How to overclock a 7850 past 1050MHz?

Jarrod · 30 May 2012 at 01:35

Is flashing the BIOS to unlock 1.3v safe then? I've got two Powercolor 7850s in crossfire... wondering if I can OC to 1300 core.

gurusan · 30 May 2012 at 01:50

Ok so I found the advanced button but still don't see any way of tweaking GPU voltage. Also tried Sapphire Trixx.

shush007 · 30 May 2012 at 09:37

So I know there is a heap of info on the various 7850's on this thread but is there any general consensus on which brand 7850 is best for over clocking? I know it will depend a lot on the individual gpu but is there any brand that has better cooling or anything that will give the best chances of higher stable clock speeds?

I've got my eye on the sapphire, msi (twin frozr 3) and the power color 7850, but am open to other brands..

Thanks in advance

RevBillyG · 30 May 2012 at 10:32

My Sapphire's a beast. Running at 1230/5200 24/7 never goes over 61c even with the current high ambient temperatures here.

Heaven @1920 is in the 1500s.

Nickjf20 · 30 May 2012 at 10:54

Just ordered an HIS 7850 for 160£

If it's a promising overclocker, I'll order a Accelero 2 and hope to hit 1300

wazza300 · 30 May 2012 at 11:08

msi twin frozr 3,can max ccc easily,havnt pushed further yet

wazza300 · 30 May 2012 at 11:10

gurusan said:
Ok so I found the advanced button but still don't see any way of tweaking GPU voltage. Also tried Sapphire Trixx.

there will be an empty box,tick it to allow voltage adjustment

redeye_uk · 30 May 2012 at 11:16

shush007 said:
So I know there is a heap of info on the various 7850's on this thread but is there any general consensus on which brand 7850 is best for over clocking? I know it will depend a lot on the individual gpu but is there any brand that has better cooling or anything that will give the best chances of higher stable clock speeds?

I've got my eye on the sapphire, msi (twin frozr 3) and the power color 7850, but am open to other brands..

Thanks in advance

They pretty much all max out CCC, but to get an uber clocker is just luck of the draw. Go with what's cheapest at the time and offers a good warranty.

Twirlywoos · 30 May 2012 at 12:06

I've seen the HIS 7850 for an excellent price on a competitor's site. It's £10 more than the price I stated would make me take the plunge to crossfire.

.:SAmSuNG:. · 30 May 2012 at 13:07

What's the best to set the "power control" setting to? This is the first card I've had with this option.

deepbroca · 30 May 2012 at 13:56

redeye_uk said:
Well the card arrived and GPUZ is reporting an ASIC value of 86.7

Wow...looks like you got lucky!!

tuffluck · 30 May 2012 at 15:22

tuffluck said:
just tried TRIXX tonight over ASUS utility. i really like it, except the VDDC stays constant even when the card downclocks itself. with ASUS, VDDC would drop to .8v or so when there was little load. is there a setting in TRIXX to get the same result? i would think it be a bad thing to have VDDC at it's max all the time, especially if the max is more than stock for most of us.

anyone?

Nickjf20 · 30 May 2012 at 16:14

tuffluck said:
anyone?

You're probably better off just using the ASUS tool

Any reason why you want/have to use trixx ?

gurusan · 30 May 2012 at 16:54

wazza300 said:
there will be an empty box,tick it to allow voltage adjustment

there is no empty box....I think I'm screwed until there is a BIOS editing tool released.

My ASIC quality is 84.8% btw, stock vgpu is 1.037V which caps me out at 1070MHz. Fail

MORE SPEED · 30 May 2012 at 17:35

gurusan said:
there is no empty box....I think I'm screwed until there is a BIOS editing tool released.

My ASIC quality is 84.8% btw, stock vgpu is 1.037V which caps me out at 1070MHz. Fail

That is still a very decent overclock. Did you follow the steps listed in this post? Note the white hexagon in the bottom left of the window as well.

http://forums.overclockers.co.uk/showpost.php?p=21623164&postcount=11

Balb0wa · 30 May 2012 at 17:40

Also have you come from a nvidia card? done driver sweep etc?

gurusan · 30 May 2012 at 17:54

I came from a 5850...just uninstalled old drivers and installed 12.4 along with the new card. I'm at work right now, will try messing around with it more when I get home.

Arron17 · 30 May 2012 at 19:21

I am considering getting a second 7850 because of the prices at the moment, but my motherboard only supports 16x/4x for crossfire, but it is a pci-e 3 board, so would this still ruin the performance of crossfire?

.:SAmSuNG:. · 30 May 2012 at 20:27

So far my results for my msi tf3

Stock voltage is 1.138v and ASIC is 80%.

Currently at 1175 core and 5800mhz mem 1.145v.

Ran through heaven bench fine at that and just been gaming for a hour which was fine also. Temps hit 70c but my case has very little airflow and room is quite warm.

Gotta say the card is great. Runs so quiet and cool.

Balb0wa · 30 May 2012 at 20:47

well my msi Twin Frozr IV is at 1250 core and 5520 memory, 1.254 volts and temps of 65 auto fan profile, in dirt 3 in a hot room, not bad at all.

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