Hey can you please tell how you tweaked your voltage,by how much, and If there have been any negative effects. I'm really determined to give this a try so the more info you can give me the better.
Thanks so much in advance
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Overclocking 5750 (mobility 5850) - Results inside
- Thread starter henrikrox
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Hey can you please tell how you tweaked your voltage,by how much, and If there have been any negative effects. I'm really determined to give this a try so the more info you can give me the better.
Thanks so much in advance
This would be very useful. I feel my instability over 1100/780 is voltage related too.
If you have time to give the voltage tweak info, I'd be really interested in testing that.
I am aware of the risks of burn & less life of the chips.
Hey guys
Awesome work on the 5850m. Really appreciate your efforts. 🙂
I recently got the 27" 2.93 i7 with the full intension of oc'ing the 5850 to get a decent upgrade over the 4850 from the previous model. I've read this entire thread, but I'm new to over-clocking and need a little help as my card may have an issue which I'm not too happy about.
The gpu runs fine at stock levels. I get decent fps out of Battlefield BC2 at x res.
But if I set it to 750/1075 (with fans 1800/1800/1600) as per the general consensus from the testing in this thread, it crashes to a black screen when loading BFBC2 and also throws up black and white vertical stripes in the Kombustor burn in test.
750/1075 should be no where near the maximum oc limit for this card right? So what' could be wrong with mine? or is it an app specific issue? It's still under warranty. Should I consider a service or do more testing? 😕
Thanks guys. Any help much appreciated.
Cont. below
Further testing of BFBC2 with clocks at 700/1025. Started getting several quite large artifacts after 3-4 mins with only minimal increase in fps (over stock clocks). After continuing with artifacts for 2 min screen eventually went black, then white, then had to force shutdown.
Not happy. 🙁 Hoping it's an issue with the game and NOT my card.
(In case it helps to know I'm also running Fraps at the same time).
---------------------------
Edit: More test results
Kombustor benchmark at 1920x1080 fullscreen, fans at 1800 1800 1600.
Clock, Score, Ave fps
------------------------
628/1000, 755, 16
700/1050, 824, 17
710/1050, 831, 17
720/1050, 843, 17
725/1075, 837, 17
730/1075, Black & White vertical stripes for 30 sec, crash, reboot.
750/1075, immediate black screen, reboot.
Notes: Only marginal performance increases from 628/100 to 725/1075. System crashing with clocks >=730/1075.
GPU temps were all well within acceptable ranges (60-70 degrees) for all tests. So it doesn't seem to be a temp issue.
Cinebench Benchmark fans at 1800 1800 1600
628/1000, 56.93fps
720/1050, 57.41fps
730/1050, 57.63fps
750/1075, 5 secs/Flashing grey/Crash/Reboot
Notes: Even on a far less intense gpu test my card still seems to have issues going above 730/1050. Performance boost is again very underwhelming... 16% increase in clock speed yeilding only 1.2% fps!! what's up with that?
WHAT IS WRONG WITH THIS CARD? Frustrated. 😡 Please help!
Thanks.
Side note: My GPU temp is being reported as 47,370 degrees!!! by all MSI software (Afterburner, Kombustor and Furmark). While GPU-Z reports normal range temps around 50-60 degrees. Has anyone else come across this bug or got a fix?
Awesome work on the 5850m. Really appreciate your efforts. 🙂
I recently got the 27" 2.93 i7 with the full intension of oc'ing the 5850 to get a decent upgrade over the 4850 from the previous model. I've read this entire thread, but I'm new to over-clocking and need a little help as my card may have an issue which I'm not too happy about.
The gpu runs fine at stock levels. I get decent fps out of Battlefield BC2 at x res.
But if I set it to 750/1075 (with fans 1800/1800/1600) as per the general consensus from the testing in this thread, it crashes to a black screen when loading BFBC2 and also throws up black and white vertical stripes in the Kombustor burn in test.
750/1075 should be no where near the maximum oc limit for this card right? So what' could be wrong with mine? or is it an app specific issue? It's still under warranty. Should I consider a service or do more testing? 😕
Thanks guys. Any help much appreciated.
Cont. below
Further testing of BFBC2 with clocks at 700/1025. Started getting several quite large artifacts after 3-4 mins with only minimal increase in fps (over stock clocks). After continuing with artifacts for 2 min screen eventually went black, then white, then had to force shutdown.
Not happy. 🙁 Hoping it's an issue with the game and NOT my card.
(In case it helps to know I'm also running Fraps at the same time).
---------------------------
Edit: More test results
Kombustor benchmark at 1920x1080 fullscreen, fans at 1800 1800 1600.
Clock, Score, Ave fps
------------------------
628/1000, 755, 16
700/1050, 824, 17
710/1050, 831, 17
720/1050, 843, 17
725/1075, 837, 17
730/1075, Black & White vertical stripes for 30 sec, crash, reboot.
750/1075, immediate black screen, reboot.
Notes: Only marginal performance increases from 628/100 to 725/1075. System crashing with clocks >=730/1075.
GPU temps were all well within acceptable ranges (60-70 degrees) for all tests. So it doesn't seem to be a temp issue.
Cinebench Benchmark fans at 1800 1800 1600
628/1000, 56.93fps
720/1050, 57.41fps
730/1050, 57.63fps
750/1075, 5 secs/Flashing grey/Crash/Reboot
Notes: Even on a far less intense gpu test my card still seems to have issues going above 730/1050. Performance boost is again very underwhelming... 16% increase in clock speed yeilding only 1.2% fps!! what's up with that?
WHAT IS WRONG WITH THIS CARD? Frustrated. 😡 Please help!
Thanks.
Side note: My GPU temp is being reported as 47,370 degrees!!! by all MSI software (Afterburner, Kombustor and Furmark). While GPU-Z reports normal range temps around 50-60 degrees. Has anyone else come across this bug or got a fix?
Last edited:
Hellhammer
Moderator emeritus
It is possible that there is something wrong with the card. Each chip is binned individually so the quality can differ, some OC better that others. However, if everything runs fine at default clocks, then there isn't much you can do. It is only designed to run at the default clock so you can't really go an complain that it doesn't OC as well as some do.
If you are still within the 14-day return period, then you can exchange it.
If you are still within the 14-day return period, then you can exchange it.
Thanks Hellhammer,
I was afraid you were going to say that. It's only 4 months old 😡
Seems I got a chip that should be capable of going to 800 that only goes to 730 🙁
Even so, with the over clock it is capable of, how do we explain the poor performance boost? (16% increase in clock speed yielding only 1.2% fps!)
Shouldn't the performance boost be relative to the clock speed increase irrespective of the card's maximum clock speed?
4 months old I'm afraid.
BTW should you be able to oc the previous 4850m card? and if so by how much?
cheers
Hey Henrikrox,
I'd like to run some Furmark benchmarks on my 5850m to compare the results to your identical card as my card seems to have a serious underperformance issue!
So I'd like to match your test environment as closely as possible.
What were your Furmark settings? Resolution, AA?
Which options did you have selected: Dynamic bg, dynamic camera, burn in, post fx?
What OS were you running? Win 7 64?
Does RAM affect gpu performance?
Anything else I should be aware of that might affect gpu performance? I have my fans set at exactly the same as you.
thanks very much
Loramarthalas
macrumors member
Bump.
Just thought I would comment on the absolute awesomeness of this thread. It taught me how to overclock like a pro! I now have everything automated, so that when I boot in Win7, my fans speed up and the overclock kicks in. Just brilliant. It's like getting a free update for my graphics card.
I've been playing Deus Ex: HR at native res DX11, with everything on high and getting a solid 30fps. Even Crysis 2, I can play at native res, DX11, and with the settings on the second highest. It looks mindblowingly good.
Anyway, big big thanks to imacNoob and henrikrox and all the other posters here who contributed.
Just thought I would comment on the absolute awesomeness of this thread. It taught me how to overclock like a pro! I now have everything automated, so that when I boot in Win7, my fans speed up and the overclock kicks in. Just brilliant. It's like getting a free update for my graphics card.
I've been playing Deus Ex: HR at native res DX11, with everything on high and getting a solid 30fps. Even Crysis 2, I can play at native res, DX11, and with the settings on the second highest. It looks mindblowingly good.
Anyway, big big thanks to imacNoob and henrikrox and all the other posters here who contributed.
chevalier433
macrumors 6502a
Firstly a big thanx to all of you guys great work 20% performance gain its not bad at all!I have a critical question for you the msi afterburner overclock when i boot to os x stay or it reset to gpu default clock speed?
Hellhammer
Moderator emeritus
I've been referring to this thread a lot whilst experimenting with overclocking my 5750. I've managed to get 800/1260 with a very slight voltage bump. At least I assume it's a slight increase. Does anyone know what the stock voltage for this card is?
I was using Afterburner but I turned to ATI Tray Tools as that allowed me to adjust the voltage. I've always been a bit wary of doing that but I've noticed no dramatic temperature increase. I just increase the fan speeds to 2000/2000/1400 and the max temps I get are ~74C. I can play BF3 on high settings at 1920x1080. This card doesn't seem to do well with 2560x1440.
EDIT: I should add that 750 was the stable core clock value at stock voltage. When I adjusted it to 1.010 in Tray Tools I was able to get to no higher than 800 which suggests the stock voltage might not be 1.000.
I was using Afterburner but I turned to ATI Tray Tools as that allowed me to adjust the voltage. I've always been a bit wary of doing that but I've noticed no dramatic temperature increase. I just increase the fan speeds to 2000/2000/1400 and the max temps I get are ~74C. I can play BF3 on high settings at 1920x1080. This card doesn't seem to do well with 2560x1440.
EDIT: I should add that 750 was the stable core clock value at stock voltage. When I adjusted it to 1.010 in Tray Tools I was able to get to no higher than 800 which suggests the stock voltage might not be 1.000.
Last edited: