-
Competitor rules
Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.
How to overclock a 7850 past 1050MHz?
- Thread starter 555BUK
- Start date
![[Damien]](/styles/overclockers/avatars/4.png){kind=avatar}
Yup. Makes no difference. It's a shame but 1050/5600 is still better than stock and does the job better than my old GTX 460 did.
Soldato
- Joined
- 15 Nov 2008
- Posts
- 2,535
- Location
- Reading
HIS going by his sig.
Thanks, my bad for not reading properly
Worried now because I've got an HIS 7850 waiting for me that was delivered today/ :S
It's pot luck. I have a HIS 7850 and it runs fine at 1200/5600 @ 1.176v 24/7 with an ASIC quality of 86.3% so it all depends on the luck of the draw I suppose.
Associate
- Joined
- 10 May 2012
- Posts
- 44
just another update on my card, again many thanks to everyone for the contributions, you guys are awesome!
MSI TFII, stock volt = 1.138, ASIC = 73.9%
OC = 1200core, 1375mem, 1.16v, never goes above 62 degrees. Very stable and bf3 runs well.
MSI TFII, stock volt = 1.138, ASIC = 73.9%
OC = 1200core, 1375mem, 1.16v, never goes above 62 degrees. Very stable and bf3 runs well.
Looks like a decent card. It shows ASIC doesn't seem to mean much. Mines 84% and I need 1.185v to run 1200core.
For those having problems overclocking when upping the voltage, just make sure (using GPU-Z) that the voltage is actually increasing.
I struggled like hell to get anything over 1100 on the core, when I checked GPU-Z no tool (other than Trixx) was actually raising the voltage. Asus GPU tweak for example, didn't matter what I set it to, the default volts continued.
Card still isn't a great clocker mind. Settled for 1175/5800 @ 1.25v. 1200/5800 @ 1.25v is possible but it only added 8 points to Heaven, so not worth the heat/noise.
I struggled like hell to get anything over 1100 on the core, when I checked GPU-Z no tool (other than Trixx) was actually raising the voltage. Asus GPU tweak for example, didn't matter what I set it to, the default volts continued.
Card still isn't a great clocker mind. Settled for 1175/5800 @ 1.25v. 1200/5800 @ 1.25v is possible but it only added 8 points to Heaven, so not worth the heat/noise.
In relation to my previous post about my high temp HIS 7850, idling around 45c with 1200/5200 1.165v and about 80c under load. It appears it isn't just the 'poor' cooler as some mentioned, it seems that as I use dual output, DVI to monitor and HDMI to HDTV as soon as I turn off one display the idle temp drops to around 33c. Didn't realise that dual output would boost the card temperature so much!
Is there much more performance to be gained from upping the memory any more?
Is there much more performance to be gained from upping the memory any more?
I had a similar experience with GPU-Z not showing voltage increases, but in my case the voltages are definitely going up. I tested this by raising voltage in afterburner without overclocking and checking temperatures. GPU-Z shows 1210 no matter what I set in afterburner, but the voltages clearly go up because the temps increase.
I just about have my MSI TFIV stable at 1200/1350 but it takes 1.25V to get there. Not that impressed with the card, but even less impressed with the POS drivers I now have to put up with. Seriously thinking of going back to NVIDIA, and I've had it less than a week. Still, that's another topic I guess!
It's a strange one with these cards, different software doing different things.
In my case, the voltage definitely wasn't going up as GPU-Z reported an increase using Trixx, but didn't report an increase with the Asus tool.
As for the drivers, welcome to AMD
Not really. 7850's are GPU limited so overclocking the VRAM from 4800 to 6000MHz (25% OC) only boosts performance by 5-6%. A few hundred MHz in either direction will be largely unnoticeable within games. The GPU on the other hand provides almost linear gains.
Just trying out my HIS 7850 now, ASIC 88.6% and it won't bench at 1050/1450 @stock voltage
Asus tweak won't allow >1050 either, trying trixx
I just did a quick test of this in Heaven, and memory OC is linear for me as well up to 1350, at which point it starts to drop back. But you're right that the percentage gains are smaller compared to GPU OC. Here's what I get (1080p, 4xAA, 4xAF, tesselation normal):
1200/1200: 55.5 (1399)
1200/1300: 56.9 (1434)
1200/1350: 57.7 (1453)
1200/1400: 57.5 (1448)
