Computer died, time for an upgrade

[MidnightLamp]

My gfx card conked out today, so I thought its about time for an upgrade!

Asus P5LD2 Deluxe Intel 945X (LGA775) PCI-Express Motherboard (MB-108-AS)

Sapphire ATI Radeon X1800 XT 256MB GDDR3 AVIVO TV-Out/Dual DVI (PCI-Express) - Retail (GX-121-SP)

Intel Pentium 4 940 Dual Core "LGA775 Presler" 3.2GHz (800FSB) - Retail (CP-113-IN)

I use my computer for audio work, as well as gaming and heavy multi-tasking.

I'm guessing I'll have to also buy some DDR2 ram, as currently I only have DDR? I've really gone over my budget already, so would look to spend max £70 on memory. Any thoughts?
I've got an old Zalman low noise CPU fan that I thought I could use but how hot do these dual cores tend to get?

Thanks

 

[MidnightLamp]

Thanks for the posts, I'm gonna go with the AMD.
How would the above motherboard compare to the A8N-SLI Premium?

I'm gonna add some more ram too. At the moment all I've got is this stick of corsair 512mb 3700. Would I still be able to use that as well if I bought 1gb of corsair (or any other brand) at a different speed? OC no longer stocks the 3700.

edit: yeah the 9800pro is bust. I'm gonna go with the Sapphire X 1800xt 256mb.

 

[MidnightLamp]

hmm, it's never easy
I'll be keeping my current pentium and mobo, as later this year I'm building a family computer. I guess my current ram will be used in it too, so maybe I should just get 2gig of ram and be done with it.

I originally thought on the pentium as it's always been the case in the past people have recommended them over AMD for audio/video work. But having read around the forums a bit, it seems the majority are in favour of the AMD, and I do game quite a bit.

 

[MidnightLamp]

ok, I think I've decided.

AMD opty 170
Asus A8N-E nForce 4 Ultra
ATI X1800 XT 256 mb

I'll get another 512mb stick of corsair 3700 to go with my current one. This should allow for a decent overclock?

Its either that or getting the AMD 3800+ dual core and 2 gig of ram.