Running GTX 660 with 380W PSU?

Toggle sidebar Toggle sidebar
R

rig3rous

Distinguished
Nov 13, 2010
51
0
18,630
I have an antec 380W PSU

Besides the fact that it only has 1 6-pin connecter and I'll have to use an adapter (two molex to 6 pin), do you think it will have enough power to support this beast?

Complete system is an AMD Phenom II x4 (not sure about exact model)
Some old IDE HDD, and one SATA Drive (7200rpm, nothing fancy).
Right now it's running an AMD HD 7770 no problem...

The reason I got that PSU is because I was on a budget and I don't remember which forum I posted on but people were saying it is a good budget PSU that actually puts out higher than it is rated.
 
Sort by date Sort by votes
R

rig3rous

Distinguished
Nov 13, 2010
51
0
18,630


I double checked, looks like you are right. I quickly googled an image of the 660 and I must have not realized I was looking at another GFX. I'm going to ask two more questions so I'll never have to ask this type of question again (teach a man to fish right?): How can I determine what the actual draw of a video card is (good 'ol research?) and what do you think is the most powerful card out this PSU can handle as of now?
 
Upvote 0 Downvote
tachybana

tachybana

Distinguished
Feb 11, 2013
727
0
19,310
Any of the chipmakers (nvidia / AMD or manufacturer (Gigabyte, Asus, MSI etc etc) site can tell you what is the Required PSU Wattage to operate each type of GPU (or you can cheat with pcpartpicker.com to give you a compatible PSU based on all of your componet wattage.

Best LUck
 
Upvote 0 Downvote
R

rig3rous

Distinguished
Nov 13, 2010
51
0
18,630
Aww crud I accidently chose the best answer when trying to reply *facepalm* Sorry Onus I was going to pick you!!

What I was trying to reply.... The manufacturers always overestimate as a safe cushion to protect themselves from legal action, no?
 
Upvote 0 Downvote
Onus

Onus

Titan
Jan 27, 2006
37,037
12
89,965
Well, there are web sites that list what various cards use (e.g. http://forums.atomicmpc.com.au/index.php?showtopic=264 ), but for maximums, there's a quick and dirty method. Count the connectors, and consider their maximum allowed draw per standards. The PCIe slot itself is rated for 75W. A single 6-pin PCIe cable can provide another 75W. That means a GTX660 cannot use more than 150W (12.5A). A card with two such connectors cannot pull any more than 225W (almost 19A). Accordingly, your PSU can handle any graphics card with a single 6-pin connector, but may not be able to handle those with two, unless it just barely needs that second connector (e.g. it draws 180W, or 15A).
 
Upvote 0 Downvote
Onus

Onus

Titan
Jan 27, 2006
37,037
12
89,965
Manufacturers overstate requirements in the attempt (sometimes futile) to account for the liar-labeled junk PSU-shaped objects still being sold (e.g. Logisys, Apevia, Diablotek, Sunbeam, etc).

I have unmarked the BA so you may select the one you prefer.
 
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