GB @ techPowerUp
- NVIDIA GeForce GTX 1060 6 GB @ techPowerUp
- NVIDIA GeForce GTX 1060 Review - Enthusiast Gaming at a Mainstream Price @ HiTech Legion
- NVIDIA GeForce GTX 1060 Offers Great Performance On Linux @ Phoronix
Twelve days ago, NVIDIA announced its competitor to the AMD Radeon RX 480, the GeForce GTX 1060, based on a new Pascal GPU; GP 106. Though that story was just a brief preview of the product, and a pictorial of the GTX 1060 Founders Edition card we were initially sent, it set the community ablaze with discussion around which mainstream enthusiast platform was going to be the best for gamers this summer.
Today we are allowed to show you our full review: benchmarks of the new GeForce GTX 1060 against the likes of the Radeon RX 480, the GTX 970 and GTX 980, and more. Starting at $250, the GTX 1060 has the potential to be the best bargain in the market today, though much of that will be decided based on product availability and our results on the following pages.
Does NVIDIA’s third consumer product based on Pascal make enough of an impact to dissuade gamers from buying into AMD Polaris?
All signs point to a bloody battle this July and August and the retail cards based on the GTX 1060 are making their way to our offices sooner than even those based around the RX 480. It is those cards, and not the reference/Founders Edition option, that will be the real competition that AMD has to go up against.
First, however, it’s important to find our baseline: where does the GeForce GTX 1060 find itself in the wide range of GPUs?
Subject: Graphics Cards | July 19, 2016 - 01:07 AM | Scott Michaud
Honestly, when I first received this news, I thought it was a mistaken re-announcement of the contest from a few months ago. The original Order of 10 challenge was made up of a series of puzzles, and the first handful of people to solve it, received a GTX 10-Series graphics card. Turns out, NVIDIA is doing it again.
For four weeks, starting on July 21st, NVIDIA will add four new challenges and, more importantly, 100 new “chances to win”. They did not announce what those prizes will be or whether all of them will be distributed to the first 25 complete entries of each challenge, though. Some high-profile YouTube personalities, such as some of the members of Rooster Teeth, were streaming their attempts the last time around, so there might be some of that again this time, too.
Subject: Graphics Cards | July 16, 2016 - 11:03 PM | Tim Verry
Tagged: rx 480, ROG, Radeon RX 480, polaris 10 xt, polaris 10, DirectCU III, asus
Following its previous announcement, Asus has released more information on the Republic of Gamers STRIX RX 480 graphics card. Pricing is still a mystery but the factory overclocked card will be available in the middle of next month!
In my previous coverage, I detailed that the STRIX RX 480 would be using a custom PCB along with Asus' DirectCU III cooler and Aura RGB back lighting. Yesterday, Asus revealed that the card also has a custom VRM solution that, in an interesting twist, draws all of the graphics card's power from the two PCI-E power connectors and nothing from the PCI-E slot. This would explain the inclusion of both a 6-pin and 8-pin power connector on the card! I do think that it is a bit of an over-reaction to not draw anything from the slot, but it is an interesting take on powering a graphics card and I'm interested to see how it all works out once the reviews hit and overclockers get a hold of it!
The custom graphics card is assembled using Asus' custom "Auto Extreme" automated assembly process and uses "Super Alloy Power II" components (which is to say that Asus claims to be using high quality hardware and build quality). The DirectCU III cooler is similar to the one used on the STRIX GTX 1080 and features direct contact heatpipes, an aluminum fin stack, and three Wing Blade fans that can spin down to zero RPMs when the card is being used on the desktop or during "casual gaming." The fan shroud and backplate are both made of metal which is a nice touch. Asus claims that the cooler is 30% cooler and three times quieter than the RX 480 reference cooler.
Last but certainly not least, Asus revealed boost clock speeds! The STRIX RX 480 will clock up to 1,330 MHz in OC Mode and up to 1,310 MHz in Gaming Mode. Further Asus has not touched the GDDR5 memory frequency which stays at the reference 8 GHz. Asus did not reveal base (average) GPU clocks. I was somewhat surprised by the factory overclock as I did not expect much out of the box, but 1,330 MHz is fairly respectable. This card should have a lot more headroom beyond that though, and fortunately Asus provides software that will automatically overclock the card even further with one click (GPU Tweak II also lets advanced users manually overclock the card). Users should be able to hit at least 1,450 MHz assuming they do decently in the silicon lottery.
For reference, stock RX 480s are clocked at 1,120 MHz base and up to 1,266 MHz boost. Asus claims their factory overclock results in a 15% higher score in 3DMark Fire Strike and 19% more performance in DOOM and Hitman.
Other features of the STRIX RX 480 include FanConnect which is two 4-pin fan headers that allows users to hook up two case fans and allow them to be controlled by the GPU. Aura RGB LEDs on the shroud and backplate allow users to match their build aesthetics. Asus also includes XSplit GameCaster for game streaming with the card.
No word on pricing yet, but you will be able to get your hands on the card in the middle of next month (specifically "worldwide from mid-August")!
This card is definitely one of the most interesting RX 480 designs so far and I am anxiously awaiting the full reviews!
How far do you think the triple fan cooler can push AMD's Polaris 10 XT GPU?
Subject: Graphics Cards | July 16, 2016 - 06:37 PM | Scott Michaud
Tagged: Volta, pascal, nvidia, maxwell, 16nm
For the past few generations, NVIDIA has been roughly trying to release a new architecture with a new process node, and release a refresh the following year. This ran into a hitch as Maxwell was delayed a year, apart from the GTX 750 Ti, and then pushed back to the same 28nm process that Kepler utilized. Pascal caught up with 16nm, although we know that some hard, physical limitations are right around the corner. The lattice spacing for silicon at room temperature is around ~0.5nm, so we're talking about features the size of ~the low 30s of atoms in width.
This rumor claims that NVIDIA is not trying to go with 10nm for Volta. Instead, it will take place on the same, 16nm node that Pascal is currently occupying. This is quite interesting, because GPUs scale quite well with complexity changes, as they have many features with a relatively low clock rate, so the only real ways to increase performance are to make the existing architecture more efficient, or make a larger chip.
That said, GP100 leaves a lot of room on the table for an FP32-optimized, ~600mm2 part to crush its performance at the high end, similar to how GM200 replaced GK110. The rumored GP102, expected in the ~450mm2 range for Titan or GTX 1080 Ti-style parts, has some room to grow. Like GM200, however, it would also be unappealing to GPU compute users who need FP64. If this is what is going on, and we're totally just speculating at the moment, it would signal that enterprise customers should expect a new GPGPU card every second gaming generation.
That is, of course, unless NVIDIA recognized ways to make the Maxwell-based architecture significantly more die-space efficient in Volta. Clocks could get higher, or the circuits themselves could get simpler. You would think that, especially in the latter case, they would have integrated those ideas into Maxwell and Pascal, though; but, like HBM2 memory, there might have been a reason why they couldn't.
We'll need to wait and see. The entire rumor could be crap, who knows?