Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
If you click on the Octo 2.26Ghz link and select picture #4 you'll notice that it shows TWO CPU/memory trays.

Pretty sure it's a mistake but 16 cores anyone?
 
Interesting:

Refurbished Mac Pro 2.8GHz Quad-Core Intel Xeon

Two 2.8GHz Quad-Core Intel Xeon processors
2GB (2 x 1GB) of 800MHz DDR2 ECC fully buffered DIMM
320GB Serial ATA 3Gb/s 7200-rpm hard drive
16x SuperDrive (DVD±R DL/DVD±RW/CD-RW)
ATI Radeon HD 2600 XT 256MB (two dual-link DVI ports)

$2,399.00
 
Do refurbs usually have scratches on them? Where do the refurbs come from anyway? Apple Stores that don't need them anymore?
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.