All 4 cores are recognized.

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Results 134.11
System Info
Xbench Version 1.3
System Version 10.5.1 (9B18)
Physical RAM 4096 MB
Model ACPI
Drive Type ST3500320AS
CPU Test 113.86
GCD Loop 168.26 8.87 Mops/sec
Floating Point Basic 116.26 2.76 Gflop/sec
vecLib FFT 81.57 2.69 Gflop/sec
Floating Point Library 120.10 20.91 Mops/sec
Thread Test 233.12
Computation 202.92 4.11 Mops/sec, 4 threads
Lock Contention 273.89 11.78 Mlocks/sec, 4 threads
Memory Test 146.30
System 147.02
Allocate 184.79 678.63 Kalloc/sec
Fill 144.31 7016.71 MB/sec
Copy 124.00 2561.11 MB/sec
Stream 145.60
Copy 141.42 2921.02 MB/sec
Scale 140.38 2900.12 MB/sec
Add 150.83 3213.10 MB/sec
Triad 150.41 3217.57 MB/sec
Quartz Graphics Test 177.25
Line 143.48 9.55 Klines/sec [50% alpha]
Rectangle 184.25 55.01 Krects/sec [50% alpha]
Circle 151.60 12.36 Kcircles/sec [50% alpha]
Bezier 144.02 3.63 Kbeziers/sec [50% alpha]
Text 439.99 27.52 Kchars/sec
OpenGL Graphics Test 118.51
Spinning Squares 118.51 150.34 frames/sec
User Interface Test 270.64
Elements 270.64 1.24 Krefresh/sec
Disk Test 68.90
Sequential 150.91
Uncached Write 170.99 104.99 MB/sec [4K blocks]
Uncached Write 172.51 97.61 MB/sec [256K blocks]
Uncached Read 98.74 28.90 MB/sec [4K blocks]
Uncached Read 211.26 106.18 MB/sec [256K blocks]
Random 44.64
Uncached Write 14.18 1.50 MB/sec [4K blocks]
Uncached Write 247.27 79.16 MB/sec [256K blocks]
Uncached Read 107.77 0.76 MB/sec [4K blocks]
Uncached Read 174.31 32.34 MB/sec [256K blocks]
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