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Soleron said:

AMD sells 8-cores starting at $266 (2GHz Opteron 6128) and 12-core Opterons starting at $744 (1.9GHz Opteron 6164 HE). Those are list prices. They are for sale, but not on Newegg except the more expensive ones, so look around a bit and they will be there. Google has a few shops listed:

Cheapest 8-core: http://www.google.com/products?hl=en&q=opteron+6128
Cheapest 12-core: http://www.google.com/products?hl=en&q=opteron+6168

Server boards that support them are relatively cheap, like this one:

http://www.newegg.com/Product/Product.aspx?Item=N82E16813182230

If you need more cores than 12, then you can get 2P and 4P boards for the above, so up to 48 cores. And I believe Intel can do 8P 8-cores (so 64 cores) but for astronomic amounts of money.

 

As for desktop CPUs, neither Intel or AMD is going above six cores in 2010, but AMD now has some desktop 6-cores for quite cheap. A 2.8GHz 6-core Phenom II X6 1055T is $205 on Newegg:

http://www.newegg.com/Product/Product.aspx?Item=N82E16819103851

Awesome. I'll look harder for that 6128 around here, it's really cheap for an 8-core.

However as ithis and others mentioned, I have to check whether I really want to get a server CPU... It would be much better if I could also use the PC for a desktop, games and all. If not, I'll probably settle for a Phenom II X6 unless I can wait.

From what I've seen there are motherboards with the G34 socket (for Opteron) which support PCI-Express too, so it's not like the Opteron can't be used for a desktop.

Thanks everyone!

HappySqurriel said:

I would say that it would really depend on the nature of the application and the price range you were thinking of ...

One option would be to pick up a dual CPU motherboard and, while they are not that common, there are a couple of these motherboards designed around the i7 core for enthusiasts; and they’re in the $400 range. While I don’t have many specifics available about them, I’m fairly certain you could take one of these mother boards, combine it with 2 quad-core i5 processors, and get a decent amount of memory for less than buying one of the high-end 8-core processors.

I'll check out the prices for dual-CPU motherboards too, but on the Intel side I thought you needed Xeon CPUs for a multi-CPU system.

 



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