700W Power for 670 SLI

I currently have a OCZ ModstreanX 700W Power Supply. I plan on running a 670 SLI setup with the following:
 
1x 7.2k HDD
2x SSD
i5 2500k, not overclocked
 
Do you think this will work? Thanks!

I have 3 670s and an OC i7-930 and 3 SSDs and 2 HDDs and my rig never pulls over 400W from the wall. So should be good.
(have 875W Toughpower XT for comparison's sake)
 

Look at your drive and fans labels, they indicate 12v amp requirement, less than 1A each.  Each GTX670 draws 170W (14.3A each).  Your 2500K at stock is around 70W (6A at 12v).  Add it up and it will be less than your PSU's max allowed amperage of 46A (see your PSU label for max allowed wattage from multiple rails, then divide by 12).
 
Bookmark any links and remember your labels, I expect for each additional upgrade, you should be able to figure this out on your own.
 
Remember, total wattage doesn't tell you much, the total 12v amp value matters.

433w @ full load GTX 670 SLI
http://www.guru3d.com/article/geforce-gtx-670-2-and-3way-sli-review/4
Yes, you are fine. BUT That PSU is not that great, it will need to be replaced after about 2-3 years of use.
http://www.hardocp.com/article/2008/11/12/ocz_700w_modxstream_pro_power_supply/7
 
I've owned 2 of those OCZ GameXtreme PSU's, both lasted me about 2 years. Their regulation is pretty bad and they can't handle their rated wattage. I would recommend looking for a new PSU in the near future. OCZ makes decent PSU's now because they use different OEM's now, but those Xtreme PSU's were made with pretty poor quality.
 
I'd recommend something simple like a Corsair TX750M. 

lele0108

I currently have a OCZ ModstreanX 700W Power Supply. I plan on running a 670 SLI setup with the following:

1x 7.2k HDD
2x SSD
i5 2500k, not overclocked

Do you think this will work? Thanks!

 
Its time to overclock 

Thanks everybody! I'll try with my current power supply. 

it will work

ferret_dude

I have 3 670s and an OC i7-930 and 3 SSDs and 2 HDDs and my rig never pulls over 400W from the wall. So should be good.
(have 875W Toughpower XT for comparison's sake)

sorry but that is 100% impossible if you are actually playing games. just 3 stock gtx670 cards alone would pull well over 400 watts at the wall under load. and your cpu would add way over 100 watts to that plus your other components. even my single gtx670 2500k system pulls close to 300 watts at times in some games. 
 
EDIT: up to 701 watts in games using gtx680 tri sli with a cpu that uses less power than yours. a gtx680 only uses about 30 watts more than a gtx670 but if you have the gtx670 cards oced then that is a wash as the power consumption would be just as high. http://www.hardocp.com/article/2012/04/25/geforce_gtx_680_3way_sli_radeon_7970_trifire_review/8

trek554

ferret_dude

I have 3 670s and an OC i7-930 and 3 SSDs and 2 HDDs and my rig never pulls over 400W from the wall. So should be good.
(have 875W Toughpower XT for comparison's sake)

sorry but that is 100% impossible if you are actually playing games. just 3 stock gtx670 cards alone would pull well over 400 watts at the wall under load. and your cpu would add way over 100 watts to that plus your other components. even my single gtx670 2500k system pulls close to 300 watts at times in some games. 

how the hell are you going to tell him what his set up can and not do,he is good enough with the 875 touchpower especially if its good quality theres other people that run 3 sli off of only 875W you should do your research and stop the bull its getting annoying already

Jim1590

trek554

ferret_dude

I have 3 670s and an OC i7-930 and 3 SSDs and 2 HDDs and my rig never pulls over 400W from the wall. So should be good.
(have 875W Toughpower XT for comparison's sake)

sorry but that is 100% impossible if you are actually playing games. just 3 stock gtx670 cards alone would pull well over 400 watts at the wall under load. and your cpu would add way over 100 watts to that plus your other components. even my single gtx670 2500k system pulls close to 300 watts at times in some games. 

how the hell are you going to tell him that he is good enough with the 875 touchpower especially if its good quality theres other people that run 3 sli off of only 875W you should do your research and stop the bull its getting annoying already

please read more carefully.  I said his claim that he only pulls 400 watts max at the wall with that gtx670 tri sli system is not true. 

I measured that ~400W while running Furmark and LinX with FurMark having a higher priority. If you can think of a way to tax a system harder, let me know. The Nvidia drivers are still not great and I was probably sitting at 85-90% on each GPU at around 1125MHz at the time. The 400W was confirmed both by an in-line meter and the UPS that only the PC is plugged into.
I will retry it when I get home.

ferret_dude

I measured that ~400W while running Furmark and LinX with FurMark having a higher priority. If you can think of a way to tax a system harder, let me know. The Nvidia drivers are still not great and I was probably sitting at 85-90% on each GPU at around 1125MHz at the time. The 400W was confirmed both by an in-line meter and the UPS that only the PC is plugged into.

then your cards were either backing off or not getting close to fully loaded. it takes nothing more than common sense or looking at reviews to know there is no way a 670 tri sli system with oced Bloomfield cpu would only hit 400 watts at the wall under full load.  its really scary that you do not even realize how silly that sounds when even stock gtx670 system with a cpu like yours would use over 300 watts under load. 

well I was quite surprised by the ~400W result as my dual 460 setup used about ~575W.
 
oh and I'm not stupid, vsync was not enabled in FurMark, I was running 1920x1200 with 8xMSAA. and getting about 68fps.

ferret_dude

well I was quite surprised by the ~400W result as my dual 460 setup used about ~575W.

oh and I'm not stupid, vsync was not enabled in FurMark, I was running 1920x1200 with 8xMSAA. and getting about 68fps.

then that alone should tell you  that the cards are not being fully loaded or something else is wrong. 

In the link I provided above shows 433w during full load on a SLI GTX 670 set-up with a i7 965 @ 3.75GHz with 1.35v. He's using a little less voltage on his overclock, it should only use about 400w. 

Also, the GTX 680 uses 34w more than a GTX 670. If your going to do tri SLI, that's 102w more without adjusting the GPU vcore.

Here it is again:
http://www.guru3d.com/article/geforce-gtx-670-2-and-3way-sli-review/4 

RainStryke

In the link I provided above shows 433w during full load on a SLI GTX 670 set-up with a i7 965 @ 3.75GHz with 1.35v. He's using a little less voltage on his overclock, it should only use about 400w. 

Also, the GTX 680 uses 34w more than a GTX 670. If your going to do tri SLI, that's 102w more without adjusting the GPU vcore.

Here it is again:
http://www.guru3d.com/article/geforce-gtx-670-2-and-3way-sli-review/4 

what? take off 102 watts from my link and that's still almost 600 watts in Deus Ex and that is with a more efficient cpu than his.  there is no math in the world that could make him end up with 400 watts under max load for 670 tril sli and oced 930.  even your own link shows 583 watts for 670 tri sli. 

Well I don't know what to believe now.
I slammed the 670s to 120% TDP, +150clock, +300mem and took AA off furmark and still couldn't push more than 470W on the meter.
 
However the UPS then said I was using 910VA....
 
The meter has always been accurate (+/-1W) before and is supposed to be good to 2750W. And the UPS is generally +/- 50W (very coarse). 
And the Power Factor on the meter was above 90% the whole time so that doesn't account for it unless the UPS was doing some crazy PF correcting before sending it through the meter.

If it was 910VA it's a wonder the PSU didn't blow up.

trek554

RainStryke

In the link I provided above shows 433w during full load on a SLI GTX 670 set-up with a i7 965 @ 3.75GHz with 1.35v. He's using a little less voltage on his overclock, it should only use about 400w. 

Also, the GTX 680 uses 34w more than a GTX 670. If your going to do tri SLI, that's 102w more without adjusting the GPU vcore.

Here it is again:
http://www.guru3d.com/article/geforce-gtx-670-2-and-3way-sli-review/4 

what? take off 102 watts from my link and that's still almost 600 watts in Deus Ex and that is with a more efficient cpu than his.  there is no math in the world that could make him end up with 400 watts under max load for 670 tril sli and oced 930.  even your own link shows 583 watts for 670 tri sli. 

 
My bad, thought ferret_dude had SLI and not tri, yes, you are correct.