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Think RAID 0 but for RAM done by the CPU. Nearly every consumer CPU for the last 20 years is dual channel, meaning "2 drive RAID 0". If you've seen things like
by kllrnohj 6y ago
Think RAID 0 but for RAM done by the CPU.
Nearly every consumer CPU for the last 20 years is dual channel, meaning "2 drive RAID 0". If you've seen things like recommendations to get paired DDR memory sticks, this is why. You only get this RAID-like benefit with multiple RAM sticks (just like RAID 0 of a single drive doesn't do anything). It's also why some consumer products have unexpectedly bad performance for the CPU specs - cheaper laptops may skimp here and just run a single stick of memory instead of 2. Which means half the memory bandwidth.
8 channel then means the CPU can do this up to 8 sticks for 8x the bandwidth instead of the more common 2x.
- Hello71 6y agoalso notably this doesn't help with latency, which is more often the sticking point.
- gameswithgo 6y agowith 64 cores and 4 channels, throughput may often be a sticking point. that is like have 32 cores on a normal 2 channel desktop, throughput would often be a limiter there.