SSDを増設した27インチiMacのベンチマーク結果です。iMacに内蔵されているSSDとHDDの両方に、MacOSXをクリーンインストールして計測しました。
まずはHDDの結果から。
Results 253.96
System Info
Xbench Version 1.3
System Version 10.6.5 (10H574)
Physical RAM 8192 MB
Model iMac11,3
Drive Type WDC WD1001FALS-40Y6A0
CPU Test 224.26
GCD Loop 343.56 18.11 Mops/sec
Floating Point Basic 200.04 4.75 Gflop/sec
vecLib FFT 132.15 4.36 Gflop/sec
Floating Point Library 423.78 73.79 Mops/sec
Thread Test 677.94
Computation 962.94 19.51 Mops/sec, 4 threads
Lock Contention 523.12 22.50 Mlocks/sec, 4 threads
Memory Test 429.54
System 467.40
Allocate 546.79 2.01 Malloc/sec
Fill 357.35 17375.22 MB/sec
Copy 558.27 11530.79 MB/sec
Stream 397.36
Copy 375.40 7753.77 MB/sec
Scale 362.49 7488.99 MB/sec
Add 433.67 9238.13 MB/sec
Triad 427.70 9149.55 MB/sec
Quartz Graphics Test 285.45
Line 251.51 16.74 Klines/sec [50% alpha]
Rectangle 339.65 101.40 Krects/sec [50% alpha]
Circle 277.39 22.61 Kcircles/sec [50% alpha]
Bezier 282.58 7.13 Kbeziers/sec [50% alpha]
Text 289.69 18.12 Kchars/sec
OpenGL Graphics Test 284.67
Spinning Squares 284.67 361.12 frames/sec
User Interface Test 431.05
Elements 431.05 1.98 Krefresh/sec
Disk Test 100.35
Sequential 196.08
Uncached Write 223.84 137.44 MB/sec [4K blocks]
Uncached Write 214.19 121.19 MB/sec [256K blocks]
Uncached Read 135.43 39.63 MB/sec [4K blocks]
Uncached Read 257.77 129.55 MB/sec [256K blocks]
Random 67.43
Uncached Write 21.25 2.25 MB/sec [4K blocks]
Uncached Write 447.96 143.41 MB/sec [256K blocks]
Uncached Read 162.60 1.15 MB/sec [4K blocks]
Uncached Read 257.74 47.82 MB/sec [256K blocks]
次にSSDの結果。
Results 349.30
System Info
Xbench Version 1.3
System Version 10.6.5 (10H574)
Physical RAM 8192 MB
Model iMac11,3
Drive Type C300-CTFDDAC128MAG
CPU Test 221.88
GCD Loop 344.02 18.13 Mops/sec
Floating Point Basic 199.31 4.74 Gflop/sec
vecLib FFT 129.09 4.26 Gflop/sec
Floating Point Library 424.29 73.88 Mops/sec
Thread Test 852.06
Computation 936.27 18.97 Mops/sec, 4 threads
Lock Contention 781.75 33.63 Mlocks/sec, 4 threads
Memory Test 430.63
System 467.50
Allocate 559.03 2.05 Malloc/sec
Fill 353.27 17176.65 MB/sec
Copy 556.30 11490.10 MB/sec
Stream 399.15
Copy 379.17 7831.59 MB/sec
Scale 364.96 7539.90 MB/sec
Add 434.07 9246.62 MB/sec
Triad 427.31 9141.24 MB/sec
Quartz Graphics Test 288.33
Line 251.59 16.75 Klines/sec [50% alpha]
Rectangle 339.40 101.33 Krects/sec [50% alpha]
Circle 277.64 22.63 Kcircles/sec [50% alpha]
Bezier 283.80 7.16 Kbeziers/sec [50% alpha]
Text 303.51 18.99 Kchars/sec
OpenGL Graphics Test 280.43
Spinning Squares 280.43 355.74 frames/sec
User Interface Test 467.40
Elements 467.40 2.15 Krefresh/sec
Disk Test 349.21
Sequential 224.28
Uncached Write 244.88 150.35 MB/sec [4K blocks]
Uncached Write 236.69 133.92 MB/sec [256K blocks]
Uncached Read 141.83 41.51 MB/sec [4K blocks]
Uncached Read 403.97 203.03 MB/sec [256K blocks]
Random 788.26
Uncached Write 697.94 73.88 MB/sec [4K blocks]
Uncached Write 428.58 137.20 MB/sec [256K blocks]
Uncached Read 2990.46 21.19 MB/sec [4K blocks]
Uncached Read 1026.71 190.51 MB/sec [256K blocks]
起動時間はSSDは13秒、HDDは17秒。クリーンインストール直後だと、SSDとHDDで起動時間に大きな違いはありませんでしたが、時間が経つにつれその違いは大きくなっていくと思います。