The Radeon 7850 is an overclocking beast

[kmoros1989]

Alright so I played around with it some more, and cleaned all my old 5770 drivers. Now, all that is there is 12.4 for this card, just incase those were causing the random BF3 bsod. Set speeds at 1000mhz core/1200memory. I left memory at stock because raising it to 1250 or 1300 seemed to up my temps about one degree without any significant framerate jump in Unigine 3.0 (Did two tests, extra memory netted me all of .1 and .3 fps over stock)

Again, I am running the diamond card linked above which one person has advised against overclocking because it is a reference card with a simple fan.

After about an hour or so of BF3, no blue screen, with temps topping out at around 71 degrees. It isn't actually proof of anything yet, because even before I had gone over an hour without a BSOD in BF3, but it did happen randomly every once in a while.

I played the game at stock clock, and temps maxed out around 67-68 degrees. So the OC seems to make my card run about 3-4 degrees hotter.

Is this a safe temp? Should I cease overclocking on this card, too risky? Note that I don't plan on going any further than the 1000/1200 it is now on, I think I wanted a few extra frames to keep me always above 30fps on ultra in BF3. (on stock, in certain high intensity firefights with long view distances, it would dip to 27-28)

And, I probably also wanted the mental satisfaction of having a "GHz" in speed lol. Any more advice is appreciated.

Highest temp I've had so far is 74 degrees in Stalker of all games. (Hitting over 140 fps at times, but I couldn't find a v-sync in that game lol) And I ran furmark for ten minutes and it hit 77 degrees.

 

[SickBeast]

Your temps are fine. They would be better with better cooling but with your stock cooler you're doing fine.

 

[Smartazz]

Around 70C for a reference cooler is great. My card gets close to 90C while gaming which is quite hot, but my ambient temps are pretty high.

 

[nFeF]

That's a nice overclock for stock volts. Running 1125/1375 @ 1.185 atm and slowly bringing my clocks and volts down as I am being bottlenecked by my Q6600 at high clocks anyways. Nice to know I have that extra margin when I do upgrade my cpu eventually.

I find that 3dmark doesn't do a very good job at stressing the GPU. Why not run Heaven at the resolution and and clocks that you want and see for yourself if there's any improvement or if the extra volts is worth it.

Did two runs of Heaven tonight just to see if that would phase it, nothing there either. No temps above 55c either so it's a solid in my book considering the ASIC.

I could mess inching towards 1200 and running benches and comparing frames to see if it's worth it yes.. but I was just looking for an outside opinion on it. Myself i'm probably just going to leave it where it's at and call it a 'good'.

 

[kmoros1989]

thanks for the responses guys! After a couple more hours of BF3 on ultra, still no dreaded BSOD (by my estimates, I was getting one about once every 1-2 hours of play before)

The only thing that has really changed is that I have left my memory clock at stock instead of 1250/1300 (cuz like I said, made it about a degree hotter with no real difference in frames) , and I scrubbed the old drivers from my old 5770 card. Not sure if either can cause the Blue screen crash, but hopefully that was it.

If it happens again, guess I'll reevaluate. It still has only happened with BF3, hours of metro 2033, WoW, and SKyrim have run fine.

 

[MisterMac]

thanks for the responses guys! After a couple more hours of BF3 on ultra, still no dreaded BSOD (by my estimates, I was getting one about once every 1-2 hours of play before)

The only thing that has really changed is that I have left my memory clock at stock instead of 1250/1300 (cuz like I said, made it about a degree hotter with no real difference in frames) , and I scrubbed the old drivers from my old 5770 card. Not sure if either can cause the Blue screen crash, but hopefully that was it.

If it happens again, guess I'll reevaluate. It still has only happened with BF3, hours of metro 2033, WoW, and SKyrim have run fine.

Could be memory on the card then - could have gotten a dud in this regard - or the stock reference cooler just sucks at cooling them.

Get a Arctin Twin Turbo II - you'll love it


If i remember 0x116 is Uncore\NB isn't it?
That there's not enough volt to deal with the IMC and transferring data back/forth from GPU and internal busses.

Id suggest if your adventurous just to test with stock @ CPU.
And going higher without mem clock and with mem clock.
(Ignoring the bottlenecks that may occur)


You can then tell if it's CPU related or your memory that's just not being cooled and\or is shitty memory chips

 

[Paulenski]

I have the xfx 7850 double dissipation, it's working great for me.

Currently OC'd to 1000/1350, full load with 65% fan fixed, it's gets around 62-64° C, no voltage bump.

What kind of numbers are you guys getting?

I haven't done any benching yet, but I'll try to get some done for comparison purposes.

Sent from my Sensation 4G VI 4.0.2 with Tapatalk 2

 

[kmoros1989]

I have the xfx 7850 double dissipation, it's working great for me.

Currently OC'd to 1000/1350, full load with 65% fan fixed, it's gets around 62-64° C, no voltage bump.

What kind of numbers are you guys getting?

I haven't done any benching yet, but I'll try to get some done for comparison purposes.

Sent from my Sensation 4G VI 4.0.2 with Tapatalk 2

I actually did that same OC at first before I realized for some reason BF3 was unstable on it! No voltage bump 1000/1350. But since mine doesn't have a fancy cooler, just this boring regular thing, http://www.newegg.com/Product/Produc...82E16814103207

my temps at that clock would hit around 72-73 degrees. Clocked it back down to 1000/1200. In Unigine that barely affected my FPS at all, think I lost a fraction of a frame. Memory OC'd doesn't seem to help all that much.

 

[GroundZero7]

MSI 7850 power edition

Currently at 1200 core 1179mv (1.179)
MSI Kombustor tops out at 65c

I'll push it higher if it's BF3 stable

I'll post back with max vram also when I find it.

 

[zijin_cheng]

I have the DCII 7850, my ASIC is 79%, I'm sure that only affects OC somewhat.

I am able to furmark, 3dmark and heaven with no artifacting or crashing at:

1100/4840 at 1138mv, I haven't done intensive testing, but do you think that I can hit 1200/6000 lower than 1200mv?

EDIT: I'm at 1150/4840 at 1138mV, heaven and furmark 3+ times, no artifacting, crashing...

Heaven at 1150/4840 gives score of 910 at highest settings 1920x1080, and furmark gives 2615, are those normal scores?

 

[SickBeast]

Is anyone else getting "display driver stopped responding" errors when the card wakes up from sleep?

On another note, I am quite proud of this thread. The force runs strong in this one.

 

[Mezzanine]

I have the DCII 7850, my ASIC is 79%, I'm sure that only affects OC somewhat.

I have the same card and my ASIC is 79.6% Mine needs 1.240v to be rock stable at 1200mhz but temps never go over 65c so I consider it to be safe.

 

[zijin_cheng]

I have the same card and my ASIC is 79.6% Mine needs 1.240v to be rock stable at 1200mhz but temps never go over 65c so I consider it to be safe.

Crap I'm not sure why my card is so hot, what are your temps during 100% load when you are not OC'ed?

I get 65C about when 100% GPU load no OC

 

[PerfectCr]

i have the XFX Double D 7850 stock speeds O/C'ed to 975/1250 which is the speed of their Black Edition 7850. Got that OC easily and I could probably go higher but so now I'll keep it here. Pretty seamless overclock. Do I need to ramp up PowerTune to +20% or is that not necessary? I am not sure when that is required. Thanks!

BTW this thing is QUIET and the card is well built. I don't understand why people rag on XFX. For my money they seem like they make quality stuff.

 

[SickBeast]

Put powertune to +20% just in case.

 

[Mezzanine]

Crap I'm not sure why my card is so hot, what are your temps during 100% load when you are not OC'ed?

I get 65C about when 100% GPU load no OC

At stock in Heaven benchmark my max temp was 54c. That's with auto fan.

I have good airflow through my CM690 II and an ambient room temp of about 20c.

 

[silvscorp]

just got my sapphire 7850 OC edition in mail couple of days ago. OC to 1150 core and 5600 memory with stock Voltage setting (1210mv) BF3 ultra setting 1920 x 1080 shows 45-52fps. temp max at 72F

 

[bulgarien]

Hi there im first in this forum.... (i am not from english speaking country so dont worry about my mistakes )

Im Owner of HD 7850 sapphire oc edition. My stock voltage is 1.138v@920mhz i am able to go up to core 1100MHz @1.14v and memory 1300Mhz rock solid. But if i want to push higher i am not able to go with voltage 1.2v to 1150Mhz allways crashing i dont know why ???so does anybody know ho to fix this problem??? my CCC is 12.7 beta but this problem apperas in all versions of driver from 12.4 , 12.6 beta , 12.7beta

 

[Don Karnage]

Hi there im first in this forum.... (i am not from english speaking country so dont worry about my mistakes )

Im Owner of HD 7850 sapphire oc edition. My stock voltage is 1.138v@920mhz i am able to go up to core 1100MHz @1.14v and memory 1300Mhz rock solid. But if i want to push higher i am not able to go with voltage 1.2v to 1150Mhz allways crashing i dont know why ???so does anybody know ho to fix this problem??? my CCC is 12.7 beta but this problem apperas in all versions of driver from 12.4 , 12.6 beta , 12.7beta

Its all about the chip. Some can go high and some cannot

 

[bulgarien]

Its all about the chip. Some can go high and some cannot

But coud it be VRM or mosfets which are cooled by only stick of metal without ribs ?

 

[zijin_cheng]

This is on 1210/5500/1180, max temps of 72oC, so very happy camper

 

[neonguy]

I moded my 7850 seen here
http://hardforum.com/showthread.php?t=1703948
stock heat sink oc 1225/5400 1.195v
haven't tried oc yet with new heatsink yet, just temp testing., 30c cooler with new heatsink

 

[Udgnim]

I'm taking the lazy approach to GPU overclocking and just playing instead of stress testing

GPU throttling doesn't kick in until temps get really high like 90+C right?

currently at 1090/1200 with stock voltage of 1.138 and temps peaking in low 70s and I don't know if I'm just lucky that I haven't needed to up voltage because I haven't seen artifacting or instability yet

 

[bl00tdi]

I hate to do this because many people have already purchased their 7850's, but for anyone else still in the market (such as myself) there are now reference design Powercolor 7870's going for $289.99 on newegg and Amazon. It's worth a look, at the very least.



:waits for it:

 

[neonguy]

i got my 7850 from a guy off craigslist for $200
running 250/5500 1.205 v