Overclock.net › Forums › Graphics Cards › NVIDIA › gtx 480 sli -> Corsair HX620 PSU sufficient?
New Posts  All Forums:Forum Nav:

gtx 480 sli -> Corsair HX620 PSU sufficient?

post #1 of 10
Thread Starter 
Hi Guys. I will appreciate some help. I'm planning to sli two gtx 480. I have Corsair HX620 PSU. I've been told that as it is over 80% efficient it will produce easilly 800W. Is this true or I'm being told rubbish.
What am I risking by doing it on this PSU? Can I damage my equipment, or worst case scenario my PSU will go?

I'm completely grren in this field so any helpful comments will be great.

THX.
post #2 of 10
480s have two power connectors each, are you going to use a molex -> pciE adapter for the other card or something??
post #3 of 10
That PSU has 85% efficiency and only a 620w rating, hence the HX620. I wouldn't run SLI with only 620w since guru3d review got 702 watts consumption and you want some head room.
Sandy Thunder
(18 items)
 
QuickSilver X1
(15 items)
 
 
CPUMotherboardGraphicsRAM
i7-3930k C1 4.6GHz @1.344v Sabertooth X79 2x EVGA GTX 560 Ti SC SLI 900/2106 Dominator 1866 16GB 9-10-9-27 
Hard DriveHard DriveCoolingOS
Crucial M4 64GB 'Cuda 320GB XSPC Rasa 750 RX240 push/pull + Alphacool UT60 ... Win 7 Pro x64 
MonitorMonitorMonitorKeyboard
Asus VE198D 19" Samsung 920NW 19" Samsung 906BW 19" Logitech G510s 
PowerCaseMouseMouse Pad
Corsair HX850M Carbide 400R Cyborg M.M.O. 7 Corsair MM200 
AudioOther
Bose Music Monitor Nuforce Icon HDP 
CPUMotherboardGraphicsRAM
Phenom II x6 1090T BE Sabertooth 990FX Radeon HD 5770 1GB Corsair Veangence Blue 
Hard DriveOptical DriveCoolingOS
WD Caviar Black 1TB  Lite ON 16x DVD-R/RW ThermalRight Silver Arrow Windows 7 Professional 64 bit 
MonitorKeyboardPowerCase
Syncmaster 921BW 19" & Syncmaster 965 19" and S... Apple aluminum wired keyboard Corsair TX650 Silverstone TJ05 with window and thermal contro... 
MouseMouse PadAudio
logitech mx air None Monsoon MM-700 
  hide details  
Reply
Sandy Thunder
(18 items)
 
QuickSilver X1
(15 items)
 
 
CPUMotherboardGraphicsRAM
i7-3930k C1 4.6GHz @1.344v Sabertooth X79 2x EVGA GTX 560 Ti SC SLI 900/2106 Dominator 1866 16GB 9-10-9-27 
Hard DriveHard DriveCoolingOS
Crucial M4 64GB 'Cuda 320GB XSPC Rasa 750 RX240 push/pull + Alphacool UT60 ... Win 7 Pro x64 
MonitorMonitorMonitorKeyboard
Asus VE198D 19" Samsung 920NW 19" Samsung 906BW 19" Logitech G510s 
PowerCaseMouseMouse Pad
Corsair HX850M Carbide 400R Cyborg M.M.O. 7 Corsair MM200 
AudioOther
Bose Music Monitor Nuforce Icon HDP 
CPUMotherboardGraphicsRAM
Phenom II x6 1090T BE Sabertooth 990FX Radeon HD 5770 1GB Corsair Veangence Blue 
Hard DriveOptical DriveCoolingOS
WD Caviar Black 1TB  Lite ON 16x DVD-R/RW ThermalRight Silver Arrow Windows 7 Professional 64 bit 
MonitorKeyboardPowerCase
Syncmaster 921BW 19" & Syncmaster 965 19" and S... Apple aluminum wired keyboard Corsair TX650 Silverstone TJ05 with window and thermal contro... 
MouseMouse PadAudio
logitech mx air None Monsoon MM-700 
  hide details  
Reply
post #4 of 10
Thread Starter 
That is the plan. I have molex to pcie adptors ready.
post #5 of 10
I really wouldn't run 2x GTX480's off a 620w PSU. You'd want 750w atleast really.
Clevo P650RP6-G
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 6700HQ nVidia GTX1060 6GB Kingston HyperX Impact 2133MHZ 16GB INTEL 600p 128GB 
Hard DriveOS
Samsung 850 EVO 1TB Windows 10 Pro 64 
  hide details  
Reply
Clevo P650RP6-G
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 6700HQ nVidia GTX1060 6GB Kingston HyperX Impact 2133MHZ 16GB INTEL 600p 128GB 
Hard DriveOS
Samsung 850 EVO 1TB Windows 10 Pro 64 
  hide details  
Reply
post #6 of 10
Thread Starter 
Thank you. Could you give me a link to this review. I will splice to PSU's now as i have one spare so both of them will run at no more than 50%.
post #7 of 10
You would want to look in the PSU section for answers, namely at this program here but if you still have questions then the power supply section is the most appropriate place for them. If you do have more questions for the PSU people be sure to give them all the relevant information about your system such as CPU GPUs and anything else that draws power in your rig. You can fill out that information here to make it easier for people to help you.
Main Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 2700k ASUS P8P67 WS Revolution EVGA 980 Ti SC+ Samsung 4x4GB DDR3 1866MHz 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 Evo 1TB Samsung Spinpoint F4 2TB Samsung BD Combo Noctua NH-D14 
OSMonitorPowerCase
Windows 10 64 bit Asus PG279Q Kingwin Lazer Platinum 1000W Silverstone Raven RV03 
  hide details  
Reply
Main Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 2700k ASUS P8P67 WS Revolution EVGA 980 Ti SC+ Samsung 4x4GB DDR3 1866MHz 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 Evo 1TB Samsung Spinpoint F4 2TB Samsung BD Combo Noctua NH-D14 
OSMonitorPowerCase
Windows 10 64 bit Asus PG279Q Kingwin Lazer Platinum 1000W Silverstone Raven RV03 
  hide details  
Reply
post #8 of 10
You don't want to splice 2 PSUs together. It's asking for trouble and running multiple PSUs can cause issues as they need some sort of load on all the rails.

Seriously man, you can get a decent 750w pretty cheap. Why risk something as expensive as 2x GTX480's and the rest of your rig over the cost of a good 750w psu?
Clevo P650RP6-G
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 6700HQ nVidia GTX1060 6GB Kingston HyperX Impact 2133MHZ 16GB INTEL 600p 128GB 
Hard DriveOS
Samsung 850 EVO 1TB Windows 10 Pro 64 
  hide details  
Reply
Clevo P650RP6-G
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 6700HQ nVidia GTX1060 6GB Kingston HyperX Impact 2133MHZ 16GB INTEL 600p 128GB 
Hard DriveOS
Samsung 850 EVO 1TB Windows 10 Pro 64 
  hide details  
Reply
post #9 of 10
Thread Starter 
Quote:
Originally Posted by juano View Post

You would want to look in the PSU section for answers, namely at this program here but if you still have questions then the power supply section is the most appropriate place for them. If you do have more questions for the PSU people be sure to give them all the relevant information about your system such as CPU GPUs and anything else that draws power in your rig. You can fill out that information here to make it easier for people to help you.

Thank you
post #10 of 10
Nope, it's not enough.

Even if it is, the PSU would run always at its limit, and constantly shut down due to overload. My previous rig did the same when I SLId 8800GTs and put the Opteron 1214 at 3GHz on my LC Power 550W... The chip was the 103W version, at 3GHz with 1.55V it ate power to light a monastery, and the 8800GTs... We all know what they are tongue.gif


Trust me, you don't want to run on the limits. Sometimes you'll be lucky and it will just shut down, but sometimes you won't and the CPU will simply blow up.
   
AGP bencher
(14 items)
 
CPUMotherboardGraphicsRAM
Ryzen R7 1700 Gigabyte GA-AX370-Gaming 5 Sapphire HD 6950 2GiB 2x8GB KFA2 HOF DDR4-3600 
Hard DriveHard DriveHard DriveHard Drive
Crucial MX100 256GB Seagate 600 Series 240GB Seagate 7200.14 2TB Samsung F3 1TB 
CoolingCoolingCoolingCooling
EKWB Supreme HF XSPC Rasa GPU EK XT360 EK 4.0 
OSMonitorMonitorKeyboard
W10 Pro LG IPS235 LG E2250V KUL ES-87 
PowerCaseMouseAudio
SF Leadex II 650W Lian Li PC-A05NB Logitech G9 Xonar DX 
AudioAudio
SMSL SA-S3+Technics CB-250 Sennheiser HD555 
CPUMotherboardRAMHard Drive
AMD A10-5700 Gigabyte F2A75M-HD2 G.SKILL Ares 2133 CL9 Hitachi 5K750 
Hard DriveCoolingOSMonitor
Momentus .7 200GB Noctua NH-L9a Server 2012 R2 Standard AUO B156HW01 
PowerCaseOther
PicoPSU-80-WI-25V AIO Aluminium Handmade TP-Link Archer Something Something Wi-Fi AC 
CPUCPUCPUMotherboard
Core2Duo E6400 Core2Quad Q6600 Pentium Dual Core E5200 AsRock 4COREDUAL-SATA2 R2.0 
GraphicsRAMHard DriveOptical Drive
A dumpload of ancient AGP cards Kingston Value DDR2-667 CL4 2T @CL3 1T Seagate 160GB 7200.10 LG IDE DVD-ROM 
CoolingCoolingOSMonitor
Ghettomade CPU waterblock 49cc 2stroke engine copper radiator WinXP SP2 32bit ProView 17" 
PowerCase
Tacens Radix V 550W Ghetto aluminium bench 
  hide details  
Reply
   
AGP bencher
(14 items)
 
CPUMotherboardGraphicsRAM
Ryzen R7 1700 Gigabyte GA-AX370-Gaming 5 Sapphire HD 6950 2GiB 2x8GB KFA2 HOF DDR4-3600 
Hard DriveHard DriveHard DriveHard Drive
Crucial MX100 256GB Seagate 600 Series 240GB Seagate 7200.14 2TB Samsung F3 1TB 
CoolingCoolingCoolingCooling
EKWB Supreme HF XSPC Rasa GPU EK XT360 EK 4.0 
OSMonitorMonitorKeyboard
W10 Pro LG IPS235 LG E2250V KUL ES-87 
PowerCaseMouseAudio
SF Leadex II 650W Lian Li PC-A05NB Logitech G9 Xonar DX 
AudioAudio
SMSL SA-S3+Technics CB-250 Sennheiser HD555 
CPUMotherboardRAMHard Drive
AMD A10-5700 Gigabyte F2A75M-HD2 G.SKILL Ares 2133 CL9 Hitachi 5K750 
Hard DriveCoolingOSMonitor
Momentus .7 200GB Noctua NH-L9a Server 2012 R2 Standard AUO B156HW01 
PowerCaseOther
PicoPSU-80-WI-25V AIO Aluminium Handmade TP-Link Archer Something Something Wi-Fi AC 
CPUCPUCPUMotherboard
Core2Duo E6400 Core2Quad Q6600 Pentium Dual Core E5200 AsRock 4COREDUAL-SATA2 R2.0 
GraphicsRAMHard DriveOptical Drive
A dumpload of ancient AGP cards Kingston Value DDR2-667 CL4 2T @CL3 1T Seagate 160GB 7200.10 LG IDE DVD-ROM 
CoolingCoolingOSMonitor
Ghettomade CPU waterblock 49cc 2stroke engine copper radiator WinXP SP2 32bit ProView 17" 
PowerCase
Tacens Radix V 550W Ghetto aluminium bench 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: NVIDIA
Overclock.net › Forums › Graphics Cards › NVIDIA › gtx 480 sli -> Corsair HX620 PSU sufficient?