Nvidia GTX780Ti Review (1600p, Ultra HD 4K)

To overclock the Nvidia GTX 780 Ti today we used the latest version of MSI Afterburner which is based on RivaTuner.

As we mentioned earlier in the review Nvidia have added a new power balancing feature which helps to get the most out of overclocking the hardware. The GPU gets power from three sources, the 6 pin and 8 pin connector and the PCI Express interface. When a user overclocks the hardware the power delivery can be unbalanced with power drawn from one source more than the others, potentially maxing out the clock speeds.

Nvidia say the new feature can direct power from one input to another, meaning that if you max out one power source then the algorithm will take more power from others to compensate. Time to test it out.

I don't think we have seen such incredible headroom from a high end core. Obviously all samples will vary slightly, but we managed a 28% overclock on the core before artifacting would occur. We weren't expecting a lot of headroom on the GDDR5 memory, especially at such high default speeds. We managed to increase this to 1,800mhz (7.2Gbps effective).

Even with the AMD R9 290X overclocked to 1,100mhz core, the GTX 780 Ti at 1,122mhz performs at a significantly higher level, scoring 17,522 points – a new record in our labs for a single GPU.

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