7800GT

AMDX23800+ · 11 Jul 2006 at 21:55

Hi,
What's the highest stable speed anyone has overclocked a stock 7800GT to?
My graphics seem to mess up if i try anything over 479/1.1
Thanks

Xez · 11 Jul 2006 at 21:57

Thats pretty bad

on stock cooling etc i got upto 476mhz with 50mhz delta on the core and 1.22 on the memory

AMDX23800+ · 11 Jul 2006 at 22:09

I have the Gigabyte one.
When i click 'detect optimal frequencies' it puts the card to like 490/1.23 but then when i play a graphics intense game, the graphics go fuzzy and the comp crashes

AMDX23800+ · 13 Jul 2006 at 23:15

What do you mean by '50Mhz delta on the core' ?
Thanks

Raikiri · 13 Jul 2006 at 23:33

Mine runs fine at 490/1200 and maxes out at 497/1240 (on stock) I have since changed the cooling though for something quieter

bbreezeuk · 14 Jul 2006 at 00:05

AMDX23800+ said:
I have the Gigabyte one.

i had the xfx extreme one and it wouldnt go past those clocks so i soon sold that on and now have a 7900 that does 600/1700 easy without even trying

i think they use rubbish components on the cheap ones whoch limits the overclocks

Xez · 14 Jul 2006 at 10:01

AMDX23800+ said:
What do you mean by '50Mhz delta on the core' ?
Thanks

50mhz delta is when the card goes into 3d mode and adds 50mhz more to the core. I think most 7800's had 40mhz delta on them. If you use rivatuner to look at your clocks then open up a game it should change its clock speed.

booyaka · 14 Jul 2006 at 10:43

my old point of view one was rock solid stable @ 485/1180

H3x0rc!st · 14 Jul 2006 at 11:07

100% stable @ 494mhz - core, and 1.22ghz - memory. thats on an XFX 7800GT with stock cooler, i reccomend taking the heatsink off and cleaning the chip and replacing the thermal compound on it with arctic silver as my temps were far lower by doing this.

AMDX23800+ · 14 Jul 2006 at 18:48

My temps aren't really very high , the max around 65C.
It seems to be the memory, much above 1.1ghz , the graphics go fuzzy and the comp crashes :confused:

thanks for the help