Does My power supply support gtx 770?

Toggle sidebar Toggle sidebar
P

Priva

Honorable
Nov 21, 2013
150
0
10,690
Motherboard: Asus p8z68-v le
PSU: HEC 850W 80+ Silver Power Supply (HEC-850TS)
Processor: i7 2600k

Here is what the PSU says:

DC OUTPUT: +3.3 V +5V +12V1 +12V2 +12V3 +12V4 -12V -5VSB
MAX A:---------25A---25A---22A----22A-----24A-----24A--0.6A -3.0A
Total Wattage: 850 Watt

Heard that the GTX 770 needs a total of 44Amps to run. According to my PSU it only has a +12V rail with a MAXIMUM amperage of 22A. However, I do have a molex -> PCI-E power converter basically just connect 2 molex power to the converter and at the end of it you get a PCI-E power connector. And for the second PCI-E connector i'll just use the PCI-E connector on my PSU. 22 + 22 = 44A just what I need. However, I don't know if this method will work and I don't even think that the EVGA GTX 770 has 2 PCI-E 2.0 power connectors I think it's just 6 / 8 pin power connector. So do I need to upgrade my PSU to run it? If so, what is a good PSU that I can buy in order to run it? I'd like it to be ATX because those PSU that has a big long pony tail with no additional connectors is really annoying
 
Sort by date Sort by votes
markwp

markwp

Dignified
Jan 22, 2013
3,183
0
14,960
A 770 only runs about 240w max (roughly 20a). I'm not a fan of split rail psu's, but in your case what I would do is use a 6pin from one rail and a 6+2pin from a second rail. Run the rest of the hardware from a third rail and you should be good to go.

EDIT: As an aside, the HEC psu's are not highly regarded. Be careful with what you run on it. A general rule of thumb I use is to pay a minimum of $1 - $1.25 per 10 watts. For instance, a good 500w unit should cost 500/10=50 x $1 ($1.25) = $50 - $62.50. For an 850w psu, I would expect to spend at least $100.

Mark
 
Upvote 0 Downvote
P

Priva

Honorable
Nov 21, 2013
150
0
10,690
Package Contents:
1 x 6-pin PCI-E Power Adapter
1 x 8-pin PCI-E Power Adapter
So here is how I am planning on doing this correct me if I'm wrong.
I'll insert the graphics card obviously to the PCI Express 2.0 slot on my MB. Then I will connect 1 PCI Express power connector (containing 22 AMPS) then I will use that 8 pin connector and on the other side will be a splitter type thing. Where it will have 2 Sata Connectors -> PCi E power or 2 Molex -> PCI-E power connector. That's what i'm assuming. Because I have no 2 pin conntector on my PSU. So I'll be using that 8 PIN PCI-E power adapter it comes with right? And the 6 pin is probably just the standard PCI-E power which I already have
 
Upvote 0 Downvote
markwp

markwp

Dignified
Jan 22, 2013
3,183
0
14,960


Just leave the two pin leftover dangle next to the gpu.
 
Upvote 0 Downvote
P

Priva

Honorable
Nov 21, 2013
150
0
10,690


Oh, I see. I DO have the +2 pin (I think... photo is below) this is what I have. I have 2 cables just like this. Should I connect them both one without the +2 pin and another one with the +2 pin?
http://imgur.com/hgKL4ky here you can see a photo of the PCI-E power cables. I have 2 of those cables you see in my hand because i'm in crossfire right now. I wonder if I should just use the both of those for power but are those on the same rails? Not sure.

Edit: Also, I didn't know I had the +2 Pin until I looked. I'll leave it dangle like you said. If it doesn't work with it dangled, i'll use it. Why do they have that +2 pin anyway?
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom