Asus supply a new version of their GPU Tweak on the software disc bundled in the box. We installed this to test how far we could push it.
We were a little surprised to see that the ASUS GPU tweak software hit a memory limit at only 1,400mhz, so we tried the latest version of MSI's Afterburner tool.
MSI's Afterburner software gave better results, hitting a peak of 1,604mhz on the memory. The core clock speed was limited to 1,207mhz and it was perfectly stable at these speeds. This translated into a 12.6% additional overclock on the core, and a 18.8% additional overclock on the memory.
Sometimes overclocking a card past the ‘out of box' speeds doesn't give much reward, but we can't say the same when overclocking the GTX 750Ti. The increase in performance is noticeable and well worth the time.