What are you planning to use this PC for? Any specific game titles or applications?
Definatly recommend the x1900XT over a lowly punny 7900GT. The extra money (like $40USD) get's you a card that is often twice as fast or more. The x1900XT also gives you AVIVO video playback (best in the business), AVIVO Transcoding and Encoding of video (fastest in the industry), 48 Shader Units with 2 ALU's each (most powerful DX9 Shader implementation to date is in the x19x0 series), High Quality Anisotropic Filtering (angle independant) for crisper textures and the gaming industries best RAMDACS (for the clearest, sharpest images no matter the resolution).
It's major downfalls are that it's a bit more noisy and that it's not as fast in OpenGL games compared to it's intended rival the 7900GTX (it's faster then a 7900GT in OpenGL though).
Asus P5B P965 Motherboard $159USD
Intel Core 2 Duo E6300 2MB Cache $193USD
Connect3D x1900XT 512MB Video $235USD
G.Skill PC2 6400 DDR2 Memory $184USD (OCZ has problems with P5B)
AMD system completely not worth it. Especially not for the price range you're contemplating (I mean you mentioned a 4200+). Also the Core 2 Duo overclocks quite well. I helped a guy achieve a modest 2.4Ghz (could easilly have gone higher but he only wanted 2.4Ghz). That places the E6300 almost on par with an E6600 which is faster then ANY AMD CPU (including the FX-62).
I won't lie.. I preffer gaming on my Widescreen do to a personal preference.. but it is not supported by most games. Therefore for gaming a conventianal 4:3 is better then a Widescreen. But for everything else, Widescreen gives you most space to do more work on your desktop.
reason i went amd was i thought it performed better in gaming
I use my pc for mostly games///flash , and then aim myspace etc
good idea on just listing parts with links
I went Nvidia because idk if radeon made a sli card and i wanted to get the "newest technology"
SHould i go ws or not ws monitor wise?
i know very little about mobo's and sound cards what would u suggest fore the core 2 build and what would be a decent soundcard? or should i jsut stick with onboard audio
Core 2 is MUCH better for games or anything else.
ATi's Radeon card supports Crossfire (ATi version of SLI). It's a better card and two x1900XT's (x1900XT&x1900CF) in Crossfire will beat out any 7900GT SLI in pretty much EVERY game. (sometimes by an amount of 2.5times faster.
If you go for the P5WDH Deluxe then yes.. onboard audio is pretty good and support Dolby Digital Live! If you go for P5N then the onboard sucks.
mainly because i like the way that the pci e slot is seperated from the others so that when a beefy(er) video card goes in, it wont block out one of my other slots.
people are having trouble with the ocz ram, so i went with patriot instead this ram
even though it is slower, the speed wont make a difference unless you are going to overclock the processor. your faster ram will run at a slower speed due to the fsb and such, i blelive that this ram is even fast for a non-oc system and will be downclocked.
the only reason i would ever consider wanting an sli mobo would be to have the cabability to add a second gpu if the whole nvidia sli physics thing catches on, which seems unlikely with quad core cpus later this year (heck, if graphichs, sound, and physics are left to addon cards, what will be left for the processor to tackle?)