Hi! 1st let me put my sys. info - M.Board - Intel D101GGC CPU - Pentium 4 RAM - 512 DDR400 + 512 DDR333 (max capacity 2gb) In-built video card - Yes PCI Express Slot (X16) - Yes The thing is i am unable to play Hitman 4 Blood and Money in my system. I recently added 512 DDR333 mhz. is it ok if I already have 512DDR 400mhz? My friend said it should go with it but the 400 will work like 333 mhz. And more importantly i want to add a graphics card to my system. i learnt that increasing the ram or adding a video card is numb until your CPU is good. so whats the best way to match the video card and CPU? and what about power supply will i have to upgrade it?

If you pair up two sticks of RAM of different speeds, both sticks will run at the slower speed. Since you have a P4 (yuck), what is the FSB speed? If it's 533MHz FSB the proper RAM is DDR333. If it's 800MHz FSB, the proper RAM is DDR2-533, however, if your board doesn't support DDR2, DDR400 would be the correct choice...anything else will bottleneck the system. If you're using onboard graphics, adding an actual video card will definitely improving gaming performance, regardless of the CPU. You have to be reasonable though....don't pair up a top of the line video card with a weak CPU. Just a guess....the best choice for you would be a Radeon HD4670. No need to worry about the PSU if you get that card. http://www.tomshardware.com/reviews... EDIT: I just checked your board specs. It doesn't support DDR2 so the correct choice of DDR333 or DDR400 will depend on the CPU FSB. http://pentium.com/products/motherb...

hi jam! that was awesome. thanks man. FYI - this is what printed on the intel board packing box - supports 800/533 Mhz system Bus. I guess its a good one. by the way, why did u yuck at the P4. At the time of purchase (may '05) the techie said it is the best compatible. till now no regrets. its working fine. but is there an option to upgrade CPU in the same board? how much will it make a difference in performance? the box says it can take both P4 and Celeron D. is Celeron D better than P4? Open my eyes..... many thanks. Devraj

Are you there? helloooo....

Regarding your question about Intel P4 vs. Celeron, you would have to compare them according to specs (clock speed, onboard cache, etc.). This may be overkill, but check out the various charts on the following website to answer your question about which processors are better than others: http://www.cpubenchmark.net/ (BTW, I also have a P4 in my PC, but I really don't do any gaming, so it serves me well.) 1 Corinthians 15:3-4