*** Official Radeon HD5800 Series Overclocking Thread ***

[kemo]

1050/1350 vgpu@1.279v:

Your PCI-E is running @ 8x

[Gimmpy224]

Hey guys, I just bought a powercolor 5850 pcs+ on sale at zipzoomfly for $270.

It has a non-reference board and I was wondering what's the best way to overclock it? Can the non-reference boards be overclocked through a bios mod or am I limited to just a hardware mod.

Also, if I perform a hardware over-volt, does that voltage then get applied to both 2D and 3D clocks? I would like to keep the low power consumption in 2D but up the volts for 3D.

So is there any way to increase just the 3D voltage on a non reference 5850?
Thanks

I too would like to know this 0,o

[muggy]

From what I've gathered, the powercolor 5850 pcs+ has a voltage regulator that doesn't allow for adjustment, it just switches between the voltage registers. I read that this powercolor model has a slight voltage increase over stock, so it might help you to achieve better overclocks as well. Some online reviews of this card have shown overclocks up to 950 core. You wouldn't be able to change voltage through the bios either.

There are a few threads on XS about doing hard-mod's, I wouldn't know too much about it as I haven't done it. I would expect that all voltages would increase.

[prznar1]

someone has a pcb shots of his 5850 icooler version? it could help me with oc.

[muzwa kai]

im just wondering if many people have had 5850s die after using vGPU of around 1.2v and higher. sorry if its been discussed (too many pages)

[madriddistas]

Hye guys, need to ask to those who achieved clocking HD5870 to 1000/1300 in stock HSF, didn't your VRM temp shoots very high? I'm trying to find solutions for that but my country is not selling the VRM-R4 and VRM-R5 heat sink for time being, so anybody found any other method should I just leave it like that and worry less about it?

Thanks~

[ga1ve1an]

Have a question to ask regarding the clocks I am getting on my 5870. Trying to figure out what the official stock voltages are.. Keep reading it is 1.125 and other places say it is 1.162. Using Afterburner it shows 1.162. But just to test I ran it at 1.125 to see how far it would go with just that voltage. Hit 990 easy on stock. This is what I got below... (Ran the kombustor multiple times)



My question is if 1.162 is stock what is safe to push the voltage on a 5870? Because it looks like I have some headroom.

[emertX]

My 5970 running @ 1100/1300 @ 1,412V

[Linuxfan]

Nice 5970 clocks! Was that on the stock cooler?

[NoGuru]

Nice 5970 clocks! Was that on the stock cooler?

No, he is on H2O.

[emertX]

Yes!
It was an EK!

[rhiridflaidd]

Quick question.

What is a sensible voltage to run a 5870 at, with water. Low temps, 50's at load for V reg and cores.

Usually I'm happy with 0.1v over stock. What are the expereinces at 1.35 with these cards.

What is the highest factory set voltage on the premium range of cards?

[justin.kerr]

here is mine at 1.35V on GPU's it will run Vantage at 1090, dX11 games and Dx11 benches at 1070. at 1062Mhz I have played most of my games, Crysis, Crysis warhead, mass effect and 2, COD 4 and 5 BF2, and Dragons age for hours on end an no issues. makes me wonder why the hell I waited 6 months to get the 5870...

[alyns]

My 18221 in Vantage with my 5850 with MSI 5870 bios .

[YGr7JiOETk]

is there a thread like this but for the 4800 series ???

[YGr7JiOETk]

Can you raise the voltage of XFX HD5870 XXX, model with fan in the middle?

Same problem here, can't make the voltages budge. Using the ASUS version bios.

[mbreslin]

Fan in the middle is not reference and can't softmod bios afaik. Sorry.

[aussie-revhead]

Guys, I have seen a few hwbot scores using 1100+ on WC 5870 core clock, do many clock this high? Do they need higher than 24/7 voltages to get over 1000? I have been offered one locally but it can only do 1050 at 1.3v, is this typical? I will be water cooling if this influences the clocks much.

[NoGuru]

Guys, I have seen a few hwbot scores using 1100+ on 5870 core clock, do many clock this high? Do they need higher than 24/7 voltages to get over 1000? I have been offered one locally but it can only do 1050 at 1.3v, is this typical?

Some may get that high, but I'm sure he was using some extreme cooling methods. YES. YES.

[aussie-revhead]

OK, I should clarify, I want to water cool so I was looking at wc results.

[pvhk]

MSI R5870 lightning on air @1.299v

[YGr7JiOETk]

Can you raise the voltage of XFX HD5870 XXX, model with fan in the middle?

NO it does not. This is the absolute worst 5870 GPU that you can get. There is NO difference in benchmarks even after overclocked. It has no adjustable voltage regulators. I have this one, and I'm going to RMA this piece of soon.

[WeStSiDePLaYa]

So i got the msi 5850 oc edition. running at 900mhz core stable with stock volts/cooling.

[rocketr2]

ASUS 5870 @1.299v and i3-530 all on air

[johnnymossville]

here's mine, Powercolor 5870. I'm starting to get a bit more daring and giving it a workout.