Sigh.. Time to go point by point again.
A good gaming processor is AMD Phenom II X2 555 or 550. Windows does not utilize multiple processors compared to other operating systems.
Wrong. Windows has been an SMP OS since NT.
Stay away from Samsung hard drives because they have the worst latency. Hitachi and Western Digital are the best. On a budget Western Digital Blue series are great. Do not buy the Black series because do not perform well compared to the Blue series.
Wrong. The WD Black is faster (marginally) than the WD Blue and the F3 hangs with both.
http://www.bit-tech.net/hardware/storage/2009/10/06/samsung-spinpoint-f3-1tb-review/3
ATI is OK if you do not mind crashing. ATI software is pathetic compared to nVidia. nVidia is better all around. At the resolution you going to use, I suggest nVidia GeForce GT250.
Both sides have put out crappy drivers from time to time. Remember when Nvidia put out drivers that killed cards?
Enermax and Seasonic are better at the lower wattage compared to Silverstone. Another power supply that makes power supplies for Zalman is FSP.
All you listed are good, though I would put Seasonic and Silverstone over FSP. Enermax is hardly relevant anymore because of their terrible bang for buck.
If this is your first time build, do not go with ASrock motherboards because there is no warranty besides from the store.The motherboards that I recommend for first time builders are Gigabyte and MSI. I do not like ASUS because some of their motherboards might be refurbished, so you could have problems. I strongly recommend buying the processor, memory and motherboard from a local store like a family own business or any professional computer store. They will be able to test the parts and make sure they are working.
ASRock boards DO have a one-year warranty. It is simply serviced through the retailer instead of through ASRock directly.
As for ASUS motherboards, if it says New, it's New. Have open box motherboards been accidentally shipped out instead of a new one? Sure, accidents happen.
Lite-on optical drives are OK. They are noisy and the quality is not great. ASUS and Plextor are better brands for optical drives.
All of the $20 drives are pretty much the same these days.
The following list is what I suggest if you want quality while being on a budget.
ASUS 24x DVD Writer SATA Model DRW-24B1LT
Rosewill CHALLENGER Black Gaming ATX
Western Digital Caviar Blue WD3200AAKS 320GB
MSI 870A-G54 or MSI NF750-G55
G.SKILL Ripjaws Series 4GB (2 X 2GB) DDR3-1333 F3-10666CL7D-4GBRH
PNY XLR8 VCGGTS2501LXPB GeForce GTS 250 1GB 256-bit GDDR3
ENERMAX Tomahawk ETK500AWT 500W
AMD Phenom II X2 550
The list totals $594.92 at newegg.com. The MSI NF750-G55 has on-board graphics that can handle 1024 by 768, so you can hold on buying a dedicated video card. First time builders should go with retail instead of open box for the motherboard.
I agree that you probably shouldn't get an OB mobo. However, some of your suggestions are just whack.
Why would you recommend and old 320GB-platter drive, when $10 more gets you a
1TB 500GB-platter drive?
Why would your recommend a GTS 250 when $25 gets you a 5770 that is significantly faster?
Why would you recommend a 635 or 445 are around the same price, yet have more cores? They are very close in clock speed and core count is becoming more and more important for games.
A new faster computer will not fix the issue about quality settings in a game unless you are CPU limited. That is the video card. It is best to buy a new video card like a nVidia GeForce GTX 280 or 285. A GeForce GT480 will be a lot better.
Pretty sure we've already established the bolded.
Also, are you seriously recommending a GTX 285 when a cheaper GTX 470 completely outclasses it?
OP, I think what you're currently planning to do makes the most sense, IMHO. Just upgrade the GPU and RAM to see how much improvement that gives you. If you're still not happy, you haven't lost anything and because you can reuse those parts in a new build.