Cord.
I do not have any specific answers for you just some information.
Intel® Xeon® Processor E5620
| # of Cores | 4 |
| # of Threads | 8 |
http://ark.intel.com/products/47925/Intel-Xeon-Processor-E5620-12M-Cache-2_40-GHz-5_86-GTs-Intel-QPI
CPU upgrades.
http://www.cpu-upgrade.com/CPUs/Intel/Xeon/E5620.html
Make note of the "Upgrade Chance".
REO