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Another PSU question.

post #1 of 6
Thread Starter 
Number 1 my system.
1 2500k
2. Gigabyte Z68 midrange mobo
3. 2X4GB Corsair Vengence
4. M4 64GB SSD
5. 2TB Data drive
6. 3X120mm fan 1 200MM fan and 1 140mm fan
7. keyboard/mouse
8 External DVD drive

My powersupply is a Seasonic X750 gold series.

My question is if this PSU will support two 480GTX in SLI. If not what would the max I could SLI be? A set of 580's or maybe 570s? Looking to upgrade to an Nvidia or perhaps AMD even (I think I'd be fine Crossfiring any ATI card though) setup.

My main question though is if it iwll handle the 480s. I know the X750 is maybe the best PSU in it's class but these cards suck a lot of juice. I've read that with one your system draw will be 421 and I'm not sure if that leaves headroom for a second. Thanks in advance.
    
CPUMotherboardGraphicsRAM
6700k (EK Supremacy Evo) *4.7 @ 1.312 Asus Maximus VIII gene GTX 1080 FE (EK nickel/plexi)* 2075/5401 16gb Corsair 3200  
Hard DriveHard DriveHard DriveCooling
Samsung 950pro M.2 256gb Samsung 850 Evo - 512 - Steam Samsung 850 Evo - 512 - Other Apps EK Res 
CoolingCoolingCoolingOS
EK pump top XSPC EX 360 XSPC EX 240 10 
KeyboardPowerCaseMouse
Ducky Shine 3 TKL  EVGA 650 Fractal Arc Mini 2 G303 
  hide details  
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CPUMotherboardGraphicsRAM
6700k (EK Supremacy Evo) *4.7 @ 1.312 Asus Maximus VIII gene GTX 1080 FE (EK nickel/plexi)* 2075/5401 16gb Corsair 3200  
Hard DriveHard DriveHard DriveCooling
Samsung 950pro M.2 256gb Samsung 850 Evo - 512 - Steam Samsung 850 Evo - 512 - Other Apps EK Res 
CoolingCoolingCoolingOS
EK pump top XSPC EX 360 XSPC EX 240 10 
KeyboardPowerCaseMouse
Ducky Shine 3 TKL  EVGA 650 Fractal Arc Mini 2 G303 
  hide details  
Reply
post #2 of 6
Thats a high quality power supply. It should have no problems powering gtx 480 sli at stock. Now if you are overclocking the 480s, then it may be iffy :/. Wait for the AMD 7 series to come out and you should start seeing prices dropping. I would recommend 6970cf or gtx 570 sli over the gtx 480 sli.


http://www.geeks3d.com/20100414/power-consumption-of-two-gtx-480-in-sli-with-furmark-and-3dmark03/

http://www.anandtech.com/show/2977/nvidia-s-geforce-gtx-480-and-gtx-470-6-months-late-was-it-worth-the-wait-/19
Edited by Quesoblanco - 1/3/12 at 7:30pm
Queso Fresco
(15 items)
 
  
CPUMotherboardGraphicsRAM
Ryzen 5 1600 MSI B350 Bazooka ASUS Turbo GTX 1060  T-Force DDR4 3000 16gb 
Hard DriveHard DriveCoolingOS
Samsung 840 250gb Intel 320 160gb SilverStone Heligon HE01 Windows 10 
MonitorKeyboardPowerCase
Achieva Shimian  Monoprice MX Black SeaSonic X-750 Corsair 350D 
Mouse
Logitech G403 
  hide details  
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Queso Fresco
(15 items)
 
  
CPUMotherboardGraphicsRAM
Ryzen 5 1600 MSI B350 Bazooka ASUS Turbo GTX 1060  T-Force DDR4 3000 16gb 
Hard DriveHard DriveCoolingOS
Samsung 840 250gb Intel 320 160gb SilverStone Heligon HE01 Windows 10 
MonitorKeyboardPowerCase
Achieva Shimian  Monoprice MX Black SeaSonic X-750 Corsair 350D 
Mouse
Logitech G403 
  hide details  
Reply
post #3 of 6
Thread Starter 
I agree with you on your reccomendations but I could get a decent deal on these and they are still beasts. My CPU is OC'd to 4.2 ghz daily and I would like to OC the 480's so your thinking that's probabally a no no?
    
CPUMotherboardGraphicsRAM
6700k (EK Supremacy Evo) *4.7 @ 1.312 Asus Maximus VIII gene GTX 1080 FE (EK nickel/plexi)* 2075/5401 16gb Corsair 3200  
Hard DriveHard DriveHard DriveCooling
Samsung 950pro M.2 256gb Samsung 850 Evo - 512 - Steam Samsung 850 Evo - 512 - Other Apps EK Res 
CoolingCoolingCoolingOS
EK pump top XSPC EX 360 XSPC EX 240 10 
KeyboardPowerCaseMouse
Ducky Shine 3 TKL  EVGA 650 Fractal Arc Mini 2 G303 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
6700k (EK Supremacy Evo) *4.7 @ 1.312 Asus Maximus VIII gene GTX 1080 FE (EK nickel/plexi)* 2075/5401 16gb Corsair 3200  
Hard DriveHard DriveHard DriveCooling
Samsung 950pro M.2 256gb Samsung 850 Evo - 512 - Steam Samsung 850 Evo - 512 - Other Apps EK Res 
CoolingCoolingCoolingOS
EK pump top XSPC EX 360 XSPC EX 240 10 
KeyboardPowerCaseMouse
Ducky Shine 3 TKL  EVGA 650 Fractal Arc Mini 2 G303 
  hide details  
Reply
post #4 of 6
Overclocking 480s isn't worth it, when you look at the heat and power consumption increase. Unless you put them under water I don't think you can get them high enough to be worth it. It's like overclocking a Pentium D or a 2900XT or a Bulldozer FX8100. You can, but on air why bother?
post #5 of 6
if you get that great of a deal then go for it.... but expect lots of heat... are they reference coolers? or msi twin frozr?
Queso Fresco
(15 items)
 
  
CPUMotherboardGraphicsRAM
Ryzen 5 1600 MSI B350 Bazooka ASUS Turbo GTX 1060  T-Force DDR4 3000 16gb 
Hard DriveHard DriveCoolingOS
Samsung 840 250gb Intel 320 160gb SilverStone Heligon HE01 Windows 10 
MonitorKeyboardPowerCase
Achieva Shimian  Monoprice MX Black SeaSonic X-750 Corsair 350D 
Mouse
Logitech G403 
  hide details  
Reply
Queso Fresco
(15 items)
 
  
CPUMotherboardGraphicsRAM
Ryzen 5 1600 MSI B350 Bazooka ASUS Turbo GTX 1060  T-Force DDR4 3000 16gb 
Hard DriveHard DriveCoolingOS
Samsung 840 250gb Intel 320 160gb SilverStone Heligon HE01 Windows 10 
MonitorKeyboardPowerCase
Achieva Shimian  Monoprice MX Black SeaSonic X-750 Corsair 350D 
Mouse
Logitech G403 
  hide details  
Reply
post #6 of 6
Thread Starter 
I believe they are reference. I have a HAF 912 with a ton of fans but I do expect them to heat up a bit.

Phadreus my question to you though is if this PSU will run them with let's say a 50mhz overclock on the core and my modest CPU OC? I'm not against running them at stock I'm sure at 1080p they'd be good enough I'm just asking because of headroom reasons.

Edit: Pha your PSU calc reccomended 800w for my system but then my PSU was under the reccomendations. I'm just worried that I may be cutting it way too close if you have some insight on that it'd be much appreciated.
Edited by jtom320 - 1/3/12 at 10:15pm
    
CPUMotherboardGraphicsRAM
6700k (EK Supremacy Evo) *4.7 @ 1.312 Asus Maximus VIII gene GTX 1080 FE (EK nickel/plexi)* 2075/5401 16gb Corsair 3200  
Hard DriveHard DriveHard DriveCooling
Samsung 950pro M.2 256gb Samsung 850 Evo - 512 - Steam Samsung 850 Evo - 512 - Other Apps EK Res 
CoolingCoolingCoolingOS
EK pump top XSPC EX 360 XSPC EX 240 10 
KeyboardPowerCaseMouse
Ducky Shine 3 TKL  EVGA 650 Fractal Arc Mini 2 G303 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
6700k (EK Supremacy Evo) *4.7 @ 1.312 Asus Maximus VIII gene GTX 1080 FE (EK nickel/plexi)* 2075/5401 16gb Corsair 3200  
Hard DriveHard DriveHard DriveCooling
Samsung 950pro M.2 256gb Samsung 850 Evo - 512 - Steam Samsung 850 Evo - 512 - Other Apps EK Res 
CoolingCoolingCoolingOS
EK pump top XSPC EX 360 XSPC EX 240 10 
KeyboardPowerCaseMouse
Ducky Shine 3 TKL  EVGA 650 Fractal Arc Mini 2 G303 
  hide details  
Reply
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