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Nvidia Pascal GeForce GTX 1080 Pictured, Allegedly – June Launch Imminent

Khalid Moammer
Posted Apr 20, 2016
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A photograph showing Nvidia’s upcoming flagship Pascal GeForce GTX 1080 graphics card has just made its way to the web. It depicts a silver graphics card shroud, clearly bearing the Nvidia logo on the right and an engraved “GTX 1080” on the left. The allegedly new NVTTM cooler maintains the same familiar aesthetic look of Nvidia’s current GeForce lineup. Featuring a silver metallic body with black accents and a small acrylic window sitting above the vapor chamber and heatsink fin array.

Nvidia GeForce GTX 1080

The new design adopts a much more aggressive look with many sharp angles throughout the exterior of the metallic exoskeleton. Although notably, only the cooling unit’s shroud is visible in this picture. It’s difficult to tell if it includes the actual heatsink as no fins are visible behind the acrylic window. Additionally, we can clearly see that there’s no printed circuit board beneath the shroud, no PCIe connector or rear bracket. So this is just the external body that’s allegedly of aGTX 1080 and not an actual graphics card.

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[UPDATED – 2016/4/20 – 07:15 AM ET]

Alleged Nvidia GeForce GTX 1080 And GTX 1070 Shroud Tear Down

Credit : Videocardz
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An earlier photo that was leaked online showed another, identical, metallic shroud with the “GTX 1070” moniker engraved instead. We could very well be looking at the creation of a modder that designed these shrouds for his own personal amusement. There’s no way of telling whether these are actual Nvidia made or the product of a creative enthusiast.

NVIDIA GeForce Pascal Cards

Whether Nvidia will actually name their next generation GTX 980 and GTX 970 replacements GTX 1080 and GTX 1070 has been a subject of fierce debate. It’s important to point out that there’s very little evidence that Nvidia will even use a 1000 series naming convention for its upcoming products rather than introduce an fresh one as they have historically done over the years every time a given naming scheme had ran out.

Nvidia GeForce GTX 1080 And GeForce GTX 1070 Launching This Summer

All leaks that have surfaced to date with regards to Nvidia’s release plans for the GTX 1080 and GTX 1070 have pointed towards a scheduled announcement at Computex with product availability in June. The leaks have been piling up since earlier last month. We’ve seen die shots of Nvidia’s GP104 and GP106 GPUs leak. We’ve seen most specifications for Nvidia’s GTX 1080 and GTX 1070 also leak out. Including 8GB of GDDR5/X memory and a 256bit memory interface for both cards and around two thousand Pascal CUDA cores for the GTX 1080.

NVIDIA Pascal GP104 GPu

We also spotted several benchmarks of Nvidia’s upcoming Pascal GeForce GTX series lineup. Which showed performance that’s ahead of the GTX 980 Ti and GTX 980. The latest whispers claim that Nvidia’s GeForce GTX 1080 is powered by the GP104-400 GPU, the “full fat” variant of the GP104 graphics processing unit. Which is also set to power the GTX 1070 all be it with a few CUDA cores and other on-chip resources lasered off.

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Nvidia Pascal Specs

WCCFGTX 980 TiGTX 980GTX 1080GTX 1070TESLA P100 (GP100)
GPUGM200GM204GP104GP104GP100
Process Node28nm28nm16nm FinFET16nm FinFET16nm FinFET
Transistors8 Billion5.2 BillionTBATBA15.3 Billion
CUDA Cores2816 CUDA Cores2048 CUDA Cores2560 CUDA Cores?2048 CUDA Cores?3840 CUDA Cores
VRAM6 GB GDDR54 GB GDDR58 GB GDDR5X8 GB GDDR516GB HBM2
Memory Bus384-bit256-bit256-bit256-bit4096-bit
Memory Speed7Gbps7Gbps10Gbps8Gbps1.4Gbps
Bandwidth336GB/s224GB/s320GB/s256GB/s720GB/s
TDP250W165WTBATBA300W
Launch DateMay 2015September 2014June 2016June 2016Q1 2017

Nvidia’s Pascal Architecture – Fewer, Faster CUDA Cores With Significantly Higher Per Thread Throughput

We dove deep into Nvidia’s Pascal architecture after the company’s GTC 2016 reveal of the Tesla P100 in April. A powerful accelerator based on the company’s largest ever GPU, the Pascal GP100 which will be launching in 2017. We discussed all the architectural updates that Nvidia has made to Pascal which I’d highly recommend that you check out if you’re interested in finding out more about Pascal’s performance characteristics.

NVIDIA Pascal SMP

A few very significant changes from Maxwell to Pascal stick out. Each Pascal CUDA core has been beefed up considerably compared to Maxwell and clock speeds have gone up by 33%. So core for core, Pascal will be much faster than Maxwell.

Tesla ProductsTesla K40Tesla M40Tesla P100
GPUGK110 (Kepler)GM200 (Maxwell)GP100 (Pascal)
SMs152456
TPCs152428
FP32 CUDA Cores / SM19212864
FP32 CUDA Cores / GPU288030723584
FP64 CUDA Cores / SM64432
FP64 CUDA Cores / GPU960961792
Base Clock745 MHz948 MHz1328 MHz
GPU Boost Clock810/875 MHz1114 MHz1480 MHz
Compute Performance - FP32 5.04 TFLOPS6.82 TFLOPS10.6 TFLOPS
Compute Performance - FP64 1.68 TFLOPS0.21 TFLOPS5.3 TFLOPS
Texture Units240192224
Memory Interface384-bit GDDR5384-bit GDDR54096-bit HBM2
Memory SizeUp to 12 GBUp to 24 GB16 GB
L2 Cache Size1536 KB3072 KB4096 KB
Register File Size / SM256 KB256 KB256 KB
Register File Size / GPU3840 KB6144 KB14336 KB
TDP235 Watts250 Watts300 Watts
Transistors7.1 billion8 billion15.3 billion
GPU Die Size551 mm²601 mm²610 mm²
Manufacturing Process28-nm28-nm16-nm
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This should come as a relief to those who have been wondering if Nvidia’s GP104 based, GTX 1080 and GTX 1070, graphics cards will offer a reasonable speed-up over the GTX 980 Ti and GTX 980. The leaked die shot of GP104 revealed that the chip in question is roughly only 300mm² large, half that of the 3840 CUDA core GP100 GPU.

The GP100 GPU features 6 GPCs, Graphics Processing Clusters. Each contains 10 Pascam SMs, Streaming Multiprocessors. Each SM contains 64 Pascal CUDA cores. Which means that each GPC houses 640 Pascal CUDA cores. Since the GP104 GPU is almost exactly half the size of GP100, If Nvidia maintains the same 10 SM per GPC design,the GTX 1080 should feature 3 GPCs and 1920 CUDA cores. And up to 2048 CUDA cores if Nvidia decides to tweak the design and opt for a 4 GPC layout with n 8 SMs per GPC.

GPUKepler GK110Maxwell GM200Pascal GP100
Compute Capability3.55.36.0
Threads / Warp323232
Max Warps / Multiprocessor646464
Max Threads / Multiprocessor204820482048
Max Thread Blocks / Multiprocessor163232
Max 32-bit Registers / SM655366553665536
Max Registers / Block655363276865536
Max Registers / Thread255255255
Max Thread Block Size102410241024
CUDA Cores / SM19212864
Shared Memory Size / SM Configurations (bytes)16K/32K/48K96K64K

In either case, with Pascal’s significant architectural improvements and very high frequency increase in mind. A 1920-2048 CUDA core GTX 1080 graphics card should end up being faster than a GTX 980 Ti. The performance delta should be reminiscent of what GTX 980 brought to the table when it launched compared to the GTX 780 Ti. A 15-20% performance increase at a lower price point. That being said the GTX 1070 should be the star of the lineup, delivering GTX 980 Ti comparable performance at a much more affordable price point. Again similar to the performance/$ gains that the 970 offered compared to the 780 Ti.

AMD’s Polaris GCN 4.0 architecture is purported to deliver similar gains over the company’s current GCN iteration, we’ll be detailing those in an upcoming architectural deep dive piece as well. Polaris 10 and Polaris 11 based cards, R9 490, 480 and 470 series, are also pegged for a June launch against Pascal. So we can’t wait to see both Pascal and Polaris in action this summer.

 

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