OC'ing An Intel 650

[mousiness]

Well after all you guys OC'ing your pc's, ive decided that i wanna oc my IBM for my first OC ever, would it be possible to OC a 650 or even the need to OC it? Would it get hotter or overheat? Any help would be great, the specs for the IBM are as following...

IBM MoBo 915G
Two 40mm fans blowing at a passive heatsink on a Pentium 4 HT 650 Prescott
512mb RAM
160GB Seagate Barracuda 7200.7 HDD
Lite-On 52x CD-RW DVD-ROM drive
225Watt PSU

If this pc is possible to OC id be happy to be taught how to OC :)

BTW: Everything is stock on this pc and nothing has been changed, and would the MoBo be stable enough to oc?

Thanks A LOt

[werty316]

Well some basics to OC'ing an Intel system is to just increase the FSB. Here is a guide I found for Intel systems:

http://www.overclock.net/intel-cpus/1567-intel-overclocking-guide.html (http://www.overclock.net/intel-cpus/1567-intel-overclocking-guide.html)

Basically increase teh FSB 1-2 increments at a time and watch the CPU temps.

[mousiness]

the thing is the temp. monitoring systems arent downloading cuz theres no link to em so i need a proper temperature monitor to see temperatures now, thanks for that page wertty

[werty316]

np, use Speedfan as mentioned in the other thread.

[mousiness]

ok, np

[mousiness]

well my HDD is 48 degrees and it says temp1 is 60 degrees, is that my cpu?

[Kougar]

Mousiness, is this the same machine you posted pics of, the IBM S51??

It is most likely that yes, that would be your CPU temp. Is that the only two temps it shows?

Edit: I will go ahead and say that if this is the S51 in question, then no you should NOT overclock!

There are several reasons, but the biggest is that it has to small a case with not enough airflow to support cooling, especially if there is no fans attached directly onto your CPU's heatsink!! You just can't do this safely with a Prescott without active cooling.

Secondly, if 60c is your CPU temp at Idle, I would already say it was to warm, and under heavy loads it would far to close to the maximum safe operating temperature for anyone here's liking.

If you want to test your computer cooling abilities you can download this program and run it, it's called CPUBurn, and it's about the worst case scenario for a CPU. It will run the best combination of tasks to heat your CPU up as if to similuate a heavy task load, and you can then gauge how well it is being cooled. I would wager your system would climb high enough that your processor would start throttling itself back down to prevent overheating, so once the temps reach 70c you should just exit the program.

If a computer is able to run both CPUBurn and Prime95 in tandem for 30 minutes to an hour without the temperatures getting to 60c, then I'd be pretty sure it was safe to overclock. Even running this sort of load on my processor it will reach a temperature of 50c and cease climbing, until 30 minutes later when the case itself has begun to heat up faster than it can stay cool. CPU Burn (http://pages.sbcglobal.net/redelm/)

Also, the temp of your hard drive is pretty high. I would really suggest you forget about overclocking your system as it's already to hot while not-overclocked, and I assume while at idle as well! If you can improve airflow or increase the speeds of those fans I would suggest doing so. ;)

[werty316]

I think 60c is a bit high for an Intel chip. Are you using stock cooling? I never used CPUBurn but try Prime95 out to see what load temps you get.

http://www.mersenne.org/freesoft.htm

Your load temp is probably gonna hit somewhere between 70-80c or higher depending on the test conditions. You could do some test runs to OC it but I would suggest not to.

[Kougar]

If you think Prime95 will heat your CPU up, cpuBurn will push it even farther than Prime95, although both are best used together on dual core or hyperthreading CPUs.

Regardless, I would not let your system reach 80c. At 75c you can expect any Pentium chip to start throttling, and at 80c it will have completely throttled back to 50% performance. This goes for Northwoods and Prescotts both. In the case of a Prescott though, people can reach up to 101c before the system decides throttling isn't working and it forces a shutdown. The maximum temp for a Prescott is much closer to 80c than 101c, so I don't suggest letting your CPU overheat. Without activing cooling, on a extra hot 650 Prescott core, it will if you attempt to run CPU burn for more than a few minutes ;)

[Coolest-Tech]

Well, that temp is a bit high, I must say, but if you can, you might want to get a cheep case and cooler.

http://www.newegg.com/Product/Product.asp?Item=N82E16811133147

http://www.newegg.com/Product/Product.asp?Item=N82E16835118119

But, mabey it might be a good idea to fry your PC, so your father gets you a new shiny PC! :))

[werty316]

hehe now that is just too sneaky.

"dad I smell burning"...

[mousiness]

Mousiness, is this the same machine you posted pics of, the IBM S51??

It is most likely that yes, that would be your CPU temp. Is that the only two temps it shows?

Edit: I will go ahead and say that if this is the S51 in question, then no you should NOT overclock!

There are several reasons, but the biggest is that it has to small a case with not enough airflow to support cooling, especially if there is no fans attached directly onto your CPU's heatsink!! You just can't do this safely with a Prescott without active cooling.

Secondly, if 60c is your CPU temp at Idle, I would already say it was to warm, and under heavy loads it would far to close to the maximum safe operating temperature for anyone here's liking.

If you want to test your computer cooling abilities you can download this program and run it, it's called CPUBurn, and it's about the worst case scenario for a CPU. It will run the best combination of tasks to heat your CPU up as if to similuate a heavy task load, and you can then gauge how well it is being cooled. I would wager your system would climb high enough that your processor would start throttling itself back down to prevent overheating, so once the temps reach 70c you should just exit the program.

If a computer is able to run both CPUBurn and Prime95 in tandem for 30 minutes to an hour without the temperatures getting to 60c, then I'd be pretty sure it was safe to overclock. Even running this sort of load on my processor it will reach a temperature of 50c and cease climbing, until 30 minutes later when the case itself has begun to heat up faster than it can stay cool. CPU Burn (http://pages.sbcglobal.net/redelm/)

Also, the temp of your hard drive is pretty high. I would really suggest you forget about overclocking your system as it's already to hot while not-overclocked, and I assume while at idle as well! If you can improve airflow or increase the speeds of those fans I would suggest doing so. ;)

yes it is the s51, and im wanting to oc it because it isnt my primary pc and ive never OC'd before,, and yeah i knew that the small case would block airflow and 60c stunned me at idle, it isnt worth risking a 1400dollar pc over ocing, maybe ill try it when i get a new pc or try to oc an existing celeron with active cooling.

[mousiness]

Well here are the pics of cooling

http://img142.imagevenue.com/img.php?loc=loc112&image=79670_IBMCooling_001.jpg
http://img121.imagevenue.com/img.php?loc=loc275&image=79676_IBMCooling_002.jpg
http://img23.imagevenue.com/img.php?loc=loc118&image=79708_IBMCooling_003.jpg

and nviddia guy the reason i cant buy a new case is because there is a riser card on my current MoBo and it would work with that case

sorry but the thumbnails didnt work

and if its possible is there any good quality coolers that would fit in this case?

[werty316]

Nice good collection of dust. It must improve the performance :p

np on not getting the thumbnails working; I'll fix em for ya ;):

http://img142.imagevenue.com/loc112/th_79670_IBMCooling_001.jpg (http://img142.imagevenue.com/img.php?loc=loc112&image=79670_IBMCooling_001.jpg) http://img121.imagevenue.com/loc275/th_79676_IBMCooling_002.jpg (http://img121.imagevenue.com/img.php?loc=loc275&image=79676_IBMCooling_002.jpg) http://img23.imagevenue.com/loc118/th_79708_IBMCooling_003.jpg (http://img23.imagevenue.com/img.php?loc=loc118&image=79708_IBMCooling_003.jpg)

[mousiness]

this machine hasnt been cleaned since i bought it in october lol, ive cleaned it now but its still about the same temps, any suggestions on coolers that would fit?

and remember, the two fans that you that are up are in service position, they are usually blowing right at the cpu heatsink, maybe if i bought an active cooler it would be very cool literally

werty thanks for the fixes :)

IBM has clearned the machine pretty well from cables...

[werty316]

Hard to say what cooler might fit. It looks like a server cooler might fit. Oh so you have those 2 fans blowing on the CPU heatsink, can you take that metal bracket off the top of the heatsink? What socket type is that system?

[mousiness]

well that bracket is a wind muzzle it is removable, and its a socket 775

[werty316]

I guess height might be an issue for a cooler but here are some I found:

http://www.thermaltakeusa.com/product/Cooler/CPUCoolers/Intel/BTX/BTX_index.asp

With this one you could jsut add a fan:
http://www.thermaltakeusa.com/2005/coolers/itbu/cl-p0172/cl-p0172.htm

Here are others:
http://www.coolermaster.com/index.php?LT=english&Language_s=2&url_place=product&p_serial=RR-LCH-P9E1&other_title=RR-LCH-P9E1Hyper%20L3
http://www.svc.com/rr-lhc-p9-e1.html

http://www.coolermaster.com/index.php?LT=english&Language_s=2&url_place=product&p_serial=KHC-L91-U2&other_title=KHC-L91-U2Hyper%2048

[mousiness]

maybe, im not sure of the dimensions but ill contact IBM and see what they say, maybe ill go to the local pc shack and see what they have to say.

[Kougar]

I'm not sure if you want to go spending $50 just to OC that PC a little, but if you have the money for it...

The 2nd and 3rd links Werty sent actually look good, especially the copper unit. But you would need to insure you can mount them in place of the current heatsink.

Two more options, assuming they can be mounted to your system.
http://www.newegg.com/Product/Product.asp?Item=N82E16835114036 (http://www.newegg.com/Product/Product.asp?Item=N82E16835114036)

http://www.newegg.com/Product/Product.asp?Item=N82E16835108062 (http://www.newegg.com/Product/Product.asp?Item=N82E16835108062)

[mousiness]

those are the exact same two heatsinks/fans that i was looking at and considering... this is creepy lol, they will probably fir into my pc, ill give em a shot.

[Kougar]

Just make sure they will attach to your CPU socket or motherboard before you do. I highly doubt there is the usual LGA775 retention clip under that massive aluminum block cooler.

[mousiness]

im looking in the website for videos of the older sockey 478 models aand they appear to be regular retention clips you would find in any normal pc, but ofcourse that is an older model and ill have to look into the pc later to see what the clip really looks like...

[werty316]

lol you must be psychic mousiness.

[Kougar]

If your system is a 650 Prescott it will use the LGA775 socket, which is a big difference from the 478socket, which my system uses.

It also looks like the current heatsink configuration is designed to cool the PWM/mosfets as well, so you would need to ensure those still get enough cooling if you remove that aluminum block cooler. ;)

[mousiness]

yeahit IS designed to cool the mosfets to!!! I didnt realise that until i looked into the pc after you had mentioned it, seems like IBm is doing a very good job in TRYING to keep things cool, ive never seen pre-built pc's that are below $1500 that have mosfet cooling before.

[mousiness]

lol you must be psychic mousiness.

maybe werty jus maybee... hmm...