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Overclocking an XFX Radeon HD 7850 2GB

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  • Overclocking
  • HD
  • Radeon
  • Graphics
Last response: in Graphics & Displays
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April 1, 2013 4:43:59 PM

I want to overclock my xfx radeon hd 7850 2gb.

Firstly should I do it through my asus bios or is there a program i should use instead?

I want to be able to raise the voltage on it.

I have been using CCC and set it at 1050 core, and 1400 memory, but i think i can do better.

I dont think rivatuner is compatible, and cant seem to find a good program to raise the voltage.

I would prefer to do it through my bios (asus sabertooth MB)

thanks. let me know if there is any more information you would need to know.

More about : overclocking xfx radeon 7850 2gb

Best solution

a b K Overclocking
April 1, 2013 4:49:27 PM

Download MSI Afterburner.
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April 1, 2013 4:57:27 PM

okay but i still cant increase the core more than 1050?
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a b K Overclocking
April 1, 2013 5:01:09 PM

Sapphire Trixx is my preference as you don't have to do any EULA or mods to allow voltage increases

Sapphire Trixx also has a limit of 1250mhz AFAIK while MSi is limited to 1050 if you don't mod it
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a b K Overclocking
April 1, 2013 5:01:32 PM

Also download Unigine Heaven Benchmark. You can also use Sapphire Trixx instead of Afterburner.

Steps:
1. Go to MSI Afterburner.
2. Go to settings and then untick the voltage lock. This will allow you to increase the voltage. Apply.
3. Go back and increase voltage about 25 units from the set point.
4. Increase the core clock by 50mhz. I generally increase core clock to double that of the voltage (e.g. +15voltage, +30 mhz core
5. Apply OC.
6. Run Heaven and see for any artefacts or crashes and what not.
7. If everything is well, then go back to OC software and keep on increasing the voltage and core clock.
Repeat steps 3-7 till you crash. If it does, then decrease the core clock.
Also check temperatures when running benchmark, if it appears too high, then lower the voltage. High is above 75C.

This is just what I do and other people may have other methods. The 7850 is a good clocker and majority can OC to around 1150-1200mhz.
Just play around with it.
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a b K Overclocking
April 1, 2013 5:02:40 PM

try trixx overclocking
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a b K Overclocking
April 1, 2013 5:04:14 PM

Like Stickmansam said, use Sapphire Trixx. I personally use that. It's not as problematic when it comes to unlocking voltage and what not. You can apply the same steps, minus Step 2.

With Sapphire Trixx, remember you can scroll down. You will need to scroll down to see the voltage bar.
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a b K Overclocking
April 1, 2013 5:05:58 PM

oddlyinsane said:
Like Stickmansam said, use Sapphire Trixx. I personally use that. It's not as problematic when it comes to unlocking voltage and what not. You can apply the same steps, minus Step 2.

With Sapphire Trixx, remember you can scroll down. You will need to scroll down to see the voltage bar.


I got trolled so hard until I figured I could scroll down :p 

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April 1, 2013 5:34:34 PM

very cool. i used trixx and msi kombuster to test it. i managed to max out at 1200 core!!! using 1.2 volts. my memory is still at 1450. how much typically will that increase?
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April 2, 2013 12:20:36 PM

well i put it back to 1050 core because playing skyrim was unstable. I can still notice much better results using trixx over CCC. my processor is an AMD phenom II 965 edition. Do you think if i upgraded my processor then I would be able to overclock my graphics card more. In other words, is my processor limiting my graphics card a bit?

My system:

MB Sabertooth 990fx
16 gb gskill ddr3 oc 1760
phenom II 965 x4 oc 3.75ghz
xfx radeon 2gb
ocz vertex III 64gb ssd
320gb 5400rpm wd hdd



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a b K Overclocking
April 2, 2013 12:41:00 PM

what psu are you running?

the phenom won't limit your OC though it can bottleneck in some situations. depends on the game/resolution/detail settings
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April 2, 2013 1:07:26 PM

Rosewill HIVE Series HIVE-650 650W Continuous @40°C, 80 PLUS BRONZE Certified
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a b K Overclocking
April 2, 2013 4:58:37 PM

That PSU can power the 7850 no prob

So the OC fail is likely and issue with the OC :p 

When you did your OC did you raise the powertune limit? A non-raised one could cause a crash since powertune would limit the card's power draw?

Any changes to voltage?

and was the crash with core and me OC or just one?
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a b K Overclocking
April 2, 2013 5:04:05 PM

Increase your voltage and don't go to over the top with the core clock. Try 1100 and then see what happens. If all is good, then increase a further 50 mhz. Remember to increase the voltage as a higher core clock requires more power.
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April 3, 2013 11:11:06 AM

The Board Power Li= powertune limit? How much will I have to increase it?
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a b K Overclocking
April 3, 2013 11:57:01 AM

I have my at +20 and you can raise it all the way up to +50.

It won't raise voltage/wattage but allows the card to draw more wattage if it needs to
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August 14, 2014 7:39:00 PM

i have the xfx hd7850 1GB 860/1200mhz at 1.140V i have been testing it and till now i did't touche the voltages, i want to know if i will borke the card if i go beyond de 5000Mhz of the elpida memory speeds, i try it with 975/1300 with stock voltages and everuthing was fine till i ran Wolfestein ... started to se artifacts ...
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September 7, 2014 1:07:40 AM

If you see the artifacts - means stop and lowered your vrame frequency by at least 15 mhz and try the test again. If you see it again lower again by 15 mhz if not then call it stable.

It is almost impossible to kill your video through software overclocking, because it has some bios function protections against overvoltage or overheating, but keep in mind that you are doing this on your own risk and expenses.

Agiel said:
i have the xfx hd7850 1GB 860/1200mhz at 1.140V i have been testing it and till now i did't touche the voltages, i want to know if i will borke the card if i go beyond de 5000Mhz of the elpida memory speeds, i try it with 975/1300 with stock voltages and everuthing was fine till i ran Wolfestein ... started to se artifacts ...


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September 7, 2014 1:03:59 PM

the artefacts came after OCing without touching the Voltages, so i was OCing only with CCC no Voltages change, i dit now 1000/1300 at 1.185v ran MSI Combustor for a while and no artifacts ... so i asume it is stable right ?
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October 8, 2014 3:33:59 PM

You're in luck! I happen to have a similar setup. Do the following.

1, download gpuz and check your asic quality.

2, Since you failed at 1200 core, your asic quality is somewhere in between 69 ~ 85.

3, If that's the case then put your voltage (1.218v). That's the maximum safe voltage for your card and not the 1.225v.

4, Next, put the power limit to 25% and try this overclock (1125/1375).

5, Tell me how it goes.
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October 8, 2014 5:57:59 PM

i don't see the option you are talking ... asic ?? GPU-Z has no such option ... and MSI Afterburner only allow you to put power limit to 20% ... so i don't know what are you talking about ... please explain ... :) 
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October 9, 2014 1:26:50 AM

Ok. On the top left corner of gpuz, there's a small icon. Right click on it and select check asic quality. About the power limit, just put it to 10.
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October 9, 2014 8:14:42 AM

it says 79.8% what does it means??
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October 9, 2014 1:54:39 PM

That means your cards chip quality is better than mine. The cards have has a 74.2% and it's only capable of reaching 1140 core at 1.218v. Since your card have a higher quality, try putting the core at 1150 ~ 1175 using 1.218v and raise the power limit to 15%. By the way, one of the best program to check your overclock is heaven 4.0. Try it and tell me how it goes.
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October 9, 2014 2:23:17 PM

and memory clock to ??? im using 1250, elpia's memorys are set yo run at 5000Mhz/4=1250Mhz avery time y go beyond 1330Mhz have crash in some games and artifacts ...
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October 9, 2014 2:57:35 PM

I see. Sorry to hear about your memory. Looks like you got a lower quality elipda memory and not the hynix ones. But dont worry about it. Just leave it at 1250 for it will not make any difference at all as long as you don't do crossfire. The 1250 memory bandwidth is more than enough for a single 7850 even for a 7950.
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October 9, 2014 4:05:17 PM

im using this OC 1110/1250 at 1.1750 V ... i saw a thred in other forum with this :

According to Alexey Nikolaichuk (the author of RivaTuner and MSI Afterburner), the correlation between voltage and quality is like follows:



ASIC quality < 75% - 1.1750 V;
ASIC quality < 80% - 1.1125 V;
ASIC quality < 85% - 1.0500 V;
ASIC quality < 90% - 1.0250 V;
ASIC quality ≤ 100% - 1.0250 V

my xfx is the 1GB version and at 1300Mhz is very stable, but temp goes to a dangerous top ... about 75 ~ 81C ... so i went back to 1250 ... playing farcry at ultra temp never goes beyond 68 ~ 70c ...
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October 10, 2014 3:13:17 PM

Have you tried going for 1125 core? That's the ideal oc beyond 1050. I suggest you up the voltage to 1.218v and put the power limit to 15% then start overclocking the core from there.
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October 10, 2014 3:23:01 PM

no the far i have tried is 1110 and 1250 at 1.190v and is stable but hot ... i will try this later, im now testing it via CCC in 1000/1250 power at 20% no voltages increase and never have seen the 75c ... FarCry 62 ~ 68c ... i have the one fan version so, i guest it's not designed to this kind of OC it get really hot, as hot as nvidia fermis's
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October 10, 2014 3:35:27 PM

i did a test, 1150/1250 1.20v PWL 15% and was promissing, reached 80c ant the 16 screen in Unigine Valley ... all i care is temps, the lifespan will be affected in long term sittuations ... that's why im concern about ... mostly ...
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October 10, 2014 4:34:00 PM

Alright. If temp is your concern, then pull the fan speed all the way to max. The whole idea about overclocking is how high you can get your card running stable.
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October 10, 2014 4:52:04 PM

Test your card how far it can go at 1.218v with fan running at 100% and power limit to 20‰.

Test the stability using heaven 4.0 at max settings.

Once your overclock has passed heaven, stay decreasing the voltage and find the lowest voltage your overclock can run at. Again by running heaven.

And when you found. What the best oc and voltage for your card is, that's the time to adjust and lower the fan speed. I recommend creating fan profile.
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