This vbios was Extracted from a Medion Akoya X7811 (french edition) which is a notebook based on the same chassis as the 1727 whitebook, and the GX740, which is why I'm posting this here.
This vbios is the most recent that you will find at the moment for the HD5870 mobility, and it works flawlessly with all the catalyst center options (powerplay, overdrive, etc.)
Many people have tested it in germany on their X7811 since @tilla told them about it. They had no issue so far and were able to undervolt their GPU and thus gain quite a few degrees.
My current voltage settings are 0.8V on idle and 0.95V on load. I still have to understand why on sector while idle, I'm still getting 0.9V instead of 0.8V, but I think reinstalling ccc will figure this out.
So anyways. Here's a tutorial on how to edit an ATI bios, and then how to flash it on your machine :
techPowerUp! :: Tutorial on how to use RBE (Radeon BIOS Editor)
This is a tutorial that will explain how to overclock, but you can undervolt just the same way.
Here's the bios info :
Imageshack - biosinfo.jpg
Here's the default settings :
Imageshack - defaultvd.jpg
And my current settings :
Imageshack - currentsettings
4minute Furmark stability test @ 0.95V :
Imageshack - furmark82.jpg
1minute Furmark bench O/C to 740/1000 @ 0.95V with CCC overdrive :
Imageshack - 7401000bench.jpg
Pm me if you want to have this bios, I'll give you the link for it.
If I have missed something or if you would like to have more info on this, more tests or anything, I will try my best to fix my OP
Update : After uninstalling ccc and cleaning registry with ccleaner + reboot, everything is working fine. 405/1000 @ 0.8 on idle, switches to 700/1000 @ 0.95 on load (yes, without powerplay, don't ask me how !!!) and switches to 300/400 @ 0.8 on battery, still with no powerplay. I will install catalyst again and see what happens then
Reply 1 : New 1727 / GX740 / Medion Akoya X7811 Vbios ! PowerPlay, Overdrive, etc. all working
Reply 2 : New 1727 / GX740 / Medion Akoya X7811 Vbios ! PowerPlay, Overdrive, etc. all working
Reply 3 : New 1727 / GX740 / Medion Akoya X7811 Vbios ! PowerPlay, Overdrive, etc. all working
Reply 4 : New 1727 / GX740 / Medion Akoya X7811 Vbios ! PowerPlay, Overdrive, etc. all working
Reply 5 : New 1727 / GX740 / Medion Akoya X7811 Vbios ! PowerPlay, Overdrive, etc. all working
Please tell us more about what you did and what happened.
Reply 6 : New 1727 / GX740 / Medion Akoya X7811 Vbios ! PowerPlay, Overdrive, etc. all working
Reply 7 : New 1727 / GX740 / Medion Akoya X7811 Vbios ! PowerPlay, Overdrive, etc. all working
Reply 8 : New 1727 / GX740 / Medion Akoya X7811 Vbios ! PowerPlay, Overdrive, etc. all working
Good post OP..
Reply 9 : New 1727 / GX740 / Medion Akoya X7811 Vbios ! PowerPlay, Overdrive, etc. all working
Not getting much feedback but heh, maybe you guys don't need it after all.
I should update with my new current settings when I get some time, currently running O/C to 740/1100 stable, I'm pretty happy with that
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