Flicker in 3d apps/games

BBryce

BBryce

BBryce

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Joined
15 Sep 2009
Posts
7
Hi guys,

I am getting flicker in most of the games I am playing (but not all), it is in the form of horizontal lines flicking up and down the screen. While it isn't hugely noticable, it is getting really annoying. I have tried virtually every solution I can find on the internet, including resolutions, refresh rates, v-sync, all options in CCC etc. I have swapped monitors and cables and it still happens with no improvements at all.

I am running a Radeon HD 4890 with Windows 7 64bit.

Now i'm thinking i'm most likely looking at a faulty graphics card, but I also wonder whether it may be my PSU, as it's not a well-known brand (800w though).

Any more suggestions before I order a new card?

Thanks,
 
Have you got another card (even a cheap one) to try? Another PC (maybe a friend's) to test the GPU in?
 
I tried another video card and everything was fine, but this card didn't need extra power from the PSU. I haven't got access to any other computers with a PSU with 2x PCI-E power.
 
Also, I've just tried the Crysis demo, and the tearing is horrendous, worse than I've seen in any other game, up to the point where it's actual tearing.

Something I did find weird though, on the loading screen, when the loading bar was still (nothing moving on screen) the flicker would stop altogether, but when it was moving up, it was flickering.
 
Do you have another PSU?

I was thinking you could run both. Use your current PSU to run the GPU, and another for everything else.

To start the GPU PSU, you'd need to short out the green and any black wire on the ATX connector, at the same time as you turn the PC on.

This would test whether it's a PSU or GPU problem.
 
I've got an update to my problem.

I just tried another graphics card (HD 5670) and there was still flicker, though it was much fainter, but still there. This card doesn't need any PCI-E power from the PSU at all.

I'm so confused. :mad:
 
I've tried both PCI-E slots on my mboard, still flicker. Haven't got a spare PSU hanging about either :(

Also, the flickering isn't only occuring inside the actual game windows. Say I have a game open in windowed mode, there would be flicker on my display in all other programs.
 
Try rolling back to a older driver version as well.

I've found that the newest driver is not always the best. 10.4's give me the best all round performance at the mo :)
 
OK now I really am stumped.

My brother's PC is literally right next to mine and we have the exactly the same monitor. I fixed my rig up to his cables and monitor and I have the same problem. I then tried my card in his PC (had to route my PCI-E power cables from my rig to power it) - same problem. I figure it's a faulty card.

I order a new card (5750) and get exactly the same problem, RMA it. Next I get a new, better PSU thinking the card must not be getting the power it needs - doesn't help.

Now there's only a few things I can think of; the monitors (as they're the same model), interference coming from somewhere in my house or the DVI-VGA adapter I have to use with my card. I tried the adapter with my brothers setup, he's still fine. I then literally turned off absolutely everything in the house except my setup - still the problem persists.

Then I get an old crappy viewsonic lcd monitor out and try it - yes, still there.

Now, the funny thing is when I hook my rig up to my 37" LCD TV via DVI-HDMI adapter I can't see the flicker at all in the same games.

I'm so confused right now and i've spent so much time trying to fix this. Any more suggestions?
 
It's probably interference caused by the PSU when you are using the VGA analogue lead.

I also get some horizontal lines on my psu/viewsonic VGA combination. I've noticed it's worse since I switched out a defective but more expensive PSU. It was there before just more subdued.

Maybe graphics card also has something to do with it, remember that even with no PCI-E connectors you still get 12v direct from the pci-e slot.
 
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