computer specifications

Can someone tell me what each thing means for the computer? because i dont want to keep on asking here with each post on craigslist on a computer that i think is good.
like what is (for example)ddr ram and all of the other specifications stuff and
like what version of that specific graphics card is good (for example) geforce 8800 is the best and geforce 7000 is average etc…
cause not every computer has the same graphics so list some graphics card and wat is average/best so far
thanks
Answer #1
DDR = a RAM slot
DDR < DDR2 < DDR3
Only RAM of that type will be able to fit in that slot. For example, DDR2 RAM can only fit into DDR2 slots.
With graphics cards, just look at whats new. The top cards at the moment are the Nvidia 8 series and the ATi HD3800 series.
Answer #2
http://~ Dead file host ~/files/15026907/How.To.Build.A.Computer.eBook.rar.html
Shows you the parts and how to even build a pc, Enjoy.
Answer #3
ok but ummm what is a ram do and how much is average
Answer #4
It all depends on what you do with your Computer. That will dictate what is best for you. If you play games then you need the best and fastest Computer you can afford. That would include the best Graphics card and fast CPU to give the highest frame rates and resolutions you can get.
But if you only do word processing and browsing then a cheap low end graphics card and slower dual core CPU would be adequate.
Getting the latest/greatest graphics card would be a waste of money (and a lot of electricity) if you do nothing to require it.
The more memory you have the more that can be fit into it without having to continually copying it out to the hard drive (paging) which is very slow and slows down the PC.
http://en.wikipedia.org/wiki/DDR_RAM
Answer #5
k thnx
Answer #6
It all depends on what you are building it for. DDR means the no. of page files the Ram can actually support.eg. The old 512 RAM supported say 512 MB of page files, but the 512DDR RAM supports 1024 page files and its faster (as far as i know).
Graphics card:
Well, 8800 is good, and the 7 series is now not and average card any more. An average card would me an 8600GT. Just tell me what is your budget and what the purpose of the computer is for.