Looking around at reviews they only got 1120 stable. Maybe you should aim for between 1150-1175 and leave it there. After that see what you can get on the memory.
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AMD - How To Overclock The Official Way Using Afterburner + Step By Step Overclocking Guide + Comple
- Thread starter LtMatt
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Looking around at reviews they only got 1120 stable. Maybe you should aim for between 1150-1175 and leave it there. After that see what you can get on the memory.
Sounds like its on the edge. I'd leave it alone and see if its game stable. If it is then start on the memory. Once you have the memory bench and game stable then you can experiment lowering voltages.
Nice one mate thanks a lot. I'll give sleeping dogs a go for a hour or so.
EDIT - Temps at the end of bench were 70c aswell, that's with the fan being 70%.
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I remember there being a list with different brands of 7850 and the OC they achieved. Can't seem to find it anymore though. I think I found the link somewhere on this forum.
Anyway, you could you link me to your source? Maybe it is the same I remember. I would love to take a look at it since I might return my card soon. The ASIC with 68.8% is rather poor and I might opt for the 2GB version since I can a lot of tiny micro lags in BF3 on Ultra which I think corresponds to the mere 1GB of VRAM.
Thanks
I just looked at a couple of reviews from typing "HIS 7850 2GB iceQX review" into google. Nothing like you mentioned im afraid though that would be handy if you could find it.
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From what I read during the last days it seems that you should keep pushing memory clock until you either get crashes or a lower benchmarking score. It seems some poeple can OC their memory clock to about 1375-1400 MHz but I myself got crashes after 1250MHz. The increased memory clock, however, is much less important than the core because it does not greatly influence performance.
You seem to get above 1250MHz without crashes but with a decreased benchmarking score. If I understand this correctly this means that the graphic card does make some small errors with a too high memory clock and therefore has to perform certain steps serveral times until it gets the right result. Therefore you actually lose performance. So, I'd say you might just want to leave your memory clock at 1250MHz and test if everything is stable. Then you might try to lower your voltage and find the minimal voltage you need to run your 1175core/1250memory.
On the other hand, you could also try to findle around a bit more with the memory and maybe you notice another increase if you bump it further? I don't know though so best to wait until someone who knows - aka LtMatt- answers.
You seem to get above 1250MHz without crashes but with a decreased benchmarking score. If I understand this correctly this means that the graphic card does make some small errors with a too high memory clock and therefore has to perform certain steps serveral times until it gets the right result. Therefore you actually lose performance. So, I'd say you might just want to leave your memory clock at 1250MHz and test if everything is stable. Then you might try to lower your voltage and find the minimal voltage you need to run your 1175core/1250memory.
On the other hand, you could also try to findle around a bit more with the memory and maybe you notice another increase if you bump it further? I don't know though so best to wait until someone who knows - aka LtMatt- answers.
1175/1225 seems fully stable in benchmark now. I tested it 5 times, one after another. No crashes or anything amiss.
Now I'll give it another go in Sleeping Dogs and take a look at the voltages, I suspect their won't be much leverage though but I guess it's just finding the sweet spot.
Now I'll give it another go in Sleeping Dogs and take a look at the voltages, I suspect their won't be much leverage though but I guess it's just finding the sweet spot.
Now you're getting the hang of it. Keep at it.
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Yeppers, good job.
Any lower than 1200 on the voltage and it just BSOD.
Is it safe to keep the card always running at 1200v?
Yes.
Thanks for all of your help mate. I will just keep stability testing now, etc.
I am a little bit gutted that I couldn't get the RAM any higher than 1225 but I am happy with the performance increase I noticed.
Now I need to figure out a fan profile. The temp doesn't seem to go any higher than 71c when the fan is running at 70%, but I don't mind the fan going at 100% when it needs to, but when not gaming I want it to be as silent as possible.
Is this the profile to go for?:
No problem Tom happy to help.
The fan profiles i created were for a reference 7970 so may not be suitable for all cards. However the one you've picked looks like it might suit your requirements perfectly. You can always tweak it slightly yourself for better performance if needed.
The fan profiles i created were for a reference 7970 so may not be suitable for all cards. However the one you've picked looks like it might suit your requirements perfectly. You can always tweak it slightly yourself for better performance if needed.
Just move it up one more notch.