Would I see much difference?

[neo-omega]

I am thinking of selling my current rig and upgrading to quad core etc. current rig is:

• Oppy 165 @ 2.6(ish) GHz (stepping in sig)
• Arctic Cooling Freezer 64 Pro
• DFI lanparty ultra-D
• 2 gigs OCZ pc4000 Platinum ram
• ATi X1800 XT
• Hyper type R modular psu 580 watts
• Adaptec scsic controller card 39160
• 16 gig 10K scsi disk, 400 gig SATA II, 200 gig SATA II and 20 gig IDE
• Thermaltake Shark (black)

Selling for £650 (With Vista home premium, but keeping scsi controller card and drive, and the 400 gig SATA II drive (probably binning the 20 gig ide))

and the new rig would be along the lines of

• Intel Core2Quad Q6600
• Swiftech H20-220 Apex Ultra Watercooling Kit
• Asus P5K Deluxe WiFi Intel P35
• OCZ 4GB (2 x 2GB) PC2-6400C5 Dual Channel Vista Gold Series DDR2
• HIS ATI Radeon HD 2900 XT SILENT Heatpipe 512MB GDDR3 VIVO TV-Out/Dual DVI
• Creative X-Fi Xtreme Gamer 7.1 Soundcard
• Corsair HX 620W ATX2.2 Modular SLI Compliant PSU
• Silverstone Tejamin TJ07B (with window)

at about £1400(ish)

So would I see much difference, and am I making the right decision?

Thanks in advance for all your help (and I hope I have put this in the right forum)

 

[neo-omega]

I will be using it for gaming, and possibly some rendering of drug molecules (i study chemistry at uni).

yes I will be overclocking (hence the watercooling ) and am wondering if the Q6600's are good clockers

 

[neo-omega]

one quick question.. Will the swiftech block fit on the motherboard, given the many, large heatpipes on the board? It does seem to be a very nice board and hope that the watercooling will fit.