Beauco

Hi,

can someone explain to me why my taskmanager only shows one CPU and my device manager recognises my PC as "ACPI multi processor PC" and shows 2 processors installed? I am 100% sure HT is enabled in the BIOS.

ps: "view -> cpu history -> one cpu per graph" is greyed out

pps:
ASUS P4C800-E Deluxe
P4 3ghz
2048MB RAM
2x120GB SATA in RAID1
MSI FX5900XT

jmke

Problems with the Windows install?

do you see 2 processors when loading up CPU-Z ?

did you install XP/2000 with HT enabled in the BIOS ?

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Beauco

Hi,

installed and ran cpu-z and it only finds one CPU.
HT has been enabled from the day I got it.
When I first installed my XP Isaw the two processors fine in Taskmanager it wasnt after I ran a repair explained in this Topic that this has started to occur.

But still ... how come Device manager DOES see 2 processors? Can this be a XP trick to use the HT technology but mask it as 1 CPU?

ps. the doc post says ACPI uniprocessor PC, my device manager says ACPI multiprocessor PC

jmke

I think you should reinstall the XP install, something gone wrong with the APIC upgrade/install

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Beauco

Bugger, actually dont want too!

fearing I will have the same drama getting my FX5900XT to work as I had last time!

So are you 100% sure that although XT seems to recognise the multiple CPUs (device manager), there is something wrong here?

jmke

try to revert the steps you took to get the APIC set up.. that "should" work.. "should"

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Beauco

I guess!
here is what I think I will do;
- run aquamark3 now to get a baseline (current 3dmark03 score is 5428 btw)
- repair XP without pressing F5 to get normal install as before
- run aquamark3 and 3dmark03 again to get a score to compare.

tnx so far, I will let you know how I get on!

jmke

The HT will increase your Aquamark Score


http://www.madshrimps.be/?action=get...&articID=10 1

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Beauco

Ok, here is what I did: (results are pretty weird)

- Tests run with "dodgy" XP:
3DMark03 score: 5420
AquaMark score: 36814 (GFX:4746 CPU:8204)

- Repaired XP without "F5" -> HT recognised again!!! Still ACPI multiprocessor in Device manager but now also 2 CPU's in task manager and CPU-Z sees 2 CPUs too.

- Tests run:
3DMark03 score: (I broke a record by holding my breath over 10 mins while it ran ) 5425
AquaMark score: 36782 (GFX:4641 CPU:8862)

So .... my CPU score went up as expected (although I expected it to be higher) but my GFX score dropped 100 points ?!?!?

Weird ****, but anyway ... tnx for your help!

:slotje:

jmke

straight from the APIC topic ->

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