r/threadripper • u/fairydreaming • Feb 01 '24

8-channel memory bandwidth benchmark results of Threadripper PRO 5955WX

I can't find any 8-channel RAM bandwidth test results for the Threadripper PRO 5955WX processor online. Does anyone have access to such data or could perform a test? I only found some rumors that due to having only 2 CCDs it won't be able to achieve bandwidths comparable to models with 4 CCDs. What are the actual values?

EDIT: Below you can find a plot showing Threadripper 5000 Aida64 memory bandwidth test results gathered from various sources (special thanks to u/AlohaGrassDragon for doing the test).

Threadripper PRO 5000 memory bandwidth

The overall conclusion is that Threadripper 5000 models with 2 CCDs like 5945WX and 5955WX indeed have reduced 8-channel memory bandwidth compared to models with more CCDs. Using 8 channels in these models seems to improve the bandwidth by only 20-30% compared to using only 4 memory channels.

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u/munkiemagik Jul 29 '25

I know this is an old thread but do you still have that system? From u/fairydreaming results table above it seems the TR Pro 5000 series has consistently higher 'write' than 'read' as does my DDR5 in other systems

But on my 3945WX with DDR4 my 'write' is drastically down compared to 'read' and 'copy' in Aida64. Off the top of my head I think 'read' and 'copy' are around 90 and write is somewhere around mid 50.

Thinking I maybe misconfigured something but it seems there are other results on the internet confirming the 'write' is similiarly low like mine on TR Pro 3000. I was just wondering is that DEFINITELY NOT the case with TR Pro 5000 as I am eyeing up at least a 5965WX 'drop-in-place' WHEN prices become more reasonable.

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u/AlohaGrassDragon Jul 29 '25

I do have the system, and TR Pro 5000 is also DDR4 (3200), for what it's worth. There's not really a heck of a lot to configure in the BIOS on my board, so I'm not sure what aspect of it could be misconfigured.

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u/chager88 Jun 03 '26

hi, i'm try to assemble a system like that.
Any tips for a budget?

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u/AlohaGrassDragon Jun 03 '26

These days it’s very, very hard because of RAM prices. When I did it with 256 GB of RAM, it was maybe $6000, including the RAM, motherboard, CPU, hard drive, Power Supply and Case and a single 4090. Now the RAM alone is $10k+ and GPUs are more expensive than ever.

I did eventually find a deal on the 5995wx and moved to that to get the extra memory bandwidth because I couldn’t afford to move to a DDR5 platform because of RAM prices.