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AMD Radeon HD 6850 OverClocked to 1 Ghz !!!

topgear

Super Moderator
Staff member
HD6850 Pushed to 1 Ghz !!!! - Link

The first OC

Testbed :

AMD Athlon II X4 @ 3.5 Ghz + CM Hyper 212
Transcend DDr2 2x 2GB @ 833 Mhz
HD6850 GPU
GA-MA78GM-US2H motherboard
Corsair GS600 PSU + CM Elite 430
Windows 7 - 64 bit SP1
Sapphire TriXX OC Utility V4.0.2
AMD Catalyst 11.10

Default Clocks (820/1100 MHz @ 1.149 V)

msi_r6850-pm2d1gd5_complete.jpg


from tom's hardware

Performance :

6h14q9.jpg


o6gzz6.jpg


Overclocked (975/1125 MHz @ 1.218 V)

35bw9ra.png


npi6md.jpg


Performance :

2gvvt6t.jpg


qo8w8l.jpg


Game Benchmarks - Link
 

Skud

Super Moderator
Staff member
I would have loved to see how far it can go without voltage modifications.
 

Skud

Super Moderator
Staff member
Official for Sapphire cards only. ;) Officialy it supports two 5000 series cards only, 5850 Extreme & 5830 Extreme. But I think it can be used with other cards too.
 
OP
topgear

topgear

Super Moderator
Staff member
HD6850 Pushed to 1Ghz !!!!!!!!

Testbed :

AMD Athlon II X4 @ 3.6 Ghz + CM Hyper 212
Transcend DDr2 2x 2GB @ 860 Mhz
HD6850 GPU ( pic on the first post )
GA-MA78GM-US2H motherboard
Corsair GS600 PSU + CM Elite 430
Windows 7 - 64 bit SP1
Sapphire TriXX OC Utility V4.0.2
AMD Catalyst 11.10

GPU Core Speed : 1000 Mhz
Memory Speed : 1150 Mhz ( 4600 Mhz effective )

Vcore : 1.266

351wkdl.jpg


Details :

Initially I pumped 1.250v to reach 1 Ghz - I was able to finish 3DMak Vantage, 3DMark11, Uniengine Heaven ( all maxed out ) ,Metro 2033 ( all maxed out ), benchmarks but all of those were symthetic benches - when it comes to real world I played L4D2, CoD Black Ops and these two were stable but BFBC2 and BFBC2 was not stable - so I pumped 1.258v - even after that BFBC2 and BFBC3 was not stable - when I set the core volt to 1.266 - BFBC2 , Crysis 2 ( with DX11 and High Res pack ), BFBC3 @ all maxed out ( tested 1 hour each ) including every other games ran just fine.

For the memory I have set it to 1200 Mhz and 1175 Mhz but they were not stable - found out that 1150 Mhz to be stable enough.

apfxpf.jpg


Now some real world temp measurements - benchmark apps just can't push the gp usage to 100% so the temp they are showing can't represent real time gaming very well - so measured temps with with BCBC 2 and 3 which can push the cpu and gpu to their maximum limit ;-)

Temp readings :

BFBC2 @ 975/1125 MHz (1.218 V)

8vydfd.jpg


BFBC2 @ 1000/1150 MHz (1.266 V)

2mxfrz9.jpg


BFBC3 @ @ 1000/1150 MHz (1.266 V)

dq6g7t.jpg


Reaching 1Ghz was my goal when I first stared OCing the gpu and now it's time to find out how much I can push the gpu core with stock volt for normal usage ;-)
 

Skud

Super Moderator
Staff member
Temps are cool too. :shock:

Great results topgear. Can you post a screenshot of the Fan Control tab of TRIXX?
 

mithun_mrg

Cyborg Agent
One thing i did't understand the difference in readings of GPUZ is that due to the version

awesome overclock topgear
 
OP
topgear

topgear

Super Moderator
Staff member
@ all - thanks guys for the comments.

The gpu is cooled down by the stock cooler and the Hyper 212 is taking care of the cpu ;-)

Here's the pic of fan control tab ;-)

2r4icnl.png
 
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