Bueno, pues aquí os cuelo el xBench con el Software Update 1.1 for iMac:



Results 159.59
System Info
Xbench Version 1.3
System Version 10.4.10 (8R4088)
Physical RAM 1024 MB
Model iMac7,1
Drive Type WDC WD5000AAKS-40TMA0
CPU Test 144.65
GCD Loop 329.57 17.37 Mops/sec
Floating Point Basic 158.16 3.76 Gflop/sec
vecLib FFT 115.85 3.82 Gflop/sec
Floating Point Library 103.48 18.02 Mops/sec
Thread Test 280.41
Computation 255.23 5.17 Mops/sec, 4 threads
Lock Contention 311.10 13.38 Mlocks/sec, 4 threads
Memory Test 140.14
System 151.49
Allocate 133.70 491.00 Kalloc/sec
Fill 158.84 7723.11 MB/sec
Copy 165.88 3426.19 MB/sec
Stream 130.37
Copy 121.40 2507.43 MB/sec
Scale 127.67 2637.67 MB/sec
Add 137.20 2922.73 MB/sec
Triad 136.56 2921.33 MB/sec
Quartz Graphics Test 204.56
Line 176.10 11.72 Klines/sec [50% alpha]
Rectangle 218.08 65.11 Krects/sec [50% alpha]
Circle 206.50 16.83 Kcircles/sec [50% alpha]
Bezier 190.16 4.80 Kbeziers/sec [50% alpha]
Text 245.29 15.34 Kchars/sec
OpenGL Graphics Test 157.09
Spinning Squares 157.09 199.28 frames/sec
User Interface Test 566.79
Elements 566.79 2.60 Krefresh/sec
Disk Test 75.59
Sequential 117.83
Uncached Write 148.17 90.97 MB/sec [4K blocks]
Uncached Write 104.69 59.23 MB/sec [256K blocks]
Uncached Read 93.34 27.32 MB/sec [4K blocks]
Uncached Read 144.28 72.52 MB/sec [256K blocks]
Random 55.65
Uncached Write 22.28 2.36 MB/sec [4K blocks]
Uncached Write 197.22 63.14 MB/sec [256K blocks]
Uncached Read 71.64 0.51 MB/sec [4K blocks]
Uncached Read 125.61 23.31 MB/sec [256K blocks]

A ver qué os parece este.

Saludos.