jbuszkie Posted November 25, 2021 Share Posted November 25, 2021 So I wanted to upgrade my cache and eventually make it raid 1. I have two nvme slots but if I used the other slot on the MB I'd have to give up two sata connectors. I didn't want to do that. So I bought a PCIe 3.0 x4 card to NVME. My MB has 3.0 PCIe so great I thought. So I plug it into one of my non x16 slots and powered up. I ran the disk speed benchmark and I was unimpressed. Less than 1G/s I ran the onboard existing NVME drive and it was 3x faster! I'm like crap! Are my slots not really 3.0? Was there some limitation in the slot I used? So I pull up the MB manual and it looks like I have 3x x16 slots (of which only one can be x16 other wise 2x 8x) the last x16 is only x4. And I have 3x PCIe 1x slots. Guess what I plugged my 4x card into... Yes a 1x slot!! So I opened up the case again and move the card over to the real x4 slot... And BOOM! 3x-ish. the speed! I have no idea why I though the little 1x slots were 4x??? I'm an idiot sometimes!! 🙂 Quote Link to comment
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