Potential PSU problem with MSI GTX 970

generaltaco19 · Oct 9, 2014

Hello! I've recently built my PC without my GTX 970, because it was out of stock for a while and actually just came in the mail today. I've been looking over my parts and noticed that the recommended amperage for a 970 was 50, but my 550 W Rosewill Hive apparentlydoesn't provide that, but gets close to doing so. I've asked this question before twice and on one said people said to replace right away and on the other they said it's fine. I really don't want to go through the wait to get a new power supply but if I have to I will. What do you guys think? Thanks! Here's the power supply if you're interested:

http://pcpartpicker.com/part/rosewill-power-supply-hive550

sammy sung · Oct 9, 2014

A single GTX 970 requires minimum 500W and 2X 6-pin connectors. I'd go with at least 600W. Or more if you plan to overclock anything.

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA SuperNOVA NEX 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($64.99 @ NCIX US)
Total: $64.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-10-09 17:42 EDT-0400

generaltaco19 · Oct 9, 2014

sammy sung :

I was actually looking at that PSU as a possibility, thanks for the suggestion! The PSU I have is 550W and has 2 6-pin connectors, so that isn't really the issue. The main issue I see is with the amperage and if my PSU or GPU will malfunction because it's not providing enough on the 12 volt rail. In terms of that, do you think the PSU can handle it, or will I have to get a replacement after all? Thanks!

Dark Lord of Tech · Oct 9, 2014

A GeForce GTX 970 - needs 28 amps on the 12v + rail and a 500 watt power supply with 1 - 6 pin and 1 - 8 pin PCIE power connection.

The NEX 650 is not the greatest power supply , the EVGA B2 , G2 , P2 , and T2 are the great ones.

generaltaco19 · Oct 9, 2014

I've been thinking that I've needed 50 amps on the 12v rail. Since my Rosewill HIVE has the required minimums, is it possible that I don't need to upgrade my power supply? I'm thinking that it'll be a little bit of a hassle and wait if I do return it. I really appreciate that piece of information, thanks!

Dark Lord of Tech · Oct 9, 2014

Your hive has 41.25 amps on the 12v + rail , your all set.

generaltaco19 · Oct 9, 2014

Thank you so much! I've been neglecting to install my 970 because of this, and you just cleared up so much. Thanks again!

sebapee · Oct 22, 2014

How do you count it to 28Amp required, correct me and explain if i'm wrong. but i counted from that gtx 970 is a 145W power card and dividing 145W with 12V rail = 12,08A.

please explain to me since i have Seasonic S12II-620 and it's 48A combined with 2x Rails that have 24A on each +12V Rail, does it matter if it's a dual rail or will it draw power from both rail anyway?

josephcreed7 · Nov 18, 2014

generaltaco19 :

My MSI GTX 970 does NOT perform well with a 550 watt. I will be upgrading to a 650 watt. I just installed this recently, and i'm bummed out how poorly everything is running now. It eats more power than advertised. The amperage is my problem as well!

sagnik paul9 · Dec 3, 2014

is dis psu enough 2 power a gtx 970?? COOLERMASTER EXTREME POWER PLUS 600W
http://www.coolermaster.com/powersupply/extreme/extreme-power-plus-600w/

its has 18+18A in +12 v rails which means 36A will this be enough!!???

josephcreed7 · Dec 8, 2014

sagnik paul9 :

I would recommend not getting a coolermaster power supply. I have one, and i'm not happy with it. Go for a Corsair

sagnik paul9 · Dec 9, 2014

Please recommend me one corsair psu which will be appropriate for GTX 970 and should be within 5000 indian rupees....i see the psu requirment of 970 in the official site is 500 watts.....can u recommend me the best in the price??!!thanx

josephcreed7 · Dec 9, 2014

sagnik paul9 :

No problem, My friend and I built a couple almost identical computers recently with a GTX 970, 8g's of 2400, SSD, Z97 motherboard, Raid 0 Storage hdd's disk drive etc and he is very happy with his Corsair CS650M. I have seen them for as low as 69 bucks. They run around 100 sometimes...Also do not get a thermaltake

Also I want to add; according to my UPS the GTX-970 uses 50-175 watts at stock clock speeds. Most power supplies advertise peak watts, not running watts. Make sure to look into the nitty gritty to see what they actually put out before you buy one. A 480 watt might only put out 380 for example..

sagnik paul9 · Dec 10, 2014

is there a way to cheak that the package promised volt rails r the actual once??means a 500watts really generates 500watts of power??thanx..

josephcreed7 · Dec 10, 2014

sagnik paul9 :

The only thing you can do is run the PSU. Its going to peak automatically. I've dealt with this personally and you really need more than 500 watts for stable performance.

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