Question Zen 6 Speculation Thread

[Joe NYC]

https://twitter.com/x/status/1919702960273326131

Looks like Venice and Medusa may share the same N2 12C CCD after all

So looks like 1 IOD may have 4 CCDs connected to it, 2 on each side, and 2 IODs are shown, which would be 8 CCDs x 12 cores = 96 cores?

Edit: Since Turin has 128 cores, 3 of the IO Dies could add up to 144 cores, which could be more likely for the core count.

But if there are to be 16 memory channels, then 2 or 4 IODs would make more sense.

 

[Kepler_L2]

So looks like 1 IOD may have 4 CCDs connected to it, 2 on each side, and 2 IODs are shown, which would be 8 CCDs x 12 cores = 96 cores?

Edit: Since Turin has 128 cores, 3 of the IO Dies could add up to 144 cores, which could be more likely for the core count.

But if there are to be 16 memory channels, then 2 or 4 IODs would make more sense.

Would be weird to go backwards on core count, but maybe they are just targeting maximum performance per core for regular Venice. 96 cores @ 6GHz @ 600W maybe?

 

[Saylick]

Link didn't work for me, but I'll take your word for it .

If that is the case, then:

• Desktop is assured to be N2 CCD
• Likely 192c for the high performance Turin
• Turin D @ ~240-288 Zen 6c cores (20-24 CCD's)?

Here's the image from the Xitter post, which shows 12 core CCDs with 48 MB L3 cache. It also looks like there's multiple IODs on package.

 

[adroc_thurston]

Would be weird to go backwards on core count, but maybe they are just targeting maximum performance per core for regular Venice. 96 cores @ 6GHz @ 600W maybe?

remember there are two venice platforms

 

[MS_AT]

remember there are two venice platforms

As in dense and normal? Or two venice normal platforms?

 

[adroc_thurston]

As in dense and normal? Or two venice normal platforms?

Yes and yes.
There's Venice-classic and Venice-dense and then there's SP7 and SP8 venice, which is high-end/mainstream split akin to Intel's AP/SP duality.
Plus SP8 has let's say, interesting options for other markets.

 

[OneEng2]

So looks like 1 IOD may have 4 CCDs connected to it, 2 on each side, and 2 IODs are shown, which would be 8 CCDs x 12 cores = 96 cores?

Edit: Since Turin has 128 cores, 3 of the IO Dies could add up to 144 cores, which could be more likely for the core count.

But if there are to be 16 memory channels, then 2 or 4 IODs would make more sense.

Turin Classic
1 IOD = 4 CCD = 48 cores
2 IOD = 8 CCD = 96 cores
3 IOD = 12 CCD = 144 cores
4 IOD = 16 CCD = 192 cores

Turin Dense
Lets say they can get 25% more cores in the same die so 1 CCD = 16 cores (round up).

Max Turin Dense then is 256c

 

[adroc_thurston]

Turin Classic
1 IOD = 4 CCD = 48 cores
2 IOD = 8 CCD = 96 cores
3 IOD = 12 CCD = 144 cores
4 IOD = 16 CCD = 192 cores

That's not how any of that works.

Lets say they can get 25% more cores in the same die so 1 CCD = 16 cores (round up).

It's a 32c CCD(ish).

 

[yuri69]

Given Venice Dense goes for 32c CCD, it feels natural to make a 16c CCD too. Plus reuse client 12c CCD for lower-end.