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About dual HDDs, at the Nividia SLI guide, they recomend two HDDs, why would they recomend two hdds? what advantage would that have for the videocard?
The reason is the cards need a place for the swap-file for games (where textures and such are temporarily cached). The reason they recommend two is because it wouldn't be efficient for your OS, game (especially ones like Doom 3), and the swap-file all running on one single hdd. Hope that helps.
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I havent really read up on them, but I thought amd's opteron was like intel's celeron (basically junk for games). If this is the case, why would anyone want dual opteron processors?
Actually that was the Duron, which is a lot older(and discontinued if I'm not mistaken). It has now been replaced with the Sempron, which is the competitor of the Celeron D. Opteron is new with 64-bit architechture, but right now its pretty similar to the AMD 64. I feel bad about buying an FX-55 now, these new Opteron's are coming out and are probably gonna kick its ass.