x850 OC job

[Randum]

Ok heres something I was wanting to ask, maybe someone knows. I am familar with CPU OCing, and have no problem producing, however with my x850 i was able to do this

Mem Speed:621mhz
Core: 594mhz

This is via ATI's overdrive test....now when I run 3dmark, i get exactly 1000 (yes ONE THOUSAND) LESS with these speeds....what aspect of OCing drops the performance when the speeds are increased? Just wondering...

 

[bjc112]

If you go too high, or on the edge of stability, you lose performance sometimes..

Back it down..

Run ATI tool, that is pretty solid at getting a good OC.

 

[Munky]

Also, download and run rthdribl, it's very sensitive to errors and will show artifacts when you OC too much, even before AtiTool will detect any.

 

[BW86]

Originally posted by: munky
Also, download and run rthdribl, it's very sensitive to errors and will show artifacts when you OC too much, even before AtiTool will detect any.

here is a link for rthdribl

 

[Hacp]

would a 600/1400 850XT beat the 7800GT?

 

[Randum]

thanks guys, is this tool just for monitoring then? So I OC with the ATI Overdrive manually and then detect with this other program?
Thanks!

 

[Elfear]

Originally posted by: Hacp
would a 600/1400 850XT beat the 7800GT?

Well, my X850XT PE at 640/610(1220) scored 7500 in 3DMark05 so a X850 clocked at 600/700 should be able to beat a 7800GT which generally score ~6800-7000.


Disclaimer: A slew of real-world benchmarks would be ideal but 3DMark05 will give a fairly accurate picture of how a graphics card will perform.

Oh, and nice job OP. If you can get your card stable at that speed than that is very good. I could only get mine stable at 600/600 on air.

 

[Randum]

7500?? i only hit 6000....d"oh i assume its my cpu

 

[ddogg]

Originally posted by: Elfear

Originally posted by: Hacp
would a 600/1400 850XT beat the 7800GT?

Well, my X850XT PE at 640/610(1220) scored 7500 in 3DMark05 so a X850 clocked at 600/700 should be able to beat a 7800GT which generally score ~6800-7000.


Disclaimer: A slew of real-world benchmarks would be ideal but 3DMark05 will give a fairly accurate picture of how a graphics card will perform.

Oh, and nice job OP. If you can get your card stable at that speed than that is very good. I could only get mine stable at 600/600 on air.

7500??? damm my old OCed 850XTPE at 610/600 would reach about 6600-6700 on a 4000+. how the heck did u reach 7.5k?
even at those speeds i still doubt it would be able to beat a GT especially at ultra high resolutions above 16x12 where the GT shines.

 

[Randum]

what coolers are you guys using so you can run at those clock speeds, mine runs at high speeds, but i assume it just overheats like an animal