Sign in with
Sign up | Sign in
Your question

Gigabyte GeForce GTX 780 Ti GHz Edition & Asus p6t deluxe v2 motherboard power problems

Last response: in Components
Share
July 16, 2014 3:28:53 PM

hi. i just got my new Gigabyte GeForce GTX 780 Ti GHz Edition today.
it has 2x 8-pin power connectors, and ofcourse my psu only has a bunch
of 6-pin connectors (not 6+2, just 6-pin).
it came with 2 double 4-pin molex to 8-pin adapters, unfortunately my psu
only has 2 molex serial cables (i assume they are meant for
harddrives primarily), enough for only one of the adapters/connectors.

i have various other adapters, all but the needed 6-pin to 8-pin adapter.

i was able to get my machine to boot with the card by connecting 1
molex from each cable into my 2 adapters. this means i only have half
the power right? so as you might expect, as soon as my card starts
to draw more power, as in when i started SWTOR, my machine shuts down.

i read here: http://www.playtool.com/pages/psuconnectors/connectors.... that
"It's okay to plug a 6 pin PCI Express power cable into an 8 pin PCI Express
connector. It's designed to work that way but will be limited to the lower
wattage provided by the 6 pin version of the cable."

so i tried to connect one of my adapters properly into the first 8-pin slot,
with 2 molex connectors from different cables (with no other connections
on them). and i tried to connect the other
with one 6-pin connector. it fits, just as the guide says. but when i try to
boot, i get a message on screen saying i have to connect the power cables
to this VGA. tried to switch slots, same message.

while browsing for answers i have seen others say that this should work, but it doesn't.
so i'm wondering if anyone knows if my card in reality does have enough power
with 8-pin + 6-pin and if my motherboard shows this message unnecessarily?
and if so, is there a way to bypass this message, for instance in the bios
settings. i'm not able to tell myself. the message does not have an ignore
option by pressing f1 for instance, no way to skip as far as i can tell.

i know i should just order the right adapters, and i will, but i would really
like to get my card working tonight, and until they arrive in the mail.

my psu is a OCZ 1000W something-something, and it has served me well so far,
and should be plenty power.

update: i'm thinking of getting an Add2psu or something like it, since i have i couple
of old ones laying around doing no good. described here: http://www.extremetech.com/computing/91808-add2psu-how-...
does anyone have any experience with one of these?

thanks for any replies in advance.
a b ) Power supply
July 16, 2014 10:54:16 PM

I can't really diagnose the problem but you realise that the giggabyte 780 ti ghz edition has had some major problems with it in the past?
m
0
l
July 16, 2014 11:04:09 PM

legend001523 said:
I can't really diagnose the problem but you realise that the giggabyte 780 ti ghz edition has had some major problems with it in the past?


nope not heard. but i've decided to buy a new psu, my old one wasn't very future-proof it seems. OCZ apparently didn't think that 8-pin pcie connectors would be used. i've ordered a EVGA SuperNOVA 1300 G2, it has alle the connector's i could need, including 6x 6+2 pcie ones. still weird that i couldn't get the card to boot with one 8-pin and one 6-pin connectors.
m
0
l
a b ) Power supply
July 16, 2014 11:09:08 PM

theGrimSleepah said:
legend001523 said:
I can't really diagnose the problem but you realise that the giggabyte 780 ti ghz edition has had some major problems with it in the past?


nope not heard. but i've decided to buy a new psu, my old one wasn't very future-proof it seems. OCZ apparently didn't think that 8-pin pcie connectors would be used. i've ordered a EVGA SuperNOVA 1300 G2, it has alle the connector's i could need, including 6x 6+2 pcie ones. still weird that i couldn't get the card to boot with one 8-pin and one 6-pin connectors.



ahh nice
m
0
l
Related resources
!