XPのときと違って AMDから Cool'n'Quiet用のドライバが提供されなくて、Vistaではマイクロソフト任せなんだけど Vistaにしてから効いてなかった。
もっと早くに更新しとけば良かった。自分に関係のある変更がなかったので放置してたよ。
ソフトは HD Tuneと CrystalDiskMarkの二種類。
測定対象となる HDDは三つ。
HDS728080PLA380 | HDT725050VLA | HPT DISK 0_0 | |
Transfer Rate Minimum | 9.6 MB/sec | 38.0 MB/sec | 23.6 MB/sec |
Transfer Rate Maximum | 57.7 MB/sec | 74.4 MB/sec | 103.8 MB/sec |
Transfer Rate Average | 43.4 MB/sec | 62.1 MB/sec | 81.7 MB/sec |
Access Time | 13.8 ms | 13.6 ms | 13.7 ms |
Burst Rate | 94.1 MB/sec | 142.9 MB/sec | 90.1 MB/sec |
CPU Usage | 14.4% | 14.4% | 20.7% |
HDS728080PLA380 | HDT725050VLA | HPT DISK 0_0 | |
Sequential Read | 42.529 MB/s | 67.832 MB/s | 79.365 MB/s |
Sequential Write | 29.240 MB/s | 53.996 MB/s | 71.782 MB/s |
Random Read 512KB | 23.221 MB/s | 41.875 MB/s | 45.955 MB/s |
Random Write 512KB | 1.300 MB/s | 1.626 MB/s | 24.938 MB/s |
Random Read 4KB | 0.782 MB/s | 1.848 MB/s | 6.413 MB/s |
Random Write 4KB | 1.504 MB/s | 1.903 MB/s | 1.059 MB/s |
HDS728080PLA380 | HDT725050VLA | HPT DISK 0_0 | |
Sequential Read | 46.69 MB/s | 44.68 MB/s | 68.16 MB/s |
Sequential Write | 32.75 MB/s | 39.79 MB/s | 61.32 MB/s |
Random Read 512KB | 23.57 MB/s | 28.41 MB/s | 32.78 MB/s |
Random Write 512KB | 16.30 MB/s | 31.06 MB/s | 21.86 MB/s |
Random Read 4KB | 0.38 MB/s | 0.407 MB/s | 0.697 MB/s |
Random Write 4KB | 1.04 MB/s | 1.162 MB/s | 0.429 MB/s |