The card draws power from two 8-pin PCIe power connectors and features 20-phase VRM with separate controllers for the GPU and memory+PLL. The GPU and memory draw power from the power connectors while the PLL draws power from the PCIe slot, which means memory OC isn't held back by the PCIe slot's power supply.
The GTX 780 Ti Lightning has a 993MHz core, 1059MHz GPU Boost, and 3GB GDDR5 memory clocked at 7000MHz. The model features a cooling solution with a large nickel-plated copper base, seven 8mm diameter copper heatpipes, and multiple aluminium fin stacks that are cooled by the three fans. MSI says the cooler can handle a thermal load of up to 550W. The Lightning logo on top of the card indicates the thermal load, it' white up to 150W, gets brigther between 150W and 210W, and goes red beyond 210W.
The reviewer was able to overclock that up to a staggering 1248 MHz core, and 1314 MHz GPU Boost, while leaving the memory untouched; and the memory in a separate attempt up to 8.00 GHz, while leaving the GPU untouched. The card was tested on a system with Core i7-4960X, 16 GB of quad-channel DDR3-2500 MHz memory, and an MSI Big Bang XPower II motherboard. It achieved 3DMark 11 (performance preset) score of P17872 single-handedly.