Current PSU For 970 Sli?

Toggle sidebar Toggle sidebar
K

KingTanno

Reputable
Oct 13, 2014
8
0
4,510
Hey everyone. I curently have a desktop system but it is without graphics card cause i was waiting for 900 series.
So what i found out is that 970 seems to be very low on power draw.
I plan to get an asus 970 and then sometime in future add another one for sli.
so my system would look like this:
http://pcpartpicker.com/p/gW3WK8
i put my build on like 6 different wattage calculators online and the biggest wattage i seen was 497 minimum and 547 recommended for my build.
I not sure my ZT650W can survive this, cause i very highly wouldnt prefer changing my psu cause i recently spend my budget on this system and only left money for gpu (in other words no free money for change psu so will be bothersome if i have to change it)
So the question to make it short would be like:
Can ZT650 handle asus 970 sli if i dont overclock anything?
EDIT: Not to make another thread , another question came into my head. Will my cpu be good enough for this sli setup or i will have bottleneck? If it is minor bottleneck i wouldnt mind , but if it is like 60-70% of what should be then.... i will cry x_x
 
Sort by date Sort by votes
MrBrigs

MrBrigs

Reputable
Sep 5, 2014
44
0
4,560
Amps and watts are directly related with power (12*51=your PSU's power) so don't worry about that, your 650w should be able to handle them

but...as to be in safer side...i would go For Corsair RM750 80 Plus Gold....If u can go for that :D.....

Apart From that nice Build :D !!
 
Upvote 0 Downvote
K

KingTanno

Reputable
Oct 13, 2014
8
0
4,510
hmm , im not gonna get both cards right at this moment , so i think i might get something better psu in future when i make the system sli so i dont overheat everything.
So now the second part of question. will my i5-4570 be enough for 970 sli? :3
 
Upvote 0 Downvote
JackNaylorPE

JackNaylorPE

Titan
BANNED
Oct 30, 2004
32,255
14
99,960
I wouldn't use a OCZ PSU, especially when you can get one of much higher quality and enough wattage for $20 cheaper.

Did you include the necessary wattage for your water pump ?
Did you include capacitor aging ?
Did you add wattage for overclocking ?
Using the one below, it only provided 110 watts for a 2nd 970 .... that's very wrong .....145 average .... 165 peak

I got 647 with 25% capacitor aging for the OCZ and ya have to add 100 watts cause the 970
http://extreme.outervision.com/PSUEngine

http://www.guru3d.com/articles_pages/msi_geforce_gtx_970_gaming_review,7.html

Measured power consumption GTX 970

System in IDLE = 120 Watts
System Wattage with GPU in FULL Stress = 278 Watts
Difference (GPU load) = 158 Watts
Add average IDLE wattage ~10 Watts
Subjective obtained GPU power consumption = ~ 168 Watts
Click to expand...

Add 50 watts per card and you at 747 watts

If using the EVGA I'd only add 15% for capacitor aging.

No way no how would I use a 650 watter as it's below the minimum recommended and could result in warranty issues, especially given the quality of the OCZ PSU.

 
Upvote 0 Downvote
K

KingTanno

Reputable
Oct 13, 2014
8
0
4,510
Thanks for all the help. i found that my friend can give me his lightly used psu from old system 850w rated gold so i wont have problems with psu when i go 970 sli :D
 
Upvote 0 Downvote
K

KingTanno

Reputable
Oct 13, 2014
8
0
4,510
https://www.youtube.com/watch?v=anhwXkTN8Nc hmm i was looking for some benchmarks on how much fps i would have @2560x1440 and on this video it show that was 464w power consumption when was playing crysis 3 on 4k with 970 asus sli and 4770K overclocked to 4.5Ghz with other parts being superior to mine (more power usage). So i kinda messed up right now that somewhere show recomend 800w and this video they play 464w with superior system
 
Upvote 0 Downvote
JackNaylorPE

JackNaylorPE

Titan
BANNED
Oct 30, 2004
32,255
14
99,960


850 will work, but be aware Gold has no indication of quality, only how "green" the PSU is.

Another reason I was concerned about the 650 was the cooling on the power components of the Asus 970 PCB is not done very well

On its custom PCB, ASUS places all eight Samsung memory chips on the front side, meaning that the backplate does not directly cool any of them. In fact, the chips are left without any contact plate or heatsink touching them, relying solely on air from the fans to cool them.

We also find a 6-phase power delivery system for the GPU, a 50 percent upgrade from stock specifications.[competition has more] It also uses ASUS's DIGI+ VRM controller for precise, digital voltages, as well as high quality Super Alloy Power components for buzz-free choke operation, longer capacitor lifespan and MOSFETs with a 30 percent higher voltage threshold than standard. Sadly, the memory has not been granted the same treatment. It is fed by a single phase found at the other side of the PCB, and this one does not use any special components.

The MOSFETs of the DIGI+ power phases are cooled by a small heatsink, but the VRM controller and the MOSFETs for the memory power phase are left, like the memory chips, to fend for themselves without direct cooling.
Click to expand...

I'd also drop the H50 cooler as even the newer H55 gets crushed by even the $20 Hyper 212.

CPU-Coolers2.jpg


But since you are not overclocking a 3rd party cooler will serve no purpose.
 
Upvote 0 Downvote
K

KingTanno

Reputable
Oct 13, 2014
8
0
4,510
https://www.youtube.com/watch?v=anhwXkTN8Nc hmm i was looking for some benchmarks on how much fps i would have @2560x1440 and on this video it show that was 464w power consumption when was playing crysis 3 on 4k with 970 asus sli and 4770K overclocked to 4.5Ghz with other parts being superior to mine (more power usage). So i kinda messed up right now that somewhere show recomend 800w and this video they play 464w with superior system
so what about this thingy i said before?
 
Upvote 0 Downvote
JackNaylorPE

JackNaylorPE

Titan
BANNED
Oct 30, 2004
32,255
14
99,960
This isn't really hard

http://www.guru3d.com/articles_pages/msi_geforce_gtx_970_gaming_review,7.html

They measured, with a meter, 168 watts at stock.

Now overclock from 1170 to 1500, add 28% ... conservative at 215 watts.

215 x 2 + 135 watts for OC'd CPU, you already at 565 .... now 5 watts per RAM stick, 10 for HD, 10 for Optical, say 10 watts for fans, you're at 605 .... add 20% for capacitor aging ..... = 726
 
Upvote 0 Downvote
JackNaylorPE

JackNaylorPE

Titan
BANNED
Oct 30, 2004
32,255
14
99,960


Then just redo the math''

170 x 2 + 85 watts CPU, you already at 565 .... now 5 watts per RAM stick, 10 for HD, 10 for Optical, say 10 watts for fans, you're at 605 .... add 20% for capacitor aging ..... = 558. So will be OC, if ya don't OC .... or use heavily in summer.

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=295

he non-primary rails' regulation didn't look all that great, which isn't a huge disappointment, but is a bit of a surprise given the unit's topology. I was also a little bit disappointed that the unit shut down at full load in these hot summer days.
Click to expand...


In the interim, the EVGA PSU has gone up to $105.... was $80 from newegg and had a $30 rebate

 
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