Hi everyone i'm upgradeing my pc ,new mobo,cpu(intel 3.0ghz prescott 630),graphic card(geforce 7800),and i have 2 questions:
1st. i want 2 buy the ASUS P5ND2-SLI which has a DDR2 support but i want 2 use my 1024 KINGMAX DDR400 memory so i was wondering will it work?
2nd.which one do you recommend i buy the MSI,GIGABYTE,PNY,GAINWARD or ASUS 7800gt graphic card .THX

Sorry, Your DDR400 will NOT work in a DDR2 system. They are two different designs. You'll have to compromise somewhere.

Why Intel if you're gaming? AMD runs cooler and games faster than Intel right now...

I prefer Intel and i also do video editing and web designing and i think that intel does it job better than AMD.Anyway i have another question i found another mobo i like the asus p5gd1 and i was wondering if i buy a 2mb cache cpu will it work with the 1mb cache of the mobo?

I am pretty sure you are confused. motherboards don't have cache. To answer your question, the 2mb cache CPU will be fine in your board.

So what is better 2mb or 1mb cache ? what does it improve or do?
And i'm going to buy a ASUS GFORCE7800 GT and i read somewhere on the internet that if the mobo dosen't suport SLI the video card won't work?is that true ? will it work with my ASUS p5gd1 mobo?

2MB of cache is better. Cache holds instructions and data that were recently used by the processor in an onboard memory that is faster than RAM.

Whether you will actually notice the difference depends on what you use it for. In gaming, you probably will notice more difference by putting the money into a better graphics card than the extra cache. If you do a lot of CPU intensive ops (video editing or other mathmatically intense applications), than I would say get the 2mb cache.

For the graphics card, I usually use ATI, so I am not positive, but I am sure you do not need an SLI board to support the video card you want. You should only need an SLI board when you want two cards. There is no reason why it should not work with your board.

Thx to all who helped me i really apreciate it,thx 2 all and merry christmas!!!

I have final question it's about my HDD it's a 160gbWD not SATA and i have 2 optical drives,somebody told me that i don't have enough places to conect my drives,is that true?will my hdd and optical drives work?do i have to use a SATA 2 PATA convertor?thx

It looks like you should be fine using all the IDE devices with your board.

OK thx m8 i've ordered the CPU,mobo & a graphics tablet.The only thing remaining is the Video Card i'm stuck between a Leadtek Geforce 7800GT Extreme and a Gainward PowerPack! Ultra/3400PCX XP Golden Sample Geforce 7800GT,which one do you sugest i buy the Leadtek or the Gainward ?

Sorry, I don't know enough about those too to make a useful recomendation. From what I have seen, they both look like solid choices. I think the Leadtek may come with a little more bundled software if that matters to you.

They are both way better than my Radeon 9800Pro AIW!

THx m8 you've helped me alot THX again .

No Problem. Good luck getting everything working well together!