Can't overclock past

when i go over core clock 699 memory bus 993 mhz the game crashes. I was playing crysis it did this. i am using crysis because it is demanding. i am not a computer whiz. i have seen people pass this by quite a bit more on stock cooling.Can't overclock past
What video card are you overlocking? And if it's crashing, that's a sign that you can't go any further and that you probably need to tone it back a bit as well.Not everyone's card is made alike, you may have just gotten a dud for O/Cing.Can't overclock past
[QUOTE=''hotmustard'']when i go over core clock 699 memory bus 993 mhz the game crashes. I was playing crysis it did this. i am using crysis because it is demanding. i am not a computer whiz. i have seen people pass this by quite a bit more on stock cooling.[/QUOTE] that means you are in a unsafe mhz range and could kill your video card
sorry forgot to post its a 8800gt and i have a cooler master extreme 550 watt power supply
[QUOTE=''hotmustard'']sorry forgot to post its a 8800gt and i have a cooler master extreme 550 watt power supply[/QUOTE] Try stepping up your cooling method. Air cooling won't get you far.That memory timing you listed is absurd for OC'ing that card. It's 750 stock isn't it?
Think 700/1000 is a pretty average oc for those cards, mine got to it before I had to return it after the fan stopped working. You have to up the fan speed though, the default of 30% isn't even enough for stock clocks, set it to 70%+ when you oc, then test it with ATI tool, easiest way.
the default clock speed is 600 mhz and i have an antec 900 case with an added 120mm fan. The gpu temperature on the card is only about 50 degrees before it shuts off.
the 8800gt has such a slim heatsync if you wanted to oc'd should have went with a gtx or ultra. Though a 65nm chip they weren't really built for oc'ing.

concealer