Effectively properly properly, I’ve one thing actually fascinating for you. Keep in mind the Xe HP GPU leak from a few days again that showcased a Four-tile 500W GPU? And keep in mind how most individuals assumed it is a 512 EU affair with 4096 cores? Effectively, I made a decision to ask certainly one of my sources working at Intel and so they instructed me the precise ratio and its not 128 EU per tile. The excellence, it appears, lies in between Xe LP and Xe HP – and the paperwork leaked had been about Xe HP.
Intel Arctic Sound Xe HP GPUs have 512 EUs on a single tile, Four-tile variant to have 2048 EUs and as much as 16,384 cores
Let’s begin by setting the document straight about one thing. The unique leak by Digital Traits assumed various 128 EUs per tile. The issue is that they had been speaking about Xe LP which isn’t the identical factor as Xe HP. Whereas the previous is designed as a low energy/efficiency platform and internally known as Xe 12.1, the latter is a excessive energy/high-performance platform internally known as Xe 12.5. The EU depend per-tile of Xe 12.5 or Xe HP is definitely completely different. Xe HP truly has an EU depend of 512 EUs per tile.
I had acknowledged in my article that 4096 core depend appears nearly definitely incorrect contemplating launching a 4k depend GPU with a 500W energy draw could be tantamount to suicide by Intel. Since Intel Xe HP (12.5) has 512 EUs per tile, the precise EU depend for the 1 Tile, 2 Tile, and Four Tile respectively are 512 EUs, 1024 EUs, and 2048 EUs! A large 2048 EU GPU with a 500W energy draw makes much more sense on paper. Now contemplating each architectures are completely different they could simply have completely different EU-to-core ratio but when it is the identical (and that could be a huge if) you’re looking at 16,384 cores in complete. Clocked at a measly 1200 Mhz, this behemoth would be capable to output 39.three TFLOPs of uncooked compute whereas drawing solely 500Ws!
Listed here are the precise EU counts of Intel’s numerous MCM-based Xe HP GPUs together with estimated core counts and TFLOPs:
- Intel Xe HP (12.5) 1-Tile GPU: 512 EU [Est: 4096 Cores, 12.2 TFLOPs assuming 1.5GHz, 150W]
- Intel Xe HP (12.5) 2-Tile GPU: 1024 EUs [Est: 8192 Cores, 20.48 assuming 1.25 GHz, TFLOPs, 300W]
- Intel Xe HP (12.5) Four-Tile GPU: 2048 EUs [Est: 16,384 Cores, 36 TFLOPs assuming 1.1 GHz, 400W/500W]
Intel’s ATS platform goes to be the corporate’s first actual foray into the world of high-performance computing and is basically the prototyping platform for Ponte Vecchio that is coming later down the road. Right here is the place issues get much more fascinating by the best way. I’ve heard that as of proper now, solely the 1 Tile and a couple of Tile variants have been accepted (keep in mind that the slides had been in Pre-POPL2 stage and had been made in early 2019) whereas because the Four-Tile nonetheless hasn’t been accepted but.
Contemplating Ponte Vecchio is slated to reach in 2021 in any case, it’d truly not make sense for Intel to proceed ahead with the Four-Tile monstrosity (however plans can and do change with this stuff). In both case, the leak (and this clarification) are a few product that’s just about in its infancy within the product life cycle and it could do properly to take every little thing at face worth as a result of the ultimate product will most likely look very completely different. The one factor I can say for certain is that if Intel does resolve to go along with a Four-Tile ATS GPU, it will not have 512 EUs – it is going to have 2048.