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7950 bios flash

Joined
2 Aug 2014
Posts
2,029
Location
Watford
im looking at to flash my card to unlock the voltage, i found a bios which is unlocked i think but not to sure, so looking for your input
i have edited the bios to what i would like but not sure if i done it right

thanks

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i cannot see my vrm temps but i do have a fan on both sides of them

so far i got to 1180/1400 on 1.3v

would 1.4v kill my card if i just use that for benching

Judging from the scaling it would seem that either the power reg on the gcard is either getting too hot, or your core temps are too high, as you shouldn't need 1.3v to scale from 1130 to 1180mhz on the core. Maybe your card is just a poor clocker, but what are your temps with your water cooling, and do you have fans over the vrm and power phases?


As the stock cooler is off now the vrms are exposed to air now,(unless you put heatsinks on with thermal glue), the vrm's were cooled by thermal tape which then pushed up against the stock cooler before, not a great way to transfer heat.

Personally unless I had a way of measuring vrm temps then I wouldn't push anymore than 1.25v, especially as your gcard seems to be a poor clocker and isn't responding well to increased voltage.

My powercolor 7950 (v5) only needs 0.95v for 950mhz, and 1.18v to hit 1175c 1600memory, But as soon as I try over 1.2v or if the card hits 73c it'll start to artifact.
 
Judging from the scaling it would seem that either the power reg on the gcard is either getting too hot, or your core temps are too high, as you shouldn't need 1.3v to scale from 1130 to 1180mhz on the core. Maybe your card is just a poor clocker, but what are your temps with your water cooling, and do you have fans over the vrm and power phases?


As the stock cooler is off now the vrms are exposed to air now,(unless you put heatsinks on with thermal glue), the vrm's were cooled by thermal tape which then pushed up against the stock cooler before, not a great way to transfer heat.

Personally unless I had a way of measuring vrm temps then I wouldn't push anymore than 1.25v, especially as your gcard seems to be a poor clocker and isn't responding well to increased voltage.

My powercolor 7950 (v5) only needs 0.95v for 950mhz, and 1.18v to hit 1175c 1600memory, But as soon as I try over 1.2v or if the card hits 73c it'll start to artifact.

1180 is the most i tried so far which i let heaven run for 2 hours which is stable maxed out at 52c, my card asic is 72.3

i have fans on both sides of the vrms with heatsinks,

on my fan controller i can put sensors on it so will dig some out of the box tomorrow

thanks for the reply
 
You know op it would help if your were honest in your results and actually had a water cooler fitted to the gpu.
You asking is 1.4v safe, when you've just retrofitted 2 120mm fans onto the original shroud, and quoting temperatures of a stock 1.18v 925 1250 heaven run.
When at 1.3v 1150mhz you are actually hitting 80c.

http://www.overclock.net/t/1395490/ati-hd-7950-7970-bios-mod-thread/1040

yes i know im putting my waterblock back on now and i was just helping the person as they wanted to see what temps would be like with two 120mm fans as the person fan rpm is messed up and loud

to be fair that was a good temps with 1.3v as stock was 1.169 58c (120mm x2)

with my original cooler i was getting around 70c so it was a big difference in temps
 
I apologise for thinking you didn't really have a water cooler op. It just seemed from the overclocknet that you were just using fan modding the heatsink and quoting the stock voltage temps as your 1.3v temps, so once again Apologies.

The fan mod does work well considering the card was holding 1.3v at 80c. The original cooler was at 90c. That's pretty good for a cheap upgrade. A little too noisy for me personally but for benching it works well.
Hope you can hit 1200.
 
I apologise for thinking you didn't really have a water cooler op. It just seemed from the overclocknet that you were just using fan modding the heatsink and quoting the stock voltage temps as your 1.3v temps, so once again Apologies.

The fan mod does work well considering the card was holding 1.3v at 80c. The original cooler was at 90c. That's pretty good for a cheap upgrade. A little too noisy for me personally but for benching it works well.
Hope you can hit 1200.

no worries at all but it was my fault aswell as should have said on here i be putting my block on in the next couple of days and yes its a cheap upgrade but to tell the truth it wasn't a loud as the stock cooler as these enermax fans only go to 1500rpm

nearly done with doing my loop now and also added a cooling plate to the vrms but not sure how good that will be as it was ment to be for a mosfet for a gigabyte x79 ud3
 
Water cooled vrm cooling nice!!
Good temps, lets hope it wakes it up a bit now

Strange pcb though, you have 8+6 connectors but then only 5 phases.
 
yes good temps but i seen that my heaven scores have gone down but that mite be because i keep uninstallingthe drivers to flash it so will do a clean install of windows later tonight once i found my max clocks

with the phases there is 6 but you cannot see one of them as the fitting in the way
 
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