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[Official] The AMD Radeon 7800 Owners Club - Page 203

post #2021 of 4048
Can I be added to the club ?!

I just ordered gigabyte 7870 1100mhz biggrin.gif:D:D:D It will be here on friday !biggrin.gif
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post #2022 of 4048
My OEM 7870 does not work via Hdma. It recognizes the monitor and it dhows in CCC and windows resolution but. The monitor gets no signal. I've tried adapters and more. Is the anyway to fix this?
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post #2023 of 4048
Just OC'd my Gigabyte 7870 Ghz edition to 1140/1375 with 1.25v and benched this:
screenshotbenchmark.jpg

monitoring.jpg

If I take the volts to 1.3v I can achieve 1200/1375+(went up to 1500 and made it through a bench without crashing, although this is probably not stable)
is 1.30v too much for this card or is that good for a 24/7, temps haven't gone above 53C even at 1.3v 1200/1500

are there any tweaks to CCC+afterburner I can do for more compatibility as well.

edit: according to this http://forums.overclockers.co.uk/showthread.php?t=18386056 I'm at the low end of a 7970, so not bad all things considered.
Edited by toastiro - 11/6/12 at 1:06pm
post #2024 of 4048
Quote:
Originally Posted by toastiro View Post

Just OC'd my Gigabyte 7870 Ghz edition to 1140/1375 with 1.25v and benched this:
screenshotbenchmark.jpg
monitoring.jpg
If I take the volts to 1.3v I can achieve 1200/1375+(went up to 1500 and made it through a bench without crashing, although this is probably not stable)
is 1.30v too much for this card or is that good for a 24/7, temps haven't gone above 53C even at 1.3v 1200/1500
are there any tweaks to CCC+afterburner I can do for more compatibility as well.
edit: according to this http://forums.overclockers.co.uk/showthread.php?t=18386056 I'm at the low end of a 7970, so not bad all things considered.

I would really not recommend pushing voltage so high for just 60 Mhz gain. stick to 1140 Mhz at 1.25v
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post #2025 of 4048
Quote:
Originally Posted by toastiro View Post

Just OC'd my Gigabyte 7870 Ghz edition to 1140/1375 with 1.25v and benched.

If I take the volts to 1.3v I can achieve 1200/1375+(went up to 1500 and made it through a bench without crashing, although this is probably not stable)
is 1.30v too much for this card or is that good for a 24/7, temps haven't gone above 53C even at 1.3v 1200/1500

are there any tweaks to CCC+afterburner I can do for more compatibility as well.

edit: according to this http://forums.overclockers.co.uk/showthread.php?t=18386056 I'm at the low end of a 7970, so not bad all things considered.

What water block are you using to achieve such great temps? I am with EK's FC7850 and the temps go to low 60's on my HD 7850@1200Mhz and 1.18V. When I had Supreme HF VGA on the temps were significantly better, never exceeded 50 really, but that was just on the core, so other things like RAM and VRMs did not contribute to that. I may have to re-sit the block...
I reckon that if your temps are that low there is nothing to worry about even if you push 1.3V through it, just remember to cool VRMs too and you should be fine. Also remember that your card will not be running at that speed all the time, it will clock down to something around 400Mhz if not generating heavy demanding 3D graphics, so it will be fine for 24/7 usage.
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post #2026 of 4048
Waterblock, I wish! Running all air with a 500r. The 200MM sidefan really does an awesome job at cooling my GPU and I have a bitfenix spectre pro 200mm on the way to replace the crappy stock fan. I settled on 1225v with trixx, the moment I need more graphics power though that thing is getting pumped to 1.3v and 1200 core clock.

edit: probably the main reason it's so low is the gigabyte windforce cooler that came on the card, that thing is a beast.
post #2027 of 4048
^yea you don't need waterblock for those temps. my card runs 1200/1400 1.3v on air cooling and never goes higher than 59 C (and that was during an 80 F day, temps hover in the 60s now so it'll be cooler)
tbh i only ever use those clocks when ii'm playing graphics intensive games. otherwise i leave it at stock.
    
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post #2028 of 4048
Interesting, my Sapphire OC 7870 doesn't OC near as well as my old Sapphire 7870.

I didn't think I would get a card that could OC like my last one because that 7870 was a monster (1325/1525 all day)

I did think that I would still be able to get my memory clock near 1500 again. I'm stuck at 1275/1375 with my new one. Having the latest beta drivers my new one outperforms my old one even at the lower clocks but I was hoping for similar clocks and better drivers for mega-performance!
post #2029 of 4048
With Unigine the max temp I get is 41C, but when I torture test my card with Kombustor then I hit low 60's frown.gif
I have heard that OC'd versions of 78xx from Sapphire do not overclock that great as standard editions, that is why I have gone standard smile.gif I will try to get my 7850 to be stable @1300Mhz so far I have failed rising the voltage to 1.225V frown.gif

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Viggen Blue
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post #2030 of 4048
Yeah that is often the case with OC editions. I got it because it was $185 after rebate from Newegg. Too cheap to pass up!
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