so I decided to upgrade my pc because some of the stuff that came with it sucks. before i buy the things though id like you to give me some tips and tell me if I chose the right thing for the money i've got available.
OS(Already have): Windows 7-x64
Graphiccard(upgrading from-to):nvidia Geforce 9400 GT 1GB to nVidia Geforce 250 GTS 1GB
RAM:2GB to 4GB..I've got a question for this one: Can i just buy another 2gb and add it into it, or do I have to buy a whole new one?
Processor-Intel DualCore E5300 to Intel Core 2 Duo E8400
Cooler-buying Thermaltake BigTyp 120 VX, I dont know what the cooler in my current pc is, but I dont think its too good so should I get the Thermaltake?
That's the only things im upgrading, because im happy with all the other things in it.
What is the RAM that is in it now? Also, if you are upgrading the motherboard then this wont matter, but if not what is the exact motherboard you have now?
Oh, also that gigabyte mobo won't work with either of those 2 processors.
1. Upgrading E5300 to E8400 won't give you a huge performance jump.
2. GA-P55A-UD3 is not compatible to any of those 2. E5300 and E8400 are LGA775 but GA-P55A-UD3 is not for them. For Upgrading to E8400, it seems that you don't need a new mobo, but to make sure..please post your current mobo.
3. Instead of nVidia Geforce 250 GTS get ATI HD5770.
4. About the RAM...I can not answer that because the mobo problem is not clear yet.
Your current RAM is most likely DDR2, but P55A is only compatible to DDR3.
5. The same goes for the proc. cooler.
1) Upgrading from a 9400GT to a GTS250 will be a good sized jump in gpu power. Assuming you will upgrade for gaming, that is good. You will need a 450W PSU with 24a on the 12v rails and a 6 pin pci-e connector. If you do not have this, plan accordingly. Corsair makes a good 450w unit: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
2) 4gb of ram is a good idea. Probably better than you think. http://www.corsair.com/_appnotes/AN804_Gaming_Performan...
If you will add 2gb, then get the EXACT same module/s as you already have. Some motherboards are very sensitive to mismatched ram. It might be a better idea to get a 4gb kit(2 x 2gb). Ram is not that expensive, and you could market your old parts on e-bay. With a different motherboard, you are looking at DDR3 ram.
3) E5300 to E8400 is a small jump so don't expect too much, particularly if you have overclocked your E5300. For gaming the graphics card is much more important. The E8400/E8500/E8600 still command a good price. For the same price you can get a 32nm i3-530 or better which is a much better cpu. The i3-540 would run on the gigabyte motherboard you mentioned, but the E8400 would not.
4) I think you can do better on a new cooler. I like tower type coolers with large slow turning 120mm fans. They direct the hot air directly out of the back of the case instead of recirculating it. Here is an example: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
It includes mounting for a variety of cpu socket types.(775/1156/1366)