File System speeds

MacPro

2x3Ghz Quad-Core Intel Xeon
16GB 667 Mhz DDR2
  Drive: ST31500341AS
  Capacity: 1.5 TB (1,500,301,910,016 bytes)
  Model: ST31500341AS                            
  Revision: SD17    
  Serial Number:             9VS0A3HN
  Native Command Queuing: Yes
  Queue Depth: 32
  Removable Media: No
  Detachable Drive: No
  BSD Name: disk0
  Rotational Rate: 7200
  Medium Type: Rotational
  Bay Name: Bay 1
  Partition Map Type: GPT (GUID Partition Table)
  S.M.A.R.T. status: Verified
  Volumes:
  File System: Journaled HFS+
  BSD Name: disk0s2

WRITING 12.4665911198 1024000000 82.1395351915 MB/s

On first run.
READING 1.72446203232 1024000000 593.808376647 MB/s
READING 1.66705989838 1024000000 614.255073256 MB/s
READING 1.66696095467 1024000000 614.291532824 MB/s

Lenovo Think Center

Intel Core i5 650 @3.2 Ghz
3.19 GHz, 2GB Ram
Hitachi HDS721025CLA382
Windows XP (32 bit)

1st Time READING: 58.547000, 2095736020, 35.7957 MB/s
2nd Time READING: 1.516000, 2095736020, 1382.4115 MB/s 
obviously the buffer kicked in.

Now the average for 10 threads: 37.6282 MB/s