Lag spikes, graphic problem or network related?

[Loyd91]

Hey guys, well I got a problem with my graphic card I guess, I am using a 512mb ati radeon 5670 graphic card and my games are ... let's say having lag spikes, not all games but games which I play online.

System spec

AMD Phenom II X2 3.1 GHz 550
Ati Radeon 5670 512MB
PSU: Gigabyte Superb 550P, 550W
OS: Windows 7 Ultimate 32bit

I have read at some forums that it is an conflict with the realtek audio drivers, I disabled them but the lag spikes occur even then.
They come only on online games like when I am moving with something it begins to stop and go, like a very tiny lag.

 

[rolli59]

Can be connection problems especially if only online.
How much memory is installed?

 

[Loyd91]

2GB of it planning to get 4GB soon, as of the internet provider I am quite a long with them and I had no problems.

 

[rolli59]

It can be that windows is reaching into the swap/page file and therefore lagging. If you have other applications running in the background try switching them off and see if game play improves.

 

[Loyd91]

I tried that as well it didn't help at all, any other ideas maybe?