I am a noob at overclocking, all I have overclocked was my old q6600 to 3GHZ.
CPU - Q9550
Cooler - Zalman CNPS 9900 LED
GPU - XFX 4870 XXX
Motherboard - Biostar T-Power I45
PSU - Corsair HX650 modular power supply
RAM - 2x2 GB OCZ 1066mhz Blade series
My CPU runs at 31C under load and my GPU runs at 50C
I can't reach past 3.1ghz without my computer crashing after some time. I am not sure what I am doing wrong.
Please help if yo can.
Keep your core temps under 70 C. and core voltage under about 1.4 volts.
Keep in mind that these are guides, not cookbooks. YMMV. Your Mileage
May Vary. Because of all the variables, you may not do as well as
someone else with a similar system. Or you might do better.
Overclocking since 1978 - Z80 (TRS-80) from 1.77 MHz to 2.01 MHz
Oops. I have a "standard" cut 'n paste reply that I then edit as needed. I just forgot to take the HSF section out.
The Zalman 9900 is a pretty good HSF but there are things that work better for less. OTOH, the Zalman is good enough that it's not worth replacing.
I suspect that you are overclocking your RAM and that is limiting your CPU overclock.
If your memory clock multiplier (or whatever Biostar calls it) is set on AUTO, change it to 2.00. You want the mem clock to be twice as much as the FSB. If it is on AUTO (the usual setting), the mem clock will be increased the same percentage that the FSB is.
yes your cooler is good enough.. i've overclocked 130w proccessors with that, and yours is only a 95w.
you shouldn't be having issues getting past 3.1 with a q9550 though... it could probably do that with stock voltages. i'd check if your ram is getting cranked up too high as you boost your fsb.
i have a q9400 which is your processor with half the cache cut out and a multiplier of 8 instead of 8.5. it's humming allong at 3.2 with a very minor voltage increase. it's in an htpc with minimal airflow so i changed the ratio for the ram so it was below spec and undervolted it. you could do something similar without screwing with the voltages and rule your ram out.
My problem is solved. I am such an idiot, I kept my ram frequency too high. I now overclocked my CPU to 3.8GHZ. I took the Prime 95 stress test and I got no problems.
Thanks to every one for their help.