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

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Det0x

Golden Member
Sep 11, 2014
1,057
3,092
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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?
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
 

blackangus

Member
Aug 5, 2022
115
161
76
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
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?
 

Det0x

Golden Member
Sep 11, 2014
1,057
3,092
136
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?
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
I'm domdtxdissar on that list
 
Last edited:

eek2121

Diamond Member
Aug 2, 2005
3,051
4,273
136

Thunder 57

Platinum Member
Aug 19, 2007
2,814
4,103
136
Almost same clock but surprisingly lower TDP


View attachment 100125

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.

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.

Good thing they came out in April and we are able to measure these sorts of things. Oh wait...
 

adroc_thurston

Diamond Member
Jul 2, 2023
3,322
4,790
96
Some folks never learn. This is ALSO, not the last AM4 release btw. We are getting close, but not there yet.
They can continue hacking together new SKUs like they did for PCO.
It doesn't matter.
I could really use either the 9275F or 9475F for work...
32c F Turin is zoomies.
Highly recommended.
 
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