Intel Larrabee Post-Mortem by Tom Forsyth

Subject: Graphics Cards, Processors | August 17, 2016 - 01:38 PM |
Tagged: Xeon Phi, larrabee, Intel

Tom Forsyth, who is currently at Oculus, was once on the core Larrabee team at Intel. Just prior to Intel's IDF conference in San Francisco, which Ryan is at and covering as I type this, Tom wrote a blog post that outlined the project and its design goals, including why it didn't hit market as a graphics device. He even goes into the details of the graphics architecture, which was almost entirely in software apart from texture units and video out. For instance, Larrabee was running FreeBSD with a program, called DirectXGfx, that gave it the DirectX 11 feature set -- and it worked on hundreds of titles, too.

Intel_Xeon_Phi_Family.jpg

Also, if you found the discussion interesting, then there is plenty of content from back in the day to browse. A good example is an Intel Developer Zone post from Michael Abrash that discussed software rasterization, doing so with several really interesting stories.

Author:
Manufacturer: NVIDIA

Take your Pascal on the go

Easily the strongest growth segment in PC hardware today is in the adoption of gaming notebooks. Ask companies like MSI and ASUS, even Gigabyte, as they now make more models and sell more units of notebooks with a dedicated GPU than ever before.  Both AMD and NVIDIA agree on this point and it’s something that AMD was adamant in discussing during the launch of the Polaris architecture.

pascalnb-2.jpg

Both AMD and NVIDIA predict massive annual growth in this market – somewhere on the order of 25-30%. For an overall culture that continues to believe the PC is dying, seeing projected growth this strong in any segment is not only amazing, but welcome to those of us that depend on it. AMD and NVIDIA have different goals here: GeForce products already have 90-95% market share in discrete gaming notebooks. In order for NVIDIA to see growth in sales, the total market needs to grow. For AMD, simply taking back a portion of those users and design wins would help its bottom line.

pascalnb-4.jpg

But despite AMD’s early talk about getting Polaris 10 and 11 in mobile platforms, it’s NVIDIA again striking first. Gaming notebooks with Pascal GPUs in them will be available today, from nearly every system vendor you would consider buying from: ASUS, MSI, Gigabyte, Alienware, Razer, etc. NVIDIA claims to have quicker adoption of this product family in notebooks than in any previous generation. That’s great news for NVIDIA, but might leave AMD looking in from the outside yet again.

Technologically speaking though, this makes sense. Despite the improvement that Polaris made on the GCN architecture, Pascal is still more powerful and more power efficient than anything AMD has been able to product. Looking solely at performance per watt, which is really the defining trait of mobile designs, Pascal is as dominant over Polaris as Maxwell was to Fiji. And this time around NVIDIA isn’t messing with cut back parts that have brand changes – GeForce is diving directly into gaming notebooks in a way we have only seen with one release.

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The ASUS G752VS OC Edition with GTX 1070

Do you remember our initial look at the mobile variant of the GeForce GTX 980? Not the GTX 980M mind you, the full GM204 operating in notebooks. That was basically a dry run for what we see today: NVIDIA will be releasing the GeForce GTX 1080, GTX 1070 and GTX 1060 to notebooks.

Continue reading our preview of the new GeForce GTX 1080, 1070 and 1060 mobile Pascal GPUs!!

3GB Version of NVIDIA GTX 1060 Has 128 Fewer CUDA Cores

Subject: Graphics Cards | August 12, 2016 - 06:33 PM |
Tagged: report, nvidia, gtx 1060 3gb, gtx 1060, GeForce GTX 1060, geforce, cuda cores

NVIDIA will offer a 3GB version of the GTX 1060, and there's more to the story than the obvious fact that is has half the frame buffer of the 6GB version available now. It appears that this is an entirely different product, with 128 fewer CUDA cores (1152) than the 6GB version's 1280.

NVIDIA-GeForce-GTX-1060-3-GB-Announcement.jpg

Image credit: VideoCardz.com

Boost clocks are the same at 1.7 GHz, and the 3GB version will still operate with a 120W TDP and require a 6-pin power connector. So why not simply name this product differently? It's always possible that this will be an OEM version of the GTX 1060, but in any case expect slightly lower performance than the existing version even if you don't run at high enough resolutions to require the larger 6GB frame buffer.

Source: VideoCardz

Wherein the RX 470 teaches us a valuable lesson about deferred procedure calls

Subject: Graphics Cards | August 12, 2016 - 05:44 PM |
Tagged: rx 470, LatencyMon, dpc, amd

When The Tech Report first conducted their review of the RX 470 they saw benchmark behaviour very different from any other GPU in that family but could not figure out what it was and resolve it before the mob arrived with pitchforks and torches demanding they publish or die. 

As it turns out there was indeed something rotten in benchmark; incredibly high DPC on the test machine.  Investigation determined the culprit to be the beta BIOS on their ASRock Z170 Extreme7+, specifically the BIOS which allowed you to overclock locked Intel CPUs.  They have just released their new findings along with a look at LatencyMon and DPC in general.  Take a look at the new benchmarks and information about DPC, but also absorb the consequences of demanding articles arrive picoseconds after the NDA expires; if there is a delay in publishing there might just be a damn good reason why.

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"We retested our RX 470 to account for this issue, and we also updated our review with DirectX 12 benchmarks for Rise of the Tomb Raider and Hitman, plus full OpenGL and Vulkan benchmarks for Doom."

Here are some more Graphics Card articles from around the web:

Graphics Cards

Corsair Releases Hydro GFX GTX 1080 Liquid-Cooled Graphics Card

Subject: Graphics Cards | August 12, 2016 - 10:59 AM |
Tagged: overclock, nvidia, msi, liquid cooled, hydro H55, hydro gfx, GTX 1080, graphics card, gaming, corsair

Corsair and MSI have teamed up once again to produce a liquid-cooled edition of the latest NVIDIA GPU, with the GTX 1080 receiving the same treatment these two gave to the Hydro GFX version of GTX 980 Ti last year.

HydroGFX_01.jpg

“The CORSAIR Hydro GFX GTX 1080 brings all the benefits of liquid cooling to the GeForce GTX 1080, boasting an integrated CORSAIR Hydro Series H55 cooler that draws heat from the GPU via a micro-fin copper base cold plate and dissipates it efficiently using a 120mm high-surface area radiator. A pre-installed low-noise LED-lit 120mm fan ensures steady, reliable air-flow, keeping GPU temperatures down and clock speeds high.

With a low-profile PCB and pre-fitted, fully-sealed liquid cooler, the Hydro GFX GTX 1080 is simple and easy to install. Just fit the card into a PCI-E 3.0 x16 slot, mount the radiator and enjoy low maintenance liquid cooling for the lifetime of the card.”

Naturally, with an integrated closed-loop liquid cooler this GTX 1080 won't be relegated to stock speeds out of the box, though Corsair leaves this up to the user. The card offers three performance modes which allow users to choose between lower noise and higher performance. Silent Mode leaves the GTX 1080 at stock settings (1733 MHz Boost), Gaming Mode increases the Boost clock to 1822 MHz, and OC Mode increases this slightly to 1847 MHz (while increasing memory speed in this mode as well).

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This liquid-cooled version will provide higher sustained clocks

Here are the full specs from Corsair:

  • GPU: NVIDIA GeForce GTX 1080
  • CUDA Cores: 2,560
  • Interface: PCI Express 3.0 x16
  • Boost / Base Core Clock:
    • 1,847 MHz / 1,708 MHz (OC Mode)
    • 1,822 MHz / 1,683 MHz (Gaming Mode)
    • 1,733 MHz / 1,607 MHz (Silent Mode)
  • Memory Clock:
    • 10,108 MHz (OC Mode)
    • 10,010 MHZ (Gaming Mode)
    • 10,010 MHz (Silent Mode)
  • Memory Size: 8192MB
  • Memory Type: 8GB GDDR5X
  • Memory Bus: 256-bit
  • Outputs:
    • 3x DisplayPort (Version 1.4)
    • 1x HDMI (Version 2.0)
    • 1x DL-DVI-D
  • Power Connector: 8-pin x 1
  • Power Consumption: 180W
  • Dimension / Weight:Card: 270 x 111 x 40 mm / 1249 g
  • Cooler: 151 x 118 x 52 mm/ 1286 g
  • SKU: CB-9060010-WW

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The Corsair Hydro GFX GTX 1080 is available now, exclusively on Corsair's official online store, and priced at $749.99.

Source: Corsair

ASUS Adds Radeon RX 470 and RX 460 to ROG STRIX Gaming Lineup

Subject: Graphics Cards | August 10, 2016 - 08:22 PM |
Tagged: video card, strix rx470, strix rx460, strix, rx 470, rx 460, ROG, Republic of Gamers, graphics, gpu, gaming, asus

Ryan posted details about the Radeon RX 470 and 460 graphics cards at the end of last month, and both are now available. Now the largest of the board partners, ASUS, has added both of these new GPUs to their Republic of Gamers STRIX series.

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The STRIX Gaming RX 470 (Image: ASUS)

ASUS announced the Radeon RX 470 STRIX Gaming cards last week, and today the more affordable RX 460 GPU variant has been announced. The RX 470 is certainly a capable gaming option as it's a slightly cut-down version of the RX 480 GPU, and with the two versions of the STRIX Gaming cards offering varying levels of overclocking, they can come even closer to the performance of a stock RX 480.

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The STRIX Gaming RX 460 (Image: ASUS)

The new STRIX Gaming RX 460 is significantly slower, with just 896 stream processors (to the 2048 of the RX 470) and a 128-bit memory interface (compared to 256-bit). Part of the appeal of the reference RX 460 - aside from low cost - is low power draw, as the <75W power draw allows for slot-powered board designs. This STRIX Gaming version adds a 6-pin power connector, however, which should provide additional overhead for further overclocking.

Specifications:

  STRIX-RX470-O4G-GAMING STRIX-RX470-4G-GAMING STRIX-RX460-O4G-GAMING
GPU AMD Radeon RX 470 AMD Radeon RX 470 AMD Radeon RX 460
Stream Processors 2048 2048 896
Memory 4GB GDDR5 4GB GDDR5 4GB GDDR5
Memory Clock 6600 MHz 6600 MHz 7000 MHz
Memory Interface 256-bit 256-bit 128-bit
Core Clock 1270 MHz (OC Mode)
1250 MHz (Gaming Mode)
1226 MHz (OC Mode)
1206 MHz (Gaming Mode)
1256 MHz (OC Mode)
1236 MHz (Gaming Mode)
Video Output DVI-D x2
HDMI 2.0
DisplayPort
DVI-D x2
HDMI 2.0
DisplayPort
DVI-D
HDMI 2.0
DisplayPort
Power Connection 6-pin 6-pin 6-pin
Dimensions 9.5" x 5.1" x 1.6" 9.5" x 5.1" x 1.6" 7.6" x 4.7" x 1.4"

The STRIX Gaming RX 470 OC 4GB is priced at $199, matching the (theoretical) retail of the 4GB RX 480, and the STRIX Gaming RX 470 is just behind at $189. The considerably lower-end STRIX Gaming RX 460 is $139. A check of Amazon/Newegg shows listings for these cards, but no in-stock units as of early this afternoon.

Source: ASUS

AMD Releases Radeon Software Crimson Edition 16.8.1

Subject: Graphics Cards | August 10, 2016 - 04:59 PM |
Tagged: amd, graphics drivers

Alongside the release of the Radeon RX 460 and RX 470 graphics cards, AMD has released the Radeon Software Crimson Edition 16.8.1 drivers. Beyond adding support for these new products, it also adds a Crossfire profile for F1 2016 and fixes a few issues, like Firefox and Overwatch crashing under certain circumstances. It also allows users of the RX 480 to overclock their memory higher than they previously could.

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AMD is continuing their trend of steadily releasing graphics drivers, and rapidly fixing important issues as they arise. Also, they have been verbose in their release notes, outlining fixes and known problems as they occur. Users can often track the bugs that affect them as they are added to the Known Issues, then graduated to Fixed Issues. While this often goes unrecognized, it's frustrating as a user to experience a bug and not know whether the company even knows about it, or they are just refusing to acknowledge it.

Useful release notes, like AMD has been publishing, are very helpful in that regard.

Source: AMD

AMD and NVIDIA on the Vive; perfomance data on Raw Data

Subject: Graphics Cards | August 8, 2016 - 05:25 PM |
Tagged: htc vive, amd, nvidia, raw data

Raw Data is an early access game for the HTC Vive, one which requires space to move and which allows the Vive to show off its tracking ability.  [H]ard|OCP wanted to see how the GPUs found in most high end systems would perform in this VR game and so grabbed several AMD and NVIDIA cards to test out.  Benchmarking VR games is not an easy task, instead of raw performance you need to focus on the dropped frames and unstable fps which result in nausea and a less engrossing VR experience.  To that end [H] has played the game numerous times on a variety of GPUs with settings changing throughout to determine the sweet spot for the GPU you are running.  VR offers a new gaming experience and new tests need to be developed to demonstrate performance to those interested in jumping into the new market.  Check out the full review to see what you think of their methodology as well as the raw performance of the cards.

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"Both AMD and NVIDIA have had a lot to say about "VR" for a while now. VR is far from mainstream, but we are now seeing some games that are tremendously compelling to play, putting you in middle of the action. Raw Data is one of those, and it is extremely GPU intensive. How do the newest GPUs stack up in Raw Data?"

Here are some more Graphics Card articles from around the web:

Graphics Cards

Source: [H]ard|OCP

Sapphire AMD Radeon RX 460 Nitro 4GB Benchmarked at HEXUS

Subject: Graphics Cards | August 8, 2016 - 01:08 PM |
Tagged: amd, radeon, RX460, rx 460, graphics, gpu, gaming, benchmark, 1080p, 1920x1080, gtx 950, gtx 750 ti

HEXUS has posted their review of Sapphire's AMD Radeon RX 460 Nitro 4GB graphics card, pitting it against the NVIDIA GTX 950 and GTX 750 Ti in a 1920x1080 benchmarking battle.

rx460nitro.jpg

Image credit: HEXUS

"Unlike the two previous AMD GPUs released under the Polaris branding recently, RX 460 is very much a mainstream part that's aimed at buyers who are taking their first real steps into PC gaming. RX 460 uses a distinct, smaller die and is to be priced from £99. As usual, let's fire up the comparison specification table and dissect the latest offering from AMD."

rx460.PNG

Image credit: HEXUS

The results might surprise you, and vary somewhat based on the game selected. Check out the source link for the full review over at HEXUS.

Source: HEXUS

Sapphire's Custom Cooled Nitro+ RX 470 Available Now

Subject: Graphics Cards | August 6, 2016 - 02:24 PM |
Tagged: sapphire, rx 470, polaris 10, dual x, amd

Following the official launch of AMD's Radeon RX 470 GPU, Sapphire has unleashed its own custom graphics card with the Nitro+ RX 470 in 4GB and 8GB factory overclocked versions. Surprisingly, the new cards are up for purchase now at various retailers at $210 for the 4GB model and $240 for the 8GB model (more on that in a bit).

The new Nitro+ RX 470 uses the same board and cooler design as the previously announced Nitro+ RX 480 which is a good thing both for Sapphire (less R&D cost) and for consumers as they get a rather beefy cooler that should allow them to push the RX 470 clocks quite a bit. The card uses the same Dual X cooler with two 95mm quick connect fans, three nickel plated copper heatpipes, and an aluminum fin stack. The card features the same black fan shroud and black and silver colored backplate. Out of the box this cooler should keep the RX 470 GPU running cooler and quieter than the RX 480, but it should also enable users to get higher clocks out of the smaller GPU (less cores means less heat and more overclocking headroom assuming you get a good chip from the silicon lottery).

Sapphire Nitro+ RX 470.jpg

Sapphire is using Black Diamond 4 chokes and a 4+1 power phase design that is driven by a single 8-pin PCI-E power connector (and up to 75W from the motherboard slot). This mirrors the design of its RX 480 sibling.

Display outputs include a single DVI, two HDMI 2.0b, and two DisplayPort 1.4 ports.

The chart below outlines the comparison between the Nitro+ RX 470 cards, RX 470 reference specifications, and the RX 480.

 

Nitro+ RX 470 4GB

Nitro+ RX 470 8GB RX 470 Reference RX 480
Stream Processors 2048 2048 2048 2304
Compute Units 32 32 32 36
TMUs 128 128 128 144
ROPs 32 32 32 32
GPU Clock (Base) 1143 MHz 1121 MHz 926 MHz 1120 MHz
GPU Clock (Boost) 1260 MHz 1260 MHz 1206 MHz 1266 MHz
Memory 4GB GDDR5 @ 7 GHz 8GB GDDR5 @ 8 GHz 4 or 8 GB GDDR5 @ 6.6 GHz 4 or 8 GB GDDR5 @ up to 8 GHz
Memory Bus 256-bit 256-bit 256-bit 256-bit
Memory Bandwidth 224 GB/s 256 GB/s 211 GB/s 256 GB/s
TDP <225W <225W 120W 150W
GPU Polaris 10 Polaris 10 Polaris 10 Polaris 10
Price $210 $240 $180+ $200+ ($240+ for 8GB)

The RX 470 GPU is only slightly cut down from RX 480 in that it features four fewer CUs though the processor maintains the same number of ROP units and the same 256-bit memory bus. Reference clocks are 926 MHz base and 1206 MHz boost. Memory can be up to 8GB of GDDR5 with reference memory clocks of 6.6 GHz (effective). Sapphire has overclocked both the GPU and memory with the NItro+ series. The Nitro+ RX 470 with 4GB of GDDR5 is clocked at 1143 MHz base, 1260 MHz boost, and 7 GHz memory while the 8GB version has a lower base clock of 1121 but a higher memory clock of 8 GHz.

The 8GB model having a lower base overclock is a bit strange to me, but at least they are rated at the same boost clock. These specifications are very close to the RX 480 actually and with a bit of user overclocking beyond the factory overclock you could get even closer to the performance of it.

The problem with this RX 470 that gets so close to the RX 480 though is that the price is also very close to reference RX 480s! The Sapphire Nitro+ RX 470 4GB is priced at $209.99 while the Nitro+ RX 470 8GB is $239.99.

These prices put the card well into RX 480 territory though not quite up to the MSRPs of factory overclocked RX 480s (e.g. Sapphire's own Nitro+ RX 480 is $219 and $269 for 4GB and 8GB respectively). The company has a nice looking (and hopefully performing) RX 470, but it is going to be tough to choose this card over a RX 480 that has more shaders and TMUs. One advantage though is that this is a card that will just work without having to manually overclock (though where is the fun in that? heh) and it is actually available right now unlike the slew of RX 480 cards that have been launched but are consistently out of stock everywhere! If you simply can't wait for a RX 480, this might not be a bad option.

EDIT: Of course the 8GB model goes out of stock at Newegg as I write this and Amazon's prices are higher than MSRP! hah.

Source: Sapphire