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[Official] MSI GTX 780 Lightning Owner's Club - Page 320

post #3191 of 5050
Quote:
Originally Posted by Bishop07764 View Post

Congrads! It sounds like you got a winner of a card there. These things suck a ton of juice when they are clocked up too. Mine made my 900 watt power supply scream bloody murder when I was benching at 1450.

By the way, that is one monsterous looking air cooler there. It looks big enough to run with no fan. tongue.gif
You mean it will get to the welcome screen and just sit there for a full minute? This only happens with the ln2 bios?

Thanks smile.gif

It seems I got a really good one, in LN2 Mode 1280 are stable @stock voltage (~1.113-1.121v).

Sadly everything above 1333 is not benchstable. I am thinking it is my power supply. It can "only" output 47A on the combined 12V rails. The frames in Unigine Valley suddenly drop by like 50% allthough when this happens Afterburner still shows the card is clocking with 1360 or whatever I try above 1333.
I think the problem is not the wattage itself but rather the Amperes the card sucks from the 12V rail. I guess I'll order the 680W version with 55A combined 12V and give it a try.

Also I noticed my card does OC much! better with the LN2 mode than in normal mode. In normal mode somehow 1228 are not stable anymore after I reinstalled the card yesterday.
(1228 was definetely stable before last night even 1241 was stable in Valley and games)
It always crashes now in the very begining of Unigine Valley when the loadscreen is gone and the scene is about to be drawn, in the exact moment the change between no load and heavy load happens. During those milliseconds only 6 Power phases are active and somehow they are not capable anymore to handle the clocks. Because the card really barely fits in my case I scratched the PCB on the front a bit when taking the card out. Maybe I damaged it a bit frown.gif
But since in LN2 Mode all phases are active I can even go up to 1280 without any crashes @stock voltage.

Yeah the cpu cooler is pretty massive but my i5-4670k still manages to get pretty hot when given enought juice biggrin.gif

@neoroy

Are you sure it has Samsung memory? I thought rthe second batch cards with B1 Chips all have Hynix memory and the first batch with A1 have Elpida?
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post #3192 of 5050
Soooooo 1500MHz BF4 stable.... biggrin.gif

https://www.youtube.com/watch?v=vmK3ChEctaQ

Every other game is 1450Mhz stable with good temps -- Still only game @ 1320MHz - without good clocking memory the scalling is pretty meh..

https://www.youtube.com/watch?v=Lf0c9MgAMhY

https://www.youtube.com/watch?v=rZwG2gVsRWI
post #3193 of 5050
Quote:
Originally Posted by Face2Face View Post

Soooooo 1500MHz BF4 stable.... biggrin.gif

https://www.youtube.com/watch?v=vmK3ChEctaQ

Every other game is 1450Mhz stable with good temps -- Still only game @ 1320MHz - without good clocking memory the scalling is pretty meh..

https://www.youtube.com/watch?v=Lf0c9MgAMhY

https://www.youtube.com/watch?v=rZwG2gVsRWI


Wow, nice OC!

post #3194 of 5050
So I just picked up my second 780 lightning but there is a bit of a problem, the card won't switch into the LN2 bios when I flip the switch. Anyone know what might cause this?
post #3195 of 5050
Where did you buy it from? I've been looking for one all over.
post #3196 of 5050
Quote:
Originally Posted by Wickedtt View Post

Yeah only in LN2 everytime i restart it will do that it doesnt show the welcome screen its just black screen but does show the windows symbol as it normally does, but if i shut down and turn the comp back on it will load fine the strange thing is when i log in it changes my background like i just added the card to my system on first boot. but when i go back to normal bios its fine boots right up without a hitch.

I have seen some people over at Guru3d that have been complaining about black screen on windows boot. This may be what you are experiencing. It looks like it is a driver issue for some as it doesn't happen on some driver revisions. It may see the card as a new card when you switch the bios. It will then try to install some generic vga drivers. That part is normal. You may want to try the latest whql drivers that were just released.
Quote:
Originally Posted by Mysterion90 View Post

Thanks smile.gif

It seems I got a really good one, in LN2 Mode 1280 are stable @stock voltage (~1.113-1.121v).

Sadly everything above 1333 is not benchstable. I am thinking it is my power supply. It can "only" output 47A on the combined 12V rails. The frames in Unigine Valley suddenly drop by like 50% allthough when this happens Afterburner still shows the card is clocking with 1360 or whatever I try above 1333.
I think the problem is not the wattage itself but rather the Amperes the card sucks from the 12V rail. I guess I'll order the 680W version with 55A combined 12V and give it a try.

Also I noticed my card does OC much! better with the LN2 mode than in normal mode. In normal mode somehow 1228 are not stable anymore after I reinstalled the card yesterday.
(1228 was definetely stable before last night even 1241 was stable in Valley and games)
It always crashes now in the very begining of Unigine Valley when the loadscreen is gone and the scene is about to be drawn, in the exact moment the change between no load and heavy load happens. During those milliseconds only 6 Power phases are active and somehow they are not capable anymore to handle the clocks. Because the card really barely fits in my case I scratched the PCB on the front a bit when taking the card out. Maybe I damaged it a bit frown.gif
But since in LN2 Mode all phases are active I can even go up to 1280 without any crashes @stock voltage.

Yeah the cpu cooler is pretty massive but my i5-4670k still manages to get pretty hot when given enought juice biggrin.gif

@neoroy

Are you sure it has Samsung memory? I thought rthe second batch cards with B1 Chips all have Hynix memory and the first batch with A1 have Elpida?

The card probably is asking more than your PSU can give. Some on here have measured 900 watts from the wall on a single highly overclocked card. That was with a fairly hungry cpu overclock too though.
Quote:
Originally Posted by Face2Face View Post

Soooooo 1500MHz BF4 stable.... biggrin.gif

https://www.youtube.com/watch?v=vmK3ChEctaQ

Every other game is 1450Mhz stable with good temps -- Still only game @ 1320MHz - without good clocking memory the scalling is pretty meh..

https://www.youtube.com/watch?v=Lf0c9MgAMhY

https://www.youtube.com/watch?v=rZwG2gVsRWI

Seriously impressive! My stable 1415 clock is jealous. tongue.gif
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post #3197 of 5050
Quote:
Originally Posted by Mysterion90 View Post

Thanks smile.gif

It seems I got a really good one, in LN2 Mode 1280 are stable @stock voltage (~1.113-1.121v).

Sadly everything above 1333 is not benchstable. I am thinking it is my power supply. It can "only" output 47A on the combined 12V rails. The frames in Unigine Valley suddenly drop by like 50% allthough when this happens Afterburner still shows the card is clocking with 1360 or whatever I try above 1333.
I think the problem is not the wattage itself but rather the Amperes the card sucks from the 12V rail. I guess I'll order the 680W version with 55A combined 12V and give it a try.

It is definitely your PSU.
My 780 Classy consumes 52A according to GPU-Z at stock Voltage & a some OC.

Get the biggest PSU you can afford, 850 Watt + if you really want to go crazy overclocking.
Edited by rt123 - 3/10/14 at 5:05pm
post #3198 of 5050
Quote:
Originally Posted by paspasero View Post

So I just picked up my second 780 lightning but there is a bit of a problem, the card won't switch into the LN2 bios when I flip the switch. Anyone know what might cause this?

I had to reboot, so it is:
1) turn PC off
2) turn switch
3) boot
4) reboot

only then the LN2 BIOS is loaded.
Quote:
Originally Posted by Bishop07764 View Post


The card probably is asking more than your PSU can give. Some on here have measured 900 watts from the wall on a single highly overclocked card. That was with a fairly hungry cpu overclock too though.

Yeah, I guess so. I just ordered a 680W version. It would be a waste if I don't max this card thumb.gif


I can not imagine the card drawing more than like 450-500W @1400. So the psu does not need that much watt butt rather much on the 12V rail.

Is anyone else experiencing a much better OC in LN2 mode?

Edit:
@rt123

The reading in GPU-Z can't be accurate because it says ~85A under heavy load. My PSU can only handle 47A so it is not possible.
I don't want to some crazy stuff like 1500, if I'm able to reach 1400 with the new PSU I would be perfectly ok with it.
Edited by Mysterion90 - 3/10/14 at 5:14pm
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post #3199 of 5050
Quote:
Originally Posted by Mysterion90 View Post


I just ordered a 680W version. It would be a waste if I don't max this card thumb.gif

I can not imagine the card drawing more than like 450-500W @1400.

Is anyone else experiencing a much better OC in LN2 mode?

My ln2 mode is benchable at 1450 core and +800 memory. My real Crysis 3 stable clocks are 1415 and +600. Mine does seem to overclock higher overall in ln2 mode.
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post #3200 of 5050
Quote:
Originally Posted by tastesfunny View Post

Where did you buy it from? I've been looking for one all over.

I found it through reddit funny enough. I got PM from one of the mods saying he got an offer for one for 400 so he gave me the contact and voila. I have a second 780 lightning for only $400.
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