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GTX 600 Series Unlocked Voltage Bios' downloads and tools. - Page 217

post #2161 of 7931
Thread Starter 
Quote:
Originally Posted by Ilaylowfoshow View Post

Well, I finally took the plunge and flashed my 2 EVGA GTX 670 4GB SC's.........Flash went easy........No issues.......It boosts automatically up to 1254......The best thing is that both my cards clocks are in sync without having to set up different overclocks to get the in sync....
Now before the flash the highest I could get on my clocks was 1241 on the core and +375 on the memory.....
Now with the flash I get 1254 on the core (Base Boost) and +600 on the memory..And with my fan profile (which isn't too aggressive) my temps haven't risen at all post and pre-flash......Able to run heaven for 2 hours straight with no crashes or artifacting....
I know my card won't hit 1300 on the core....but I am wondering how much further I can go on the Memory.....
This flash did not effect the voltage on the memory, only the core. So you could of went to +600 before flashing the modded bios.
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post #2162 of 7931
Be that as it may...On Stock voltage at 1241....my card would crash at anything over +400 on the memory........so the voltage bump helped stabilize my clocks which may have helped my memory o/c as well..
post #2163 of 7931
I had no luck doing this on my GTX 660 (non ti). After I unlocked and flashed my card, it wasn´t recognized by windows as a Nvidia card. Tried to uninstall and re-install drivers, always the same.

Had to reflash it with the original and everythin worked again. Any tips? I really wanted to go past the 110% low power limit on these cards frown.gif
post #2164 of 7931
Quote:
Originally Posted by Ilaylowfoshow View Post

Be that as it may...On Stock voltage at 1241....my card would crash at anything over +400 on the memory........so the voltage bump helped stabilize my clocks which may have helped my memory o/c as well..


Hi i have noticed similar -occurance with my GTX 670 PE OC -

STD bios 1020/1502 - boost 1154 - using AB 2.2.3 i get +160 (1296) and max of +575 on the memory -

However - i can raise the memory over +725 if i dont push the core past 1202 - seems if i keep the TDP below 100 % i dont get the driver crash in heaven ,

likewise if i leave memory low at +275 i can push + 170 on the core giving 1306 boost - but this has less performance than the memory OC ,

The Galaxy/PE bios uploaded by darkadi on page 175 here - GTX670GC.zip 56k .zip file is the stable version that "NAMESLUCKY" was looking for -

This worked fine for me but only provided an extra +20 on the core over the std bios and wasn't quite as stable as the std - which for the MSI PE edition does have voltage increase through AB 2.2.3 (you just cant see it)
post #2165 of 7931
Quote:
Originally Posted by General123 View Post

This flash did not effect the voltage on the memory, only the core. So you could of went to +600 before flashing the modded bios.
Quote:
Originally Posted by Ilaylowfoshow View Post

Be that as it may...On Stock voltage at 1241....my card would crash at anything over +400 on the memory........so the voltage bump helped stabilize my clocks which may have helped my memory o/c as well..
Quote:
Originally Posted by D-M-G View Post

Hi i have noticed similar -occurance with my GTX 670 PE OC -
STD bios 1020/1502 - boost 1154 - using AB 2.2.3 i get +160 (1296) and max of +575 on the memory -
However - i can raise the memory over +725 if i dont push the core past 1202 - seems if i keep the TDP below 100 % i dont get the driver crash in heaven ,
likewise if i leave memory low at +275 i can push + 170 on the core giving 1306 boost - but this has less performance than the memory OC ,
The Galaxy/PE bios uploaded by darkadi on page 175 here - GTX670GC.zip 56k .zip file is the stable version that "NAMESLUCKY" was looking for -
This worked fine for me but only provided an extra +20 on the core over the std bios and wasn't quite as stable as the std - which for the MSI PE edition does have voltage increase through AB 2.2.3 (you just cant see it)

vmodded BIOS does not directly affect memory voltage (no such change), but in certain way it could help memory OC as well. basically when the core has firmer stability with higher voltage (more overcocking headroom) then it's easier for the PCB to maintain balance between core OC and memory OC (thus allowing for higher memory OC).

Please refer to this 670 OC'ing guide and check out the OC balance section (max core OC vs max mem OC and balancing the combined OC together), that explains it very well and technically speaking explains the phenomena smile.gif
http://www.overclock.net/t/1265110/the-gtx-670-overclocking-master-guide

in short, at certain point of max stable core OC, dropping the core OC by 1MHz allows for around 25MHz gain on the memory OC (keeping balance).
post #2166 of 7931
Thread Starter 
Quote:
Originally Posted by feniks View Post

Warning: Spoiler! (Click to show)
vmodded BIOS does not directly affect memory voltage (no such change), but in certain way it could help memory OC as well. basically when the core has firmer stability with higher voltage (more overcocking headroom) then it's easier for the PCB to maintain balance between core OC and memory OC (thus allowing for higher memory OC).
Please refer to this 670 OC'ing guide and check out the OC balance section (max core OC vs max mem OC and balancing the combined OC together), that explains it very well and technically speaking explains the phenomena smile.gif
http://www.overclock.net/t/1265110/the-gtx-670-overclocking-master-guide
in short, at certain point of max stable core OC, dropping the core OC by 1MHz allows for around 25MHz gain on the memory OC (keeping balance).
I have heard of this, but it does not work for me at all. I can run at 1200 and still be stuck at 7408 memory. I can run at 1330 and still run 7408.
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post #2167 of 7931
Quote:
Originally Posted by General123 View Post

I have heard of this, but it does not work for me at all. I can run at 1200 and still be stuck at 7408 memory. I can run at 1330 and still run 7408.

well, it certainly works this way for me on stock BIOSes, however on vmodded BIOS I tried (initial one) back in the day it didn't... haven't had a chance to reflash 4B unlocked yet.
post #2168 of 7931
Quote:
Originally Posted by General123 View Post

I have heard of this, but it does not work for me at all. I can run at 1200 and still be stuck at 7408 memory. I can run at 1330 and still run 7408.

hehe yea i think you have a very good card there though general smile.gif



ref the KGB - process ,

has anyone else had problems with the unlocked bios ? -

I followed the procedure - bios unlocked ok (took 2 attempt ) as frst time it unlocked but no checksum figure -ie: 81 - instead it said - fe
so redid it and got the checksum - all looks fine - but when flashed card boots up -no driver mode - with windows disabled this device because it has a problem error code 43
re-installing the drivers didn't cure this , so had to reflash the std bios back (with nvflash) as firestorm couldent locate the card (obviously with no driver loaded) ,

but would really like to try this
post #2169 of 7931
Thread Starter 
Quote:
Originally Posted by D-M-G View Post

hehe yea i think you have a very good card there though general smile.gif
ref the KGB - process ,
has anyone else had problems with the unlocked bios ? -
I followed the procedure - bios unlocked ok (took 2 attempt ) as frst time it unlocked but no checksum figure -ie: 81 - instead it said - fe
so redid it and got the checksum - all looks fine - but when flashed card boots up -no driver mode - with windows disabled this device because it has a problem error code 43
re-installing the drivers didn't cure this , so had to reflash the std bios back (with nvflash) as firestorm couldent locate the card (obviously with no driver loaded) ,
but would really like to try this
One time after flashing a new bios, I rebooted into windows and the card was no recognized so I simply rebooted again and the problem was fixed. Try that out.
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post #2170 of 7931
Quote:
Originally Posted by D-M-G View Post

hehe yea i think you have a very good card there though general smile.gif
ref the KGB - process ,
has anyone else had problems with the unlocked bios ? -
I followed the procedure - bios unlocked ok (took 2 attempt ) as frst time it unlocked but no checksum figure -ie: 81 - instead it said - fe
so redid it and got the checksum - all looks fine - but when flashed card boots up -no driver mode - with windows disabled this device because it has a problem error code 43
re-installing the drivers didn't cure this , so had to reflash the std bios back (with nvflash) as firestorm couldent locate the card (obviously with no driver loaded) ,
but would really like to try this

weird. mine unlocked the first time OK, anyways haven't tested it out yet. perhaps you "unlocked" twice the same file hence the BIOS error?

just out of curiosity, in order to recover have you used the latest nvflash from windows cmd or DOS bootable (older version of nvflash)?
Edited by feniks - 11/30/12 at 11:43am
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