Power Supply Unit and image flickering.

Ekor · May 27, 2012

Hello,

I'm experiencing eye problems from my lcd monitor and my new desktop. When I plug my monitor into my old desktop the image is very easy on the eyes. But the new desktop seems to have more flickering and this is hurting my eyes.

The older desktop has a stronger psu (450 W) than my new one(300W). My new graphics card just installed reduced the flickering by a little but I suspect the weaker power supply unit is the cause of this bad screen.

Would getting a stronger psu reduce the flicker?

Thanks

bR0ken_pr0Jector · May 27, 2012

The PSU has nothing to do with the monitor nor graphics card output, so no.

rdfloyd · May 27, 2012

The GPU might not be getting enough power. 300W isn't much, especially if the PSU isn't any good.

Can you give us the system specs (need to know maker of PSU).

bR0ken_pr0Jector · May 27, 2012

Quote:

Originally Posted by rdfloyd

The GPU might not be getting enough power. 300W isn't much, especially if the PSU isn't any good.
Can you give us the system specs (need to know maker of PSU).

The system will draw what it needs, if the PSU is getting overdrawn then it should* shut down.

*should, implying what's supposed to happen, but the unit is unknown so far

Ekor · May 27, 2012

Quote:

Originally Posted by rdfloyd

The GPU might not be getting enough power. 300W isn't much, especially if the PSU isn't any good.
Can you give us the system specs (need to know maker of PSU).

Hi,

My graphics card requires minimum of 300 W of power, and my psu is exactly on 300W. So it's right on the line, and I suspect that it would be better to get a stronger psu just to have an optimal performance. It wont shut down the computer, but it may not be giving ideal power for my gpu. Before I installed the graphics card the flicker was far worse on the built in gpu on my processor.

My monitor does not flicker as bad on my older cpu, which has an older GPU but a stronger power supply unit.

Specifications:

Brand
ASUS

Model
ENGT430 DC SL/DI/1GD3

Interface

Interface
PCI Express 2.0 x16

Chipset

Chipset Manufacturer
NVIDIA

GPU
GeForce GT 430 (Fermi)

Core Clock
700MHz

CUDA Cores
96

Memory

Effective Memory Clock
1600MHz

Memory Size
1GB

Memory Interface
128-bit

Memory Type
DDR3

3D API

DirectX
DirectX 11

OpenGL
OpenGL 4.0

Ports

HDMI
1 x HDMI

D-SUB
1 x D-SUB

DVI
1 x DVI

General

RAMDAC
400 MHz

Max Resolution
2560 x 1600

SLI Support
No

Cooler
Fanless

Dual-Link DVI Supported
Yes

HDCP Ready
Yes

Card Dimensions
7.3" x 4.4"

Features

Features
Effective and quiet DirectCU Silent 0dB thermal design

Pump up graphics performance with Super Alloy Power that delivers 15% Performance boost, 2.5 longer lifespan, 35C cooler operation

bR0ken_pr0Jector · May 27, 2012

That 300 watt recommendation is for the card plus the rest of the computer, and on top of that it is exaggerated to cover people who buy really cheap power supplies that can't supply their stated maximum. The GT 430 really only draws barely over 20 watts under load, so there's no need to worry about that.

Getting a more powerful PSU will not improve the performance of the card.

Ekor · May 28, 2012

When my computer was plugged into the power bar, the flicker was much worse. When I plugged it directly in a wall socket then the flickering reduced, that's what still pushes me to believe it's the power supply unit. I'm just hesitating to switch because I'll void the warranty, but thanks for the input.

Ekor · May 29, 2012

Bump for more inputs.

BritishBob · May 29, 2012

Depends on what sort of flickering... The screens at college sometime flicker cos the screen PSU goes nuts.... Might be a cable is loose, I have had that before...

TBH, I have no idea. Cannot think for the life of me why a screen would flicker. Does the computer work fine on another screen?

Power Supply Unit and image flickering.

Ekor

bR0ken_pr0Jector

rdfloyd

bR0ken_pr0Jector

Ekor

bR0ken_pr0Jector

Ekor

Ekor

BritishBob

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