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Cake day: November 25th, 2023

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  • What is the frequency of your ram? DDR4 2666 mhz, DDR4 3200 mhz or DDR5 4800mhz? and how are they installed on the motherboard? 4x128gb(quad channel) or 8x64gb(octa channel)?

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    Rams frequencies are the most important for llm token generation, as these are often the bottleneck. With a 32 or more-core Epyc 7003 cpu in octa channel (DDR4 3200), you can expect 3 to 4 tokens(70b) equivalent to a 200GB/S vram of speed.

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    For OP, a 48-core cpu (genoa) or more, in 12-channel DDR5 4800 can expect to go up to 6 to 8 tokens(70b) equivalent to 400GB/S vram of speed.

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    an rtx 4090 is around 1000GB/s but with only 24gb vram, gpus are generally much faster for prompt processing than PC cpu (over 100 times faster), but I don’t know about modern server cpu(Genoa), normally they are faster in prompt processing than PC cpu, as they natively support fp16/BF16 operation.

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    But take it with a pinch of salt, as I don’t have these configurations at hand, so you’ll have to ask someone who does.