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PSU for Dual 4870x2

post #1 of 109
Thread Starter 
I'm sure my corsair tx750w will not be enough to power two 4870x2's.
What do you guys think? See sig rig
Mixed answers on Google, some yes some no.

What PSU do you all recommend?
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2x VelociRaptors 150gb (Raid 0) Caviar 1TB (Data) 2xPioneer DVD-RW Win 7 Ultimate 64-bit Asus PA248Q 
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Corsair TX750w SilverStone FT01-BW Razer Lachesis Razer eXact Mat 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 Asus P6T Deluxe Crossfire Asus 7870 Corsair DDR3 (3x1GB) 1600 
Hard DriveOptical DriveOSMonitor
2x VelociRaptors 150gb (Raid 0) Caviar 1TB (Data) 2xPioneer DVD-RW Win 7 Ultimate 64-bit Asus PA248Q 
PowerCaseMouseMouse Pad
Corsair TX750w SilverStone FT01-BW Razer Lachesis Razer eXact Mat 
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post #2 of 109
Antec Earthwatts 750w. Should be cheaper and more efficient as well as running cooler and more quite plus it's semi modular and cheaper in price.

Even a Corsair 650 would be fine. Your rig will only pull 400w in games at the very most.
X79-GCN
(22 items)
 
  
CPUMotherboardGraphicsRAM
Intel 3930K 4.5GHz HT GIGABYTE GA-X79-UP4 AMD R9-290X GEil Evo Potenza DDR3 2400MHz CL10 (4x4GB) 
Hard DriveCoolingCoolingCooling
Samsung 840 Pro 120GB EK Supremacy (CPU) NF F12's P/P (360 Rad)  NF A14's (420 Rad)  
CoolingCoolingCoolingCooling
XSPC Chrome Compression Fittings EK RES X3 150 Primochill PremoFlex Advanced LRT Clear 1/2 ID EK-FC (R9 290X) 
CoolingCoolingCoolingOS
EK D5 Vario Top-X  Phobya G-Changer V2 360mm Phobya G-Changer V2 420mm Win 10 x64 Pro 
MonitorKeyboardPowerCase
BenQ XR3501 35" Curved Corsair Vengeance K90 Seasonic X-1250 Gold (v2) Corsair 900D 
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Logitech G400s Senn HD 598 
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X79-GCN
(22 items)
 
  
CPUMotherboardGraphicsRAM
Intel 3930K 4.5GHz HT GIGABYTE GA-X79-UP4 AMD R9-290X GEil Evo Potenza DDR3 2400MHz CL10 (4x4GB) 
Hard DriveCoolingCoolingCooling
Samsung 840 Pro 120GB EK Supremacy (CPU) NF F12's P/P (360 Rad)  NF A14's (420 Rad)  
CoolingCoolingCoolingCooling
XSPC Chrome Compression Fittings EK RES X3 150 Primochill PremoFlex Advanced LRT Clear 1/2 ID EK-FC (R9 290X) 
CoolingCoolingCoolingOS
EK D5 Vario Top-X  Phobya G-Changer V2 360mm Phobya G-Changer V2 420mm Win 10 x64 Pro 
MonitorKeyboardPowerCase
BenQ XR3501 35" Curved Corsair Vengeance K90 Seasonic X-1250 Gold (v2) Corsair 900D 
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post #3 of 109
Your TX750 will power two 4870X2's fine.
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5820k ga-x99-sli gigabyte 7970 wf 16gb 4x4 lpx 
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samsung 830 128gb ven x/gt ap-15 evga g2 650w corsair 450d 
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jbl lsr305 
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CPUMotherboardGraphicsRAM
5820k ga-x99-sli gigabyte 7970 wf 16gb 4x4 lpx 
Hard DriveCoolingPowerCase
samsung 830 128gb ven x/gt ap-15 evga g2 650w corsair 450d 
Audio
jbl lsr305 
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post #4 of 109
Since you already have the TX750 there's no need to replace it.
post #5 of 109
Lmao at people saying 750w Will be fine

Take it from me, 850w MINIMUM.... Reviews show that Quad-Fire pulls just under 800w under full load on a system with an overclocked Core 2 Quad at 3.5Ghz. Core i7's use more power when overclocked so you'll looking at at over 800w total system power consumption.

Throw in some GPU overclocking at you're looking at even more.

If you can afford a 1Kw PSU then I would not considering anything less unless you have to.
Edited by scatteh316 - 4/18/11 at 9:26am
post #6 of 109
oh sorry OP i thought you were looking into buying a 750 lol. Yes your current 750 is way more than enought
X79-GCN
(22 items)
 
  
CPUMotherboardGraphicsRAM
Intel 3930K 4.5GHz HT GIGABYTE GA-X79-UP4 AMD R9-290X GEil Evo Potenza DDR3 2400MHz CL10 (4x4GB) 
Hard DriveCoolingCoolingCooling
Samsung 840 Pro 120GB EK Supremacy (CPU) NF F12's P/P (360 Rad)  NF A14's (420 Rad)  
CoolingCoolingCoolingCooling
XSPC Chrome Compression Fittings EK RES X3 150 Primochill PremoFlex Advanced LRT Clear 1/2 ID EK-FC (R9 290X) 
CoolingCoolingCoolingOS
EK D5 Vario Top-X  Phobya G-Changer V2 360mm Phobya G-Changer V2 420mm Win 10 x64 Pro 
MonitorKeyboardPowerCase
BenQ XR3501 35" Curved Corsair Vengeance K90 Seasonic X-1250 Gold (v2) Corsair 900D 
MouseAudio
Logitech G400s Senn HD 598 
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X79-GCN
(22 items)
 
  
CPUMotherboardGraphicsRAM
Intel 3930K 4.5GHz HT GIGABYTE GA-X79-UP4 AMD R9-290X GEil Evo Potenza DDR3 2400MHz CL10 (4x4GB) 
Hard DriveCoolingCoolingCooling
Samsung 840 Pro 120GB EK Supremacy (CPU) NF F12's P/P (360 Rad)  NF A14's (420 Rad)  
CoolingCoolingCoolingCooling
XSPC Chrome Compression Fittings EK RES X3 150 Primochill PremoFlex Advanced LRT Clear 1/2 ID EK-FC (R9 290X) 
CoolingCoolingCoolingOS
EK D5 Vario Top-X  Phobya G-Changer V2 360mm Phobya G-Changer V2 420mm Win 10 x64 Pro 
MonitorKeyboardPowerCase
BenQ XR3501 35" Curved Corsair Vengeance K90 Seasonic X-1250 Gold (v2) Corsair 900D 
MouseAudio
Logitech G400s Senn HD 598 
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post #7 of 109
Quote:
Originally Posted by scatteh316 View Post
Lmao at people saying 750w Will be fine

Take it from me, 850w MINIMUM.... Reviews show that Quad-Fire pulls just under 800w under full load.

Throw in some GPU overclocking at you're looking at even more.

If you can afford a 1Kw PSU then I would not considering anything less unless you have to.
Please don't spread misinformation and ignorance. Point us to a legit review that says two 4870x2 need 850W. OP, don't worry 750W will be more than fine. Best of luck.
     
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e8500 E0 @ 4.37GHz 1.328V Gigabyte EP45-UD3P SAPPHIRE Radeon HD4850 702-1160 G Skill PI 2x2GB/2x1GB 
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CPUMotherboardGraphicsRAM
e8500 E0 @ 4.37GHz 1.328V Gigabyte EP45-UD3P SAPPHIRE Radeon HD4850 702-1160 G Skill PI 2x2GB/2x1GB 
Hard DriveOptical DriveOSMonitor
Seagate 500GB/WD 640GB Black/WD 160GB Blue 2x LG Lightscribe 22x DVD Combos W7 Professional 64bit/Ubuntu Studio 10.04 64bit Asus PW201 20" VA-Type 
KeyboardPowerCaseMouse
Saitek Eclipse II Kingwin Mach 1 800W "Afterburner Midnight" CM Centurion 590 Mod Razer Death Adder LH 
Mouse Pad
Steel Series NP+ 
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post #8 of 109
Thread Starter 
thanks fellas. Didn't think my PSU would be able to handle it.

I guess when my 2nd 4870x2 arrives I'll know for sure.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 Asus P6T Deluxe Crossfire Asus 7870 Corsair DDR3 (3x1GB) 1600 
Hard DriveOptical DriveOSMonitor
2x VelociRaptors 150gb (Raid 0) Caviar 1TB (Data) 2xPioneer DVD-RW Win 7 Ultimate 64-bit Asus PA248Q 
PowerCaseMouseMouse Pad
Corsair TX750w SilverStone FT01-BW Razer Lachesis Razer eXact Mat 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 920 Asus P6T Deluxe Crossfire Asus 7870 Corsair DDR3 (3x1GB) 1600 
Hard DriveOptical DriveOSMonitor
2x VelociRaptors 150gb (Raid 0) Caviar 1TB (Data) 2xPioneer DVD-RW Win 7 Ultimate 64-bit Asus PA248Q 
PowerCaseMouseMouse Pad
Corsair TX750w SilverStone FT01-BW Razer Lachesis Razer eXact Mat 
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Reply
post #9 of 109
waits for phedaures...
    
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i5 2500k ASUS P8Z68-V LX Intel 3000 G-Skill Sniper 
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Intel 320 Series SSD Stock Intel HSF , 2 Antec 100 stock fans, 2 ult... Windows 7 64 Bit Professional Samsung Syncmaster B2430 
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CPUMotherboardGraphicsRAM
i5 2500k ASUS P8Z68-V LX Intel 3000 G-Skill Sniper 
Hard DriveCoolingOSMonitor
Intel 320 Series SSD Stock Intel HSF , 2 Antec 100 stock fans, 2 ult... Windows 7 64 Bit Professional Samsung Syncmaster B2430 
KeyboardPowerCaseMouse
Logitech Illuminated Corsair CX430 V2 Antec 100 Logitech Dinovo 
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post #10 of 109
Quote:
Originally Posted by scatteh316 View Post
Lmao at people saying 750w Will be fine

Take it from me, 850w MINIMUM.... Reviews show that Quad-Fire pulls just under 800w under full load on a system with an overclocked Core 2 Quad at 3.5Ghz. Core i7's use more power when overclocked so you'll looking at at over 800w total system power consumption.

Throw in some GPU overclocking at you're looking at even more.

If you can afford a 1Kw PSU then I would not considering anything less unless you have to.
Link doesn't work.... and that review is most likely not factoring in efficiency.
Rig
(9 items)
 
  
CPUMotherboardGraphicsRAM
5820k ga-x99-sli gigabyte 7970 wf 16gb 4x4 lpx 
Hard DriveCoolingPowerCase
samsung 830 128gb ven x/gt ap-15 evga g2 650w corsair 450d 
Audio
jbl lsr305 
  hide details  
Reply
Rig
(9 items)
 
  
CPUMotherboardGraphicsRAM
5820k ga-x99-sli gigabyte 7970 wf 16gb 4x4 lpx 
Hard DriveCoolingPowerCase
samsung 830 128gb ven x/gt ap-15 evga g2 650w corsair 450d 
Audio
jbl lsr305 
  hide details  
Reply
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