this post was submitted on 23 Jun 2026
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Even if your DIMMs are speced for high data rates, you may not be able to achieve it with a full 128GB with the current crop of processors if you're using slotted DIMMs rather than soldered memory.
I saw something about that, that they struggle with large memory sticks, does it slow down overall performance?
Well, it's slower than what one could theoretically achieve if you could run that much at that rate. I believe that the MT rating is per stick and the memory is used interleaved, so it's not that you put in 128GB and the overall throughput spanning all sticks drops, but rather that you won't get the throughput that the more-expensive memory is rated for.
I have a Framework Desktop that's running 128GB of soldered memory at 8000 MT/s. In contrast, my desktop can only manage 3600 MT/s on 128 GB of slotted DIMMs.
Very interesting, thank you!