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Diablotek 775W SLI Question - Page 2

post #11 of 30
Hey Dr.

Yeah what everyone else said, Anyway.. When I ran a 580 SLI, I ran it on a good 750w PSU.. I ended up getting the FSP AU-1000PRO because with F@H (folding at home) I would actually draw over 750w from the PSU itself (1100T & high OC's on the Lightning Xtreme's mind you)

The best option for a 580 SLI, so you can OC to your hearts content aswell as run any type of stress programs easily, would be a good 850w.

Whenever you switch to the 600 or 700 series, you'll obviously be using alot less of the PSU, but for now, get something that can run those 580's under any circumstances.

XFX PRO850W XXX Edition $125 shipped w/ promo -$20 MIR = $105
NZXT HALE90 850w $150 Helluva PSU.
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post #12 of 30
Quote:
Originally Posted by jagz View Post

Hey Dr.
Yeah what everyone else said, Anyway.. When I ran a 580 SLI, I ran it on a good 750w PSU.. I ended up getting the FSP AU-1000PRO because with F@H (folding at home) I would actually draw over 750w from the PSU itself (1100T & high OC's on the Lightning Xtreme's mind you)
The best option for a 580 SLI, so you can OC to your hearts content aswell as run any type of stress programs easily, would be a good 850w.
Whenever you switch to the 600 or 700 series, you'll obviously be using alot less of the PSU, but for now, get something that can run those 580's under any circumstances.
XFX PRO850W XXX Edition $125 shipped w/ promo -$20 MIR = $105
NZXT HALE90 850w $150 Helluva PSU.

Both are good units. XFX has SeaSonic make all their stuff now which is good. I'm wary of their horrible warranty service though. I doubt that PSU will ever have any issues, but if it does... frown.gif God help you.

Not a bad suggestion there jagz. thumb.gif
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post #13 of 30
Quote:
Originally Posted by DrBrogbo View Post


Sweet merciful crap, THAT bad? Greeeeaaaaat.
What kind of power supply would you recommend I replace it with? I'd like to keep it future proof, but don't need anything crazy. Everything is getting more efficient, and the most I'd ever have is an overclocked i7 and 2 graphics cards. I would imagine an i7 and SLI 680s would run comfortably on a quality 800+, right?
I don't want to be spending $250 or anything, but if my current PSU is really that bad, then looks like my hands are tied.

 

An i7 with two 680s in SLi would only need a quality-made 550W power supply:

 

http://www.guru3d.com/articles_pages/geforce_gtx_680_sli_review,4.html

 

With two GTX 680s in SLI under full load in their test system, their power supply pulled 473W from the wall outlet.  Their CPU was idling, so let's add about 150W to make up for it.  This would make the power supply pull about 623W from the wall outlet if the 680s and the CPU were under full load simultaneously.  So, now the question is how much power the system is pulling from the power supply.  Well, if we assume that their PSU is 85% efficient while pulling 623W from the wall outlet, then that would mean the system is pulling about 530W (529.55W) from the PSU.  This means that a quality-made 550W power supply would be more than enough because quality-made power supplies are designed to be able to continuously deliver their rated wattage (that is, nonstop 24/7).

 

Right now, the very best power supplies on the market are the modular versions of Rosewill's CAPSTONE Series.  At Newegg, the 550W model is $79.99 shipped, the 650W model is $111.98 after shipping, and the 750W model is $125.98 after shipping.  These are ridiculous prices because the PSUs that Rosewill used in order to make these are Superflower Golden Green Pro units.  That means these are top-of-the-line, 2nd to none.

 

At $79.99 shipped for the 550W model, it would be foolish to buy anything else.

 

However, if you were to add a 2nd GTX 580, then a quality-made 750W power supply would be needed:

 

http://www.guru3d.com/articles_pages/geforce_gtx_580_sli_review,14.html

 

719W from the wall, adding 150W and then factoring in 85% efficiency results in about 738W being pulled from the PSU if the 580s and the CPU were under full load simultaneously.

 

 

Quote:
Originally Posted by DrBrogbo View Post


I created a list of my current computer. I can't imagine my current PSU needs are all that high, but I will definitely be upgrading in the future when Intel puts out their new tock release, and Nvidia releases their 700 series (either a 700 series, or 600 series if the price drops enough).
I also understand a PSU will operate most efficiently closer to the middle of its rated output, so I have no problem buying an 850 to power a 650W system. Just don't want to go overboard and buy a PSU rated for quad-sli or anything.

 

That 50% load thing is a bit misunderstood:

 

On PSU Efficiency

 

PSU "50% Load" Myth

 

More good PSU articles

 

So really, a quality-made PSU like the 550W modular Capstone would be excellent if you had two GTX 680s.  Or for two GTX 580s, a quality-made 750W PSU would be excellent.


Edited by TwoCables - 10/30/12 at 11:10am
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post #14 of 30
Quote:
Originally Posted by TwoCables View Post

Warning: Spoiler! (Click to show)
An i7 with two 680s in SLi would only need a quality-made 550W power supply:

http://www.guru3d.com/articles_pages/geforce_gtx_680_sli_review,4.html

With two GTX 680s in SLI under full load in their test system, their power supply pulled 473W from the wall outlet.  Their CPU was idling, so let's add about 150W to make up for it.  This would make the power supply pull about 623W from the wall outlet if the 680s and the CPU were under full load simultaneously.  So, now the question is how much power the system is pulling from the power supply.  Well, if we assume that their PSU is 85% efficient while pulling 623W from the wall outlet, then that would mean the system is pulling about 530W (529.55W) from the PSU.  This means that a quality-made 550W power supply would be more than enough because quality-made power supplies are designed to be able to continuously deliver their rated wattage (that is, nonstop 24/7).

Right now, the very best power supplies on the market are the modular versions of Rosewill's CAPSTONE Series.  At Newegg, the 550W model is $79.99 shipped, the 650W model is $111.98 after shipping, and the 750W model is $125.98 after shipping.  These are ridiculous prices because the PSUs that Rosewill used in order to make these are Superflower Golden Green Pro units.  That means these are top-of-the-line, 2nd to none.

At $79.99 shipped for the 550W model, it would be foolish to buy anything else.

However, if you were to add a 2nd GTX 580, then a quality-made 750W power supply would be needed:

http://www.guru3d.com/articles_pages/geforce_gtx_580_sli_review,14.html

719W from the wall, adding 150W and then factoring in 85% efficiency results in about 738W being pulled from the PSU if the 580s and the CPU were under full load simultaneously.



That 50% load thing is a bit misunderstood:

On PSU Efficiency

PSU "50% Load" Myth

More good PSU articles

So really, a quality-made PSU like the 550W modular Capstone would be excellent if you had two GTX 680s.  Or for two GTX 580s, a quality-made 750W PSU would be excellent.
**SNIP**

Excellent recommendaitons by Two Cables here. Rosewill makes some really great PSU's right now and I would argue in favor of one in almost any circumstance. Their mid range-wattage PSU's (in the 500 to 800 category) are 2nd to none and extremely affordable and efficient. TC's wattage analysis was correct as well. I would run twin 580's and an i7 on a 750 watt very comfortably. If you're going 680's, Nvidia massively reduced power consumption and heat, so a 550 watt would be plenty. thumb.gif
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post #15 of 30
Thread Starter 
Wow! Thanks so much for the info, guys! I'll admit, TwoCables, I'm one of the ones that thought the efficiency rating took effect after the rated wattage of the power supply (ie a 500W 80% efficient PSU really only output 400W).

I've look at the Rosewill ones before, actually, but always thought they were too good to be true. Looks like I know what I'll be buying. Once I upgrade, I'll likely be overclocking everything, so I'll probably grab the 750. Thanks again!

Any recommendations what I should do with the Diablotek when I pull it out? Shoot it? Throw it off a cliff? Set it on fire as an offering to the PC gods, and dance on the ashes?
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post #16 of 30
Quote:
Originally Posted by DrBrogbo View Post

Any recommendations what I should do with the Diablotek when I pull it out? Shoot it? Throw it off a cliff? Set it on fire as an offering to the PC gods, and dance on the ashes?

I would just plug it in and put it in a box with no ventilation and put it under a load from something. Give it an hour or so. it'll blow itself up. tongue.gif

Or, if you don't have an extra motherboard around, grab it by the cables and smash it against the pavement.

Third option, SHOOT THE THING! biggrin.gif Preferably while plugged in for a nice spark show. (I'm kidding about leaving it plugged in while you shoot it. Could kick a breaker or something.)

Have fun with it! biggrin.gif
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post #17 of 30
Quote:
Originally Posted by DrBrogbo View Post

Wow! Thanks so much for the info, guys! I'll admit, TwoCables, I'm one of the ones that thought the efficiency rating took effect after the rated wattage of the power supply (ie a 500W 80% efficient PSU really only output 400W).
I've look at the Rosewill ones before, actually, but always thought they were too good to be true. Looks like I know what I'll be buying. Once I upgrade, I'll likely be overclocking everything, so I'll probably grab the 750. Thanks again!

 

You're welcome, but you can spend less and get the 650W version and still have plenty of room.  The 550W model might be enough after overclocking too, but I'm not 100% sure because I think I've heard that the 580 and 680 consume noticeably more power if heavily overclocked - especially the 680, if I remember correctly.

 

 

Quote:
Originally Posted by DrBrogbo View Post

Any recommendations what I should do with the Diablotek when I pull it out? Shoot it? Throw it off a cliff? Set it on fire as an offering to the PC gods, and dance on the ashes?

 

Oh, that could be fun.  lol :)

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post #18 of 30
Quote:
Originally Posted by DrBrogbo View Post

Any recommendations what I should do with the Diablotek when I pull it out? Shoot it? Throw it off a cliff? Set it on fire as an offering to the PC gods, and dance on the ashes?

I would put it back in the box and in the closet, just because it sucks doesn't mean it won't help you in a pinch if you ever need it. I have this awful little 350w PSU that I always keep because it has leads for everything (even the old Dell Aux 12v straight 6-pin) and its a useful troubleshooting tool. Or to run water pumps when bleeding a loop outside the case.
post #19 of 30
I will say this only one time.
Trust TwoCables. He is the best person here for PSU question and what a system needs to power it.
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post #20 of 30
Quote:
Originally Posted by dixson01974 View Post

I will say this only one time.
Trust TwoCables. He is the best person here for PSU question and what a system needs to power it.

Original Sin, Phaedrus, Mikeaj, Obsidian, Qwan.
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i5 6600k MSI Gaming Z170A EVGA GTX 980 Classified Crucial Ballistix Tactical (2 x 8GB) DDR4 2666 
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Samsung Pro 950 Cryorig H7 Windows 7 Ultimate x64 CrossOver 2560x1440 IPS 
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Rosewill Capstone 550-M Phanteks Enthoo Pro RAZER Abyssus Mirror Special Edition XTRAC Ripper 
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Asus Xonar Essence STX Dayton Audio B652 Lepai Tripath Class-T Hi-Fi Audio Mini Amplifier 8 Inch 60-Watt Powered Subwoofer 
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Intel q9300 Intel DP45SG MSI TFII GTX 660 Corsair Dominator 1333 
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Corsair Force 3 90gb Deepcool Gammaxx 300 Windows 7 Samsung SyncMaster 932bw 
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Dell Rosewill Lightning 800w CM Stryker Dell 
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Simplicity
(16 items)
 
#2 PC
(12 items)
 
 
CPUMotherboardGraphicsRAM
i5 6600k MSI Gaming Z170A EVGA GTX 980 Classified Crucial Ballistix Tactical (2 x 8GB) DDR4 2666 
Hard DriveCoolingOSMonitor
Samsung Pro 950 Cryorig H7 Windows 7 Ultimate x64 CrossOver 2560x1440 IPS 
PowerCaseMouseMouse Pad
Rosewill Capstone 550-M Phanteks Enthoo Pro RAZER Abyssus Mirror Special Edition XTRAC Ripper 
AudioAudioAudioAudio
Asus Xonar Essence STX Dayton Audio B652 Lepai Tripath Class-T Hi-Fi Audio Mini Amplifier 8 Inch 60-Watt Powered Subwoofer 
CPUMotherboardGraphicsRAM
Intel q9300 Intel DP45SG MSI TFII GTX 660 Corsair Dominator 1333 
Hard DriveCoolingOSMonitor
Corsair Force 3 90gb Deepcool Gammaxx 300 Windows 7 Samsung SyncMaster 932bw 
KeyboardPowerCaseMouse
Dell Rosewill Lightning 800w CM Stryker Dell 
  hide details  
Reply
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Overclock.net › Forums › Components › Power Supplies › Diablotek 775W SLI Question