*Official Benchmark Thread* - Post it here or it didn't happen :D

[Mr. Fox]

20 minutes ago, tps3443 said:

So I’m pushing 1:1 speeds to check IMC limit and fabric limits. 
 

I can run 2,167 fclk which seems to work well, and DDR5 6600c32 1:1. Right now I’m trying to dial down to C26 or maybe c28. 

Did you try BIOS 9961 yet to see if that helps? Here are my older and tighter timings. I just reapplied them and ran a couple of benchmarks. They need to be loosened a bit to keep stability on AGESA 1.3.0.1 or newer. tRCDRD, tRP and tRC are too tight with newer AGESA, at least for my CPU. But, the read/write/copy and latency are better with the older BIOS even with the same timings and using "Normal" Bank Refresh. With "Mixed" Bank Refresh, performance degrades measurably. (Mixed is only a workaround for a security concern and I refuse to use it due to the performance hit.)

 

If you are able to run 6600 C32 1:1 that is better than what most people can accomplish with their CPU, mobo and memory kits. 

[Mr. Fox]

3 minutes ago, tps3443 said:

What about the faster 1:1 speeds? Im testing 6600c28 right now. How would those compare VS. like DDR5 8000+ in 1:2 speeds? 

8000 2:1 with CL34 and other tight timings is slightly better than 6400 C30 and other tight timings. Bandwidth is higher and latency a bit lower. They are close enough to probably make no meaningful difference in experience, but based on my testing the myth that slower is better on AMD is a myth and running 6400 1:1 is pointless if your system is capable of running 8000 or higher with tight timings. Testing done by Blackbird PC Tech also confirms what I found: 8000 is slightly better (smoother and more consistent FPS) than 6400 for gaming, even with an X3D CPU, but not by a lot.

[tps3443]

15 minutes ago, Mr. Fox said:

Did you try BIOS 9961 yet to see if that helps? Here are my older and tighter timings. I just reapplied them and ran a couple of benchmarks. They need to be loosened a bit to keep stability on AGESA 1.3.0.1 or newer. tRCDRD, tRP and tRC are too tight with newer AGESA, at least for my CPU. But, the read/write/copy and latency are better with the older BIOS even with the same timings and using "Normal" Bank Refresh. With "Mixed" Bank Refresh, performance degrades measurably. (Mixed is only a workaround for a security concern and I refuse to use it due to the performance hit.)

I almost bought that Vcolor kit! I thought it was suspiciously priced low. I suppose that’s why? Because it’s dual rank 16gigs? 
 

Have not tried the bios yet. But, I will soon. Being lazy. I am testing a 6600c28 though! 

[Mr. Fox]

28 minutes ago, tps3443 said:

I am testing a 6600c28 though

If you can run 6600 C28 in 1:1 mode that is already more than what most people can accomplish with the CPU, mobo and RAM kit they have. Many can't even run 6400 1:1 with the crummy silicon they were blessed with. Your CPU would have a very good IMC to do that, so I am not sure why you are having issues with 8000, 8200 or 8400 unless you are not using enough VDD/VDDQ/VDDIO. If you are able to run 6600 C28 1:1 then I doubt there is anything wrong with your motherboard.

28 minutes ago, tps3443 said:

I almost bought that Vcolor kit! I thought it was suspiciously priced low. I suppose that’s why? Because it’s dual rank 16gigs?

I'm glad you did not buy it. I think it would be fine for an average Joe type of gamerboy that just sets XMP/EXPO and moves on without bothering to actually tune anything for maximum performance. The plastic covers that look like a heatsink are a joke though. Gupsterg (oc.net member) discovered a V-COLOR kit he had purchased had plastic covers as well. It kind of pisses me off that they would even sell garbage like that. What a ripoff. I think the marketing info and specs not disclosing the dual rank design and plastic covers qualifies as a scam and I think they are very conveniently not disclosing what they know would make it a hard to sell product.

 

I debated whether or not to just go ahead and install it anyway in my son-in-law's build with the other upgrade parts. The performance would have been fine for him, but I think the high temps could have been an issue with the plastic covers. I decided he was better off with the generic green 2x8GB Hynix A-die with nice aftermarket heatsinks for stability and reliability. Things get kind of toasty in his SFF build with an air-cooled GPU and air-cooled space-heater mounted on top of his CPU, both working together to create a toastly little hot box. He doesn't need 32GB of RAM. 16GB will handle anything he would throw at it just fine.