NVIDIA GeForce GTX 750 Ti Maxwell GPU Review
Overclocking the GTX 750 Ti
We also spent a little time overclocking the GeForce GTX 750 Ti to see what kind of additional frequency headroom it had left under its hood. For these tests, we used the latest edition of EVGA's Precision X GPU tweaking utility, which is compatible with NVIDIA's GeForce GTX 700 series products, including these latest Maxwell-based products.
Like Kepler, overclocking a Maxwell-based GeForce GTX series graphics card requires a bit more tweaking then previous-gen products, due to all of the new options available and the complexities associated with GPU Boost 2.0. Sometimes, you’ll find that increasing a particular voltage or frequency may appear to function properly, when in fact performance decreases due to errors or throttling. You may also find that the actual GPU Boost clock may travel above or below the designated offset value when the power and/or temperature targets are also increased.
EVGA's Precision X Tweaking Utility Running On The GeForce GTX 750 Ti
We did a few things when experimenting with overclocked speeds on the GTX 750 Ti. First we tried the most basic option available--we simply changed the temperature target from the default 80'C and increased it to 95'C to see what kind of impact it would have on performance. Then, to push things much further, we increased the temperature target and upped the GPU and Memory clock offsets and ran a few tests. Unfortunately, due to time constraints, we didn't overclock both of the GeForce GTX 750 Ti cards we had on hand, and focused solely on EVGA's FTW w/ ACX model. We have seen reference GeForce GTX 750 Ti cards running at upwards of 1.3GHz, however.
When all was said and done, we were able to take the EVGA GeForce GTX 750 Ti ACX FTW all the way up to an impressive 1.468GHz GPU clock, with 5.63Gbps memory. That’s a huge jump over NVIDIA’s reference clocks of 1085MHz / 5.4Gbps. It certainly appears NVIDIA was very conservative with reference clocks this time around.
While we had the card overclocked, we re-ran a couple of high-resolution tests and saw some nice performance improvements. In face, the overclocking allowed the EVGA GeForce GTX 750 Ti to overtake the Radeon R9 270X in Bioschock Infinite.