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Dual CPU

By grafilem ·
Which Windows Operating Sistem support's dual CPU on a motherboard? Thinking of adding another CPU to my motherboard,,,

Luis

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Dual CPU

by dmiles In reply to Dual CPU

Windows NT4 and Windows2K/XP,would be your best bet,processing is best used to multi-threading processes,and Win95/98 would not show any performance gain in using a dual processor.

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Dual CPU

by grafilem In reply to Dual CPU

The question was auto-closed by TechRepublic

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by tjc In reply to Dual CPU

Also to add to what soulrider posted. In a lot of cases your applications have to be designed to operate with the dual cpus.

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by grafilem In reply to Dual CPU

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by Bob the Builder In reply to Dual CPU

Although NT4 is dual cpu capable W2K/XP is the best choice of OS for dual CPU environments as they utilise the processors differently from NT4. I have also heared a rummor that it is not a question of just poping in another processor but reinstalling the OS with both processors installed.

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by grafilem In reply to Dual CPU

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by karlww In reply to Dual CPU

Win 9x only supports a single CPU. Not sure about WinMe.

Therefore NT/2K/XP are your Windows choices.

There is a uni to multi cpu tool (at least for NT4 so I image there is one for 2K and XP) so you don't have to reinstall the OS to get it working.

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Dual CPU

by karlww In reply to Dual CPU

BTW, a 2nd CPU can gain you around a 10% improvement in performance (at the most, I've done some simple tests) in a single threaded application. This is because the system now has another CPU to multitask on. It will give precedence, if possible, to the processor that the process was last executing on in hopes that the cache might still be useful. A single threaded process can still gain a small boost by virture of the it might not get swapped out as often to allow other processes to run. Multi CPU systems also by virture of the fact there are multiple CPU's actually allow 2 (or however many) threads to truely run concurrently. This setup can expose problems too if multithreaded software is poorly written (we all know it happens!)

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by grafilem In reply to Dual CPU

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by grafilem In reply to Dual CPU

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