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Power connections on MSI GTX 770

Tags:
  • Gtx
  • Graphics
  • Power
  • MSI
  • PCI Express
Last response: in Graphics & Displays
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July 24, 2014 5:47:51 PM

First time building a PC in ages. Got to the final step, installing GPU. Never used PCI-E or really any decent card before.

My question is about the top power connectors. on the NVIDIA guide it says there should be a 6 pin and an 8 pin connector, however my card has two 8 pin connectors.

My PSU cable labeled PCI-E has two sets of 6 pin and 2 pin that can snap together. I'm guessing this means I need to combine both of those and use them both on the single card. Is that right?

I also have these two little 6 pin to 8 pin adapters, but I don't remember if they came with the GPU or another component. I'm not sure if these are meant to be used here.

Thanks for the help!

More about : power connections msi gtx 770

Best solution

July 24, 2014 5:50:05 PM

Some non-reference cards uses two 8 pin PCIE to provide more power.
Yes the 6+2 pins PCIE are used to fit into the 8 pin slots. You need two 6+2 pin PCIE from your power supply.
You shouldn't need the adapters really. Your power supply should have them already.
What is your power supply? Brand and model?
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July 24, 2014 5:55:54 PM

Yep^^ - you should be good with just snapping the 6+2 together, as long as your PSU is capable of course.
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July 24, 2014 6:03:49 PM

Thanks guys! PSU is the Corsair CX600M I just saw that 600W is the minimum NVIDIA recommends so hoping for the best!

Super stoked! If anyone cares, other parts are
Intel i7-4790
ASUS H971+ Mini ITX
16GB Ballistix
240GB SSD
1TB HDD

First PC I've built since around 2004
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July 24, 2014 6:09:19 PM

turleyn said:
Thanks guys! PSU is the Corsair CX600M I just saw that 600W is the minimum NVIDIA recommends so hoping for the best!

Super stoked! If anyone cares, other parts are
Intel i7-4790
ASUS H971+ Mini ITX
16GB Ballistix
240GB SSD
1TB HDD

First PC I've built since around 2004


Sounds good man, I have the exact same card, and I hooked it up using just one psu cable with the two connectors (like you said "My PSU cable labeled PCI-E has two sets of 6 pin and 2 pin that can snap together. I'm guessing this means I need to combine both of those and use them both on the single card. Is that right?").
Also you do not need to worry about those adapters, those are only needed if your psu does not have the proper cables (they came with the graphics card).
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July 24, 2014 6:09:47 PM

I wouldn't trust that psu....that gpu is a fairly power hungry card....
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July 24, 2014 6:14:15 PM

Can an underpowered system damage components? Any way to know how the load is doing?
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July 24, 2014 6:15:25 PM

Don't worry about your power supply. It supplies enough power for your build.
Yes the quality isn't great compared to Seasonic unit or XFX but it should be still fine to use.
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July 24, 2014 6:16:12 PM

Fidgetmaster said:
I wouldn't trust that psu....that gpu is a fairly power hungry card....


With 600W he should be fine! The graphics card recommends 42amps, and this psu has 46amps, so he should have no problems.
GuruReview
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July 24, 2014 6:17:56 PM

It might run it for awhile...with the 770...but you are brave....I think it would blow up sooner or later.....and probably take the card with it....
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July 24, 2014 6:22:01 PM

Fidgetmaster said:
It might run it for awhile...with the 770...but you are brave....I think it would blow up sooner or later.....and probably take the card with it....


Why do you say that, because of the quality of the psu?
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July 24, 2014 6:24:49 PM

Yes it is not that good of quality....I would be far more comfortable with a decent 650-750w unit....
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July 24, 2014 6:26:39 PM

Fidgetmaster said:
Yes it is not that good of quality....I would be far more comfortable with a decent 650-750w unit....


Comfort zone is a personal thing.
A quality 550W that has at least 40 Amps on the 12V rails will be sufficient in powering your pc config.
Your power supply meet the requirement already.
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July 24, 2014 6:29:24 PM

Fidgetmaster said:
Yes it is not that good of quality....I would be far more comfortable with a decent 650-750w unit....


3D Guru stated this
Quote:
In theory this PSU could hold two GeForce GTX 760 cards

http://www.guru3d.com/articles_pages/corsair_cx600m_psu...

Quote:
Comfort zone is a personal thing.
A quality 550W that has at least 40 Amps on the 12V rails will be sufficient in powering your pc config.
Your power supply meet the requirement already.


I wouldn't agree with this entirely, he should have at least the recommended amps for the card which is 42 Amps not 40 (He has 46 so he's fine).
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July 24, 2014 6:30:21 PM

The CX series is not quality....I think you fail to realize that... lots reports of them blowing up and taking the gpu with them when pushed close to their limits....
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July 24, 2014 6:32:08 PM

Any way to monitor power usage? I don't game I write graphics intensive applications. So really I have no clue how hard I'm going to push this card.
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July 24, 2014 6:33:24 PM

In theory that is haha, go ahead use it....I sure as heck wouldn't because they are simply known to fail out of nowhere....
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July 24, 2014 6:33:51 PM

turleyn said:
Any way to monitor power usage? I don't game I write graphics intensive applications. So really I have no clue how hard I'm going to push this card.

Sure you can! Use MSI afterburner to monitor the power your GPU is using!

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July 24, 2014 6:35:57 PM

Well if you don't plan to stress/load system that much you might be okay...
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