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Whats better, 2 Dual Core Xeon or one Quad Core?
I need to configure a new Dell 2900 server and they are now coming with the Quad Core's. I can get 1 Quad Core 1.6 GHZ CPU for less then 2 1.6 Dual Core CPU's.
The biggest advantage i see over the Quad Core would be that i will have a free CPU socket to upgrade in the future. Any other thoughts? Any one know if the performance would be comparable between 1 Quad and 2 dual's?
Thanks.
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Answers
The quad core can benefit in some situations, though not all: http://www.tomshardware.co
Licensing might be an issue since this particular quad core is actually two dual cores in a single package.
Microsoft say the following in their document about multi-core licensing so you might need twice as many licenses if you're running SQL for example in a per-processor environment.
"Multichip modules are multiple, separate processors aggregated into one package or board. The multicore licensing policy does not affect licensing for multichip modules. For server applications licensed per-processor, a separate license is still required for every processor in a multichip module."
From andyalder:
"Licensing might be an issue since this particular quad core is actually two dual cores in a single package.
Microsoft say the following in their document about multi-core licensing so you might need twice as many licenses if you're running SQL for example in a per-processor environment."
If you are running SQL Server 2005 you can get a "per socket" license so you get 4 cores for the price of 1 (of course there is more to the licensing than that) We are currently addressing a similar situation at one of our core labs; just 2 socket licenses will give us 8 cores which comes in quite handy for database processing.
Microsoft SQL Server 2005 licensing policy on servers with multiple CPUs and multicore processors available at http://www.microsoft.com/s
In short, Microsoft charges by CPU, not by cores.
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by: SysExpertPosted on 2007-01-11 at 19:15:38ID: 18298782
I would think that a quad would be better than 2 duals since they are sharing the same core, cache etc so there should be a speed advantage.
It also depends on what you plan to use the server for.
The fact that you have an extra socket for expansion should be very persuasive in the longer term if you think the server will ever need more CPU power.
I hope this helps !