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2CPU.com » News » June 2003 » WinXP + HT = Broken?

WinXP + HT = Broken?

Posted by: Hooz on: 06/20/2003 03:15 AM [ Print | 2 comment(s) ]

According to the TR gang, the hyperthreading problems in Windows XP (detailed here) doesn't seem to have too much of an impact on "real world" benchmarks. The numbers post hot-fix don't change too much from the numbers pre hot-fix, so that should be a good consolation to those of you running HT enabled boxes... You haven't been missing much of anything.

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« 4P Opteron Benches at AMDZone · WinXP + HT = Broken? · Athlon 64 in August? »

Comment

vwilly
Registered User

Posts: 5
Joined: 2003-06-23

#23302 Posted on: 06/24/2003 05:33 AM

This problem is specific to SMP boxes with HT enabled.

The bench test that was performed is not valid!!

This problem occurs if you install Windows XP Service Pack 1 (SP1) on an Intel Pentium 4 computer that has .
more than one logical processor

Basically they did a test on a single CPU with HT enabled which does not fit into the context for this patch.

If you have an SMP Xeon with HT enabled then this patch will help. I have not done a personal benching but my overall performance has noticeably increased.

V.

Supermicro - X5-DAE
2 Xeons - 2.4 @ 533 w/ HT enabled
1024 MB ECC Reg Ram
GF 5900 FX Ultra

Comment

DavidC
Registered User

Posts: 1175
Joined: 2002-03-04

#23303 Posted on: 06/24/2003 10:35 AM

One single physical CPU with Hyperthreading has two logical CPUs. There is no distinction between the two that one is real and the other is logical, they are both logical CPUs.

DavidC

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2CPU.com » News » June 2003 » WinXP + HT = Broken?