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Sapphire TOXIC HD-6950/70 Owners Club & Informational Thread - Page 61

post #601 of 1649
you guys are both right really but its the principle of the matter that bugs me. even if they cant tell about powertune settings (which is sorta irrelevant) i just dont think its acceptable to "cover their own back" and basically say "F-YOU" to their customers. this is the kind of behaviour we see all to often with big companies because they have an army of lawyers that allow them to get away with anything. i could go off on one with that train of thought because its pretty much my biggest problem with the world, but i'll just leave it at that! i still think they make good products but im not happy with being given the finger over this issue after i paid out £230 on a graphics card which is by far the most ive ever spent on any single piece of pc hardware.
post #602 of 1649
Quote:
Originally Posted by Tokes Green View Post

System is completely stable with my HD 6770 (before and after), and is stable with the 6950 until anything demanding hits it.
Quote:
Originally Posted by tsm106 View Post

^^Well that's not stable then. If we take your resellers word, then w/o knowing anything about your rig... crashes upon 3D load, that would = a power issue.
Quote:
Originally Posted by Tokes Green View Post

Hi, I did what you asked but it made no difference to my stability at all - sorry I couldn't be more helpful.

Today I rebuilt my old rig and borrowed a Psu, turns out the card is fine after all and it IS my damn Psu! Rma today and hopefully some Toxic 6950 (unlocked) fun in a few days biggrin.gif

Oh and to anyone else who offered their assistance - ET900 - tsm106 .... Thanks!

thumb.gif
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post #603 of 1649
Quote:
Originally Posted by tsm106 View Post

thumb.gif

Haha, an update...

Carried on using my friends Psu, 30 mins later same thing. So my Rma'd psu arrives this morning - what could go wrong? You guessed it folks... same problem!
I'm pretty sure now that this card is to blame. Everything else works fine! Oh and in case you were wondering, my friends psu is a Corsair 850W HX and he runs 2 6970's on it.

Kind of annoyed that the guy I bought it from sent it back saying he had tested it?! mad.gif
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post #604 of 1649
If you still have yer friends psu, underclock your core speed and run some games on it.
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post #605 of 1649
yeh try running it underclocked and see what happens. it sounds like a vram problem, im almost certain it is. but you could just skip testing it and send it back to the guy saying you're mad cos you forked out on a new psu cos you took his word for it but after more testing realised it was the card that is at fault. he may not have realised though if he never put it under any stress so explain the problem to him and how you came to realise it without being to ****ty, a lot of people are gonna react badly if you just get ****ty at them no matter how much you wanna in these kinda situations! good luck, hope it all gets sorted out for you!
post #606 of 1649
Hello all, hoping I'll be welcome here since I just bought the Sapphire 6970 2GB Dual Fan. I'm replacing an 8800GT 512MB BFG that I've had for over 4 years now. I'm upgrading the rest of my rig after this semester is over (2700K, ASRock P67 Extr6, 8GB DDR3-1600). I'm trying to educate myself about my card a little more and after browsing through the thread I have a couple questions.

As I looked through the spreadsheet of owners I see clearly that about 90% of owners, while overclocked, are sitting at stock volts. Is there a reason for that? A few memebers have their cards running near 1.25V and have much better overclocks. I would think everyone would do this. What kind of overclocks do you think I can hope for, 980 core or higher? My case has ridiculously good airflow.

If my card has two BIOS settings and the higher is at 1.2V, is there a way I can force it higher still, and approach 1.25V? What's the upper limit on voltage for these chips, 1.25V or can my card go above that? I've read a bit about sliding the Power Control Settings bar to 20% in CCC, and I thought I read that on my card the second BIOS setting moves that setting to 50%, is that right?

Thanks in advance guys.
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post #607 of 1649
Quote:
Originally Posted by CWell1337 View Post

Hello all, hoping I'll be welcome here since I just bought the Sapphire 6970 2GB Dual Fan. I'm replacing an 8800GT 512MB BFG that I've had for over 4 years now. I'm upgrading the rest of my rig after this semester is over (2700K, ASRock P67 Extr6, 8GB DDR3-1600). I'm trying to educate myself about my card a little more and after browsing through the thread I have a couple questions.
As I looked through the spreadsheet of owners I see clearly that about 90% of owners, while overclocked, are sitting at stock volts. Is there a reason for that? A few memebers have their cards running near 1.25V and have much better overclocks. I would think everyone would do this. What kind of overclocks do you think I can hope for, 980 core or higher? My case has ridiculously good airflow.
If my card has two BIOS settings and the higher is at 1.2V, is there a way I can force it higher still, and approach 1.25V? What's the upper limit on voltage for these chips, 1.25V or can my card go above that? I've read a bit about sliding the Power Control Settings bar to 20% in CCC, and I thought I read that on my card the second BIOS setting moves that setting to 50%, is that right?
Thanks in advance guys.

oh wow, that upgrade is gonna blow your mind! haha biggrin.gif speaking for myself only - i am on stock voltage with a relatively moderate overclock that is matched with a 6970 spec apart from the extra 40Mhz on the core clock, because i set the clocks higher but the gain was insignificant. going above 1375Mhz on the memory clock wasn't worth it. Instead of trying to explain why i have the OC i have i will just repost something i posted earlier in the thread so you can see for yourself...

STABILITY TEST WITH FURMARK (1.9.1)...

core max - 960mhz (965mhz corruption)
memory max - 1510-1520mhz? (1525mhz CORRUPTION)




BENCHMARKS WITH FURMARK (1.9.1) USING 720 PRESET...

STOCK CLOCKS...
FURMARK: SCORE:3556 points (59 FPS, 60000 ms)
3DMARK VANTAGE: P16957 3DMarks



OVERCLOCK 900/1375...
FURMARK: SCORE:3672 points (61 FPS, 60000 ms)


OVERCLOCK 910/1375...
FURMARK: SCORE:3699 points (61 FPS, 60000 ms)


OVERCLOCK 920/1375...
FURMARK: SCORE:3742 points (62 FPS, 60000 ms)
3DMARK VANTAGE: P17735 3DMarks


OVERCLOCK 930/1375...
FURMARK: SCORE:3751 points (62 FPS, 60000 ms)


OVERCLOCK 930/1400...
FURMARK: SCORE:3734 points (62 FPS, 60000 ms)


OVERCLOCK 930/1420...
FURMARK: SCORE:3746 points (62 FPS, 60000 ms)


OVERCLOCK 930/1450...
FURMARK: SCORE:3771 points (62 FPS, 60000 ms)
3DMARK VANTAGE: P17899 3DMarks



Hopefully that explains why. Now keep in mind this is all with stock voltage, not once have i upped the voltage but i may do in future and go for higher clocks, as for now i just dont see the need, especially considerng my cpu will only hold me back, i think it already does to be fair! im quite new to overclocking to so im not really into pushing things to much at the moment, its a bit scarey when you have a new bit of hardware you just paid loads for to! :/

you may want to have a look on the front page because there is an overclocking section that basically says going above 1.25 volts can give higher clock speeds but isn't worth it as it sometimes hurts performance. im not sure how many people have tried this but i dont think i'll ever bother going above 1.25v considering all the combined knowledge we have here!

the power control setting needs to go to +20% for stock clock speeds and overclocks like mine, for really high overclocks you may want more. it just stops the card throttling down and hurting performance. ive never heard anything about the bios changing these settings, in fact that is the biggest issue with the toxic 6950 - the bios doesn't allow enough power which is why we use powertune. also afer writing all that i just realised you said you have a 6970 and not a toxic 6950 lol!! what ive said should still pretty much be relevant though...

Edit: At stock clocks on a 6970 you shouldn't need to powertune as far as im aware. someone else can probably confirm this though.
Edited by ET900 - 12/3/11 at 5:46pm
post #608 of 1649
But you're at 1.175V? That leaves you quite a bit of room, I mean you could increase 0.825V and still be 0.05V under the max. I just don't get why no one seems to want to push their cards around here.

My previous questions are still relevant since I'm asking specifically about my card, and not the 6950 Toxic.
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post #609 of 1649
Quote:
Originally Posted by CWell1337 View Post

But you're at 1.175V? That leaves you quite a bit of room, I mean you could increase 0.825V and still be 0.05V under the max. I just don't get why no one seems to want to push their cards around here.
My previous questions are still relevant since I'm asking specifically about my card, and not the 6950 Toxic.

yeh you're right i could. but as i said - i just dont think there's much point considering my cpu. when i upgrade to a 2500k next year i will probably be pushing the 6950 further.
post #610 of 1649
Quote:
Originally Posted by CWell1337 View Post

But you're at 1.175V? That leaves you quite a bit of room, I mean you could increase 0.825V and still be 0.05V under the max. I just don't get why no one seems to want to push their cards around here.
My previous questions are still relevant since I'm asking specifically about my card, and not the 6950 Toxic.

My card is unlocked. I have pushed it all the way to 980 and 1500 with 1.250 volts and +20% power tune. Not really worth it IMO. after about 950 and 1375 there was minimal frame rate gain. All cards will hit a wall like this, but the clocks will be different. my 460 GTX also had a limit of when overclocking was just making more heat and no real performance gain, even though it was stable. You will have to test your card out and see where it stop's gaining performance in what ever it is you do with your card. Mind you that each card is going to react differently, one toxic might love 990 core 1500 memory, one might not gain any performance ater 900 core. its the "random" factor in GPU's I have noticed over the last few years. I will say my Toxic in all its uber-ness make's my RL friend with a 580 GTX jelly as can be. He payed 600 bucks for it, and after overclocking my $280 card get's damn near identical performance in game's like BF3 and Skyrim. however his 580 seems to not take to graphics mods as well as my AMD card, but this might also be PEBKAC on his behalf.
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