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thats failll as u can see...what ..no no...look i even have a title...i swear i had a new thread open....this is...the devils work no doubt,,
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7970 volt Oc problems
- Thread starter HankScorpio
- Start date
yea the Lightning is no better than the Sapphire Dual x.... fact.
because i compared both cards via the reviews/ forums etc, the lightning is no better than the VTX3D as well, it's down to one thing only:-
pure LUCK !!!! you'll either get a card that OCs well, or one that doesn't.
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or one that needs RMAing
Out of my four XFX 7970's one will top out at 1.38GHZ in 3DMARK.
There are a couple of games which are vram clock limited (Batman Arkham City) so, beyond 1.34GHZ is useless unless you can get more than 1.85GHZ out of the vRAM.
To go above 1.38V on the reference GPU boards requires a flash to the ASUS test bios, which would not work on this card and *I do not recommend it*, there is high risk you will kill your reference card by using it.
To get to 1.4GHZ really needs 1.4V and (if multiple cards) chilled water, I hope MSI will release something which allows you to do it.
The amount of heat my cards generate in crossfire with 1.38v at 1.25GHZ is unreal.
To the poster who says the MSI card's are not worth it over reference, I think not. If you are on Air cooling they are the best cards out at the moment. And if you slap a water-block onto it your warranty remains unlike the others.
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to be honest i blew it by OCing it too far, i've read quite a few posts today and even the more moderate setting that i ran it on, is still much higher than many others here....because the one thing about OCing that i couldn't tell was:-
``is the card happy at this setting, because it wasn't at 1.3v, but feels fine at 1.24.... but is it !
i have one big problem, if i blow the next card as well Ba***** will become very suspicious of me and might not honour my guarantee next time.
as such, i cant afford to go crazy next time, because it was on 1.25v......2200......1800 or close.......but maybe it should only be 1.20v.....1500......1600...
this is a massive reduction, but still way more than stock
i saw some artifacts whilst gaming !!!!! screen taring, pixels, flashing lights etc, but i thought this was due to me being on Win XP/ Compatability mode/ 32 bit etc, rather than the card being OC too far, damn it, maybe it was a bit of both !
the coil whine also increased whilst surfing the web, especially scrolling up and down a page, i noticed this when i was upgrading the rig two days before it blew
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i wouldn't go anywhere near 1.4v, no higher than 1.25v, once bitten once shy.
if i was going in search of more performance, i would sell the 7970 and get the 7990 instead, if fact; i'm thinking of doing this anyway!
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If you get a 680/670/7970/7950 just leave it at stock and don't bother overclocking fullstop. If you really really want to do it, read up a few more guides and take a precautionary approach, don't expect to do it all in one go in the space of 5 mins, take your time. Increase it gently and play your games as you normally would over the space of a week or so.
to be honest i blew it by OCing it too far, i've read quite a few posts today and even the more moderate setting that i ran it on, is still much higher than many others here....because the one thing about OCing that i couldn't tell was:-
``is the card happy at this setting, because it wasn't at 1.3v, but feels fine at 1.24.... but is it !
i have one big problem, if i blow the next card as well Ba***** will become very suspicious of me and might not honour my guarantee next time.
as such, i cant afford to go crazy next time, because it was on 1.25v......2200......1800 or close.......but maybe it should only be 1.20v.....1500......1600...
this is a massive reduction, but still way more than stock
i saw some artifacts whilst gaming !!!!! screen taring, pixels, flashing lights etc, but i thought this was due to me being on Win XP/ Compatability mode/ 32 bit etc, rather than the card being OC too far, damn it, maybe it was a bit of both !
the coil whine also increased whilst surfing the web, especially scrolling up and down a page, i noticed this when i was upgrading the rig two days before it blew
I kind of guessed you went to far....Pays to take note of what others say sometimes.
Maybe a 670/80 would suit you as you cant mess with the volts but can still Overclock?
Ohhhh and it's "Once bitten, twice shy"
Thanks for that valuable input.
i think i'll OC via the AMD Catalyst only, this limits the figures i can put in, i was at 2200 clock core, AMD Catalyst only goes to 1375 or close to, which is a 24% increase.
as you can see, 2200 is way too high! i got this figure off loads of other forums... plus 1.24V is far too high as well, leave the voltage on stock; or slightly above..... 1600 memory looks about ok though.
there was no coil whine before i OCd and it only really got bad at about 1.24v and 2200 core..... by this time the card was already damaged.
why didn't MSI Afterburner crash etc/ Prime 95 ?..... no idea, but maybe it did, because i noticed the moving graphics on the screen freezing and starting up again, but i didn't have the experience to know what this meant.... i was expecting the pc to crash instead, because the pc definitely didn't behave the same as when the GT 8800 did, when it was OCd too far..... not doing so fooled me into thinking the 7970 was ok
what the OC software lacks, is a warning message that you're going too far, it gives you results yes, but if you dont have the experience this means nothing, because my card was also running cool, yet was still struggling, so a high temperature is not necessarily a sign that you've gone too far either.... and i was watching the temperature more than anything else !!!
i was waiting for the pc to freeze/ programe to crash etc, it didn't so i thought the card was ok.
i visited a mate in PC World, he said that the sparking noise is voltage resonating on a main pc thread track, it's not coil whine, he said back off the OC as soon as you get home or the card will definitely blow.... mine sounded like a kids firework sparkler.
1.3 v was too high and i realised this straight away.... yea' but so was 1.24
as you can see, 2200 is way too high! i got this figure off loads of other forums... plus 1.24V is far too high as well, leave the voltage on stock; or slightly above..... 1600 memory looks about ok though.
there was no coil whine before i OCd and it only really got bad at about 1.24v and 2200 core..... by this time the card was already damaged.
why didn't MSI Afterburner crash etc/ Prime 95 ?..... no idea, but maybe it did, because i noticed the moving graphics on the screen freezing and starting up again, but i didn't have the experience to know what this meant.... i was expecting the pc to crash instead, because the pc definitely didn't behave the same as when the GT 8800 did, when it was OCd too far..... not doing so fooled me into thinking the 7970 was ok
what the OC software lacks, is a warning message that you're going too far, it gives you results yes, but if you dont have the experience this means nothing, because my card was also running cool, yet was still struggling, so a high temperature is not necessarily a sign that you've gone too far either.... and i was watching the temperature more than anything else !!!
i was waiting for the pc to freeze/ programe to crash etc, it didn't so i thought the card was ok.
i visited a mate in PC World, he said that the sparking noise is voltage resonating on a main pc thread track, it's not coil whine, he said back off the OC as soon as you get home or the card will definitely blow.... mine sounded like a kids firework sparkler.
1.3 v was too high and i realised this straight away.... yea' but so was 1.24
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Soldato
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- 9 Mar 2009
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sorry no my fault
1.25v... 1220....... 1860...
it's written down in my notes as 1100 to 1220gpu clock...in fact i have quite a few written down at that figure, but did i put in 2200...... i cant remember now.. let me check this
``the temperatures went up on full load on the card by about 10 degrees, (with the case fans turned right down)....it's about 80 degrees on max MSI benchmark Afterburner right now, fan speed auto.....i've now reduced the 7970 OC to :- 1200.....1680......1.243 ``
ok phew
so i had it on 1200, even so this OC was still too high, probably the voltage as well, but i've seen loads higher than this online..... so i'm guessing i had a weak card as wellok so next time i'll go up in small amounts from stock, but stop well before the figures above, because last time i started at this figure and then went right up to 1.3....... i did not bother backing off below 1200/ 1.24v.
1200......1680......1.24 was the lowest figure i dialled in....... BUT FROM TODAYS RESEARCH, this figure is still way too high in about 70% of all cards
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Associate
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+10000000 to that.