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Calling on 7850, 7870, 7950 and 7970 owners
- Thread starter humbug
- Start date
That's the case with the 7970. Not sure if its the case for 7870 cards and below, i assume so.
You'll know if you triggered over current protection as the screen will go black, pc will be un-responsive until you restart.
no it wont
Trixx will let you carry on OCing until you screw up your card, this is what i've been saying all along 
because my pc never crashed at 1.3v, i played the 1st Crysis for about 5 mins, maybe longer, all i saw on the screen was fine white snow
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What; have you been reading?
Oh okay,I've seen it in a good 6-8 posts that you take your standard voltage and then you should go no further than +0.125 It might have even been said in this thread not sure so what's a safe voltage for a 7950? (not that I'm going to go any further just interested)
There is no standard for any AMD GPU, not even one of the same make and model, some can't take much at all, others are happy to chew on big volts.
every single one is different, which is why you start out small and gradually work your way up with the volts.
Some PCB's are more efficient at getting the volts to the GPU chip, so they need less volts, some PCB's cant handle to many volts, others can.
They all have over-current protection, so in theory you can't over do it, but like anything that can fail.
If it does spike past what the PCB can take and the over-current protection fails, the Mosfet's, Circuits, VRM's, Caps... whatever is weakest just pops or fry's, and that's the end of your £250 GPU.
I guess there is such a thing as head room in all PCB's from stock when a spike is within tolerance margins, that could very well be ~125mv, which is a lot.
On my GPU that would be 1.343v, that's .043mv over what the standard voltage unlock limit is.
It is perhaps true then that maybe 100mv or so over stock is a safe limit.
Soldato
- Joined
- 27 Feb 2012
- Posts
- 6,586
1st 7970 - Stock 1174, max 1368. (reference Sapphire)
2nd 7970 - Stock 1113, max 1378. (VTX3D X-Edition)
7850 - Stock 1210, max not sure, need to ask brother.
2nd 7970 - Stock 1113, max 1378. (VTX3D X-Edition)
7850 - Stock 1210, max not sure, need to ask brother.
I've upped mine from 0.993 to 1.1 to run 1150/1600 It's vidic is 92% would you consider that safe volts and clocks then or?
I'm worried about breaking my baby lol (it's a 7950 not sure if that matters)
I think thats fine
Thanks for massaging my worry! Lol
Oh and I have also put +20% on the power limit on Msi afterburner after being recommended to do so (it didn't have this before was set on+0 changed it earlier but didn't get to play so don't know if this has made any difference)
I do get weird little lines on the screen though kind of like mild screen tearing but I have noticed I have it a little at stock clocks also is this just the game or?(sleeping dogs I haven noticed it at all in gw2 suppose I should try some more games!!) God I'm so paranoid!! Just like to get the info to little knowledge is dangerous I suppose!!
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Everything seems to be contradicting in this thread! My card seems fine at 1300mV but not sure if it's a good idea long term. Want the card to last a few years! At 1250mV currently on 1200/1600 till I find a final overclock. Default is 1175 according to MSI afterburner but it's clocked at 1068mV in this BIOS I think.
Card has good cooling now, was a VTX3D 7970 now it's an Arctic Accelero 7970, every component is cooled. ^^ Fan at 90% barely noticeable.
Card has good cooling now, was a VTX3D 7970 now it's an Arctic Accelero 7970, every component is cooled. ^^ Fan at 90% barely noticeable.
Associate
- Joined
- 1 Sep 2011
- Posts
- 139
- Location
- York
Well, Ive been out of the loop for many years, The last card I overclocked was a "winfast Geforce 3TD" Then... Children 
Anyhow, My 7970 (xfx black edition 1000/1425 1112mv) sits at 1150/1600, voltage - 1174mv. If i push it to 1200 on the same volts. I get artifacts. Does this mean it needs more volts? Or is this the limit of card? Temps are 70c, At stock, I get the same temps gaming.
Anyhow, My 7970 (xfx black edition 1000/1425 1112mv) sits at 1150/1600, voltage - 1174mv. If i push it to 1200 on the same volts. I get artifacts. Does this mean it needs more volts? Or is this the limit of card? Temps are 70c, At stock, I get the same temps gaming.
well maybe its the gpu that's causing the problems then, mine started causing artifacts at 1250..... was 1200.
it was 1.181.....1200........1600
but it didn't like 1.2.....1250.....1650
from these last few posts it looks like the ideal figures are 1200.....1600
it was 1.181.....1200........1600
but it didn't like 1.2.....1250.....1650
from these last few posts it looks like the ideal figures are 1200.....1600
looks like i will be rma'ing my card as i have these weird suttle lines that scroll on my screen in game and when i come out with the game still running and look at stuff has been like this since i got it just wasnt sure if it was a driver problem but looking like its the card booooooooooo
does anyone know what causes this?
does anyone know what causes this?
try playing a game that you know is stable, i.e Bulletstorm, dont test it on an old game..... my card hates older games, any game over 3 years old! test it on stock settings as well
if it still does it, try reseating the card, reseating the mem sticks, fiddle around inside the rig, if it's still there then yes get another card.
it wont be drivers, card should be fine even on 12.4
but you will see horizontal lines from time to time, like join lines, i ignore these, i just accept it's going to occassionally do this, you dont want to have MSI AFTERBURNER and TRIXX, plus Catalyst on your rig all at the same time, it causes conflict issues and instability, only have Catalyst and one other.
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i have tried it on sleeping dogs,gw2,dead island,stalker: clear sky,blacklight retribution and then i removed the card and tried it with my 6850 with no issues put the 7950 in again tried the games again with the same issue.
it doesnt do it on skyrim or bastion
i have posted in the customer services section so hopefully should get some feedback from there.
im gutted got a card with a great vidic and low volts which ran cool now im gonna be without a card back to my 6850 then......
yeah its not like join lines its just suttle lines going across the screen generally in the middle portion of the screen that move about the same colour if not a little faded than the colour at the time sometimes there very visible others more sutle and its always there. i didnt realise how much it was spoiling the games untill i plugged in my 6850.
what is it when u get these suttle scrolling lines anyway?
i have ccc installed and msi afterburner and ive kept afterburner closed,all tests have been done on stock clocks it does it when oc'd too but i havent played with it much ocd as i didnt need to was just finding the clocks for future use.
it doesnt do it on skyrim or bastion
i have posted in the customer services section so hopefully should get some feedback from there.
im gutted got a card with a great vidic and low volts which ran cool now im gonna be without a card back to my 6850 then......
yeah its not like join lines its just suttle lines going across the screen generally in the middle portion of the screen that move about the same colour if not a little faded than the colour at the time sometimes there very visible others more sutle and its always there. i didnt realise how much it was spoiling the games untill i plugged in my 6850.
what is it when u get these suttle scrolling lines anyway?
i have ccc installed and msi afterburner and ive kept afterburner closed,all tests have been done on stock clocks it does it when oc'd too but i havent played with it much ocd as i didnt need to was just finding the clocks for future use.
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finally there is something else that will screw up your image, especially if you have it on the same electrical wall socket :-
those cheap and nasty Chinese external speakers, they'll feed noise back through your rig, especially if they're old and crackly sounding, watch out for them, they'll make your PSU noisey too.
i got rid of mine the other day, they even made crackling noises with the tv/ pc turned off, because they're still on even in standby mode.
those cheap and nasty Chinese external speakers, they'll feed noise back through your rig, especially if they're old and crackly sounding, watch out for them, they'll make your PSU noisey too.
i got rid of mine the other day, they even made crackling noises with the tv/ pc turned off, because they're still on even in standby mode.
these scrolling lines are worst than i thought, now that you've described it better, this looks like a screwed card, it's a variation of screen tearing..... i think !
normal scrolled horizontal lines are very faint, like a shimmering ``cloak on``but this could be the HDMI Feed or even the tv, but they have deffo reduced since i got rid of that horrid external audio
hang around, you dont still have your old drivers do you for the 6850, old drivers are a real pig to delete, this used to screw up my GT 8800 .....just saying that's all, because i've read quite often that old drivers can screw up the 7 series as well, this might be worth investigating
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