7970 on corsair VX450 PSU

hitec16 · May 22, 2013

hey!! Do u guyz think I can run a 7970 with corsair VX450 PSu?

my specs are

MSI Z77A-GD65
intel i5 3570k
4x2GB DDR3 RAM
1x500GB HDD 7200RPM
1x60GB SSD OCZ agility3
5x120mm Fans
MSI 7850 2GB power edition

ksham · May 22, 2013

Sure; just put the card on standby or don't use it much at all. At full load, the HD 7970 will log up half of your PSU total power, so that won't work.

Answers: Theoretically, yes. Practically, no.

cbrunnem · May 22, 2013

you could... it would be pushing it. my 7970 pulls about 430 from the wall average. any spikes would crash your system(bsod). you might be able to get away with it if you didnt overclock.

the benchs you see you will need to add 70-100 watts to most likely due to them only stressing the gpu and not the gpu. that 430 is from bf3 btw

hitec16 · May 23, 2013

ok so I need to upgrade just to be on a safe side... I have a 1600x900 resolution 20inch monitor so with v-sync enabled I won't be stressing the GPU much right? and from what I know vx450 is an underated psu it can deliver upto 500W easy and 550 would be pusing it.

what I am suggesting it is can I buy 7970 and use it for like a month or two with vx450 and then upgrade to some CM or corsair 750W psu....what would u guyz suggest?

ksham · May 23, 2013

AMD Radeon cards do not have adaptive vsync.

I think we already answered that question. Whether it is a month or a year, it doesn't matter.

smeezekitty · May 23, 2013

ksham :

Who mentioned Adaptive Vsync?

In any case RadeonPRO can mimic it.

coozie7 · May 23, 2013

@ hitec16: The VX450 is an impressive unit:

http://www.hardwaresecrets.com/article/540

I do n't think it will have too many problems driving a 7970, the only downer is that it lacks the 8 pin PCI-E connectors needed to power the card and I think it would be suicidal to drive such a power hungry component off molex/PCI-E adaptors.
Do yourself a favour, get a powersupply with the right connectors.

hitec16 · May 23, 2013

alright I have following options forthe power supplies please let me know which one is the best in performance coz i a bit confused with cm gold series psus
1. Cooler Master Silent Pro Gold 600W link http://www.coolermaster.com/product/Detail/powersupply/silent-pro-gold/silent-pro-gold-600w.html

the max output is 720W!!
.
.
2.Cooler Master Silent Pro M2 720W
link below
http://www.coolermaster.com/product/Detail/powersupply/silent-pro-m2/silent-pro-m2-720w.html

so what do u guyz think ??

ksham · May 23, 2013

coozie7 · May 23, 2013

They're OK, but better makers exist: Antec, Seasonic, Silverstone, XFX, Pcpower and Cooling, FSP and Corsair are pretty much the Gold Standard.
Where are you? Prices and availability vary according to country, perhaps we can guide you to something better/ cheaper.

ksham · May 23, 2013

The Cooler Master Silent Pro and the Cooler Master Silent Pro M are actually really good quality PSUs. There are better choices for manufacturers of course, but that doesn't deter the fact that the Cooler Master Silent Pro editions are good PSUs. I agree that they aren't the cheapest options.

hitec16 · May 24, 2013

I am in New Delhi, India so my options are bit limited as no. of products sold here are rather limited...All the options I am considering are those that are avaliable btw I found corsair 850TXV2 here as well its manufactured by seasonic but its not modular.

timil · May 24, 2013

CM are average get an Antec HCG-520 it's cheap and damn good quality it will drive a 7970 or a 500+ Corsair unit but see the OEM of the unit too and find the reliable output. You can even drive a 7970 off of a super cheap Antec VP550. It has 2 6+2 connectors and it should be enough to drive a 7970 quite safely and it's cheaper than the HCG-520.

hitec16 · May 26, 2013

timil :

well antec psu arent available here easily and only those models are available that are very expensive

i think i will go for cm silent pro m2 720W

smeezekitty · May 26, 2013

It should be ok. It isn't one of coolermaster's really bad ones.

hitec16 · May 26, 2013

just checked corsair tx750 v2 is avaliable for cheaper price

and is manufactured by seasonic!! perhaps I will go for that I trust seasonic psus... only thing i loose is modular cable but wth i have corsair 500R cabinet so there is enough space to put all cables behind mobo tray

hitec16 · May 26, 2013

can 7970 xfire or gtx680 sli run on corsair tx 750 v2??

berny22 · May 26, 2013

Lol i have the same ssd and the same hdd as you...

cbrunnem · May 27, 2013

hitec16 :

absulutely. i did it on a 650 watt psu before.

ksham · May 27, 2013

hitec16 :

I would recommend 800W, but a quality 750W like that Corsair one is fine. I would definitely not go with 650W.

cbrunnem · May 27, 2013

ksham :

have you done it on a 650watt corsair psu??? hmmmm didnt think so... i have. i know 650 isnt recommend but its what i had and it worked. i wasnt recommending a 650w psu just merely saying a 750 is more then enough since 650 is enough but guess you couldnt wrap your head around that.

ksham · May 27, 2013

I didn't say you were lying or that you were explicitly recommending it. However, if I were in OP's situation and I were to buy a PSU and the 650W is cheaper and you said that it worked, I would be most likely opt to buy a 650W. You didn't explicitly state it but I just want to make a point that I don't recommend OP to try it.

hitec16 · May 29, 2013

Thanks guyz I belive than corsair TX750V2 should be fine to run 7970in xfire and is future proof aswell considering the next gen of gfx cards will demand less power than what current generation require. So I am going for 750W

7970 on corsair VX450 PSU

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