Question About WRX90/TRX50 DDR5 RDIMMs

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Hi!

I am currently using a TR PRO 5975WX system that I built. I’m looking to upgrade to a 7980X or 7985WX. My question is as follows:

I’ve seen 4x32GB 6000MHz kits – I think that’s what was sent to reviewers. But, for WRX90 I was considering 8x32GB RDIMMs. It appears the only thing available are base clock 4800MHz kits. It seems to me that while this would be 8 memory channels, it would actually perform worse than a 4x32GB 6000MHz kit on a TRX50. Is this true? And, is there some other alternative for WRX90 with 256GB?

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4x6000 < 8x4800

So in terms of bandwidth, 8 channels is superior no matter what speed each clock has (unless you get hypothetical DDR5-9600 on TRX50, in which case it is a tie)

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4x32GB 6400MT kit on newegg

Won’t the announced Threadripper Pros support XML/EXPO in the same way as just released 79??X Threadrippers?

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Thank you!

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Yeah I saw that kit. I’m trying to find an 8x32GB kit above 4800 (with EXPO), but not sure such a thing even exists.

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So in server/rdimm land it’s usually the case that as long as the spec and manufacturer is the same they don’t have to come in a kit. Generally that’s true so far.

There are some 8x kits from gskill meant for sapphire rapids that work dandy with wrx90 but 2x32*4 kits would work just fine for you in this case, too.

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As a point of reference, I purchased eight individual bog standard 4800MHz 64GB RDIMMs and they’ve been happily running at ~6000MHz for the past 4 months.

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Thank you!

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