Slow hash rate?

[vElectrixx]

A lot of people who have been using the same GPU as me have a hash rate averaging 150kh/s. When mining (using guiminer), my hash rate averages 93kh/s. Should I adjust my settings for my mining software? This is what I set it to:

Thread concurrency: 7168
Vectors: 1
GPU Threads: 1
Worksize: 256
Intensity: 18

My GPU has these specs:
Clocked at: 800mHz
Memory: 1GB
512 Stream Processors

The specific model of my GPU is the HIS iCooler H775F1GD HD 7750

**Edit: My GPU temps don't go past 60C when mining.