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New Bios update for gigabyte HD7950 ! - Page 75

post #741 of 1324
Can you send me a link to download? i searched on that topic, but i can't see any link, im new on this site, and i reach here because a search on google for solution to undervolt my vga.

please share a little of your knowledge with a noob
post #742 of 1324
see post 724 attachment zip file.
fz0 fz1 interchangeable
fy0fy1, fx0 fx1 same thing, just updates

http://www.overclock.net/t/1313813/new-bios-update-for-gigabyte-hd7950/724#post_19977620
post #743 of 1324
Is there anyone who could change the Boot power state settings of "GPU: 900 MHz, Memory: 1250 MHz (Boot)" to the following State 4 Settings "GPU: 300 MHz, Memory: 150 MHz (State 4)" on the F43 Bios ??.

I ask this, as i have noticed that it is using the 3D power state while you are in DOS, so the cards heat up very quickly, also is there a way to force the fans to run @60% in the bios while in DOS ??

Thankyou,

aPoPhus

PS: It would be highly appreciated if some one could do this to the standard F43 Bios for me smile.gif
Edited by aPoPhus - 5/20/13 at 9:26am
post #744 of 1324
I don't think I can change the dos speed without affecting the windows 3d speed... I'll look deeper,

do you know exactly what the dos speed is??? how can we check what speed/volts are used in dos??
post #745 of 1324
Quote:
Originally Posted by robnitro View Post

I don't think I can change the dos speed without affecting the windows 3d speed... I'll look deeper,

do you know exactly what the dos speed is??? how can we check what speed/volts are used in dos??

I dont know exactly what the dos speed is, nor do i know of a way to test it while in dos, but i can tell you, that my card gets very hot to the touch after 10 minutes in dos, the fans look to be at about 10% fan speed & dont spin up higher.

Also in windows, my Aida64 Exteme monitor lists 4 Ati Power States as Follows:

Ati PowerPlay (BIOS)

State #1 GPU: 900 MHz, Memory: 1250 MHz (Boot) <----

State #2 GPU: 900 MHz, Memory: 1250 MHz

State #3 GPU: 900 MHz, Memory: 1250 MHz (UVD)

State #4 GPU: 300 MHz, Memory: 150 MHz

So from what i see there, is that it is running full speed & volts at boot time, let me know what you think ?

I am hoping that these 4 stats can be found in the bios & the (boot) state clocks changed to the same as the clocks in state 4, because to my way of thinking, if the clocks are that low then hopefully the voltage will be less thus keeping the card cooler.

It would also be nice if we could force the fans to run at 60% while in dos too, but i have no idea if that can be done, sorry, but im no good with hacking bios's

Anyway, let me know what you find & thankyou,

aPoPhus
Edited by aPoPhus - 5/21/13 at 2:51am
post #746 of 1324
UVD looks incorrect.... its 500/1250...check while playing hw accel youtube or vlc.
So far no luck...ill look at another bios that has different clocks to compare.

BTW whenever I have the card detected as vga card (no ati drivers) in windows, it registers as 500 mhz on hwinfo64

Not sure why 500
post #747 of 1324
Quote:
Originally Posted by robnitro View Post

UVD looks incorrect.... its 500/1250...check while playing hw accel youtube or vlc.
So far no luck...ill look at another bios that has different clocks to compare.

BTW whenever I have the card detected as vga card (no ati drivers) in windows, it registers as 500 mhz on hwinfo64

Not sure why 500

I checked the clocks & yes your right, it is 500 mhz & 1250 mhz while playing a youtube video.

Very strange that it doesn't tally up with the power state that i posted for UVD :S
post #748 of 1324
I did a comparison using rbe on a 5870 to mod state 0-boot and the older cards seem to have a different structure to bios.

Plus, as 3d voltage is tied to boot, really cant save much heat even if we clock down. example: youtube uvd 500mhz/0.95v,2a @12v vrm in. If I run clock lower or higher...at same volts, same 2a load @12v.

Voltage, not clocks determines power use when idle or low load.

Same goes for 3d gaming...nfs shift2 60% use at 1100: 8a @ 1.18v. 900(70%load): 8a@1.18v. but 900mhz @ 1.093v: 6amps!

Voltage directly related to load at the square of it. p=e(squared)/r.
p-power e-voltage r-resistance(constant-based on load)
post #749 of 1324
Quote:
Originally Posted by robnitro View Post

I did a comparison using rbe on a 5870 to mod state 0-boot and the older cards seem to have a different structure to bios.

Plus, as 3d voltage is tied to boot, really cant save much heat even if we clock down. example: youtube uvd 500mhz/0.95v,2a @12v vrm in. If I run clock lower or higher...at same volts, same 2a load @12v.

Voltage, not clocks determines power use when idle or low load.

Same goes for 3d gaming...nfs shift2 60% use at 1100: 8a @ 1.18v. 900(70%load): 8a@1.18v. but 900mhz @ 1.093v: 6amps!

Voltage directly related to load at the square of it. p=e(squared)/r.
p-power e-voltage r-resistance(constant-based on load)

Ok, Thankyou for trying, guess im gonna have to live with it :/
post #750 of 1324
Yeah, sorry.
If only they did powertune that drops clock/volts under low load, like intel speedstep/c1e does.

Powertune as it is only drops clock to keep power under a certain wattage(like in occt or afterburner). In the case of boost bioses, there is a non boost state that the card uses if the clock drops to that mhz (usually 850 or 900), which also has a lower voltage.

Thats why I made state 2 995 mhz@1.088v
(in my fz1 modded bios) so that any pt throttle below 995, uses that-much less power use for same fps in occt testing.

In real world only some games stress the card that hard like crysis, metro.
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