• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

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

Yeah, that's what I need to do.

Possible fix for voltage tweaking has been posted on the G3D forum. Can I post the link here?
 
Looks like the 5850 still needs that bios with higher CCC limits. Although if I had a 5850, I'd be cautious flashing any MSI bios if what Unwinder says about non reference VT1165 addresses on the MSI sample is true.
 
Well it appears to work on the Sapphire bios! :D

The only issue I have now is that when I install GPU clock tool it sets the voltage to 1.6!! :eek:
 
fornowagain said:
Looks like the 5850 still needs that bios with higher CCC limits. Although if I had a 5850, I'd be cautious flashing any MSI bios if what Unwinder says about non reference VT1165 addresses on the MSI sample is true.
Click to expand...

I did run afterburner and Gputool at the same time before, You have to run Gputool first, I was just using it for fan control Maybe voltage control will not work but worth a try
 
5850overvolt.jpg
 
Epic win, I just plugged my screen in via the HDMI port on the back of the card and WAYHEY it works again! No more carpy VGA, awesomeness!! Guess the dongle I was using before must have been do-da'ed, I dunno.
 
HWmonitor says the voltage is unchanged. Core temp has risen a little though. Dunno.
 
Last edited:
wolvers69 said:
Well it appears to work on the Sapphire bios! :D

The only issue I have now is that when I install GPU clock tool it sets the voltage to 1.6!! :eek:
Click to expand...

Lol yeah I've seen that before, just as well it can't be overvolted through software.

http://blogs.amd.com/play/2009/09/2...ies-graphics-cards-designed-by-the-community/
With the ATI Radeon HD 5800 series we’ve implemented a hardware-level overvolt protection scheme where a signal from the regulators can be fed into the GPU directly and the GPU can take action if the regulators indicate they are operating out of their specification. In the unlikely event that such a scenario happens, rather than the board turning off, the GPU is designed to clock down to get the regulators back into a normal operating zone and then clock back up when they have done so.
Click to expand...

wolvers69 said:
HWmonitor says the voltage is unchanged. Core temp has risen a little though. Dunno.
Click to expand...
The only sure way to tell is when you increase voltages you should see a corresponding current load increase, eventually you'll hit the over voltage limit. Below is an 4870x2 plot, increasing the set voltage has no effect after 1.37v. You're flying blind until you can get the VDDC values from GPU-Z or Rivatuner, unless you have a multimeter?

cmd9.jpg
 
Last edited:
Very Interesting, That reads to me as all, So why does the 5870's seem ok afterburner but not 5850's, Maybe that Asus bios is more than people think ;)
 
JAKUS said:
Very Interesting, That reads to me as all, So why does the 5870's seem ok afterburner but not 5850's, Maybe that Asus bios is more than people think ;)
Click to expand...

Works for me. Added the settings thing in the link and msi afterburner works fine.

Guess it was a small glitch between the 5870 and the 5850 in the software.
 
Greebo, did you set the clocks with GPU tool?

Unwinder, the guy who posted that setting, I think might be the author of Rivatuner. Is seems Rivatuner is immune to the clock limit.

After that we add the Device ID of the Radeon HD 5850 to the Rivatuner.cfg to make the Rivatuner 2.24c compatible to the new graphics card. This allows us to increase the frequencies to higher values than in the Overdrive menu. Our Radeon HD 5850s were stable up to 830/2400 MHz, which is almost as much as the bigger HD 5870 is running at.
Click to expand...

http://www.pcgameshardware.com/aid,...viewed-The-DirectX-11-bargain/Reviews/?page=4
 
Yeah set voltage in MSi and clock speeds in GPU tool.

A pain but it works.

Need a watercooling blcok now as the card keeps overheating at 1050 and crashing out of vantage :(

I could put the fan on 100% but my gf would kill me :(
 
Send the GF down the pub and get that fan on 100%!! :D

I think I could keep the core cool enough but not the VRMs. I'll stick a fan on them tomorrow and give it a go.
 
So by flashing the HD5850 with a HD5870's BIOS file you are effectively tricking the card into thinking it's a HD5870? Does this unlock any extra processors (5870=1600 5840=1440) or just it just increase the maximum clock rate?
 
You must log in or register to reply here.
Back
Top Bottom