Pentium4 2.8Ghz speed help needed - Page 2

outlnder · 2006-08-18, 18:07

I would bet that you also have a crappy chipset. CompUSA is not known for using quality motherboards. If they are using a generic motherboard, who knows what northbridge chipset is in there.

Remember, those benchmarks are using top rated motherboards, ram and the best chipsets(usually Intel for a P4).

rx7350 · 2006-08-18, 20:00

I have a very similar problem with a case-less build I did to run Prime95 exclusively.

System specs:
PD805 dual core 2.66 Ghz oc'ed 5% to 2.81 Ghz
Asus P5PL2 mobo w/Intel 945PL northbridge chipset
Sapphire Radeon 9250 GPU 128Mb AGP
OCZ 512Mb (2x256Mb) DDR2 533Mhz
Zalman CNPS9500S cpu cooler (75+ cfm airflow in a case-less system)

When I overclock 5% from stock speed, the interation times drop. When I attempt to overclock 10%, iteration times increase drastically. In all scenarios, I'm running ThrottleWatch, and no throttling is indicated, all the while NOT USING on-board graphics.

I gave up, and just let it run with a 5% overclock - couldn't figure out anything else to do.

I had tried another build previous to this one, using a faster processor
(PD930), and the iteration times were four times what the benchmark page said they should be.

I wish I could figure this out, because Intel PD9xx chip prices are very low right now, and I'm in the mood to build another system (PD950) to run
Prime95, but concerned that I would get the same 'slow-iteration' results. It would be easy to overclock that thing to 4Ghz.

Clyde83 · 2006-08-18, 20:34

When I get home I'm going to try safe mode and recheck cpu temp again to make sure I'm ok there.

Q: If my video may be taking up cycles then why under Task Manager does Prime95 show 98-100% usage unless I move the mouse with in taskmanager then that shows 1-2% wouldn't other items such as a video driver or the like show a larger %?

Is there any software test I could run to see what is using the cycles to find this problem?

Is the reason why CompUSA chipsets don't work real good because they buy the runoff batches from Intel/AMD? How can those chipset be any worse/better than what Intel is shipping? I would think they are the same since Intel would want to ship substandard chipsets....maybe I'm wrong here I could understand a poor performance motherboard.

Would running in Safemode bypass my Video they have setup?

Thanks again
Clyde83

Uncwilly · 2006-08-18, 21:52

Quote:

Originally Posted by Clyde83

Would running in Safemode bypass my Video they have setup?

It runs a plain 640x480 16color (or other depending on the version of windows). No extra acceleration or whatever on the graphics. Also Safemode doesn't load a variety of other drivers. One on my systems would gain 5-10% by going to safemode.

paulunderwood · 2006-08-18, 22:51

Quote:

Originally Posted by Clyde83 View Post
Would running in Safemode bypass my Video they have setup?

No

Have a look in BIOS, accessed by either pressing the "[del]" key or the keys "[ctrl]+[F1]" repeatedly (because I can't remember the best time to do it) when your computer boots. See how much system the onboard graphics (

) is set to. Reducing this might help... But much better is to grab a dirt cheap pci graphics card and install that into "pci slot 1". This will automatically cut out your onboard VGA. And if it doesn't, go into BIOS and switch "primary graphics" to PCI.

As well as using the PCI slot, you could alternatively use an AGP card. If you have AGP video card then be careful to never put a 3.3v into a 1.5v slot!!!! If you find a half decent AGP card and have sufficient main ram, then set the "AGP aperture" in BIOS to twice the size of the graphic card's physical memory. Do not exceed the aperture size above motherboard memory. Then thing should run nicely.

How much do you need to run Windoze?

I've got a computers running with a 2MB PCI card when I need to access VGA -- most of the time it runs with the VGA card card removed and I control it through a network -- but I run Linux.

paulunderwood · 2006-08-18, 23:14

Quote:

Originally Posted by rx7350

I have a very similar problem with a case-less build I did to run Prime95 exclusively.

System specs:
PD805 dual core 2.66 Ghz oc'ed 5% to 2.81 Ghz
Asus P5PL2 mobo w/Intel 945PL northbridge chipset
Sapphire Radeon 9250 GPU 128Mb AGP
OCZ 512Mb (2x256Mb) DDR2 533Mhz
Zalman CNPS9500S cpu cooler (75+ cfm airflow in a case-less system)

When I overclock 5% from stock speed, the interation times drop. When I attempt to overclock 10%, iteration times increase drastically. In all scenarios, I'm running ThrottleWatch, and no throttling is indicated, all the while NOT USING on-board graphics.

I gave up, and just let it run with a 5% overclock - couldn't figure out anything else to do.

I had tried another build previous to this one, using a faster processor
(PD930), and the iteration times were four times what the benchmark page said they should be.

I wish I could figure this out, because Intel PD9xx chip prices are very low right now, and I'm in the mood to build another system (PD950) to run
Prime95, but concerned that I would get the same 'slow-iteration' results. It would be easy to overclock that thing to 4Ghz.

I have a Asus PV5D1-X running 3.09 with FSB at 133-->155 -- rock solid. See here. The only thing I've done since is to use two system fans.

I'm gettin a (cheap) Asus PV5DC-X -- almost the same board but with potential for DDR and DDR2 and full size fake PCIExpress 16x -- runs at 4x. I'm hoping to get a similar or better clock for another PD805 with 1 DDR400 memory chip. It takes memory upto 555MHz (PC4200). (I will also be plugging a 20pin power supply into a 24pin socket as I won't be using PCIExpress.) Maybe it would be good for a PD950

paulunderwood · 2006-08-19, 00:46

Quote:

PV5D1-X

P5VD1-X

Quote:

PV5DC-X

P5VDC-X

paulunderwood · 2006-08-19, 01:24

According to http://en.wikipedia.org/wiki/Pentium_D the PD945 seems a better chip than the PD950.

Quote:

¹ - First batch of Presler processors (revision B1) have EIST feature turned off by microcode update because of stability issues. This affects only idle power consumption and thermal dissipation. Chips with working EIST will start shipping in Q2 2006. They will have different S-Spec number which can be found in Intel errata documentation, or here

And from http://en.wikipedia.org/wiki/List_of...icroprocessors it uses less power

Clyde83 · 2006-08-19, 18:15

Hello,

Well here's the latest on my Interation times. Recheck cpu temps with 3rd tester (found laser tester inaccurate off by 20+F. Found I could not actually make contact with cpu w/heat sink/fan in place. Removed heat sink/fan and found no thermal gel installed from factory. Fixed that & recheck temps.
At near middle of heat sink as close to CPU as possible with system Idling I get about 24-25C, w/Prime95 after 10 minutes I get 34-35C.

I found I have very good air flow over CPU area by large 3" wide x 3-1/2" long x 1-1/4" heat sink with EuroCool 3" fan on top and with a 5" fan right next to that pulling the heat outward. Very strong air flow through motherboard area.

Reran Interations and still @ 0.136ms per.
Ran system in Safe Mode and time back up to 0.151ms per just like before when video was set for 32bit.
Went out of safe mode and back to normal settings but with video set through xp home and it went back down to 0.136ms per.

Question what should my video memory be set at if I have 32meg video and 512meg system ram?

Sytem Memory specs are:512MB, DDR, 333, cl2.5

Ran Prime95 Benchmark basic results are:
70 Interation @ 512k FFT 33.537ms
23 Interation @ 1536 FFT 100.868ms
10 Interation @ 4096 FFT 284.691ms
TF M35000011 w/58bit 10.309ms
w/62bit 11.270ms
w/67bit 13.700ms
Hope this helps sure would like better times.
Clyde83

paulunderwood · 2006-08-19, 19:04

Quote:

Question what should my video memory be set at if I have 32meg video and 512meg system ram?

I assume you're refering to the onboard graphics. It will slow down your chip because the onboard graphics uses the boards resources heavily. These sort of boards are okay if you occaionally switch on the computer to do some word processing. The are practically useless for playing top video games. Set it much lower than 32MB and windows will not run properly

You need to get a seperate PCI (or not 3.3v AGP if you have the slot) graphics card. This will make p95 run twice as fast on you're computer.

paulunderwood · 2006-08-20, 17:45

I've just tested my pentium 2.8Ghz with LLR and there was only a 1% difference using onboard i685G against a low end AGP. This is with the simple terminal interface. I don't have X on that machine to test the difference using a graphical interface. I also tried a PCI card but the kernel panicked.

My claim of a 100% increase was exaggerated, but in a graphical environment it could be very significant.

Clyde83, does you monitor cable plug into the motherboard or into a card?

2006-08-18, 20:34	#14
Clyde83 Aug 2006 11 Posts	Current Speed Problem When I get home I'm going to try safe mode and recheck cpu temp again to make sure I'm ok there. Q: If my video may be taking up cycles then why under Task Manager does Prime95 show 98-100% usage unless I move the mouse with in taskmanager then that shows 1-2% wouldn't other items such as a video driver or the like show a larger %? Is there any software test I could run to see what is using the cycles to find this problem? Is the reason why CompUSA chipsets don't work real good because they buy the runoff batches from Intel/AMD? How can those chipset be any worse/better than what Intel is shipping? I would think they are the same since Intel would want to ship substandard chipsets....maybe I'm wrong here I could understand a poor performance motherboard. Would running in Safemode bypass my Video they have setup? Thanks again Clyde83

2006-08-19, 18:15	#20
Clyde83 Aug 2006 11 Posts	Ongoing speed Problem-lastest Hello, Well here's the latest on my Interation times. Recheck cpu temps with 3rd tester (found laser tester inaccurate off by 20+F. Found I could not actually make contact with cpu w/heat sink/fan in place. Removed heat sink/fan and found no thermal gel installed from factory. Fixed that & recheck temps. At near middle of heat sink as close to CPU as possible with system Idling I get about 24-25C, w/Prime95 after 10 minutes I get 34-35C. I found I have very good air flow over CPU area by large 3" wide x 3-1/2" long x 1-1/4" heat sink with EuroCool 3" fan on top and with a 5" fan right next to that pulling the heat outward. Very strong air flow through motherboard area. Reran Interations and still @ 0.136ms per. Ran system in Safe Mode and time back up to 0.151ms per just like before when video was set for 32bit. Went out of safe mode and back to normal settings but with video set through xp home and it went back down to 0.136ms per. Question what should my video memory be set at if I have 32meg video and 512meg system ram? Sytem Memory specs are:512MB, DDR, 333, cl2.5 Ran Prime95 Benchmark basic results are: 70 Interation @ 512k FFT 33.537ms 23 Interation @ 1536 FFT 100.868ms 10 Interation @ 4096 FFT 284.691ms TF M35000011 w/58bit 10.309ms w/62bit 11.270ms w/67bit 13.700ms Hope this helps sure would like better times. Clyde83

2006-08-20, 17:45	#22
paulunderwood Sep 2002 Database er0rr 3,739 Posts	I've just tested my pentium 2.8Ghz with LLR and there was only a 1% difference using onboard i685G against a low end AGP. This is with the simple terminal interface. I don't have X on that machine to test the difference using a graphical interface. I also tried a PCI card but the kernel panicked. My claim of a 100% increase was exaggerated, but in a graphical environment it could be very significant. Clyde83, does you monitor cable plug into the motherboard or into a card? Last fiddled with by paulunderwood on 2006-08-20 at 17:46

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2006-08-18, 18:07	#12
outlnder Aug 2002 100111110₂ Posts	I would bet that you also have a crappy chipset. CompUSA is not known for using quality motherboards. If they are using a generic motherboard, who knows what northbridge chipset is in there. Remember, those benchmarks are using top rated motherboards, ram and the best chipsets(usually Intel for a P4).

2006-08-18, 20:00	#13
rx7350 Feb 2006 AR, US 2⁴×3² Posts	I have a very similar problem with a case-less build I did to run Prime95 exclusively. System specs: PD805 dual core 2.66 Ghz oc'ed 5% to 2.81 Ghz Asus P5PL2 mobo w/Intel 945PL northbridge chipset Sapphire Radeon 9250 GPU 128Mb AGP OCZ 512Mb (2x256Mb) DDR2 533Mhz Zalman CNPS9500S cpu cooler (75+ cfm airflow in a case-less system) When I overclock 5% from stock speed, the interation times drop. When I attempt to overclock 10%, iteration times increase drastically. In all scenarios, I'm running ThrottleWatch, and no throttling is indicated, all the while NOT USING on-board graphics. I gave up, and just let it run with a 5% overclock - couldn't figure out anything else to do. I had tried another build previous to this one, using a faster processor (PD930), and the iteration times were four times what the benchmark page said they should be. I wish I could figure this out, because Intel PD9xx chip prices are very low right now, and I'm in the mood to build another system (PD950) to run Prime95, but concerned that I would get the same 'slow-iteration' results. It would be easy to overclock that thing to 4Ghz.