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post #11221 of 16162
Quote:
Originally Posted by superkyle1721 View Post

Yeah I figured 1000W is plent but for $10 more I could go with the 1300W and keep it in the peak efficiency points more often. That's why I was leaning toward the 1300 over 1000W

Either one will serve you well.. I have both myself and they are great PSU thumb.gif
post #11222 of 16162
650W PSU is enough for a 1500/8000 OC'd 980Ti with a 6700K OC'd?
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post #11223 of 16162
Quote:
Originally Posted by superkyle1721 View Post


Yeah I figured 1000W is plent but for $10 more I could go with the 1300W and keep it in the peak efficiency points more often. That's why I was leaning toward the 1300 over 1000W

actually you're losing more efficiency going bigger; you won't be using peek power consumption most of the time.

an oldie but goodie:

50% Load Myth

TLDR: the rig also idles, web browsing and what not were power usage is low need to be taken into account. thumb.gif

all in all though it not like you're just using 500 watts peak, a 1300 is fine.

Quote:
Originally Posted by dmasteR View Post

650W PSU is enough for a 1500/8000 OC'd 980Ti with a 6700K OC'd?
yes. i posted my killowatt readings here a day ago.

E:
Quote:
Originally Posted by looniam View Post

i'll just leave this here.

i7-2600K 4.4Ghz @ 1.32 EVGA 980TI 1.430Ghz @1.25v (390 watt PT in bios)
peak killowatt reading/ PSU efficiency (evga 750 G2)

boot into desktop: 330/297

idle: 65.4/54.28

prime95(blend): 184/163

kombuster: 477/429.3

both: 565/502.85

gaming (TW3): 325/292.5


that is all.

Edited by looniam - 2/24/16 at 9:57am
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post #11224 of 16162
Quote:
Originally Posted by looniam View Post

actually you're losing more efficiency going bigger; you won't be using peek power consumption most of the time.

an oldie but goodie:

50% Load Myth

TLDR: the rig also idles, web browsing and what not were power usage is low need to be taken into account. thumb.gif

all in all though it not like you're just using 500 watts peak, a 1300 is fine.
yes. i posted my killowatt readings here a day ago.

E:

Thank you! thumb.gif
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post #11225 of 16162
Could enyone help me with gigabyte gtx 980Ti Wf3OC?

I have samsung mems , they are preety good.



the problem is vcore.

with ocguru or afterburner i can only increase v to 1,22 ( an it switches between 1,2 -1,22)

i succesfuly modded vtable for gtx970 so i have same knowledge

the power limit is only 260W (its 104%) . 250 is base power limit


what should i do to icrease voltages?
i think first step should be increasing power limit. Should i tweak sth more?

my power supply is 1,2kW
post #11226 of 16162
Quote:
Originally Posted by xtremesystems View Post

Could enyone help me with gigabyte gtx 980Ti Wf3OC?

I have samsung mems , they are preety good.



the problem is vcore.

with ocguru or afterburner i can only increase v to 1,22 ( an it switches between 1,2 -1,22)

i succesfuly modded vtable for gtx970 so i have same knowledge

the power limit is only 260W (its 104%) . 250 is base power limit


what should i do to icrease voltages?
i think first step should be increasing power limit. Should i tweak sth more?

my power supply is 1,2kW

You're gonna need a custom BIOS, refer to this thread and he may make you one if you ask nicely wink.gif

http://www.overclock.net/t/1573308/nvidia-gtx-900-cards-custom-bios-upon-request/0_40
     
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post #11227 of 16162
Noticed a thing today. One card just started to get hotter than the other one. 10 degrees hotter than the other one. It's the second card that runs hotter. On idle they are almost the same. Second one is 2 degrees hotter.

Evga hybrid SLI


post #11228 of 16162
What direction is the flow of your case? If your top is intake and your back is exhaust, it would explain it
     
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post #11229 of 16162
All radiators are exhaust ofc.

Intake 140mms: 2 front. 1 bottom and 1 on the side.

They ran the same temps 2 days ago. haven't done any changes since.
post #11230 of 16162
You should be able to squeeze a gpu fan in behind them. It would help. Around here a Gelid 75 cfm is pretty cheap and quiet. Maybe pull an expansion plate out for better air flow.

I always change my case fans to aftermarket with much higher cfms to help keep the thermals down. Average drop of 6-7 C just by changing the intake and outlet fans.

Always found the lower gpu to run warmer than the top one in my experience. Maybe it's bcuz I have a gpu fan, but found it similar in different scenarios as well without a gpu fan.

You would think the top one would get warmer !

Hope that helps a bit !thumb.gif



FF
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