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

[wolvers]

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?

No we haven't flashed any bios', just edited the config of afterburner to enable the voltage control to work.

To modify the database to make it use your card settings try to close Afterburner, open your profile file with notepad (VEN_1002&DEV_6899&SUBSYS_0B001002&REV_00&BUS_1&DE V_0&FN_0.cfg stored into .\Profiles subfolder into application folder), and add the following text to it:

[Settings]
VT1165_Defaults = 17 33

Then start Afterburner again and see if it helps. It is important to add that if you have UAC enabled, then you must temporarily disable it prior to editing the file.

 

[fornowagain]

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?

Not at all, good chance that would just brick it. No ones is suggesting flashing a 5870 to a 5850. Just bios' from different OEMs, but the same reference card.

 

[Greebo]

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?

No flash as all. Just adding a setting to the config file in MSI, setting the voltage in MSI and the overclock core/ram in GPU tool

 

[Greebo]

Seems like yet again I haven;t bought the best overclocking card

Max so far is 970/1200 at 1.2v. Even with 1.35v my card bombs straight away at 1000 so doubt its heat.

Still here's my new Vantage score



http://service.futuremark.com/compare?3dmv=1485809

 

[milkamil]

My 5850 @ 1000/1100 1.25V

 

[wolvers]

Greebo and milkamil, what's the max VDDC temps that you are getting with 1.2/1.25v?

 

[Greebo]

Greebo and milkamil, what's the max VDDC temps that you are getting with 1.2/1.25v?

How can i monitor that? GPU-Z?

 

[Greebo]

Snip

Dam I have got a bad card. My temps max out at 85C compared to your 66C

 

[gareth170]

there must be a max safe voltage/temp for these 5850's?

 

[RavenXXX2]

You got your fan set to 61%? coz he has.

 

[milkamil]

Greebo and milkamil, what's the max VDDC temps that you are getting with 1.2/1.25v?

As above, how can I monitor it? Is it one of the "GPU Temp #" in GPU-Z? If so, #1 and #3 is always the same as GPU Temperature, while #2 is 2-3 above.


Greebo
I set my fan at 61% just in case But I can't stand how loud it is... I need to think about WC in few months.

 

[Jakus]

I would be very surprised if much over 50-60% fan would increase cooling as I feel the cooler design regarding the restricted exhaust is going to be limiting....I have not tested it's a just a gut feeling, so I would not assume more speed = more cooling after optimum

I'm sure someone will check it out

 

[wolvers]

How can i monitor that? GPU-Z?

It's on the Thermal sensors page of GPU tool. Enable reading on all the VDDCs and click start.

Getting a good boost in fps going to 900core with 1.2v and only seeing 41C. VDDC cooling needs improving though before I can go any higher.

 

[gareth170]

My 5850 @ 1000/1000 1.25V.. max core temp was 59c. max vrm temp was 54c



is the vrm temp safe at 54c?

 

[wolvers]

is the vrm temp safe at 54c?

Yeah, fine. That's a good clocking card you have there.

 

[gareth170]

a word of warning,

sometimes the voltage jumps to 1.6v+ by it self

a new bios will hopefully fix this.

so just be careful

 

[Jakus]

Ok Guys, I want to give this a try, are we editing Afterburner profiles or Ati Ace profiles, that instruction Looks clear as mud to Me !

 

[fornowagain]

a word of warning,

sometimes the voltage jumps to 1.6v+ by it self

a new bios will hopefully fix this.

so just be careful

As I said a few posts back, you absolutely positively cannot overvolt the card. It wont let you.

 

[gareth170]

As I said a few posts back, you absolutely positively cannot overvolt the card. It wont let you.

well if u close MSI Afterburner after setting the voltage, it seems fine so far...

 

[fornowagain]

The overvoltage protection is hardware based. Nothing you do in software can make it rise too high. I've tried. Same thing on the 4870x2, all checked with DMM. The only way to get higher voltages is a hard mod.