GPU Power requirements and problems (GTX 670)

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Nyaa magma

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Jul 15, 2013
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Hello everyone

I have ordered a Inno3D GTX 670 the other day and waiting for it currently to arrive.
Doing some maintenance to my case, i noticed that i don't have 2 6 pin connectors. As the GTX 670 uses 2 6 pins i was worried
Long story short, i have purchased 2 x 4 pin to 6 pin converters and one that splits a 4 pin connector into 2 X 4 pin connectors and i am going to place the other 2 X 4 pin to 6 pin converter to those.

I was wondering, will the GPU have enough power? with the 3 X 4 pins making the 2 6 pin connectors
 
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bryonhowley

bryonhowley

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Oct 24, 2011
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There is no way to tell with out knowing the make/model of the PSU you have. But in general I do not like using splitters because if the PSU does not have them there is a good chance that the PSU does not have the amp's to push the GPU adequately. While that is not always the case so let us know what make/model and we can give you more correct info.
 
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VincentP

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Oct 18, 2013
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What is your power supply model?
What is your CPU model?

Without these I can't give a definite answer, but generally:
You will need at least a 450W power supply, probably higher if your CPU draws a lot of power or the power supply has a low rating on the +12V rail.
If your power supply does not have PCI-E connectors to start with, there is a good chance it is not powerful enough
Most 500W power supplies should be OK.

The molex to PCI-E power adapters that you have purchased use two molex (4 pin) plugs because the PCI-E connector draws more power than one of these plugs can provide.
If you use a splitter for the molex (4 pin), you are back to the problem of trying to draw too much power from this plug.
The power supply needs to be able to supply enough current on the +12V rail.

 
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Nyaa magma

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My CPU: i5 3570k stock (3.7)
PSU: Dont kill me, its a stock COODmax 650 watt PSU ill check the specs now

 
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VincentP

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Any 650W power supply should have at least two 6 pin or 6+2 pin PCI-E power connectors.
 
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Nyaa magma

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The funny thing is the PSU side states that it has one 8 pin and 6 pin but it doesnt, and it is actually 600W
gUSP4xfh.jpg
BvPIcvbh.jpg

 
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VincentP

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Oct 18, 2013
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The 8 pin should be 6+2 pin, so you can use it either as a 6 pin or 8 pin connector.
If you can't see these cables from the power supply, are there plugs on the power supply for modular cables?
 
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Nyaa magma

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The PSU is not modular sadly, i'm planning to upgrade in 2 months
HiOm7GU.jpg

I've check numerous times there is no 6 2 pins or 6 pin connector
 
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VincentP

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The photo you have included shows "6PIN and 8PIN connector", but doesn't state they are PCI-E.
8 pin power connectors for the motherboard are common, often they are two 4 pin plugs together.
These won't fit in an 8 pin PCI-E connector and have different pin layouts.
I have also seem motherboards mention a 6 pin auxiliary power connector, but haven't seen one in use.

If you are looking to upgrade your PSU:
I have always found the Antec HCG series to be good.
Corsair RM series are very good, CX series are OK.
You can't really go wrong with Seasonic, Seasonic G 550 would be great.
 
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Nyaa magma

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Jul 15, 2013
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Hmm okay i'll keep those in mind, thanks for the help friend
 
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