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7950 Vapor X Voltage Locked? - Page 28

post #271 of 1056
Well yeah it runs fine at those speeds until the VRM reaches 110c, which causes the core/mem to drop to 500/800 until it goes down.
Ill try flashing the boost bios which I dont use. What tool do I use though?

I found the XT2 in case you were wondering, here: http://www.techpowerup.com/vgabios/125085/Sapphire.HD7970.3072.120717.html
post #272 of 1056
Do you have c++ amp (if I ain't mistaken its needed)
post #273 of 1056
I use AtiWinFlash and it said successful, restard. I restarted, and its still got the same everything. Hmm..
post #274 of 1056
Ugh, used ATIFlash and now no programs recognize the GPU, although it must be working as I dont have onboard video...
post #275 of 1056
This XT2 bios give me black screen/no boot. Tried one week ago...

AND look what i found - he tells that vrm1 is not that what we thinking about:
http://www.overclock.net/t/1281711/hd7950-revised-with-reference-hd7970-pcb-club/110#post_18447662
Looks like vrm1 is only small on the left side of gpu!
Edited by adamlop - 10/26/12 at 3:00pm
post #276 of 1056
Hmm. I've tried these bios:

Vapor-X Boost
Vapor-X
OC
Regular

All sapphire Bios, of course. Same result, not recognized. I guess I can try a few 7950 Bios or otherwise we're left to hardware changes
post #277 of 1056
But works on second bios?
Have original copies of yours?
I have checked all bioses and only sapphire oc 950mhz works with our vapor-x cards

Dont use winflash!
Atiflash -p 0 -fp -fs biosfilename.rom
Edited by adamlop - 10/26/12 at 3:06pm
post #278 of 1056
Yeah I used Atiflash for all of those to be sure, since I got S/N mismatch or something before.

However... I have, maybe... good news?

I used the 7950 OC Edition [925MHz] and I am running 1200/1.125v with no throttling. Temps are ever so slightly lower, but most importantly the VRM temp limit is increased. 113c is the highest it went so far, no throttle. [@63%fan]

Unless it is throttling in a way that isnt showing up on MSIAfterburners monitoring tool, the temps are absolutely lower.

Before:
100% Fan
1150 core
1.058v
VRM range 102-110 [Throttling prevents higher]

Now:
73% Fan
1200 core
1.125v
VRM range 105-110

Now2:
63% Fan
1200 Core
1.106v
VRM range 106-108

Only problem with this bios is the absurdly low memory limit of 1575! Also a core limit of 1200! Hopefully I can use the ATI bios editor thing to increase that..

Also noticed the power limit is quite a bit higher. Before I needed +8 power limit for 1150/1.058 or whatever. Now I only need +5 for 1200/1.100
Edited by Derpinheimer - 10/26/12 at 3:17pm
post #279 of 1056
Im not sure that vrm1 is this with big heatsink
He have 950mhz ver, but look at screen descriptions
http://www.overclock.net/t/1281711/hd7950-revised-with-reference-hd7970-pcb-club/110#post_18447662
post #280 of 1056
Ah, so what do you think it is that is making the reported temps lower ? If more sensors were available I'm sure they'd be in use... but I suppose its possible that VRM1 is now a different device being reported, in which case the real VRM1 could be burning up for me xD

Im running bitcoin miner right now @ 1200 core 1.093v, 104-105c!
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