- Aug 29, 2006
- 13,249
- 3
- 51,960
My system has a fairly old motherboard with two USB 3.0 ports (Asus P7P55D-E Deluxe). Under Windows 7 these performed poorly and I bought a USB 3.0 expansion card with a Renasas chip.
Under Windows 7, my favorite USB 3.0 drive on the expansion card got 102 MB/s write and 123 MB/s read on transfer sizes 1MB and above. Performance on the onboard USB 3.0 slots was significantly worse, I could get speeds like that from USB 2.0.
Now that I've updated to 10, the add-in card is a little faster, at 115 / 169 MB/s on large transfers. But the motherboard ports get 176 / 295 MB/s. Not shabby at all. By comparison, my SSD sits on an SATA II port and gets 148 / 285 on the same test, clearly limited by the port. I got no SATA III ports.
Under Windows 7, my favorite USB 3.0 drive on the expansion card got 102 MB/s write and 123 MB/s read on transfer sizes 1MB and above. Performance on the onboard USB 3.0 slots was significantly worse, I could get speeds like that from USB 2.0.
Now that I've updated to 10, the add-in card is a little faster, at 115 / 169 MB/s on large transfers. But the motherboard ports get 176 / 295 MB/s. Not shabby at all. By comparison, my SSD sits on an SATA II port and gets 148 / 285 on the same test, clearly limited by the port. I got no SATA III ports.
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