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What program can overclock and overvolt sapphire xtreme 5850's? Sapphire Trixx can adjust the voltage but only works for the first 5850, and it is hit and miss on overclocking both of them.

get the AMD GPU clocking tool (not CCC)

also id go with like 890/300 as a modest overclock, no risk to your vram

you can go to 950 core with no voltage adjustment.

The most I can do is 880 core with the voltage upped a bit (not at home right now so I can't say for sure how much) and memory at 300. If I go any higher than that the computer locks up if the miner is running and I do anything else but mine. If no one is going to use the computer (it's my wifes machine) I can run at 940 core stable with the voltage at 1.193 and it gets about 375 Mhash/sec. It runs at 74 degrees with a custom fan profile that puts the fan at 64% at that temp. The case sucks so I expect with good airflow it should be even lower.

I have to stop the miner before touching anything else on the machine or it will freeze. I've had it running for days on that setting and had no problems as long as the miner is stopped and the card is turned down before using the machine.

I use Sapphire TriXX to overclock.

As if every card can do this.... right.... I have mine @ 850Mhz right now.  860Mhz and the display driver crashes after a couple hours.

I thought AMD GPU clock can't adjust voltages?


Are you using trixx with 2 cards? If so how? I can't apply the voltage for both with trixx.

If you want to adjust multiple cards using trixx just select the option to "apply overclocking profile to all similar cards" or whatever the option is called (I don't use trixx but I remember that option when I tried it).

EDIT: Found it, Under settings "Synchronize cards in Multi-GPU config"

Sure, if you want your PC to crash once you start mining.

Actually one of my 6 Sapphire cards can do 955ish on stock 24/7 when mining, generally cards are stable on a lot higher frequencies when mining than if you tested anything else, for example that very card cant even handle flash video above 900. Saying that tho 4 other cards are in the 850-890 range for mining while I have one useless card that cant do above 825 under any circumstances even when you raise the voltage, all about luck :/

not all cards are the same, just like some cpu batches are better than others, the same applies to video cards, my 5850 mines at 935 core with no voltage adjustment at all and stays around 60°, mine crashes at 950, but it's not beyond the realm of possibility that some cards may be able to do this at stock voltages...

The AMD tool adjusts the voltage for you, mine is set at 1.180 with 890/300 clock

Although it will only do it withing some allowable range, my XFX cards wont go as high

I recommend using MSI Afterburner with the extreme oveerclocking mode enabled
Guide on how to unlock ASI Afterburner http://bitclockers.com/forums/index.php?topic=5.msg6#msg6 (http://bitclockers.com/forums/index.php?topic=5.msg6#msg6)

Afterburner can't adjust voltages on most AMD cards FYI....

Depends on the reference/non-reference VRM design

I have 3 of them in my farm, mostly using 6xxx series cards.

I run them at a 10% overclock with no added voltage.

The VRM is significantly stressed in an exponential curve the more voltage you add.
The incurred heat will be unsustainable in the long term (6+ months of 24/7 usage) if using clocks such as 1000mhz at the maximum voltage needed for stability. They will statistically start failing faster as you add more and more mV.

Lowering memory clocks is one way to burden the card less, but is not a free pass for using massive (20-30%) overclocks.
But those doing this at their own risk and claiming there is no danger should re-think whether stability over time is more important than relatively miniscule gains in mhash/s (for example, I am not willing to risk 25% larger risk of card fatality for 40mhash/s extra).

Hmm I was under the impression afterburner didn't work with the sapphire xtreme 5850's. I'll give it a shot, I use afterburner for my dual 5870's and it works great.

I'll also give AMD GPU clock a shot like the others have mentioned.

Sapphire Trixx software can natively tweak the voltage. It was just recently updated to support the xtreme cards.
Download link is below.

http://www.sapphiretech.com/ssc/TriXX/

It can also set fan profile curves.

I have dual 5830s, the same xtreme cards, mine will do 950 on stock voltage. I know these things have crazy overclocking potential, I just can't get the voltage on the second card to change. Trixx doesn't work on the second card, it's only changing the voltage on the first card.

AMD GPU clock tool won't work either. Says no valid device found.

See link above, it's an official tool made by Sapphire themselves.

I am starting to hate Sapphire. My Sapphire HD 5830 xtreme is way hotter than my XFX HD 5830.
XFX makes manufactures better in my opinion, but I could be wrong.

RE: The overclocking tool, MSI Afterburner has trouble with the Sapphire cards, Trixx should work.

If it won't let you adjust the second card, try swapping the monitor to the card that you want to adjust, then re-opening TriXX.

no dice on the swapping the monitor trick, anyone have any other ideas on how to make trixx apply setting to multiple cards?

there is an option that says: "synchronize gpu in multi... "

for some people it seems to work, for me it does not, thoug i think its because i am not using CF bridge. can someone confirm that ?

I could not get it to work either. with or without crossfire. with more than two 5850s crossfire is not possible anyway.

the only way I can think of that might work is to use RBE to modify the voltage in the bios.

The monitor swapping trick works for me for MSI Afterburner, it can only access the card that the monitor is plugged into. (Phoenix will only recognize the GPU the monitor is plugged into as well when it's starting up.  After it's running you can swap monitors and it will keep running)

I think that's why people use Dummy Plugs.

I'm only able to adjust voltage on 1 card as well.  Any suggestions?

I have monitors plugged into HDMI on both cards...

Got 3 sapphire hd5850 xtreme running in my system. Trixx isn't working for me either, it just adjust the settings of one gpu (got dummy plugs in all of em!). Got RAM @ 500 with MSI Afterburner and GPU @ 790, getting a constant 309-310 Mh/s (11.2 SDK 2.3). Temp is kinda bad, 80°C on all GPU's with 80% Fan Speed. Can get GPU to 900 with MSI Afterburner but it's crashing after ~5 minutes. Unlockign MSI Afterburner didn't do anything too. Space on the mb is limited, i'm going to replace the heatsink with a setsugen 2 - should be a lil smaller then the ref heatsink. Hope the Setsugen 2 will handle the temp problem although I don't get any advantage of it since I can't OC the GPU to it's full potential. Would be nice to adjust the voltage somehow.

There is no point for you to OC more, as your temps are high as is.  Keep things how they are, or lower your temps before trying to OC further.

My 2x 5850's run @ 60C @ 845Mhz.  I just can't find how to overvolt more than one card.

If anyone can figure this out, I will tip them.  Thanks.

Yes, right, thats why I'll get that Setsugen 2 to handle the temps. I'm not trying to OC any more, yet. Do u have an Sapphire 5850 xtreme too? What heatsink do u use to get 60°C?

can't run my cards above ~830.

or they will crash the OS.

overvolt allow for near 1000mhz but can't change more than one card with trixx

Stock Saphire Xtreme heatshink.  Cards have a space between them in the case (which makes a huge difference, compared to cards that are back to back).  Fan speed is locked @ 70%.

Mine are back to back just a really small space in between. The Setsugen 2 is a lil smaller so this will already give them about 4-5 millimeters more of space. But for now the Setsugen 2 just will be a benefit for my ears and the lifetime of the GPU as there isn't any way to OC that card with multi-gpu yet.

I hope no one tries flashing a modded bios to these, I did and all it did was enable ULPS mode and it wouldn't disable until I flashed the old bios back.

I sent in a support ticket to sapphire today trying to get an answer about this, it's pretty annoying not being able to overclock these things properly. My cards will do 975 at stock volts, but I know they could handle over 1050mhz with voltage control.

Wow, consider yourself lucky.  I get crashed display drivers past 845Mhz @ stock volts on mine.

Kill Catalyst Control Center Task and delete it from autostart (msconfig). Restart MSI Afterburner after that. Im still not able to adjust Core Voltage but at least I'm able to clock the memory down to 250 now (and core up to 1165). About 10°C lower temps now!

So I played around with it today. To remind everyone, I have two sapphire xtreme 5850's in one system. I tried it in crossfire and with a dummy plug, currently I'm running with a dummy plug.

I COULD NOT adjust voltage on the second card. I tried swapping monitors but still couldn't. I tried afterburner and even after unlocking overclocking and voltage control I couldn't modify voltage for either card. I used the latest TRIXX and I was able to modify the FIRST card's voltage (though strangley the voltage did NOT show up in GPUZ, but the voltage was definitley altered because I could never run that card at 980MHz on stock voltage). I modified the first card's clocks and voltages to 980/200 and 1.156v through TRIXX. The second card was tricky, I had to turn off all mining, clear out afterburner's profiles, load it up and then I could change it to 880/200 at stock voltage (since I can't modify its voltage).

That's a big improvement, but I still want to modify the voltage on the second card. I could squeeze a lot more out of that beast. I'm only pulling 430w at the wall with this config anyways.

I tried what Clavulanic did with my 2 Sapphire 5830's and I can only change my first card's memory down to 300 using TriXX.
I can't change my second card's Memory to 300 at all...?

Catalyst has been removed from Windows Startup in msconfig.

I've deleted the MSI Afterburner profiles from
C:\Program Files (x86)\MSI Afterburner\Profiles\

Reloading MSI and changing the settings on the second video card does nothing.  It won't go below 900 for Memory.

Note that Trixx has issues overclocking both cards that arent in CrossFire

MSI Afterburner does this, but lacks overvolting control with the Sapphire 5830's

I'v been using ATI Tray Tool, and its been working well for me.
I run my Sapphire 5830's at 1000/300 on Stock voltage 1.163 no problem, I had to put two 120mm Fans on top of a pair of cards to keep the heat below 65C

I was able to overvolt a single card with Trixx, but the second wouldn't, assuming it was the lack of XFire issue.

I'm able to push the card up to 1022 on stock Voltage 1023 is the hardlock point. Being that the PCB of the 5830 and the 5870 are similar, from my research the card should be able to be overvolted safely to 1.25v.

I pushed one to 1092/315 achieving 346Mhash/s <--- if anyone wants to say i'm FOS, i'll email some SS's :)

Hope this helps :-)

it doest work...

I have 3 sapphire 5850 cards, one of then gets to 850 stable, other 840 and one cant get past 800 on stock volts.

The best i could do is flash these cards with those clocks so i dont have to depend on any other software to oc these to that level.

Any attempt to overvolt it over the maximum allowed in the table (1.088v) it will lock the card intro a 400/900 mode. There no way to avoid this, even bios flashing dont work at all for overvolting. No AMD gpu clock tool, or ati tray tools helps.

Only Trixx can overvolt them and it only works at the card tagged as first device.

using "apply oc settings to similar cards in multigpu" does not work either, it seems to work only in CF mode. Im using a M2N4-SLI, so no CF cookie for me :(