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Overclocking my C2Q Q8300

post #1 of 6
Thread Starter 
Hello everyone biggrin.gif

First of all i have to admit that im not a experienced overclocker so please bear with me.

my pc:
CPU - Q8300
Ram - Kingston KHX8500D2K2/4G CL5
MoBo - Asus P5Q PRO Turbo
Cooling - Corsair H50 , Hyper X fan (for my ram) , a few fans inside the case
Geforce 470 Gtx

basically i wanna learn how to overclock smile.gif
so my first question , is my hardware "ok" for softcore ocing ?

im not really sure where to start so i kinda hoped you guys could help me out alittle smile.gif
post #2 of 6
http://www.overclock.net/intel-cpus/497993-newbie-guide-overclocking-updated-core-2-a.html
post #3 of 6
Nice to see a new overclocker!

I'll answer your questions first: Yes you can overclock on that rig, and you've got plenty of cooling power. Oh, and just so we can see what your rig has, go to User Control Panel and click "Add a new rig" and fill out the form to make all your posts contain your PC specs.

So, first thing you'll want to do is download CPU-Z and Prime95 (If you've got a 64-Bit OS, get the 64-bit version). You'll also need RealTemp to check temperatures.

Next, go to your BIOS (Mash Delete while your PC is booting) and disable Spread Spectrum (I don't know your board's BIOS so you'll have to find these settings yourself), then head over to your CPU settings and look at the options: FSB frequency, Multiplier, VCore, etc... You'll want to raise the FSB speed to 350MHz, then save the settings and boot into windows.

Once inside windows, start CPU-Z and Realtemp. If you look at the CPU tab on CPU-Z, you'll see that the processor speed has increased to 2625MHz, up from 2500. Now open Prime95 and Realtemp, and run Prime95 in "Large FFT's" for 10 cycles, or until it crashes (More on this later). Be sure to check RealTemp to see how high the temperatures go. For your CPU, You don't want to go over 65c on full load (Running Prime95).

You just overclocked your CPU! Now let's see if it can go further.

Head back into your BIOS and raise the FSB by 20MHz, then save and repeat what we did above, checking for stability and temperatures.

If Prime95 crashes, you have 2 choices: lower the FSB bit by bit until it's stable, or raise the VCore by a notch or two. Raising the VCore sends more voltage through your CPU, increasing stability as well as heat.

If temperatures go over 65c for a long time (Not just for a few seconds at a time), then you can either lower the overclock like before, or get better cooling. This is up to you.

Keep doing this until you can't add any more FSB, and once you've gone as high as you can, it's time for the big test. You'll want to leave Prime95 Running for at least 12 hours, preferably a day, and see if it's stable. If not, try the remedies discussed above.

If it's stable, then you are now the proud owner of an overclocked PC!

-Good luck, and have fun!


EDIT: Wow I type slow. I got ninja's by 22 minutes redface.gif.
     
CPUGraphicsRAMHard Drive
Intel Core i7-2720QM Intel HD 3000 8GB DDR3-1333 Samsung 850 EVO 120GB 
OSMonitor
Arch Linux w/ OpenBox B156HW01 V.4 FHD Panel 
CPUMotherboardGraphicsRAM
Xeon L5639 @ 3.24-3.60GHz Asus P6X58D Premium Gigabyte HD7950 Windforce3 6x2GB G.Skill Pi 1600MHz CL7-8-7 @ 1440MHz 
Hard DriveOSMonitorKeyboard
Crucial M4 64GB + Samsung 1TB 2.5" Windows 7 x64 2x Dell U2311H Rosewill RK-9000 
PowerCase
Seasonic SS-850HT Lian Li PC-9F 
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CPUGraphicsRAMHard Drive
Intel Core i7-2720QM Intel HD 3000 8GB DDR3-1333 Samsung 850 EVO 120GB 
OSMonitor
Arch Linux w/ OpenBox B156HW01 V.4 FHD Panel 
CPUMotherboardGraphicsRAM
Xeon L5639 @ 3.24-3.60GHz Asus P6X58D Premium Gigabyte HD7950 Windforce3 6x2GB G.Skill Pi 1600MHz CL7-8-7 @ 1440MHz 
Hard DriveOSMonitorKeyboard
Crucial M4 64GB + Samsung 1TB 2.5" Windows 7 x64 2x Dell U2311H Rosewill RK-9000 
PowerCase
Seasonic SS-850HT Lian Li PC-9F 
  hide details  
Reply
post #4 of 6
I noticed that you said software overclock. From my personal experience you're better off following zouk's advice (via BIOS overclocking). Software overclocking rarely works out well, and has only resulted in freezing for me. Some people have been able to software overclock without issue though. That P5Q PRO is a P45 board if I'm not mistaken, so if there's any limits to your ability to overclock it'll rest on your processor. Good luck!
post #5 of 6
Thread Starter 
Thanks for really useful answers smile.gif after reading a few guides and your replys i feel that i understand the basic of cpu ocing , but there is still a few things im abit confused about.
its FSB:DRAM ratio , RAM timings and alot of different voltages like North bridge and such.
should i set them to something or leave them on auto and focus on FSB/cpu multiplier/vcore?
post #6 of 6
I also have the p5q pro turbo and am running the q8300 with 6 gb OCZ ddr2 800. I am replacing it with a q9550 and 8 gb ddr2 1066. I dont want to do any extreme overclocking. I don't want to put too much risk on my machine, but I do think that the ai teak feature of my Bios offers some safe performance boosters that I am ignorant to. I have so many questions this could go on for miles. I have read about changing the memory timing & V to stock settings 1st (2.1v & 4-4-4-15) and setting the FSB:Ram ratio to 1:1. I also am wondering about the FSB frequency. If i am running ddr2 800, can i set it to 400? PCIe has a frequency setting too, as does DRAM. Those are really OC related, but there are also some other things such as;
Ai Clock Twister
Ai Transaction Booster
Load-Line calibration
cpu spread spectrum

The 1st 3 have a basic description and sound very beneficial, but I do not want to do something blindly! Help!
Edited by WeRNothiNg - 12/28/12 at 6:13pm
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