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I have a ' MSI GTX 780 Geforce gaming' GPU but i have a question about my psu! please help! first pc build.

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Last response: in Components
April 25, 2014 12:37:24 PM

Hi!

Dear community,
As you can see in the title: I have a question about the PSU..
When I got my GPU i found out that it needed 600 WATT and my PSU only gives me 550 ( i have the Cooler master vs v550s).

I thought that it at least would turn on my pc..but theres only the led light from the power button thats on. It doesnt make a sound, no boot up what so ever..

is this due to my psu? if yes, which do you recommend for my gpu.
if no: what could it be :( (!

first pc build..i really want this one to work..please help me..

gr

Nam

More about : msi gtx 780 geforce gaming gpu question psu build

a b 4 Gaming
a b ) Power supply
a b V Motherboard
a b U Graphics card
April 25, 2014 12:50:30 PM

your system should still turn on... just idling in windows your CPU/GPU use very little power.

it'd be under full load where you'd see the PSU struggling.

if you want to attempt to use it, make sure your GPU and CPU are at stock speeds. any overlcocking draws more power
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April 25, 2014 1:02:34 PM

lowriderflow said:
your system should still turn on... just idling in windows your CPU/GPU use very little power.

it'd be under full load where you'd see the PSU struggling.

if you want to attempt to use it, make sure your GPU and CPU are at stock speeds. any overlcocking draws more power


Hey! thanks for your answer, but Its freshly build, theres no OS on it yet..and I can't seem to install it..it won't boot:( ! i searched the web and tried different solutions..no clue..im a noob..the power led is on..but it wont do anything..any suggestions?
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Related resources
a b 4 Gaming
a c 1660 ) Power supply
a c 338 V Motherboard
a c 822 U Graphics card
April 25, 2014 1:04:24 PM

For a system using a single GeForce GTX 780 graphics card NVIDIA specifies a minimum of a 600 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 42 Amps or greater and that has at least one 6-pin and one 8-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

Cooler Master V550S
• OEM: Enhance Electronics
• maximum combined +12 Volt continuous current rating of 45 Amps <===== Sufficient
• two (6+2)-pin PCI Express supplementary power connectors
• Semi-Modular Output Cables: Yes
• Official Intel Haswell Compliance: Yes
• 80 PLUS GOLD Efficiency Certification
• 5 Year Limited Warranty

Did you connect the (4+4)-pin CPU power connector from the PSU to the motherboard?

Which LED light on which power button?

What's the brand and model of the motherboard?
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April 25, 2014 1:44:09 PM

ko888 said:
For a system using a single GeForce GTX 780 graphics card NVIDIA specifies a minimum of a 600 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 42 Amps or greater and that has at least one 6-pin and one 8-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

Cooler Master V550S
• OEM: Enhance Electronics
• maximum combined +12 Volt continuous current rating of 45 Amps <===== Sufficient
• two (6+2)-pin PCI Express supplementary power connectors
• Semi-Modular Output Cables: Yes
• Official Intel Haswell Compliance: Yes
• 80 PLUS GOLD Efficiency Certification
• 5 Year Limited Warranty

Did you connect the (4+4)-pin CPU power connector from the PSU to the motherboard?

Which LED light on which power button?

What's the brand and model of the motherboard?


Hey thanks for your reaction: My ledlight (power button) from the case, 'coolermaster cm90 III closed' so there is power somewhere.. And for your question, ill check when I'm back home and I'll let you know.

My motherboard Gigabyte ga z87 HD3..

I was checking for alternative psu's and i found the same version but then 650 watt..or the Cooler master gm G7580M, any good?
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April 25, 2014 3:40:40 PM

Im back again, and it is connected right:) ! do you have any more ideas about it? im kinda desperate:( !
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a b 4 Gaming
a c 1660 ) Power supply
a c 338 V Motherboard
a c 822 U Graphics card
April 25, 2014 10:21:17 PM

Does the PSU's and CPU cooler's fans spin up when the power button is pressed?

Does your motherboard have any indicator LEDs? Any decent motherboard will have an LED, right on the motherboard itself, that indicates that it is receiving +5Vsb (i.e. +5 Volt Standby power). If the motherboard isn't receiving any +5Vsb power then the motherboard will never be able to turn on.

Did you plug in a motherboard POST (i.e. Power On Self Test) beep speaker to the motherboard's F_PANEL (Front Panel Header) SPEAK (Speaker, Orange) pins to determine if any beep code is being sent by the motherboard?


Use the following video to test your PSU. The video is applicable to other brands of PSUs too, not only Corsair's.

Corsair Video FAQ: How to test a Corsair power supply
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