Overclocking a new Pentium D 920 - Page 4

RangerXLT8 · August 20th, 2006

Quote:

Originally Posted by gvblake22

Quote:

Originally Posted by jph1589

Well if we want to rewind a few posts, I mentioned that the 920 is idling about 12c lower than the 520...... 26c to be exact. Someone must have replaced my Katana 775 with a watercooling system when I wasn't looking.

The PSU is probably OK since the 920 draws lower wattage than the 520. So I won't add those to the list LOL

Yeah, I was mostly joking since you left the question as pretty open ended. I've plum run out of ideas for ya man. I think you have just hit the wall with your hardware. :?

In fact, if you look at page 74 of this Intel Spec sheet, the 520 has a TDP(Thermal Design Power) of 84w vs the 920 with a TDP of 95w. Overclocked, Preslers generate some SERIOUS heat. However that Sythe cooler should handle it well.

jph1589 · August 21st, 2006

I noticed when I ran the cpu test in the latest version of Sisoft sandra that I got this warning.

Warning W5003 - the benchmark has tested the primary CPU only. This may not reflect the total power of the system

Fix: Turn on the multi-processor option. You need to use Windows NT/2000/XP/2003 and the multi-processor kernel to use the other processors.
When I checked the device manager it shows multiprocessor computer and it shows two pentium d cpu's.

I can see two cpu graphs in the task manager and they are both being used.

Is this just an anomaly?

Lead Head · August 21st, 2006

Windows is not utlilizing one of the CPU's cores, you have to switch the kernel to APIC Multiprocessor..Im not sure how its done though

jph1589 · August 21st, 2006

Quote:

Originally Posted by Lead Head

Windows is not utlilizing one of the CPU's cores, you have to switch the kernel to APIC Multiprocessor..Im not sure how its done though

It already shows APIC multiprocessor in the device manage and it shows 2 pentium d 2.8s.

Lead Head · August 21st, 2006

Quote:

Originally Posted by jph1589

Quote:

Originally Posted by Lead Head

Windows is not utlilizing one of the CPU's cores, you have to switch the kernel to APIC Multiprocessor..Im not sure how its done though

It already shows APIC multiprocessor in the device manage and it shows 2 pentium d 2.8s.

Dunno then...are both cores being utlilized in the device manager?

jph1589 · August 21st, 2006

Quote:

Originally Posted by Lead Head

Quote:

Originally Posted by jph1589

Quote:

Originally Posted by Lead Head

Windows is not utlilizing one of the CPU's cores, you have to switch the kernel to APIC Multiprocessor..Im not sure how its done though

It already shows APIC multiprocessor in the device manage and it shows 2 pentium d 2.8s.

Dunno then...are both cores being utlilized in the device manager?

If you mean in the task manager, yes.

Lead Head · August 21st, 2006

Quote:

Originally Posted by jph1589

Quote:

Originally Posted by Lead Head

Quote:

Originally Posted by jph1589

Quote:

Originally Posted by Lead Head

Windows is not utlilizing one of the CPU's cores, you have to switch the kernel to APIC Multiprocessor..Im not sure how its done though

It already shows APIC multiprocessor in the device manage and it shows 2 pentium d 2.8s.

Dunno then...are both cores being utlilized in the device manager?

If you mean in the task manager, yes.

ok

Nasgul · August 23rd, 2006

Quote:

Originally Posted by jph1589

I've already tried the 250mhz FSB. But I haven't tried to run the memory at 750 with a 2.2v. I'd like to be able to sleep tonight without smelling burned silicone The default voltage for this memory is 1.8v. I've taken it to 2.0 to test it's ability to OC and it won't go higher than 600mhz.

I know better than to get into this with you though. I remember too well.

No wonder why it won't go any higher, 2.0Vdimm is weak, if you're going to do a 250/750 (which is a 2:3 ratio), you're better off with a 250/250 for a 1:1 ratio and leave it at 2.0v.

jph1589 · August 24th, 2006

Quote:

Originally Posted by Nasgul

Quote:

Originally Posted by jph1589

I've already tried the 250mhz FSB. But I haven't tried to run the memory at 750 with a 2.2v. I'd like to be able to sleep tonight without smelling burned silicone The default voltage for this memory is 1.8v. I've taken it to 2.0 to test it's ability to OC and it won't go higher than 600mhz.

I know better than to get into this with you though. I remember too well.

No wonder why it won't go any higher, 2.0Vdimm is weak, if you're going to do a 250/750 (which is a 2:3 ratio), you're better off with a 250/250 for a 1:1 ratio and leave it at 2.0v.

I never had to do that while overclocking my P4 in this same setup. Do you know why that might be?

jph1589 · August 24th, 2006

She is screaming along at 1040MHZ FSB ......3.64ghz.

It had nothing at all to do with the memory.

There is a hole in the FSB range in which it will not post. It runs fine up to 920 FSB and then it won't post again until somewhere above 1000 FSB. I realized there were sometimes gaps in the FSB where the cpu can be picky and not post, but I had no idea that the gap could be that large.

As my daughter would say.......THIS IS REALLY SWEET!!

August 21st, 2006	#32
jph1589 Join Date: Aug 2006 Posts: 367	Testing I noticed when I ran the cpu test in the latest version of Sisoft sandra that I got this warning. Warning W5003 - the benchmark has tested the primary CPU only. This may not reflect the total power of the system Fix: Turn on the multi-processor option. You need to use Windows NT/2000/XP/2003 and the multi-processor kernel to use the other processors. When I checked the device manager it shows multiprocessor computer and it shows two pentium d cpu's. I can see two cpu graphs in the task manager and they are both being used. Is this just an anomaly?

August 21st, 2006	#33
Lead Head Join Date: May 2006 Location: Rhode Island USA Posts: 1,716	Windows is not utlilizing one of the CPU's cores, you have to switch the kernel to APIC Multiprocessor..Im not sure how its done though Opteron 64 165--1.5GB DDR--ECS KA1 MVP(thanks HL!)--x1800GTO 256MB--Seagate 320GB SATA--Antec 550 Watt--Antec P180

August 24th, 2006	#40
jph1589 Join Date: Aug 2006 Posts: 367	Mystery solved She is screaming along at 1040MHZ FSB ......3.64ghz. It had nothing at all to do with the memory. There is a hole in the FSB range in which it will not post. It runs fine up to 920 FSB and then it won't post again until somewhere above 1000 FSB. I realized there were sometimes gaps in the FSB where the cpu can be picky and not post, but I had no idea that the gap could be that large. As my daughter would say.......THIS IS REALLY SWEET!! Commodore 64 overclocked into outerspace

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