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How to overclock a 7850 past 1050MHz?

djphilos said:
DOH, come again and rewind :)

Ok, so here we are

GPU Clock 1200
MEM Clock 5800
GPU Voltage 1.176


Powered by Unigine Engine

Heaven Benchmark v3.0 Basic

FPS:
57.8
Scores:
1456
Min FPS:
28.2
Max FPS:
121.0
Hardware

Binary:
Windows 32bit Visual C++ 1600 Release Mar 7 2012
Operating system:
Windows 7 (build 7601, Service Pack 1) 64bit
CPU model:
Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
CPU flags:
3292MHz MMX SSE SSE2 SSE3 SSSE3 SSE41 SSE42 HTT
GPU model:
Intel(R) HD Graphics Family 8.15.10.2372 3860Mb
Settings

Render:
direct3d11
Mode:
1920x1080 4xAA fullscreen
Shaders:
high
Textures:
high
Filter:
trilinear
Anisotropy:
4x
Occlusion:
enabled
Refraction:
enabled
Volumetric:
enabled
Tessellation:
normal

Any Good?
Click to expand...

From what I've read in this post, that score is solid. It's roughly the same as I get with my MSI 7850 too, and I'm happy with it. :)
 
I need to set mine (vtx) to 2.15V to be able to run round heaven multiple times. I think I put everything to max though, so higher setting than that I think. and temps hit about 80-82 with fan on bloody high aswell.

I might invest in a gellid cooler when it comes to payday!
 
pandem0nium said:
I need to set mine (vtx) to 2.15V to be able to run round heaven multiple times. I think I put everything to max though, so higher setting than that I think. and temps hit about 80-82 with fan on bloody high aswell.

I might invest in a gellid cooler when it comes to payday!
Click to expand...

I do hope that is a typo or there's going to be a smouldering crater where your GPU used to be :D
 
Hi, looking to drop about £420 on a graphics card, I was looking at the stock 680 or an overclocked 7950 (blowing my extra cash on some good headphones). But after reading this thread I might just change my mind.

What would you recommend? One 680, one 7950 or two 7850's?
 
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2 7850s doesn't really make sense yet, i would just go with a 7970 personally if you can swing it. the 7850 just runs very cool and has a lot of OC headroom (and therefore is a good bang for your buck), but that shouldn't deter people with bigger wallets from the 680s and 7970s out there.
 
what are you guys' stock voltage settings on the 7850 OC? there is someone over on anandtech that swears his sapphire OC came at 1.21v. if that's true, it sure provides us with the "what's a safe voltage?" answer we've all been looking for. mine came at 1.075v, a sapphire OC edition that is.
 
pandem0nium said:
Also chaps, I'm running the card in a Pcie x16 2.0 slot, would that be limiting my clocks?
Click to expand...

Someone elsewhere mentioned that it's unlikely we'd even saturate PCIE x16 2.0 slot, even though it's a 3.0 compatible card. It's also a DX11.1 (Windows 8) compatible card so it's just a nice extra selling feature for those that want to migrate this card to a brand new motherboard / operating system. So, no I doubt 2.0 is limiting your clocks. It's just luck of the draw between video cards whether same / different brand behaving differently from the next.

I have the Sapphire 7850 OC. As a complete overclocking noob, I researched here and asked a few questions and started the overclock with 1050 core clock, while leaving the voltage and memory clock. This was a nice head start, and from there I did 10 Mhz core clock increments until Heaven crashed / vpu recovery. Then bumped up the voltage by 10 mV (0.01 V). Rinse / repeat up to 1200 core and 1.170 voltage.
When it was all said and done, I managed 1200 / 5800 with 1.176 voltage. Most Sapphire OC users have reported the same results, with a few exceptions and some guys managing slightly higher results.

I've looped Heaven all night long and it didn't crash, while temperatures remained between 75-78 celcius.
I played a couple hours of Serious Sam 3: BFE, which is a pretty hardware intense game, even though it's DX9. Since I'm never too trusting of auto fan settings, I manually bumped fan to 85% (random number lol), and the temperature peaked at 78 celcius. It played fine, albeit dipping into the 30 something framerate depending on map, but that's the same for all folks with different cards running this game.
Also tried some Diablo 3 beta, but of course that's not graphically demanding at all. No crashes.

By the way, I bought Serious Sam 3 for $40 a little over a week ago, now it's $13.60 on Steam....lol, just my luck! The game is a blast and definitely challenging.
Way off topic I know, just felt like talking :)
 
Jason3022 said:
Someone elsewhere mentioned that it's unlikely we'd even saturate PCIE x16 2.0 slot, even though it's a 3.0 compatible card. It's also a DX11.1 (Windows 8) compatible card so it's just a nice extra selling feature for those that want to migrate this card to a brand new motherboard / operating system. So, no I doubt 2.0 is limiting your clocks. It's just luck of the draw between video cards whether same / different brand behaving differently from the next.

I have the Sapphire 7850 OC. As a complete overclocking noob, I researched here and asked a few questions and started the overclock with 1050 core clock, while leaving the voltage and memory clock. This was a nice head start, and from there I did 10 Mhz core clock increments until Heaven crashed / vpu recovery. Then bumped up the voltage by 10 mV (0.01 V). Rinse / repeat up to 1200 core and 1.170 voltage.
When it was all said and done, I managed 1200 / 5800 with 1.176 voltage. Most Sapphire OC users have reported the same results, with a few exceptions and some guys managing slightly higher results.

I've looped Heaven all night long and it didn't crash, while temperatures remained between 75-78 celcius.
I played a couple hours of Serious Sam 3: BFE, which is a pretty hardware intense game, even though it's DX9. Since I'm never too trusting of auto fan settings, I manually bumped fan to 85% (random number lol), and the temperature peaked at 78 celcius. It played fine, albeit dipping into the 30 something framerate depending on map, but that's the same for all folks with different cards running this game.
Also tried some Diablo 3 beta, but of course that's not graphically demanding at all. No crashes.

By the way, I bought Serious Sam 3 for $40 a little over a week ago, now it's $13.60 on Steam....lol, just my luck! The game is a blast and definitely challenging.
Way off topic I know, just felt like talking :)
Click to expand...

cool man, though i didn't think you needed to run it all night. 30 minutes max is probably good. i mean, how long do you think you'll play BF3 for? and it's not as distressed a program as unigine.

i also got mine to 1.176 @ 1200/5800 with the sapphire OC. though my temps are WAY lower, maxing around 68c. but your temps are fine. i accidentally ran a bench with fan at 10% and my temps only got to 86c. though these coolers are awesome, but maybe your case has poor airflow?

btw, i have tried 1200/6000 @ 1.176 and it failed, so VRAM definitely needs some power increases from time to time.
 
tuffluck said:
cool man, though i didn't think you needed to run it all night. 30 minutes max is probably good. i mean, how long do you think you'll play BF3 for? and it's not as distressed a program as unigine.

i also got mine to 1.176 @ 1200/5800 with the sapphire OC. though my temps are WAY lower, maxing around 68c. but your temps are fine. i accidentally ran a bench with fan at 10% and my temps only got to 86c. though these coolers are awesome, but maybe your case has poor airflow?

btw, i have tried 1200/6000 @ 1.176 and it failed, so VRAM definitely needs some power increases from time to time.
Click to expand...

Good to know. I just stopped at 1200/5800. Figured anything else would be more academic than practical.
Interesting temperatures you've got. Not sure what's going on. Maybe because I ran it so long, who knows. I do have the side of the case open, but could try it closed to see what happens. There are 3 case fans: front, top and back. Power supply unit is on the bottom, a good 4" below graphics card. Perhaps a bit of heat rising from psu.
 
SHOTinTHEface86 said:
when did this appear on the 7850 page? Any knowledge on release dates for it and how the new TF compares to the TF3?
http://www.overclockers.co.uk/showproduct.php?prodid=GX-157-MS&groupid=701&catid=56&subcat=411
Click to expand...

Came up around the end of last week iirc (and started £10 cheaper :(). Put an order in for one yesterday so we'll see when they turn up. I did see a rep from MSI saying they were on the way I think

edit - http://forums.overclockers.co.uk/showpost.php?p=21744005&postcount=8
 
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they do look tempting but i prefer the look of the tf3 to the tf4 from the pics. Probably doesnt matter too much once it's in your case face down though i guess :)

I wander if this is why ocuk have not stocked the tf3's?
 
My thanks to everyone for this thread, nice job.
I am building a new system, and when i got to choosing a gpu i could not make up my mind on what to get as im on a buget. I was going to settle for a GTX560Ti as Nvidia is what im used to, but decided to research AMD chips so as to get a full picture on whats available. Im glad i did, and have decided to go with AMD. This thead has been great at showing what is possible from a 7850.
So now its down to choice,and i have 2 that im thinking of.

1. http://www.overclockers.co.uk/showproduct.php?prodid=GX-157-MS&groupid=701&catid=56&subcat=411 The soon to arrive MSI HD 7850TF IV Power Edition.

or

2. http://www.overclockers.co.uk/showproduct.php?prodid=GX-052-HS The soon to arrive HIS HD 7850 IceQ.


Im pretty sure the MSI with its x3 overvoltage and enhanced PWM is probably the best choice.with the TF IV boasting some good cooling and noise levels.

The HIS looks good as well from the HIS website. But Thats HIS reviewing its own card.;) The cooler looks good and is very quiet. I just havnt seen anyone here who has tried one of these.

Could anyone offer their opinion as to these 2 cards and thier potential to OC.
This would help very much.:)
 
Jason3022 said:
Good to know. I just stopped at 1200/5800. Figured anything else would be more academic than practical.
Interesting temperatures you've got. Not sure what's going on. Maybe because I ran it so long, who knows. I do have the side of the case open, but could try it closed to see what happens. There are 3 case fans: front, top and back. Power supply unit is on the bottom, a good 4" below graphics card. Perhaps a bit of heat rising from psu.
Click to expand...

i have an older case, about 5 years. it has one 80mm front fan and one 120mm rear fan, plus a 120mm fan on the CPU and the 120mm fan on the PSU. the video card obviously has the same fan as yours, but i get incredibly low CPU/GPU temps compared to others i've seen. i think a lot of the new cases just stick fans on there for added revenue, not necessarily for added benefit.

oh, and my computer even sits in one of those cutouts in a desk made for computers, so a lot of the air it is recirculating is the same hot air it is producing, so it could be even lower if i moved it. if i were you i'd put the side back on and see if that helps.
 
Well after loads of reading this thread and countless others i decided to buy one the 7850 cards. Glad i did these things are great for the £200 mark. coming from an eah6850 this things blows it away. I opted for the eah7850 on the dearer side of the range but the cooler on these is amazing.
So anyway im managing to run it at these settings quite comforatbly and i think it could quite easily do more, but dont want to push it too far.
Im fairly new to this aswell so any advice would be great.
And thanks for this thread helped me out a lot.
Temps stay stable at 68-70.

benchmarkprtscreen2542012v2.jpg
 
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RICKST20 said:
Well after loads of reading this thread and countless others
Click to expand...

Then you will notice just like every new member here, you have failed to setup Heaven at the same settings as everyone else.

Don't worry you won't be the last!. Now switch on 'Tessellation' and give that a try and please post the temps aswell if possible.

Anyway good choice on the ASUS as they really do have fantastic cooling.
 
chris74 said:
Then you will notice just like every new member here, you have failed to setup Heaven at the same settings as everyone else.
Click to expand...

Yep spotted that.
noob moment there sorry.
We all have to learn somewhere i guess.

00006.jpg


temp.jpg

tempidle.gif

This was maximum temp during that full run and at idle. Not sure why the clock monitors are different though?
 
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