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1500 enough?

post #1 of 13
Thread Starter 
Hi there, i have a 1500 watt siverstone strider power supply and also have 4x gtx 480s.When i overclock my gpus 1 at a time they do 870 -900 each.Now when i overclock them all at the same time to 850 core the pc restarts,the cpu is at 4.5 ghz.I have lots of fans ,and 2 rads ,so is my power supply struggling,and should i run 2 power supplys.I also ran 2 gpus at 900 core and 2 gpus at stock core and it ran fine
post #2 of 13
Sweet mother of GPU! Get some supplemental power! A GTX 480 at STOCK eats about 300w!
 
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post #3 of 13
Should be enough.
post #4 of 13
I think you need another PSU for 4 480s. One for the GPUs, one for the rest.
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post #5 of 13
It's enough. Four 480s and dual Nehalems pulls only 1400W.
post #6 of 13
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
It's enough. Four 480s and dual Nehalems pulls only 1400W.
Overclocked 480s?
post #7 of 13
Are you going to be folding, gaming, or benching?
post #8 of 13
Quote:
Originally Posted by Bullant View Post
Overclocked 480s?
Exactly. I would add more power. Just because "it should be enough" doesn't mean it is. Pull a 480 out and see if the system clicks off like it is.
 
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KeyboardPowerCase
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15K HP Ultra320 SCSI DVD Burner Bare Heatsinks + Chassis Airflow The Ever-Changing Distro... 
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Only For Diagnostics.. 2x1300w (Redundant, Delta OEM) HP 4U Rackmount 
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ThinkPad W510
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The Arkbird
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CPUGraphicsRAMHard Drive
i7 3840QM Quadro K2000M 4x8gb Intel 525 Series 240gb mSATA 
Optical DriveCoolingOSMonitor
Tray-load DVD Factory Windows 7 Pro 1080P "Ultrasharp" panel 
KeyboardPowerCase
Integrated Big 'ol brick M4700 chassis 
CPUMotherboardGraphicsRAM
i7 820QM 4318-CTO Quadro FX 880M 4x4gb 
Hard DriveOptical DriveCoolingOS
X-25M G2 DVD Stock Arch x64 
MonitorKeyboardPowerMouse
1080P touch screen IPS Clicky Brick Adapter UltraNav 
CPUMotherboardGraphicsRAM
4x Xeon E7440s HP DL580 G3 Motherboard Rev. 1.1 ATi Rage XL Samsung ECC DDR2 
Hard DriveOptical DriveCoolingOS
15K HP Ultra320 SCSI DVD Burner Bare Heatsinks + Chassis Airflow The Ever-Changing Distro... 
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Only For Diagnostics.. 2x1300w (Redundant, Delta OEM) HP 4U Rackmount 
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post #9 of 13
It should be enough, if you want to do heavy overclocking then go for a dedicated psu.

Can we get a picture of the SLi setup? ;o
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post #10 of 13
True, one GTX480 OC can draw 280w, with sli scale, 4x max is around 970w. i7 920 OC can take another 200w, WC and others, we are looking at 1350w. On other hand, in general, folding draws less power than gaming. Silverstone psu usually can do more than its spec so it should be fine in this case. However, don't get me wrong, it will be on edge if keep on adding stuff.
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