Hi all, A long time ago in a galaxy far away.............. *euhrr -> edit* A long time ago I've posted here about overclocking my new 6800gt ( It was just in the shops when I bought it, so do the math and you'll figure out around what time that was) I asked everywhere for support when it seemed my card; an XFX brand 6800gt wouldn't let me overclock it, not even a single MHz! Even ItallionStallion who posted the "nVidia Graphics Card Overclocking (tut with pics)" topic couldn't help me any further. At that moment I left in shame thinking my card had bad memory chips which didn't allow me to oc it at all, never....... This week I thought; "What the hell I'll flash my 6800gt and see what happends, if it fries it's fried and I'll buy something else" after reading about flashing a 6800GT to a 6800Ultra in another forum. I decided to edit my gpu bios with a program called NiBiTor, I made a backup of my old bios with NvFlash, and started on forcing it to higher clock speeds When I loaded up the extracted bios my default clock speeds came up as 350 core / 1000 memory. (I bought a Zalman VF700-CU before I tried to oc the 1st time) I messed around with other bios's and actually flashed my card to a 6800Ultra making Windows XP recognize it as a 6800Ultra too. It seemed ok, but after playing Battlefield 2 for a while my whole screen turned static and I had to hard reboot my computer and load the default bios again. Knowing the clock speeds of an 6800Ultra now, I loaded up a copy of my original backup and changed the speed of core and memory to those, I left the voltage to 1.3 since only real 6800Ultra's run at that voltage. And after rebooting my 6800GT was clocked at Ultra speeds! I've been playing for more than a couple of hours and didn't notice any artifacts or extremly high temperatures (67 degrees celsius max stressed; my Zalman VF700-CU running on normal mode instead of silent) Can I say I succesfully overclocked my 6800GT now? Or can I expect strange things to happen in the near future. It's only been the 1st day I've playtested it. There is no difference in doing it this way than flahing my card to a 6800Ultra with the same speeds right? Expert thoughts and advice on this?