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Enermax 1200w platimax

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June 18, 2012 2:41:56 PM

hi,
can a 1200w enermax platimax psu support 4x 7970's(highly oc'd) in crossfire mode?
note:the psu is only going to be used for the gpu's..not for other components..

thnx in advance
mukit

More about : enermax 1200w platimax

a b ) Power supply
June 18, 2012 2:49:39 PM

Each 7970 is less than 175W stock, maybe 225W OC'd so four of them might peak around 900W, no imminent problem there.
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June 18, 2012 3:16:23 PM

InvalidError said:
Each 7970 is less than 175W stock, maybe 225W OC'd so four of them might peak around 900W, no imminent problem there.


are you sure about that?each card will be oc'd..would 1200w be enough?dont wanna take any risks..lol
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Best solution

a b ) Power supply
June 18, 2012 3:34:20 PM

they use a similar rig as yours
http://www.tweaktown.com/reviews/4581/visiontek_radeon_...

Quote:
It comes as no surprise that power draw jumps up to the top of the pack as the setup breaks over 1000 watts. Of course our Corsair AX1200 had absolutely no issue dealing with this kind of wattage.

you still have enough watts to overclock and add other fancy things.
they ran the test without any issues on a AX1200.
platimax 1200w will easily run your system without any problem,you don't even need two power supplies.BTW,you got a beast of a rig,i am too freakin jealous.
enjoy ;) 
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June 18, 2012 3:42:45 PM

hellfire24 said:
they use a similar rig as yours
http://www.tweaktown.com/reviews/4581/visiontek_radeon_...
http://images.tweaktown.com/content/4/5/4581_42_visiontek_radeon_hd_7970_3gb_video_cards_in_4_way_crossfirex.png
Quote:
It comes as no surprise that power draw jumps up to the top of the pack as the setup breaks over 1000 watts. Of course our Corsair AX1200 had absolutely no issue dealing with this kind of wattage.

you still have enough watts to overclock and add other fancy things.
they ran the test without any issues on a AX1200.
platimax 1200w will easily run your system without any problem,you don't even need two power supplies.BTW,you got a beast of a rig,i am too freakin jealous.
enjoy ;) 


ok,thnx for the info....:) 
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June 18, 2012 3:45:05 PM

Best answer selected by mukitbinazad.
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a c 1200 ) Power supply
June 18, 2012 4:42:00 PM

mukitbinazad said:
ok,thnx for the info....:) 

The TweakTown QuadFire review was done using reference clocked cards and stock voltage (i.e. Core Clock Speed 925 MHz, Memory Clock Speed 1375 MHz).

If you are overclocking to anything like a Core Clock Speed 1250 MHz and Memory Clock Speed 1600 MHz with voltage tweak set at 1.3V your power consumption is going to be in the 310 Watt range for each graphics card during gaming. If you run Furmark with those types of clock settings and voltage tweak you will reach 450 Watts per graphics card.

What are your overclock settings? Your highly oc'd may not be highly oc'd to someone else.
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June 19, 2012 1:52:42 PM

ko888 said:
The TweakTown QuadFire review was done using reference clocked cards and stock voltage (i.e. Core Clock Speed 925 MHz, Memory Clock Speed 1375 MHz).

If you are overclocking to anything like a Core Clock Speed 1250 MHz and Memory Clock Speed 1600 MHz with voltage tweak set at 1.3V your power consumption is going to be in the 310 Watt range for each graphics card during gaming. If you run Furmark with those types of clock settings and voltage tweak you will reach 450 Watts per graphics card.

What are your overclock settings? Your highly oc'd may not be highly oc'd to someone else.


core=1265(might be a bit more..probably max core clock would be 1670)
memory=1570mhz(might be little more or less)
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June 19, 2012 5:27:53 PM

ko888 said:
The TweakTown QuadFire review was done using reference clocked cards and stock voltage (i.e. Core Clock Speed 925 MHz, Memory Clock Speed 1375 MHz).

If you are overclocking to anything like a Core Clock Speed 1250 MHz and Memory Clock Speed 1600 MHz with voltage tweak set at 1.3V your power consumption is going to be in the 310 Watt range for each graphics card during gaming. If you run Furmark with those types of clock settings and voltage tweak you will reach 450 Watts per graphics card.

What are your overclock settings? Your highly oc'd may not be highly oc'd to someone else.


guru 3d.com says that furmark a malicious with gpu's and u get 50w to 100w higher score only cuz of furmark.i think i will be ok with the platimax 1200w....i just cant find a better psu..the 1500w isnt available in the usa...100w oc platimax is not modular and i wont be cooling with ln2..lol....what do you say??
here is the guru3d link....
http://www.guru3d.com/article/amd-radeon-hd-7970-review...

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a c 1200 ) Power supply
June 19, 2012 5:56:37 PM

Just because Guru3D says that Furmark is malicious doesn't prevent anyone from running it. Even OCCT's GPU : 3D stress testing utility causes the same type of power draw as Furmark.

In my earlier post above I said the power draw of an OC'ed Radeon HD 7970 during gaming may reach 310 Watts or more at the clock speeds and voltage tweak I specified. I'm not guessing at these power draw values. The values I've given are actual measured values from the +3.3V and +12V rails of the PCI Express slot and the PCI Express Supplementary power connectors.

You mention that you will be overclocking higher than that so your power consumption during gaming is going to be beyond 310 Watts per graphics card. You will be drawing more than 1200 Watts during gaming from the +12V rails.

I don't think that power supply will last very long running at beyond torture test level (i.e. torture testing = 80% of full capacity) power draw.
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a b ) Power supply
June 20, 2012 8:09:32 AM

you don't need 2x 1200w units,a 1200w will easily run 4x 7970s.throw another good quality 700~ for rest of the system including watercooling system(i hope you don't wanna 4 cards on air)
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June 20, 2012 8:24:32 AM

hellfire24 said:
you don't need 2x 1200w units,a 1200w will easily run 4x 7970s.throw another good quality 700~ for rest of the system including watercooling system(i hope you don't wanna 4 cards on air)


lol?air cooling?are you kidding me man?and am gonna use 2x 1200w unit's..the thing is,i want to run the gpu's off one psu...but ko888 says that it can push the psu to its limits.....so should i use 3 7970's on one psu...and use the other one on the psu that is for the cpu?are you sure that 1200w can handle 4 of em?am gonna do some serious overclocking... :??: 
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a b ) Power supply
June 20, 2012 8:53:11 AM

see total watts is not the main factor,total amps on the +12v rail is the main factor,a heavily overcloked 7970 will need almost 45 amps.enermax platimax 1500w has 180 amps which is enough to run your 4x 7970s.
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June 20, 2012 9:15:04 AM

hellfire24 said:
see total watts is not the main factor,total amps on the +12v rail is the main factor,a heavily overcloked 7970 will need almost 45 amps.enermax platimax 1500w has 180 amps which is enough to run your 4x 7970s.


what?noo!!!am not gonna be using the 1500w...wont the 1200w support em??
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a b ) Power supply
June 20, 2012 9:46:41 AM

most likely not! go with 1500,but if you are gonna use 2x psu then no problem.
i am unable to find any quadfire review.
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June 20, 2012 2:02:16 PM

hellfire24 said:
most likely not! go with 1500,but if you are gonna use 2x psu then no problem.
i am unable to find any quadfire review.


i want to use 1 1200w psu only for the gpu's..but ko888 says that it can push the limits if i use 4 gpu's on one 1200w//...i cant find any reviews too.....tinytomlogan used 3 7970's on one 1200w and the other one one the main psu.....so should i go that way?i mean use 1 psu on the main and he rest on the 2nd?i wanted to use 1 psu for the gpu's,.....cant the 1200w support it?@ko888.what do you say?use 3 gpu's on one psu?
i dont want to fully load the main psu.....thats why i was going to use the cpu's and stuff on it..not the gpu..i hope you guys understand what am trying to say
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a b ) Power supply
June 20, 2012 2:09:23 PM

2x 1200w will run your setup well,throw 3 gpus on one and rest of the setup on other one.
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June 20, 2012 2:10:29 PM

ko888 said:
If you run Furmark with those types of clock settings and voltage tweak you will reach 450 Watts per graphics card.


dude..are you kidding me?if each card reaches 450watts...i wont even be able to run 3 of em from a 1200w..f*** furmark lol....
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a b ) Power supply
June 20, 2012 2:13:32 PM

^mind your language pal.
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June 20, 2012 3:52:46 PM

hellfire24 said:
^mind your language pal.


lol,sorry about that.....ok then....am putting 3 7970's with one 1200w.... :) 
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a b ) Power supply
June 20, 2012 4:57:18 PM

^yes you will do great,you got such a monster rig,i just imagine if you had 680s.but it doesn't matter.
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a c 1200 ) Power supply
June 20, 2012 6:09:22 PM

mukitbinazad said:
dude..are you kidding me?if each card reaches 450watts...i wont even be able to run 3 of em from a 1200w..f*** furmark lol....

The answer to that is don't run Furmark or any equivalent GPU stability testing tools.
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June 21, 2012 8:03:33 AM

ko888 said:
Get a LEPA G Series G1600-MA 1600W PSU. It's made by Enermax for LEPA since the parent company Ecomaster owns both Enermax and LEPA.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Reputable review from JonnyGuru.com on April 17, 2012:

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


as i have said earlier,am was going to use 1 psu for the psu..but as the 1200w cant handlethe quad 7970's..am gonna put 1 7970 with the first psu..and put the rest with another 1200w....am not buying lepa g..i dont want to put everything on the lepa g even though its 1600w......
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a c 1200 ) Power supply
June 21, 2012 8:16:56 PM

hellfire24 said:
don't you think 1200w will handle 3x 7970s?

As long as you don't run Furmark or OCCT GPU stress testing it should be able to handle three highly overclocked, voltage tweaked XFX R7970 Black Edition Double Dissipation cards.
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June 22, 2012 7:39:36 AM

ko888 said:
As long as you don't run Furmark or OCCT GPU stress testing it should be able to handle three highly overclocked, voltage tweaked XFX R7970 Black Edition Double Dissipation cards.

can you plz recommend an app?
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a b ) Power supply
June 22, 2012 12:13:08 PM

mukitbinazad said:
can you plz recommend an app?

I think he has already recommended "anything that is not specially designed to stress everything to 110%", namely: any non-synthetic application/game benchmark or in other words: real-world applications and games.

Stress-test benchmarks are artificially structured to create some of the worst-of-the-worst loads possible in ways that never occur in real applications and games.
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June 22, 2012 12:18:28 PM

InvalidError said:
I think he has already recommended "anything that is not specially designed to stress everything to 110%", namely: any non-synthetic application/game benchmark or in other words: real-world applications and games.

Stress-test benchmarks are artificially structured to create some of the worst-of-the-worst loads possible in ways that never occur in real applications and games.


well,can i benchmark by running a game like bf3 or something?
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a b ) Power supply
June 22, 2012 12:26:50 PM

^yes of course.
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!