Mathcalv

Hi
I was wondering if you can help me i bought a new pc a few weeks ago and I get tearing on the screen whilst in games such as Counter Strike Source and World of Warcraft

My system specs are;
Asus P5N-E 650i sli motherboard
E2200 Core Duo sck 775 CPU
2 gig OCZ 6400 800mhz ramm
7800 GTX 256MB XFX model
and a Artic Power 500w which from reviews will power this system

In desktop I have no problems but when I go in to games the screen tears and gets worse and worse.

My temp for GPU is max at 54 deg inside my case which is low compared to most people with this card.

My framerate in game is amazing and quality is good but the tearing lets me down I have read many different forums saying the 7800 GTX has problems or glitching.

I have downloaded all the drivers needed and my bois is all upto date it is not OC at all and was just wondering if I had been unlucky and bought a damaged card.

Help would be greatly appreciated would save me lots of time of hassling the company for replacment if its the card in general.

Matthew

1 g0t 0wn3d

i would ditch the power supply and get a higher quallity one just to test though enable vsync in the games

Mathcalv

Also in Speedfan it shows no voltage on +3.3v rail
But then once i go in to Asus probe i have +3.31v on the rail
I dont know if this is a problem with either Speedfan or Asus Probe
Just a little but more info on my situation

1 g0t 0wn3d

thats shouldn't be a problem what is the 12v rail at?

Mathcalv

Thanks I will try vsync and get back to you as soon as possible could you list a couple of makes I would only have a budget of around £40 or £50 max though after spending 260 on this system with out a case lol

Mathcalv

The 12v rail is 11.97v on both Asus probe and Speedfan although th nominal value asus says should be 12.20v

and my +5.0v is 4.92v

Mathcalv

I tried vsync in game but I still get it slightly I don't know how to but what the problem is I just get lines down the screen of the picture seems to be cutting im in college atm so when I get home ill try and copy in a printscreen of the problem and see if you can help from there.

1 g0t 0wn3d

when you say it gets worse and worse the longer you play that points to something overheating if its not the video care there is a good chance its the power supply being overworked

Mathcalv

My friend said 2day it could be windows issues. I do not have heating issues and the power supply should be up as its not high resolutions and they not really hard games to run and i cant see how it could be that as another friend is running 2 8500GT in sli with a 500w power supply that came with his case ill write back to see if windows can help me lol :P

dai

when you build a system you work out what psu it requires
then if the cash is short you downgrade something else not the psu
the 8500 in sli pull only half the wattage of a single 7800gtx

Mathcalv

You have any amount that the 7800 gtx pulls my psu has 18 amps on the 12 volt rail and was play Css just now and it seemed stable I have looked online and some people say it needs 18 amps some say 22 and some say even 26 amps im confused which one is it.

dai

agp=min 18a
pcie=min 26a
and from a quality psu cheap generics are only ok in older systems from the win 98-me era

1 g0t 0wn3d

also on the subject 7800gtx was power hungry it takes more power then my 7900 gtx and thats only ~20 watts less then a 8800 gt

So the 7800 should have atleast a corsair 550 watt

Mathcalv

Thanks i found out that the corsair 550 watt produces 41 amps one the + 12v rail which will power the 7800 gtx so glad i that you helped me figure out this problem.