new computer help

Thinking about a new computer. I want it for audio and video processing.Currently I have AMD 2100+ for the most part it works fine but when I process digital video and convert for dvds it take 4-5 hours to process.

I'm going to have it built so unless someone advises aginst it these are my options

Intel Pentium 4 Processor 3.0GHz, 800MHz FSB, Socket 478 Retail
Axio PC case w/ 480watt
Asus P4P800S Pentium4 478Pin (800FSB) DDR Motherboard (MB)
RAMBUS 512MB 800MHz Memory

Is there a resone to go with the more expensive memory?

Or go AMD

AMD ATHLON 64bit 3200+ RETAIL CPU
same case
Asus K8V-X Via K8T800 Athlon 64/Sempron Skt754 DDR ATX Motherboard
Kingston 512MB PC3200 400Mhz Memory(or orther major brand)

This would be in my price range but if I can get some input that would be great

 

I think that was wrong memory


This is what I'm coming up with. All for about $630 unassembled.(1 HD) I want to see if they will put it together but have no link. They do have about a $10 charge for each to test. I'll pay the $40 but put it together and test it right.

Intel D865PERLL Socket 478 Mobo, 800FSB, DDR400,


Intel P4 3GHz-E 1MB L2-Cache 800MHz Socket 478 Microprocessor, w/ HSF, Prescott Core
Two Kingston 512MB 400MHz DDR


Silver w/ Black MGE Sidewinder Mid-Tower Case w/ Side Window 450W Power Supply


Western Digital WD1600JB Caviar SE 160GB EIDE Hard Drive, 7200RPM, 8MB Cache, OEM

or this HD is the ATA better than EIDE?


Western Digital Caviar SE Serial ATA 160GB Hard Drives (WD1600JD), 8MB, 7,200RPM, OEM