I got 3D furmak 11
I think you mean 3Dmark11 right?
furmark is a different program. I use furmark for stability testing. It is a very stressful program, and you can set your resolution to 1920x1080 (or whatever you want) run full-screen and change other options.
Furmark is designed to heat up your GPU, so you will see higher temps in FurMark than you will anywhere else
MSI Kombustor is also a good one, (based on furmark)