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Pentium 4 650

post #1 of 8
Thread Starter 
What's it like for gaming?
I've been running it for about a month now, overclocking my Graphics, but never touched the CPU, and I seem to have come to a limit to my 3dMark05 scores of around mid 7000s - is it my CPU maxing out? Any ideas to break the 7593 3dMark Barrier?!

Thanks in advance
Kahuna
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post #2 of 8
Quote:
What's it like for gaming?
I've been running it for about a month now, overclocking my Graphics, but never touched the CPU, and I seem to have come to a limit to my 3dMark05 scores of around mid 7000s - is it my CPU maxing out? Any ideas to break the 7593 3dMark Barrier?!

Thanks in advance
Kahuna
Its a good processor however it will be holding back your graphics card in 3DMark 05 and many other later games because it can't keep up with it.

My system is stuck at about 7300 points in 3DMark because my CPU is only running at 3.4GHz. To get a higher score you want to increase the speed of your CPU by a nice amount, getting it to about 4GHz might should get you into the 8000 point mark easily.

As for CPU overclocking here is what you need to do (if you know this just ignore steps 1-7). Read all steps first if you don't!
  • Make sure you are familiar with the CMOS jumper on your motherboard

1. Go into the BIOS and enter your overclocking page (should be under the advanced tab).

2. Once you are in there you will need to lock your PCI-E and PCI clocks at 100.0MHz and 33.3MHz or as close as possible. This will prevent major issues with your system when overclocking it.

3. Next look at the FSB speed, it will say 200MHz, you want to increase that to increase the clock speed of your CPU (note this will also increase memory speeds see step 9 for further info about this issue)

4. Once the FSB speed has been set to a new value (usually increase in steps of 4MHz) you are ready to reboot the system.

5. Keep increasing the FSB speed until the system wil not boot any further, now it is time to reset the CMOS using the jumper on your motherboard, this will clear all settings and reset the BIOS to default.

6. Now you will want to increase the CPU's voltage (vcore). This will allow you to increase the speed of your processor further as it has more power to work with. Do not exceed 1.525v on the vcore or else you may run into advanced issues with the CPU (unlikely but possible).

7. Now you should have a reasonable clock speed that works in windows, but it may not be stable. To check if it is stable download and execute Prime95 (2 copies would be best), this will stress your system. Repeat the above steps until you have a decent speed that is stable.

8. Make sure that during all this that the CPU temperature does not exceed 65C, this is the safety limit of the thermal design, if this limit is breached you may run into issues with your system. The maximum your processor is built to handle (set by Intel) is 67.7C, if you breach that you will have major trouble. The main issue you will get will be to do with something called Thermal Throttling (TM1). TM1 is there to attempt to cool down your CPU if it gets too hot, this works by inserting idle clock cycles into your CPU's work load to try and keep it cool, it works fairly well. Another cooling technology that is there to help keep the system cool is Intel SpeedStep Technology (EIST). What this one does (on your varient of the P4) is to decrease your multiplier from x17 down to x14, decreasing your clock speed from 3.4GHz down to 2.8GHz. This then allows it to decrease the voltage to your CPU and thus keep it cooler. This only activates if you are doing nothing with your CPU, as soon as you start doing heavy work it reverts back to default. TM1 is by far the most annoying of the two because it actually decreases performance quite a large amount when its active.

9. A point about dividers. When you increase the FSB the memory speed increases obviously and this can cause issues if you are going to run your memory over the speed its rated for. This can be fixed by setting dividers, these allow you to decrease the speed of the memory so that it runs slower. Another way around it is to just pump more voltage into the memory to make it run at higher speeds. Your have 533MHz RAM so you should just keep your FSB:RAM ratio in a 1:1 setting, this will allow you to get to 1066MHz FSB (533MHz memory).

You should be good to go then after all this is done, good luck to you. Anymore questions please do not hesitate to ask
post #3 of 8
Thread Starter 
Thanks so much for that, it's informative and... awesome.
I'll follow that to the letter, and let you know of my results.
Thanks a lot.
Kahuna
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post #4 of 8
I get a little over 8000 with my rig, so I'm thinking its your cpu holding you back.

Goodluck with the overclocking
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post #5 of 8
Thread Starter 
Thanks again, but I've had a minor issue:

Quote:
Originally Posted by The_Manual

3. Next look at the FSB speed, it will say 200MHz, you want to increase that to increase the clock speed of your CPU (note this will also increase memory speeds see step 9 for further info about this issue)
I just had a look in the Bios, and under the FSB speed, it had 800MHz. I'm guessing I'm looking at the wrong figure, any ideas?
Edit: Had another look, and it states 800MHz on all the system details in the BIOS


EDIT: After having a look through CPU-Z, I noticed that the FSB is at 200MHz, its the Bus Speed that's at 800MHz. Which just leaves one thing: If it's the Bus Speed on my BIOS, how do I change the FSB?
Thanks again
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post #6 of 8
Quote:
I just had a look in the Bios, and under the FSB speed, it had 800MHz. I'm guessing I'm looking at the wrong figure, any ideas?
Edit: Had another look, and it states 800MHz on all the system details in the BIOS

EDIT: After having a look through CPU-Z, I noticed that the FSB is at 200MHz, its the Bus Speed that's at 800MHz. Which just leaves one thing: If it's the Bus Speed on my BIOS, how do I change the FSB?
Thanks again

Your BIOS is a bit different than most, what it is actually giving you is the full FrontSide bus speed. To work out the FrontSide Bus speeds you multiply the bus by 4 (which in your case is 200 x 4 = 800). So it is actually at 200MHz then
It should allow you to increase the FSB speed (it will be in steps of 4MHz). This will be the same as increasing the bus speeds however you do it in steps of 4MHz as it is quad pumped.

Also do you have a screenshot of your BIOS so I can see your options?
post #7 of 8
Thread Starter 
Cheers man, I'll try that in the morning,
Erm, never taken a screenshot of a BIOS before, ...How would I do that then?
Thanks for the help, as I say I'll try that as soon as possible
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post #8 of 8
Use a camera
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