I'm not sure I understand those stats but here is another example:
I've been processing some head capture expression (FACS sets) from 20x 18MP images. 100 Chunks, split over a few PC's
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Rented - PC 01, 34 Chunks started yesterday at 16:00
Core i7 3930k cpu @ 3.2GHz (Hex Core), 24GB DDR3 Ram, NVIDIA GTX570 2GB, 120GB solid state hard drive + 1TB Sata hard drive, dual 1GB networking, Windows 7 pro x64
Today, at this time PC01 is now on Chunk 25
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Dell T1600 - PC 02, 34 Chunks started yesterday at 16:00
One Intel® Xeon® E3-1270 (Quad Core, 3.4GHz, 8MB, 0GT), 16GB DDR3 Ram, NVIDIA Quadro 600 1GB (that's right 600!), 500GB Sata hard drive+ 1TB Sata hard drive, dual 1GB networking, Windows 7 pro x64
Today, at this time PC02 is now on Chunk 33!
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Basically this test shows that CPU trumps GPU by a big margin. That Xeon E3-1270 3.4GHz is allot faster than the Core i7 3930k cpu @ 3.2GHz.
New GTX580 and GTX680 should arrive today for further testing.