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AMD release HD 7970 Ghz bios upgrade for Reference HD 7970 !! - Page 35

post #341 of 390
Quote:
Originally Posted by Falkentyne View Post

1.25v? Mine is 1.187v (vs 1.175v on the original stock bios). Also a sapphire reference card bought on day 1 of release.
CCC and GPU info *think* Its 1.25v (1.256v) but Troxx correctly shows 1.187v, and GPU-Z shows it realtime as about 1.170v sensor if there is no GPU load on the card when its at boost speed. (The 1000 mhz "non boost" voltage (1000/1500 setting) is 1.131v; which older Trixx pre 4.4 beta thought was the full 3d voltage on ghz cards so you couldn't really use that).

Why is it enforcing 1.187v when the CCC (bios?) thinks its 1.256v? (unlocked of course)
The CCC Tries to send 1.256v in the overdrive XML file, but the Trixx slider has it 1.187v.
Changing the voltage doesn't seem to do much except make the card run much hotter. Gputook will show artfiacts counts at 1150 mhz if the temp exceeds 90C.
At 1200 mhz, the artifacts start at 74C. Raising the voltage just makes 74C happen faster. Lowering it can cause a driver recovery. (1150 mhz @ 1.150v will cause BF3 to VPU recover and crash). 1150 is my reasonable max limit and is nice and stable if I keep the temps down (85C or lower with the 1.187v). 1200 mhz is possible in older games, but the FPS boost is like 4 FPS in something like Path of Exile...not worth it.

Despite the core maxing out at 1150'ish, Memory overclocks quite well (without dropping performance; tested in Valley benchmark) to 1700 mhz.

ASIC is 74%.

About the Asus:
I saw posts awhile back saying that vdroop is less on the Asus Bios, but I don't know if anyone has actually compared a flashed asus bios to the stock for vdroop....


Vdroop cannot be controlled w/o a hard mod. That or you need a Matrix which has built-in llc control.


The ghz bios doesn't work properly in all cases and often you lose voltage control. Hence:

Quote:
frankly I don't see a point in anyone flashing to it or buying it pre-flashed either.
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post #342 of 390
Thanks for that information. That explains it quite well. I saw a post about the Matrix (forgot where) saying Asus had better vdroop through the Bios, but since you explained its controlled by the hardware, that settles that. So you would need to do a resistor mod of some sort to remove the vdroop (as I think was shown on a forum a year ago where people were pushing the cards to 1500 mhz on sub zero).

I guess I got "lucky" since my card went from 1.175v to 1.187v, which is a much smaller change, and is still unlocked. I also haven't lost any (or gained any) OC ability from the ghz Bios (Yes I flashed with the original AMD exe program)

Many of the cards had a black screen+100% fan lockup in 2D (especially when browsing) or when switching from 3D to 2D which started with the 12.6-12.7 drivers, and the 2D core voltage had been changed from 0.850 to 0.804-0.792. I think those problems were resolved in later drivers (NOT the 12.7's) but flashing the ghz edition EXE flasher put my 2D voltage back to 0.850v on 12.6+ and gave me higher range in the CCC so I could use 1150/1700 without needing to run Trixx (which at the time didn't even support changing the boost voltage on ghz cards).

What I really want to know is why the ghz edition Bios requests 1.256 to the drivers, but the actual target voltage people have are all over the place (some actually have 1.256v target, and some are like mine with 1.187v or lower)....

And yes I still have full voltage control; went up to 1.275v but doesn't change the max overclocks at all on reasonable testing on air (probably needs water cooling or better to test that), but yep it does change, gpu-z shows the load voltage much higher, and massive temps (1.275v ->vdroop->1.200 or around there)
Edited by Falkentyne - 2/25/13 at 8:26pm
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post #343 of 390
I tried GHz Bios many times and it a bad idea. In some games even OCed its would drop to 1000MHz. The Unlocked Bios is better.
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post #344 of 390
Quote:
Originally Posted by ZealotKi11er View Post

I tried GHz Bios many times and it a bad idea. In some games even OCed its would drop to 1000MHz. The Unlocked Bios is better.

A simple profile creation of the overdrive page, then a copy of that profile (for toggling) and an edit can disable/enable powrtune and keep the card locked at 3d speeds at all times. (instructions and a link are in the 13.2 driver thread). This also works for the non boost cards, to stop the GPU from going from 3d speeds to 500 mhz or even to 300 in some games with extremely low load levels.
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post #345 of 390
Quote:
Originally Posted by Falkentyne View Post

1.25v? Mine is 1.187v (vs 1.175v on the original stock bios). Also a sapphire reference card bought on day 1 of release.
CCC and GPU info *think* Its 1.25v (1.256v) but Troxx correctly shows 1.187v, and GPU-Z shows it realtime as about 1.170v sensor if there is no GPU load on the card when its at boost speed. (The 1000 mhz "non boost" voltage (1000/1500 setting) is 1.131v; which older Trixx pre 4.4 beta thought was the full 3d voltage on ghz cards so you couldn't really use that).

Why is it enforcing 1.187v when the CCC (bios?) thinks its 1.256v? (unlocked of course)
The CCC Tries to send 1.256v in the overdrive XML file, but the Trixx slider has it 1.187v.
Changing the voltage doesn't seem to do much except make the card run much hotter. Gputook will show artfiacts counts at 1150 mhz if the temp exceeds 90C.
At 1200 mhz, the artifacts start at 74C. Raising the voltage just makes 74C happen faster. Lowering it can cause a driver recovery. (1150 mhz @ 1.150v will cause BF3 to VPU recover and crash). 1150 is my reasonable max limit and is nice and stable if I keep the temps down (85C or lower with the 1.187v). 1200 mhz is possible in older games, but the FPS boost is like 4 FPS in something like Path of Exile...not worth it.

I'm putting this block under water so heat shouldn't be an issue. I thought some people had GHZ bios with voltage unlocked? I'm just trying to figure out which allows for better over clocking.
post #346 of 390
How do i get my stock back again on the Asus HD7970-3GD5 ? This Bios making my VGA card going down all time if i start a game. No backup of the old bios :-(
post #347 of 390
Quote:
Originally Posted by McJanDK View Post

How do i get my stock back again on the Asus HD7970-3GD5 ? This Bios making my VGA card going down all time if i start a game. No backup of the old bios :-(


GPU BIOS Collection


You'll have to locate your Type of Card

Can you tell me which card you are using?
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post #348 of 390
ASUS HD7970-3GD5... Please help sadsmiley.gif

EDIT:

Now i try to flash my HD7970 Bios from the site and the GPU card died.. I fund out that on the GPU card is a switch fra 1 to 2 end after switching it to 2 it works again by stock bios. How do i save my BIOS 1 that is damage now ?
Edited by McJanDK - 3/18/13 at 9:11am
post #349 of 390
Tutorial How to Flash ATI Bios using ATIWinFlash

Quote:
Originally Posted by KaRLiToS View Post


Lets say your borked your BIOS flashing and the BIOS #1 is now corrupted and you can't boot into windows using that BIOS

-Turn Off PC
-Put the swtich back to BIOS #2
-You restart PC running "Locked" BIOS (#2)
-Under Windows: You flip the GPU Bios switch back to #1
-Proceed to a normal flashing of the BIOS
-BIOS#1 is now repaired

thumb.gif
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post #350 of 390
Quote:
Originally Posted by tsm106 View Post


The ghz bios doesn't work properly in all cases and often you lose voltage control. Hence:

Good to know.
I got the Sapphire 7950 OC edition (900 mhz) with BIOS VER015.013.000.010.000705

Would it maybe be worthwhile to update the BIOS to the ''OC 950 MHz Edition'' (VER015.021.000.000.000000)
That way I got a higher stock clock ofcourse.
Maybe anyone already tried this?
Thanks for the info/advice !
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