I m building a pc for modeling, gaming, cad applications, photoshop.
Wich of these is better? AMD or Quad core?
(a very fast dual 2 core would be just as good or even better but i need many cores for rendering speed)
BTW if you see incompatibilities with the configurations or you can make a better one for these prices, let me know caus i'm still a NEWB.
Also, the geforce can be softmodded to better run cad applications so i think i'm covered there. No Ati because of compatibility issues with sketchup from what i hear.
Do not get a triple channel (3x2gb) kit for the AMD board, those kits are for i7 mobos. Get a 2x2gb dual channel set instead. Same goes for the core 2 quads. In fact, you could very well go DDR2 with the core 2 quads without a noticeable drop in performance. http://www.newegg.com/Product/Product.aspx?Item=N82E168...
The X4 940 is not an AM3 processor. It is AM2+. You will need to pair with ddr2 ram and an AM2+ board. Which is actually the less expensive route and will give comparable performance to the X955/DDR3/AM3 config.
I recommend the X4 940, Biostar TA790GX, and 4 gigs OCZ Reaper DDRII1066.
+1 on the WD640GB Black, unless you wanna take some of the money you save and get the 1TB.
I don't know much about the Sunbeam cooler, but you may want something beefier if overclocking. Something that can handle 125W+. Look at Zalman coolers, Thermalright Ultra 120, Xigmatek 1283, etc.
A $20 PSU? No. Absolutely no. I saw a Corsair TX650W for $70 USD but the PSU is something you do not want to skimp on. Even if it worked on this system (which I have my doubts) you can get all sorts of problems from a low end PSU from random voltage fluctuations causing BSOD or even corrupting your data without your knowledge. They can fry your components. It's no doubt going to have no fan speed control and at worst it can burn your house down.