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OR bench: GTX 980 or 780 Ti - PMC kernel
Posted: Sat Jan 17, 2015 9:23 pm
by nuno1980
Hi!
I'll buy new videocard for work PMC kernel because EVGA GTX 580 3GB had freeze problem in some games - RMA replaced to GTX 770 2GB but I don't like 770 due to the weak GPGPU and to the VRAM "downgraded".
Is GTX 980 or 780Ti faster videocard at PMC kernel running OR benchmark?
Re: OR bench: GTX 980 or 780 Ti - PMC kernel
Posted: Sun Jan 18, 2015 4:38 am
by grimm
The 780ti is faster.
Re: OR bench: GTX 980 or 780 Ti - PMC kernel
Posted: Sun Jan 18, 2015 12:20 pm
by nuno1980
Thank you.
Re: OR bench: GTX 980 or 780 Ti - PMC kernel
Posted: Thu Mar 12, 2015 11:16 am
by nuno1980
I'm very confused...
New octanebench... GTX 780 Ti@reference is slower than GTX 980@reference!??? True or false?
Re: OR bench: GTX 980 or 780 Ti - PMC kernel
Posted: Thu Mar 12, 2015 11:27 am
by glimpse
nuno1980 wrote:I'm very confused...
New octanebench... GTX 780 Ti@reference is slower than GTX 980@reference!??? True or false?
COOLING makes a big difference in performance (up to 30%) so in that extent..there's no single answer to Your question. It depends on environment, to be more exact: Your case, fan speed curves, space between cards..- in one word Airflow.
Does that answer/explain Your question(s)?
Re: OR bench: GTX 980 or 780 Ti - PMC kernel
Posted: Thu Mar 12, 2015 11:40 am
by nuno1980
glimpse wrote:COOLING makes a big difference in performance (up to 30%) so in that extent..there's no single answer to Your question. It depends on environment, to be more exact: Your case, fan speed curves, space between cards..- in one word Airflow.
Does that answer/explain Your question(s)?
Ok.
Very important: do NOT do overclock! I do NEVER overclock for my videocard.
Re: OR bench: GTX 980 or 780 Ti - PMC kernel
Posted: Thu Mar 12, 2015 11:58 am
by glimpse
You do not need to overclock, Your card OC itself if it finds more headroom & it's temperature allows to do that safetely (it's part of boost2 technology).
OC is not a bad thing on it's own, if You have enough cooling capacity (Sebastian, aka Smicha, proved that 3x 780 could be faster than 4x =) so in this case it's well worth to spend some extra money..
but it's not for everyone for sure =) if You're interested feel free to read my site for more info. I'll do a simple article about this OctaneBench asap explainig why we see some difference in results & how to get the best of it if You look for an upgrade =)
Re: OR bench: GTX 980 or 780 Ti - PMC kernel
Posted: Thu Mar 12, 2015 12:08 pm
by nuno1980
glimpse wrote:You do not need to overclock, Your card OC itself if it finds more headroom & it's temperature allows to do that safetely (it's part of boost2 technology).
OC is not a bad thing on it's own, if You have enough cooling capacity (Sebastian, aka Smicha, proved that 3x 780 could be faster than 4x =) so in this case it's well worth to spend some extra money..
but it's not for everyone for sure =) if You're interested feel free to read my site for more info. I'll do a simple article about this OctaneBench asap explainig why we see some difference in results & how to get the best of it if You look for an upgrade =)
Ok. My 780Ti Classy has ACX cooler.
I use auto fan custom with 100% fan speed since ~72 ºC or hotter.
My real boost is 1150MHz (boost default 1085).