Requesting OC assistance/Knowledge

[Scavar]

Ok now before anything, I am not a complete moron or anything, I have just never actually OCed anything before, though I understand the general concept.

Now I don't actually know if my current system is safe enough to OC, so here is a list and my current heat levels.



Motherboard: Intel Corporation D945PVS
RAM: Corsair Value Select DDR2-SDRAM PC2-5300 (333 MHz) 2048MB
Processor: Intel(R) Pentium(R) D CPU 2.80GHz (920)
Graphics Card: GeForce 7800 GT(eVGA)

Runs idle at around 38C maxes out at around 52C if during the middle of the day.

Not sure what other info you need, just let me know, and for the hell of it, here is my current CPU-Z


Excuse my poor editing skills, I forgot to fix it properly, didn't think you all would mind.

CPU-Z


Thanks for all and any assistance.

 

[_33]

Which pentium D ?

 

[Scavar]

Oh my bad, I thought I had put it up there. It is the Pentium D 920.

 

[MUff!N]

Well, from what I can see of your Case and Cooling (yea I looked around your Photobucket site) I'd say that you can over clocked the CPU because you're using Heatpipe cooling, and you've got very good Case cooling...
Scav's Computer Case

My question would be is "why" do you want to overclock??? Isn't your cpu & graphics card fast enough as it is??? Or is it that you just want to see just how much faster fast can get!!!

One site that has very good information on this is http://www.extremeoverclocking.com/
and they have a guide as well... CPU Overclocking


Another is here... Overclocking info and guide


The best advice I can give you is do a lot of researching on your peticular setup! Different CPU's overclock differently and some get hotter than others doing it...Once you feel comfortable enough to give it a try, start out in small increments and don't be in a hurry to peg it to the wall...besides you'll need to know how far your cpu will go before you get there.
But from what I've read, your processor Overclocks very well with good cooling...

 

[MUff!N]

Here's a Bunch of detailed information on over clocking your CPU. If you take the time to read this, you'll find out the "your" peticular Processor has a LOCKED multiplier & overclocking is best done increasing the front side bus...which is exactly what I had to do with mine setup to overclock it using CPUFSB. http://www.cpufsb.de/index.html

I also looked at your Motherboard and BIOS. Your BIOS on this board doesn't support changing Voltage, or any of the Clock multipliers...so again you'll have to use a 3rd party sofware program to increase the FSB to get higher clock speeds on your processor. Without being able to increase your core voltage to the CPU you'll only be able to go so high increasing the FSB...As you can see with my system, the best I can really get out of my CPU using this configuration is going from 2.4ghz to 2.66ghz...My CPU will go higher to about 3.0ghz, but being limited to 1.5v pretty much keeps me from going any higher without my CPU becoming unstable and crashing. Once I hit the 600MHz FSB at 1.5v it Hangs. But, even still at a FSB speed of 591Mhz it's a noticeable improvement from 533Mhz & worth doing.

Original Post by XbitLabs

Overclocking the Pentium D 920-930 Series

Low price is not the only attraction of the youngest CPU models. These solutions are usually very popular among overclockers, because they boast the highest frequency gain that can be obtained during overclocking. So, we couldn’t disregard this important matter and paid due attention to overclocking experiments with these CPUs.

The test platform we assembled for our overclocking session was built around ASUS P5WD2-E Premium mainboard. The memory subsystem consisted of two Corsair CM2X1024-6400PRO memory modules. Besides that the platform features NVIDIA GeForce 7800 GTX 512MB graphics card and Western Digital WD740GD HDD. We decided to replace the boxed cooler with the more efficient Zalman CNPS9500 LED.

First of all I would like to make a few general comments about the overclocking of any Pentium D processors on Presler core. Just like their predecessors on the 90nm core, the new Pentium D processors feature a locked clock frequency multiplier. It means that these CPUs should be overclocked by raising the FSB bus frequency. In other words, the overclocker’s system should feature a very high-quality mainboard that will allow significant increase in the FSB frequency without threatening the system stability.

Another important thing that we revealed during our experiments, is the serious dependence of the Pentium D (Presler) overclocking potential on the Vcore. Higher Vcore could only slightly expand the processor’s supported frequency range in case of Intel processors with 90nm cores. However, now that we have moved to 65nm Presler, the situation has become totally different. This core appears very sensitive to Vcore increase. As a result, Pentium D overclocking with the help of specific cooling solutions such as phase cooling or water cooling could be very efficient, because it would allow increasing the processor Vcore quite significantly. For example, the results obtained by the best overclockers out there show that Presler can go as high as 5.5-6GHz on the core.

As for us, we are not going to deal with any high-tech cooling devices. We are just going to see, how far we could go with a mass air-cooler. Of course, the maximum working frequencies of the Presler based processors will be much lower in this case. For instance, when we overclocked a Pentium Extreme Edition on this core, we managed to reach 4.26GHz with the air cooling system installed. To be honest, we expected to see something similar today with our Pentium D 920 and Pentium D 930 processors.

The first one to go was Pentium D 920 CPU. The maximum GSB frequency when the CPU could work stably without raising the Vcore equaled 268MHz. In other words, at the nominal core voltage this processor could work at the frequency slightly higher than the nominal: 3.75GHz. However, as we have already mentioned above, the increase in Preselr’s Vcore pushes its overclocking potential up enormously. So, all our further experiments were conducted with the processor Vcore increased to 1.45V. We could actually raise the Vcore even more in order to obtain more impressive results, however, we couldn’t risk losing the CPU, so we didn’t go any further. Especially, since we did not have any statistics about the safe operation of Pentium D with the greatly increased Vcore.

 

[Scavar]

Thanks a bunch for all the info guys. I will make sure to read through it all and double check before doing anything.


The system itself, despite what 3dmark06 says, runs most everything completely maxed out at 1280x1024, which is the best my monitor does anyways. Somewhere between 40FPS and 150FPS+ depending on the game of course.

So realistically no I don't need to OC, I am just curious about it all really. And though I know DX10 and all is coming out, I won't be able to upgrade for at least another year, so OCing would just be a good thing for me to know for the future.


Again thanks for all the info.

 

[Scavar]

Well you are right about my BIOS being useless. I am mildly confused about something though. My BIOS tells me that I idle at around 50C while every program on earth, says it is around 40C. Not too sure that too make of that.


And as far as Third-Party goes for the OC, that program you linked me to, doesn't have my motherboard on it, so I will have to look around for something else I guess. I might just hold off entirely on the OC, as it seems my motherboard isn't very friendly to it, and my RAM might not like it. Though the CPU would have a field day.

 

[MUff!N]

Yea, the only way of knowing absolutely for sure whether or not you can use CPUFSB is to locate the PLL on your motherboard and see if it's listed as one that works with the program. The PLL chip is what regulates the FSB frequencies.
I did do this and the words on the PLL chip are very tiny.

How to find the PLL.

Once you know for sure what the make and numbers/letters are on this then you'll know for sure whether or not you can change the FSB of the motherboard using this programing.

But yea, over all the best way to overclock a system is to have a "user friendly" mobo that designed with overclocking in mind such as GIGABYTE Motherboards.

 

[cdawall]

this may help http://forums.techpowerup.com/showthread.php?t=13687

 

[Scavar]

Again thanks for the help.


I might be too lazy to find that PLL heh.