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*** Official OMG I've finally got my 5850 thread **

Use at your own risk, but MSI 5850 unlock bios (core/mem = 1500/2250)

MSI_R5850_unlock.A11

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The Fan profile is slightly improved from the default 5850 bios, but voltages remain the same, Not quite sure why the clock limits are so high, Maybe more normal limits removed.
I suppose someone may need them for some extreme stuff ;)
 
nice one the 3 cards arrived at dinner time. 2 are installed in different machines (not crossfired!) and running sweet.
 
is it just me but gpu-z will no longer report the correct speed anymore with this bios and stays stuck at default?
 
Shows what happens if you get up early and do these things, i just flashed mine by mistake with the 5870 bios now i doing that FurMark on stability and the temps are at 68c fan speed on 62% are those temps to high or should i re-flash with a 5850 bios ?
 
Greebo said:
Well 1050/1300 is my max overclock, here's the lastest vantage score :D
Click to expand...

I thought you were stuck at 950 or something. What vcore has it needed to go over 1000?

Not quite the same without you 260 in there though. Did I see you sell it in the MM, I thought you'd keep it?

Jabbs said:
Shows what happens if you get up early and do these things, i just flashed mine by mistake with the 5870 bios now i doing that FurMark on stability and the temps are at 68c fan speed on 62% are those temps to high or should i re-flash with a 5850 bios ?
Click to expand...

I've removed the links to 5870 bios' now from the OP as this is a thread about 5850s.
 
I can't make out if this is flashed with the 5870 or not now i took the bios link from this post

Martini1991 said:
Ok, this works. Just follow the guide, written in my own words, albiet I take no credit for this.

Here's a picture of my flashed Sapphire 5870 to an Asus
Pic.png


With the Asus BIOS, I'm able to use just the MSI tool to increase clocks over 900/1300.. I've heard that AMD GPU Tool will mess with the memory timings, so I'd advise NOT to use it.

Here is the ASUS BIOS
http://rapidshare.com/files/288531683/Asus.rom

Here's the latest ATIflash

http://www.techpowerup.com/downloads/1650/ATIFlash_3.75.html

Here's the tool to format a USB flash drive
http://www.techpowerup.com/forums/attachment.php?attachmentid=18807&d=1222699942

Here's the bootfiles I used
http://www.4shared.com/file/43544416/39060a9e/HPUSBFW_BOOTFILES.html?s=1 (Extract them, then make a folder called BOOTFILES, stick the extracted files into the folder)

Plug in the USB drive that you want to use.

Install and run HP USB Disk Storage Format Tool.
Select the USB Drive. In the "File system" drop down box, pick FAT32. Tick "Quick Format". Tick "Create a DOS startup disk, using DOS system files located at and click the "..." and direct it to the BOOTFILES folder you made.
Click start.

Once that's done, copy the ATI Flash and ASUS BIOS into the USB drive.

Restart your PC and boot from the USB Flash drive.

Once it's booted in type
atiflash -f -p 0 asus.rom (If you're not using crossfire)

If you're using crossfire, I'd suggest you flash each card individually (For people like Virus). More so that I don't know how to flash more than one card at once :p

Good luck
Click to expand...

Now in CCC its got 850/1200 for gpu/ram but when i run gpuz for example it still says 1440 for shaders so not sure now.
 
Jabbs said:
I can't make out if this is flashed with the 5870 or not now i took the bios link from this post



Now in CCC its got 850/1200 for gpu/ram but when i run gpuz for example it still says 1440 for shaders so not sure now.
Click to expand...

It's for the 5870.

I have a Sapphire 5870. Flashed with an ASUS BIOS.
 
What should i do flash it back to a 5850 ? but why in gpuz does it still say 1440 shaders shouldn't that say 1600 ?
 
wolvers69 said:
I thought you were stuck at 950 or something. What vcore has it needed to go over 1000?

Not quite the same without you 260 in there though. Did I see you sell it in the MM, I thought you'd keep it?

.
Click to expand...
EK full waterblock. Need 1.25v for 1000 stability. Max clock so far now is 1070/1300.

Decided it was silly to have a watercooled gtx260 as a physx card so sold it in MM. Plus having the gtx260 card installed made my 4.6Ghz cpu overclock unstable and I could only run at 4Ghz.
 
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Just to add... I've updated my sapphire 5850 with this MSI unlocked bios, it works absolutely fine. I've since set afterburner to 1.25v, gpu>950Mhz and memory>1225Mhz.

Ran furmark for 15mins to get it up to full temp, tried a couple of loops of crysis benchmark too, everything is stable, very happy, not even gonna bother tweaking with more volts these clocks will do me just fine :)
 
Ah right after doing some research i thought the only differences was the core/memory speed but its not i see.
 
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