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Old 12-27-2003, 03:06 PM   #1 (permalink)
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Location: Prince George, British Columbia
Dual Processors?

Can anyone tell me why my new computer thinks it has 2 Cpus? In the DEvice Manager it lists 2 seperate Intel Pentium Cpus? And with the windows task manager is has to seperate graphs for "each" cpu. Can anyone tell me whats up? I knwo i didnt pay for 2 cpus, and I am pretty sure this new mobo does support 2 cpus.

I am kinda computer literate, but I have no clue as to why this is showing as it is.

Thanks.
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Old 12-27-2003, 03:10 PM   #2 (permalink)
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You most likely have a new Intel Pentium 4 processor with HT (hyper threading)

http://www.intel.com/technology/hyperthread/
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Old 12-28-2003, 06:39 PM   #3 (permalink)
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Yeah, the new P4's have two logical "processors" in one chip.

This allows for running two parallell threads of instructions instead of a single thread. They share all the processing units within the chip since many usually are idle when runnning only one thread of instructions. To Windows XP it looks like two chips.
You can usually turn it off in bios, but I have not seen it to have any drawbacks in published tests. The main thread will get all the power it needs when needed, the secondary takes the rest.
So it gives you some improved multitasking on some operating systems (like WinXP), and for some applications written for multi-threading. This can give up to 30% performance increase, under optimal conditions.
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Old 12-28-2003, 06:47 PM   #4 (permalink)
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That should have been a major selling point to the CPU you paid for. Too bad no one mentioned it to you.
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