DELL mobo overclocks

heffo9

for anyone with a dell m/c who might want to overclock there cpu. well here is a link explaining how to do it with cpucool.scroll down to warlock
http://forums.techpowerup.com/archive/index.php/t-2164.html
i've doin it and it works.

Nukem

What you have and what did you OC to?
Tried from the Dell mobo and nadda! Trying to get an ASUS mobo in the next week and the OC a 2.8 NW to bout 3.2 on air/ wishful thinking i reckon.

Nukem

unkel

Nukem wrote:

Trying to get an ASUS mobo in the next week and the OC a 2.8 NW to bout 3.2 on air/ wishful thinking i reckon

Not at all, that's very modest

Aim for 3.5 stable but be happy if you get slightly less. Are you getting a mobo with the 875 chipset? Also check the temps and I presume you have a reasonably well ventilated rig and a PSU that's up for an OC?

weeder

im deffo gonna try this one later

Nukem

unkel wrote:

Not at all, that's very modest

Aim for 3.5 stable but be happy if you get slightly less. Are you getting a mobo with the 875 chipset? Also check the temps and I presume you have a reasonably well ventilated rig and a PSU that's up for an OC?

Its a 865PE chipset (asus p4p 800) and will be in an Antec 1080 File sever 5*80mm fans - must get a decent heatsink too and the PSU is 430w so i should be ok.

Nukem

unkel

Nukem wrote:

Its a 865PE chipset (asus p4p 800) and will be in an Antec 1080 File sever 5*80mm fans - must get a decent heatsink too and the PSU is 430w so i should be ok

I only had the 865 chipset in my Abit AI7 and it overclocked grand (3.6 stable on a 3.0 and more importantly: quiet). I presume the PSU is Antec too?

If not, post make / model. 430w on its own means nothing. Don't ever OC on a crap PSU - in fact, don't ever use a crap PSU

jesus_thats_gre

Nukem wrote:

Its a 865PE chipset (asus p4p 800) and will be in an Antec 1080 File sever 5*80mm fans - must get a decent heatsink too and the PSU is 430w so i should be ok.

Nukem

Had the Asus P4C800-E Deluxe with a 2.8 Prescott with a ThermalRight XP-90 and ran stable at 3.5GHz nop problem at all.. 380W power supply with 4 HDDs, 2 DVD drives and a 9800 Pro overclocked to 438 on the core..

unkel

jesus_thats_gre wrote:

Had the Asus P4C800-E Deluxe with a 2.8 Prescott with a ThermalRight XP-90 and ran stable at 3.5GHz nop problem at all.. 380W power supply with 4 HDDs, 2 DVD drives and a 9800 Pro overclocked to 438 on the core..

Hey some real life proof of my point!

Nice OC on the 9800pro btw

Nukem

Ya its an Antec 430w so should be ok. Just reading there that the highest a 2.8 Northwood stable was 3.73 on air so i think may push it away happy.Did you use the Bios or software?

Nukem

unkel

Nukem wrote:

Did you use the Bios or software?

BIOS

Some manufacturers have some interesting software options these days from within the OS. I'm sticking to my BIOS guns for now, but I'd be interested in any OS solution

heffo9

here is the overclock, i have a gigabyte 3d cooler(air) on the cpu.
it is pretty stable. i got an xtra 2000 points in 3dmark 2001. i scored approx 14400 with no oc. then with processor oc i got 2000 extra, then with new dna drivers for the graphics card i got another 2000 points. my scores are published on the madonion, orb

Nukem

Excellent man. Congrads

heffo9

cheers!

Kazu

what model dell was it and what fans did you use

jesus_thats_gre

What technique is actually used for this?

heffo9

it is a dell dimension 4600, modded into a thermaltake shark case. i have a gigabyte 3dcooler heatsink on the processor http://www.frostytech.com/articleview.cfm?articleID=1554,.

here is a cut and paste of the method from warlock:

While Dell offers no overclocking options whatsoever in the BIOS and in fact uses a PLL that was supposed to be designed to not modifiable, it turns out that one can still overclock.

Step 1) Check to see if the Dell uses the ICS 952601 PLL. See either:
http://www.podien.onlinehome.de/FSB.HTM
http://mitglied.lycos.de/podien/FSB.HTM
for more information.

Step 2) Download and install cpucool available from:
http://www.podien.onlinehome.de/CPUCOOL.HTM
http://mitglied.lycos.de/podien/CPUCOOL.HTM

Step 3) Run cpucool and go to Functions->Change front side bus/change CPU speed

Step 4) Under PLL manufacturer, pick ICS and under PLL type, choose 952607

Step 5) Click on the Fine tuning button

Step 6) Adjust the Frequency using the buttons at the top and adjust to a reasonable overclock value.

Step 7) Hit Freq Set and the system will be overclocked immeadiately. However, not all programs will register it, but CPU-Z and benchmarks that don't rely on processor cycles will show it.

Step 8) Reboot, and then all programs will recognize the new speeds

http://www.telusplanet.net/~sulee/DellOC.png

This procedure has worked for the Dell 400SC and a Dimension 4600. It should be no different for other Dimensions.

Credit goes to:
http://www.aaltonen.us/forums/viewtopic.php?t=572
for figuring out the procedure to overclock.

Note: Since the Dell has no temperature, voltage or fan readings, and I'm not even sure if the motherboard will lock PCI/AGP speeds, you have to be careful with your overclock. And since you can't adjust voltage and memory settings, you probably won't get the large overclocks that are possible with enthusiast level motherboards.

Edit in 2004:

One thing you can do to ensure that the CPU is not overheating is to download CPUMSR from:
http://www.cpuheat.wz.cz/html/Download.htm
This utility can monitor the real-time status of the P4/Celeron's throttling mechanism and will indicate if it is exceeding the thermal limit (~72C).


Also, I find that if you shutdown the system for a period of time, it will refuse to boot up when you power-on. Pulling the power plug can and then restarting should enable it to restart without problems.

Edit in 2004: It seems that later BIOS have fixed this problem.

Finally, of course overclocking voids Dell's warranty.


Source:
http://forums.redflagdeals.com/arch...hp/t-50627.html

I tried it and pushed my P4 2.8 to 3.1 Ghz, if you have a locked mobo you should try this trick.