Should this system still be able to run WoW

[citizenx13]

Greetings and salutations

I was wondering if any1 could be kind enough and advise me if the below system should still be able to run World of Warcraft not at full say 50% - 60% settings and at 1920x1200.
Am I living in a dream world wanting it to run smoothly in a 25man raid?

Any constructive advice will be greatly appreciated

As per below build

Intel Core 2 Quad Q6600 "Energy Efficient SLACR 95W Edition" 2.40GHz (1066FSB)
Abit IP35 Pro XE Intel P35 (Socket 775) PCI-Express DDR2 Motherboard
OCZ Gold Edition 4GB (2x2GB) PC2-6400C5 Dual Channel Series (OCZ2G8004GK)
Gainward ATI Radeon HD 4870 X2 Golden Sample 2048MB GDDR5 PCI-Express Graphics Card
Corsair TX 650W ATX SLi Compliant Power Supply (CMPSU-650TXUK)

 

[citizenx13]

Thank you for your reply I will defo do that when I get home (if I have not already done so when trying to tweak it)
its my brothers rig and started off running like a dream yet now is just sluggish and a pain when tanking especially, did the whole defrag/system clean up so don’t know if I need to re-build or something
i will defo look through the settings again thank you