I've got a 1600x900 monitor and i want to make it 1920 x1080. is there any way to do this.it doesn't have really turn into 1920x 1080 it just should be able to put the same pressure on the gpu as 1920x1080 would.i would really appreciate your help on this.
No, it doesn't work that way. You have a monitor with 1600 pixels across, with 900 pixel down in a grid. You can't turn it into any other res. You can emulate lower resolutions like 1440x800, but you can't make pixels appear out of no where.
if you want to create more stress on the GPu, try increasing the AA from the in-game settings.
or try forcing AA through the driver control options.
on all cards, forcing FSAA will put a lot of stress on the gpu, sometimes halving the FPS,
Which monitor are using anyways?
You can't set the resolution up from your native resolution. Either the screen won't fit or it would appear small.
And as mayankleboy said, you can try turning on AA in games if you want to put some stress to your video card.