Athlon 64 or Opteron?

[Earl]

Building a server running linux (Prob Gentoo). Should I go for an Opteron or Athlon?

Also any comments on what i've selected (Went for athlon at first):

1 x Seagate ST3300831AS Barracuda 300GB 7200RPM SATA/150 8MB Cache - OEM £73.40 £73.40
1 x AMD Athlon 64 (ADA3700BNBOX) 3700 CPU Skt 939 San Diego Retail inc Heat Sink Fan 3 Years Warranty £126.38 £126.38
2 x CRUCIAL 1GB DDR PC3200 400MHz 184-PIN UNBUFF 128MX64 Memory Modules £48.92 £97.84
1 x Asus A8N-VM S939 NVC51G/MCP51G Matx - Vga Sound Lan USB2 Fsb1000 Sata £41.56 £41.56
1 x Arctic Cooling T1 Silentium 350W Seasonic £45.94 £45.94

Does Sata150 work with a Sata2 board? and Would I be better getting a 250Gigs Sata300 HD for £65 instead?

 

[Earl]

Forgot to add, thats £460 in total.

 

[TdC]

um. the opt is a very cool chip, but pricy. I'd only get it if your server was an extremely serious one and going to have more than one CPU in it.

as to SATA or SATAII. the only possible reason I can see to possibly get II is if you're going to stick lots of drives onto a great bit RAID card, as I disks are already very fast and you'll never be able to fill the bandwidth available with <4 disks, and >=4 disks is strange if you're not on a card imo. unless you have great faith in your disk virtualisation software.