PC Master Race

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SSD read speed reduced to half in a year (self.pcmasterrace)

submitted 3 months ago* (last edited 3 months ago) by catculation to c/[email protected]

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Last year I built an AM5 PC with x670e board and installed 2x gen4 ssds and 1 gen3 from different OEMs.

Today I installed another gen4 and ran benchmark on all drives. To my surprise all the old ssds read speed is down by 30-60% from last result, write speed is similar to specs. I am unable to figure out what is wrong with them all drives are showing 98-99% of spare.

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[–] [email protected] 3 points 3 months ago* (last edited 3 months ago)

My motherboard has two M.2 slots, but they share a PCIE gen3 lane.

If I put SSDs in both, and they are both NVME, (I could put a sata SSD in one of them) they both drop down to gen2 speeds as the lane gets bifurcated in order for both slots to work at the same time.

In my case, my mother board manual actually DOESN'T mention this, so I had to find out the hard way when I plonked in a second drive. I did check when I bought the mobo because I knew this is common, but oh well.