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Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)

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blackangus said:
Question:
In your example of - "Optimal speed" as you put it for 2000FCLK would be 6000MT/s in 1:1 mode or 8000MT/s in 2:1 mode
Would it be correct in saying that the 2000 FCLK and 6000 MT/s in 1:1 would provide lower latency but less throughput than the 2000 FCLK and 8000 MT/s in 2:1?
Or is that not the correct conclusion to draw?
Click to expand...
Not sure will like my answer because it will involve a new factor we haven't talked about yet -> nitro mode
For highspeed 8000MT/s 2:1 you would need to run nitro 1-3-1 or more likely stock 2-3-1 (lower delay is better)
You will also need a good 1DPC motherboard if you want fulll boot to boot stability @ 8000MT/s (forget it on a 2DPC MB)

For plain old 6000MT/s 1:1 which every motherboard can run, you can lower nitro values to like 1-2-0 (stock / nitro disable) which will make up some part of the memory speeed difference..
But depending on memory timings, fully optimized 2000/8000 would net you both lower latency and higher bandwidth then optimized 2000/6000, at a much higher price

As a sweet spot for price/performance i would recommend running 2133/6400
 
Det0x said:
Not sure will like my answer because it will involve a new factor we haven't talked about yet -> nitro mode
For highspeed 8000MT/s 2:1 you would need to run nitro 1-3-1 or more likely stock 2-3-1 (lower delay is better)
You will also need a good 1DPC motherboard if you want fulll boot to boot stability @ 8000MT/s (forget it on a 2DPC MB)

For plain old 6000MT/s 1:1 which every motherboard can run, you can lower nitro values to like 1-2-0 (stock / nitro disable) which will make up some part of the memory speeed difference..
But depending on memory timings, fully optimized 2000/8000 would net you both lower latency and higher bandwidth then optimized 2000/6000, at a much higher price

As a sweet spot for price/performance i would recommend running 2133/6400
Click to expand...
Thanks again!

Yeah while I want to get as fast and low latency as possible memory, I also need capacity, so 2 DPC is a must. (Or I wait for much denser memory)
2133/6400 a possibility with 4 dimms?
 
blackangus said:
Thanks again!

Yeah while I want to get as fast and low latency as possible memory, I also need capacity, so 2 DPC is a must. (Or I wait for much denser memory)
2133/6400 a possibility with 4 dimms?
Click to expand...
Yeah my 2DPC hero is good upto around 7400MT/s with full stability (can bench at 8000MT/s with countless hours finetuning settings)
Think that will be the norm for good 2DPC motherboards, cap out at the 7200-7600MT/s range with the current generation X670

If you want to compare settings/latency/bandwidth you can take a gander at this ranking
docs.google.com

Ryzen 7000/8000/9000 DDR5 OC

docs.google.com docs.google.com
I'm domdtxdissar on that list
 
Last edited:
deasd said:
Almost same clock but surprisingly lower TDP

videocardz.com

Alleged AMD Ryzen 9000 desktop Zen5 specs leaked: Ryzen 9 9950X with 16 cores up to 5.7 GHz - VideoCardz.com

AMD Granite Ridge leak AMD is said to be introducing four SKUs at Computex. The Ryzen 9000 series, equipped with Zen5 cores, will be unveiled at Computex. A slide from a press briefing has been made public, listing four models featuring the 9000 SKU names, as expected. Ryzen 9000 The flagship...
videocardz.com videocardz.com

View attachment 100125
Click to expand...

And I was told I was wrong about 170W eight cores not being a thing. Of course I could be eating crow in a few days.

Philste said:
Why? Every TDP is lower or same than ZEN4. 12 Core 7900X has 170W, 8 and 6 Core 105W.

The funny thing is that Adrocs Rumors already begin to seem off, he claimed ZEN5 uses quite a bit more Power than ZEN4.
Click to expand...

Good thing they came out in April and we are able to measure these sorts of things. Oh wait...
 
adroc_thurston said:
I get it, you're upset, but no need to vent here.
2 days left.
Click to expand...

Fair enough. For the record I hope you are right about the performance numbers. I also like hearing your opinions. I'd edit that out but it's a bit late now I guess. Looking forward to (local to me) Sunday night 🍻.
 
adroc_thurston said:
No worries, OEMs will be all over Turin soon™.
Click to expand...
As long as Dell is in that group, there's a chance.

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