NVIDIA "Pascal" GP104 Silicon Pictured

[ondooy]

NVIDIA "Pascal" GP104 Silicon Pictured

A picture of NVIDIA's next performance-segment GPU based on the upcoming "Pascal" architecture, the GP104, was leaked to the web, revealing a heap of raw material to speculate from. To begin with, GP104 retains the traditional component layout of a simple GPU die sitting on a conventional fiberglass substrate package, with memory chips surrounding it. NVIDIA is reserving exotic specs such as stacked HBM2 memory for the high-end GP100 silicon.

Some fairly straightforward trignometry reveals that the rectangular die of the GP104 measures 15.35 mm x 19.18 mm, with one source speculating a transistor-count of 7.4-7.9 billion. An early board based on this chip was pictured with Samsung-made 8-gigabit GDDR5 memory chips, which tick at 8 GHz (GDDR5-effective). If the memory bus width is 256-bit, then you're looking at a memory bandwidth of 256 GB/s. The CUDA core count of the GP104 could be closer to 2,560, than the 4,096 from an older report.

 

[ondooy]

Nvidia Pascal GP104-400 GPU photo surfaces and shows GDDR5X Memory

As you can see there remains to be an indication for a GP 104-400 GPU. Whether that one ends up as GTX 1080 or GTX 1080 Ti remains unanswered, but the photo does confirm it's a revision 400 in existence. It could very well be that the GP104-200-A1 ends up as GeForce GTX 1070 and the GP104-400 GPU as GeForce GTX 1080. Both cards would get 8GB of graphics memory. Both GPUs hold roughly 8 Billion transistors.

The GP 104-400 GPU tied to GDDR5X DRAM memory is interesting as it does confirm that memory is available. GDDR5X is your standard GDDR5 memory however, opposed to delivering 32 byte/access to the memory cells, this is doubled up towards 64 byte/access. And that in theory could double up graphics card memory bandwidth. Early indications according to presentations show numbers with the memory capable of doing up-to 10 to 12 Gbps, and in the future 16 Gbps. So your high-end graphics cards these days hover at say 400 GB/s. With GDDR5X that could increase to 800 maybe 1000 GB/sec and thus these are very significant improvements.

Check the photo, these are unmistakably Micron GDDR5X DRAM ICs.

 

[TomBadgerlock]

Nvidia Editor's Day next week. Not sure if for real though.

http://videocardz.com/59459/nvidia-pascal-editors-day-next-week

If true, hope to have more details on the new cards soon!