saphire 4850 - why can't get more than 660 core :( ?

[asd1301]

i see ppl with my card :
http://www.newegg.com/Product/Produc...82E16814102747
get to 700+ EASY !....
when i get over 660 core my screen goes off in heavy games ....
am i doing something wrong ? if i rais 10 on the core should i raise also 10 in the memory or something ? maby the core and the memory not synchronized ? that's why i can't go to 700 core ?
temp ok i guess ...75 in games on 40% fan by profile ....

http://img366.imageshack.us/img366/7...sssssssti2.jpg

 

[RamonGTP]

You're not doing anything wrong. My sapphire 4850 doesn't OC wroth crap either.

 

[cyclone3d]

What is the temp difference in your case compared to the temp in the room?

75c is horrid. I would never try to overclock something that was running that hot at load. 60-62c is the most I like to see when something is overclocked.

I bet you can lower that temp by a good 5-10c or more just be removing the side off of the computer case... the 4850, blows all the hot air back into the case... makes everything run hotter.

 

[lowteckh]

4800 series have the bios set to run at low fan speeds. So many people are unaware of this and freak out when they read about the temps.