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Minimum required wattage with this CPU and GPU's

post #1 of 10
Thread Starter 
As title says, for i5-2500k @ 1.39v, and only two 670 FTW both at 1.21v considering im doing a 24/7 OC at max at whatever both the cards/cpu can put out on water cooling (going custom loop as well as part of my upgrade).

I dont want to gimp myself out, but i dont want to get an 850w PSU and only need like 600 of it? Is a 650 okay? 700? I just want ENOUGH, if i want to go 3 way sli i should already have enough money to upgrade PSU's.

If you can back up your answer with math and measured values; ill give you rep for that extra effort so i can believe you. Okay thanks! thumb.gif
post #2 of 10
650w is perfect.

Could get away with 550w if you already had it, but go 650w.
    
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post #3 of 10
You could take a look at the Newton R3 600 watts only problem is the price at 150$ the price is a bit of a ripoff

http://www.newegg.com/Product/Product.aspx?Item=N82E16817580004&Tpk=newton%20r3&IsVirtualParent=1

If you dont mind non modular there is the little brother the Tesla R2

http://www.newegg.com/Product/Product.aspx?Item=N82E16817580009

Or any other from the list

http://www.overclock.net/t/183810/faq-recommended-power-supplies
Edited by shilka - 5/17/13 at 5:06pm
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Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
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LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
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Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
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Onkyo TX NR646  Harman Kardon HKTS 60 Dali Opticon Vokal x2 Dali Opticon 2 
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post #4 of 10
With my 2500k @1.37v and two 660ti @ 1.175 (modded Wattage by +15W on each card
, pump, 12 fans @700rpm 2 hdd´s, one SSD, fan controller and two neonlamps the highest
wattage i have measured was around 520-540W max..(in 3dmark and valley) but most of
the time under 500 real watt

so if you get an 80+ PSU this would make 675W for the PSU with some small headroom.
( i calculated the worst case and took 540W as 80% .. many PSU´s do around 85% )

so i´d take a good 700W PSU at least because you do not want it to use the full juice
what may be better for the PSU´s life.. to be really safe id say 700-750W..

This wont let the PSU bleed that much.. me for my part got this silverstone 1000W for
around 180$...

i´m no PSU guru.. but like i said, since there are "just small" price differences i´d go
for something around 750W, especially if you want to modify also the wattage
of your gpu´s thru the kepler bios tool and the power level with msi afterburner / precision x...
Edited by smex - 5/17/13 at 5:18pm
post #5 of 10
Thread Starter 
Quote:
Originally Posted by shilka View Post

You could take a look at the Newton R3 600 watts only problem is the price at 150$ the price is a bit of a ripoff

http://www.newegg.com/Product/Product.aspx?Item=N82E16817580004&Tpk=newton%20r3&IsVirtualParent=1

If you dont mind non modular there is the little brother the Tesla R2

http://www.newegg.com/Product/Product.aspx?Item=N82E16817580009

Or any other from the list

http://www.overclock.net/t/183810/faq-recommended-power-supplies

I plan on getting a Corsair because it is cheapest in my location/sale. I have a choice between the TX650M, TX750m, and TX850m. I have found the 750m to be the cheapest at only 105 (in a local store that i can easily return if i have a problem). i think i can get the 650m price matched and also get it for less than 105.... so is it worth just staying with the 650m considering i wont be using the extra 100watts? or just get the 750m for 105?
Quote:
Originally Posted by smex View Post

With my 2500k @1.37v and two 660ti @ 1.175, pump, 12 fans @700rpm 2 hdd´s
one SSD, fan controller and two neonlamps the highest wattage i have measured
was around 520-540W max..(in 3dmark and valley) but most of the time under 500 real watt

so if you get an 80+ PSU this would make 675W for the PSU with some small headroom.
( i calculated the worst case and took 540W as 80% .. many PSU´s do around 85% )

so i´d take a good 700W PSU at least because you do not want it to use the full juice
what may be better for the PSU´s life.. to be really safe id say 700-750W..

This wont let the PSU bleed that much.. me for my part got this silverstone 1000W for
around 180$...

i´m no PSU guru.. but like i said, since there are "just small" price differences i´d go
for something around 750W, especially if you want to modify also the wattage
of your gpu´s thru the kepler bios tool and the power level with msi afterburner / precision x...

This is really helpful! thumb.gif Thank you so much Smex.
post #6 of 10
Quote:
Originally Posted by Aesthethc View Post

I plan on getting a Corsair because it is cheapest in my location/sale. I have a choice between the TX650M, TX750m, and TX850m. I have found the 750m to be the cheapest at only 105 (in a local store that i can easily return if i have a problem). i think i can get the 650m price matched and also get it for less than 105.... so is it worth just staying with the 650m considering i wont be using the extra 100watts? or just get the 750m for 105?

No Rosewill Capstone?
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Seravee
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Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD60EZRX  WD Red WD80EFZX 8TB  Seagate Ironwolf Pro 10 TB 
Optical DriveCoolingCoolingOS
LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorMonitorKeyboardPower
Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
AudioAudioAudioAudio
Onkyo TX NR646  Harman Kardon HKTS 60 Dali Opticon Vokal x2 Dali Opticon 2 
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x2 Dali Opticon 1 CableMod E series PSU cable set CableMod LED Strips 
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post #7 of 10
Thread Starter 
Quote:
Originally Posted by shilka View Post

No Rosewill Capstone?

Im not familiar with Rosewill's customer service, do they have advanced RMA service like Corsair does if i have a problem later in the future? I have had good and fast Corsair RMA service because i live right next to Corsair warehouse apparently.... Also is the Rosewill Capstone much quieter than the Corsair TX series?
post #8 of 10
You´re welcome..
i´m curious what the other dudes say to my argumentation.

maybe this helps also
http://www.overclock.net/t/1140534/psu-calc-final-release
http://www.overclock.net/t/183810/faq-recommended-power-supplies
post #9 of 10
A stock GTX 670 uses 170w max, so I'd assume 200w max with the modded bios and overclock.

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-670/specifications

There are no 2500k power consumption threads around, only system load. But It's safe to say an overclocked 2500k will use 100-125w max.

The rest of the system will yield about 50w total. So that's about 550 -575w max. A 650w power supply will easily cover this. I believe a good 550w will do aswell.

Here is a screenshot of my GTX690 and 3970x pushing near 1.7v using my trusty old AX650 that I still use:



Never had any shut downs using this psu.

Also remember a 3970x will use a lot more power than a 2500K, definitely more than double.
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
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BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
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Reply
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
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post #10 of 10
Thread Starter 
Thank you all for your help. thumb.gif

Since no one else can say anything about Rosewill's RMA compared to Corsair's ready availability.... i will be buying a Corsair TX750M at my local store, a 650M if they have that available too. If not, the 750M will do.
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