Easy, Jay's suggestion would be great. If it was January. But it's not.

If you're going crossfire in the future.

DFI Lanparty UT RDX200 CF-DR $269CDN @ infonec.ca
Socket 939 Opteron 146 (more expensive than the 144, but that extra multiplier can help in OC'ing) $195 @ infonec.ca
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$464

if you're going Non Crossfire/SLI:
DFI Lanparty UT Ultra D- $155 @ infonec.ca
Socket 939 Opteron 146 - $195 @ infonec.ca
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$350

SLi:
Asus A8N-SLI PREMIUM $203 @ infonec
Socket 939 Opteron 146 @ $195 @ infonec.ca
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$398

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