How to enhance performance?

[Nikita]

Asus P6T Deluxe+OC Palm,X58, Socket-1366
Corsair XMS3 DDR3 1333MHz 6GB CL9
Intel Core? i7 Quad Processor i7-940
XFX GeForce GTX 260 896MB PhysX CUDA
Western Digital VelociRaptor 150GB,
WD Caviar® Black 1TB 3,5", SATA,
Corsair Powersupply 750W Black, ATX Bulk

Price is 1387,95 USD

VS

Cpu(prossesor)- Amd AMD Phenom II X4 965 Black Edition
Gpu-(Graffikkort)- 2x XFX ATI Radeon HD 5770 with 875 mhz clockspeed and with 1,2 Gb Dedicated videomemory (Crossfired)
Motherboard- ASUS Crosshair IV Formula
Ram(memory) - 8 Gb corsair 1333mhz
Psu(power) - Corsair HX 750W 80 plus silver
Watercooling for prosessor - Corsair H60 Hydro Series
HDD(Harddisk)- 750GB 6gb/s Sata III
Kabinett- Cooler Master Storm Sniper

Price here is 1561,44 USD

What would be the best buy vs these two?

[ebony]

Asus P6T Deluxe+OC Palm,X58, Socket-1366
Corsair XMS3 DDR3 1333MHz 6GB CL9
Intel Core? i7 Quad Processor i7-940
XFX GeForce GTX 260 896MB PhysX CUDA
Western Digital VelociRaptor 150GB,
WD Caviar® Black 1TB 3,5", SATA,
Corsair Powersupply 750W Black, ATX Bulk

Price is 1387,95 USD

VS

Cpu(prossesor)- Amd AMD Phenom II X4 965 Black Edition
Gpu-(Graffikkort)- 2x XFX ATI Radeon HD 5770 with 875 mhz clockspeed and with 1,2 Gb Dedicated videomemory (Crossfired)
Motherboard- ASUS Crosshair IV Formula
Ram(memory) - 8 Gb corsair 1333mhz
Psu(power) - Corsair HX 750W 80 plus silver
Watercooling for prosessor - Corsair H60 Hydro Series
HDD(Harddisk)- 750GB 6gb/s Sata III
Kabinett- Cooler Master Storm Sniper

Price here is 1561,44 USD

What would be the best buy vs these two?

crossfire will make more probs mutiboxing then it gives u as u got a lot of cash i would go i7 maybe 2600k if u can. if u not then go amd. areyou making or buying the system.

[Ughmahedhurtz]

Asus P6T Deluxe+OC Palm,X58, Socket-1366
Corsair XMS3 DDR3 1333MHz 6GB CL9
Intel Core? i7 Quad Processor i7-940
XFX GeForce GTX 260 896MB PhysX CUDA
Western Digital VelociRaptor 150GB,
WD Caviar® Black 1TB 3,5", SATA,
Corsair Powersupply 750W Black, ATX Bulk

Price is 1387,95 USD

VS

Cpu(prossesor)- Amd AMD Phenom II X4 965 Black Edition
Gpu-(Graffikkort)- 2x XFX ATI Radeon HD 5770 with 875 mhz clockspeed and with 1,2 Gb Dedicated videomemory (Crossfired)
Motherboard- ASUS Crosshair IV Formula
Ram(memory) - 8 Gb corsair 1333mhz
Psu(power) - Corsair HX 750W 80 plus silver
Watercooling for prosessor - Corsair H60 Hydro Series
HDD(Harddisk)- 750GB 6gb/s Sata III
Kabinett- Cooler Master Storm Sniper

Price here is 1561,44 USD

What would be the best buy vs these two?

Personally, I ran an i7-950 X58 with 12GB of RAM and a 9800GT with 2 7200RPM drives in RAID0 and it worked like a champ for my 4 alts. It even worked good for my 4 Rift alts. I would stay away from SLI/Crossfire as it causes more trouble than it's worth. The 940 should do just fine in WoW. Upgrading to 8GB from 6GB is the easiest improvement, then an SSD after that, though it is not really required. Also no need to go with watercooling on an i7 -- just grab a decent copper block heatsink with a 120mm fan and be done with it.

So, personally, I'd go with the i7 system above and put 2 more GB of RAM in it. RAM is cheap right now.

[edit] How close are you to your budget limits at $1500ish?

[MiRai]

Asus P6T Deluxe+OC Palm,X58, Socket-1366
Corsair XMS3 DDR3 1333MHz 6GB CL9
Intel Core? i7 Quad Processor i7-940
XFX GeForce GTX 260 896MB PhysX CUDA
Western Digital VelociRaptor 150GB,
WD Caviar® Black 1TB 3,5", SATA,
Corsair Powersupply 750W Black, ATX Bulk

Price is 1387,95 USD

Albeit better than what you currently have... this system is not worth $1400 -- It is way too outdated.

EDIT: And, if you can afford a little extra money overall... Intel is way better than AMD, past and present.