Of the two the AMD machine is by far better. It's the latest AMD socket AM2. And even the older s939 AMD dual cores always stomped on the PD's anyway.
The Intel system is using an older board that does support a Core2 at all. And the PD's are known to have heat problems.
Choice #2 without a doubt. It's worth the extra $60
8 Pro 64bit
AMD FX 8350
Asus Sabertooth 990FX R2.0
16GB G.Skill Sniper 1866MHz
OCZ Vertex 4 128GB SSD
HDD's 3TB/2x 750GB/500GB/250GB
2x XFX 6870 1GB
PC P&C 750W PSU
Cooler Master HAF 932 Red LED
CM Hyper 212 EVO w/2x SickleFlow 120mm Red LED
Logitech X540 5.1 Surround
2X Acer 23" LED - Eyefinity: 3840x1080
"The significant problems we face cannot be solved at the same level of thinking we were at when we created them."
- Albert Einstein