Which do you think is a better buy this one is for 650 (no monitor)
Intel Core i5-2500k 3.3 GHz (3.7 GHz Turbo Boost) Sandy Bridge Processor
12GB GSkill RipJaw DDR 3 1600Mhz Memory
Asus Maximus IV Extreme Z Motherboard
nVidia GTX460 GFX Card
Corsair Power Supply
Corsair H100 Cooling Unit
Cooler Master HAF Case
1 640GB Sata Hard Drive
OR this for 675 WITH a monitor.
AMD Phenom 2 x6 1100T(x6) Processor
Antec Liquid Cooler (Doesn't specify)
Asus M4A785TD-EVO Motherboard
Corsair Vengeance 16GB DDr3 1600Mhz
Asus 560Ti 1GB Direct X11 Video Card
1TB Hitachi 7200rpm Hard Drives
ASUS 24x DvD Burner...
OCZ 750w Powersupply
Vento Gaming Case (6 Fans, doesn't specify which one)
Go for the first one, Intel is far better than AMD. You might think that the AMD is faster because it has 6 cores, but on most games and applications, you don't use more than 4. By the way, if you are going to use the PC for gaming, then I should pick the first one and get 8 GB of RAM instead of 12 (that 4GB of extra RAM doesn't help at all). And maybe a (slightly) cheaper motherboard. Then put the money you saved from that into the Graphics Card and buy a nVidia GeForce GTX 660 Ti (or 570 which is slightly cheaper)
i would go with the AMD one if you need a screen and the gtx 560 ti is pretty good at gaming , the amd processor is decent good for multi tasking and i dont think it would affect your gaming much since the gpu is good.