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

[NoGuru]

Sapphire 5850 at 1002/1262 thirty minutes furmark stable. http://www.techpowerup.com/gpuz/22mkb/

I have seen people say not to use Furmark, why?

[madriddistas]

MSI R5870 lightning @1000/1300 vgpu@1.174v:

Wow at 1.174v, sweet!

I wanna buy lightning as well but since the non reference card cannot perform voltage modding, I'm afraid that my card can't clock better without that advantage.

All I wanna do is 1000/1300 and from Guru3d's review, they were saying that they had a hard time clocking the lightning near 1GHz.

Others who have lightning card, can you show me your clocking.

P/s : another weird thing I realized is there's no 5870 Vapor-x in this thread that achieved 1000/1300.

[pvhk]

1050/1350 vgpu@1.279v:

[RacingTurtle]

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

Yip you can. This is the card I have.
Volterra FTW!

[yourtoilet]

I have seen people say not to use Furmark, why?

Because it doesn't have build in artifact scanner so I really don't see the point having it other than seeing how far the temps reach.

I use GPU tool's artifact scanner.

[madriddistas]

1050/1350 vgpu@1.279v:

nice Vcore, lightning poisoning me man!


My guess is your doing this on air since your fan speed is at 85%.

1)85%, was it very loud?

2)I'm curious about the temp, if it's possible, can you post the temp later, Thanks.

[strange|ife]

950 on stock voltage doesn't sound all that likely to me, but I'm sure some cards could do it.

yeah not holding my breathe. I have seen some clock that high at less than 1.2v on refrence boards, early 5850. This one i guess isn't Ref.

I have been out of the loop honestly, so busy this past year with work..hard to keep with video card Revisions LOL. I'm gonna buy it and see what i can do. I Game, dont really care for 3Dmark scores. So long as it goes over 800 core i will be happy, these cards will eat and spit out most any game at stock speeds..that extra 13% is just icing on the cake.

[wez]

Sapphire 5850 at 1002/1262 thirty minutes furmark stable. http://www.techpowerup.com/gpuz/22mkb/

I have seen people say not to use Furmark, why?

Because it doesn't have build in artifact scanner so I really don't see the point having it other than seeing how far the temps reach.

I use GPU tool's artifact scanner.

No, it can kill your card if you overdo it
If the people who manufacture and designed your card says its bad, then I'll take their word for it.

[Locke]

doesn't msi have a tool that's exactly like furmark?

[muggy]

Yeah, when I downloaded MSI Afterburner it came with Kombustor, a Furmark made tool.

I think people say "don't use Furmark" to mean that you can't use Furmark as a sole basis for stability. I have been Furmark stable for 30 minutes, but have found that during games I might get lockups or crashes I wouldn't normally get, and it has to be attributed to an overclock that isn't truly stable. Sure the games run at a lower temp and don't seem quite as demanding, and they run fine 95% of the time, but every so often they'll have a short hiccup or something I wouldn't get if I turned down the overclock.

I haven't used GPU Tool's artifact scanner, I will have to give it a try. OCCT's GPU stress test has an error check, but it notes that the error check reduces GPU heat because of large data transfers required for the error check comparisons.

[NoGuru]

So what program would be the best, or one of the best to use for stability?

[wez]

doesn't msi have a tool that's exactly like furmark?

They do, yes.
But I'm quite confident that AMD didnt have their cards throttle by software (pre 5xxx) once furmark was loaded just for fun. And now a HW implementation with 5xxx.

Just keep that in mind

[muggy]

So what program would be the best, or one of the best to use for stability?

I personally think you just have to try it out in the games you play. I've seen people test by running loops of Crysis or various 3dmark apps.

Furmark is a great tool to test out your overclock initially, just don't say since it passes Furmark your overclock is 100% stable.

[madriddistas]

IDK in other countries but in myne, reference HD5870 is facing out very fast. Now the only reference card left is sapphire and I don't see anybody here using it, maybe there's a reason for it, again IDK

But, I'm hesitating about my interest towards the Lightning since I read at some threads, users were reporting that they don't respond to AB voltage setting and MSI says its a known problem. Sissh!~

[dejanh]

Finally broke Vantage P 32K for two HD5850 cards in CrossFireX I think 33K is out of reach as the overall score, but I do already have 33.35K for GPU only

Not loaded yet to ORB since there seems to be some problem uploading but I have saved the result and will upload shortly.

Edit: http://service.futuremark.com/compare?3dmv=2076969

[Vinas]

Finally broke Vantage P 32K for two HD5850 cards in CrossFireX I think 33K is out of reach as the overall score, but I do already have 33.35K for GPU only

Not loaded yet to ORB since there seems to be some problem uploading but I have saved the result and will upload shortly.

Edit: http://service.futuremark.com/compare?3dmv=2076969

That makes me want to pick up another 5870! With one card I'm just shy of 23k.

[Malik]

First test with my 5870:

[Gimmpy224]

I have speant ALL day looking around for a way to flash the bios on my card (Sapphire 5850) and cant find anything able to work with Window 7 64bit.

Not even the latest ATIflash which claims it does will not.

Anyone have any ideas on what im doing wrong?

I will admit >_> thisll be my first real OC on a card, so please exscuse the newbishness if and when it arises ^_^

[NoGuru]

I have speant ALL day looking around for a way to flash the bios on my card (Sapphire 5850) and cant find anything able to work with Window 7 64bit.

Not even the latest ATIflash which claims it does will not.

Anyone have any ideas on what im doing wrong?

I will admit >_> thisll be my first real OC on a card, so please exscuse the newbishness if and when it arises ^_^

http://www.overclock.net/ati/671675-...5850-bios.html

This is how I did it, and it works great.

[yenclas]

Hello !

I'm Spanish, sorry by my bad English

Yesterday got Sapphier 5850 reference card and today i flashed a modified asus 5850 bios (with up voltage and Mhz).

The problem is that I see 400Mhz on core and 900Mhz on Mem always, when I put in bios to 950Mhz and 1200Mhz.

What is the problem ?

[Gimmpy224]

http://www.overclock.net/ati/671675-...5850-bios.html

This is how I did it, and it works great.

my card isnt a reference card though

[NoGuru]

my card isnt a reference card though

Same principles though for flashing. What BIOS are you trying to flash too?

[muggy]

Is it still possible to increase voltage using RBE? even on non reference cards?

Is there a convinient way of having 2d and overclocked 3d profiles switching as needed and such.

Turns out I was wrong about this, I was confused about the RBE settings. You can use RBE to set your voltage/overclocks as follows:

Go to the Clock Setting tab of RBE and click the "GPU registers" button under Voltage Registers.

Edit the 0x17 voltage to your desired voltage. Be aware that the voltage will round to the nearest allowable voltage. You can check this if you close the GPU register window and reopen it.

Then edit the "Clock Info 00" settings to your overclock settings, but LEAVE THE VOLTAGE ALONE. Just leave it at the default, it should be 1.088V. I had changed this value to my overclock voltage before, and my card would get stuck at 400/900 and wouldn't change.

Flash your card, and your card should clock to 157/300 unless you're running 3d, when it will run your overclock.

If you want to be a little safe about this process, you can first flash just the voltage register and leave the stock clocks, and you can test to make sure your card is properly setting the voltage under stress.

My settings look like this at the moment:

[Gimmpy224]

Same principles though for flashing. What BIOS are you trying to flash too?

I was looking to go with the ASUS bios, but when i pull up catalyst it says "Ati radeon 5800 series [ASUS VH236H]"

just caught my eye last night, wasnt sure what that meant 0,o.

and I thought I read that the non-reference cards cant have the core voltages adjusted

[LuckyX2]

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