#GTX 780 FP64 FULL#
Memory clocks meanwhile are still at 6GHz, the same as Titan, giving GTX 780 the full 288GB/sec of memory bandwidth to work from. Whereas GTX Titan had a base clockspeed of 837MHz, GTX 780 is 2 bins higher at 863MHz, with the boost clock having risen from 876MHz to 900MHz. Note however that while the memory bus is the same width, NVIDIA has dropped Titan’s massive 6GB of RAM for a more conservative 3GB, giving GTX 780 the same memory bandwidth while giving it less RAM overall.Īs for clockspeeds, clockspeeds have actually improved slightly, thanks to the fact that fewer SMXes need to be powered. Clockspeeds aside, this means that GTX 780 maintains Titan’s ROP/memory throughput rather than taking a performance hit, which bodes well for ROP and memory-bound scenarios. Moving on with our Titan comparison, much to our surprise NVIDIA has not touched the ROP/memory blocks at all (something they usually do), meaning GTX 780 comes with all 48 ROPs tied to a 384bit memory bus just as Titan does. This is nearly identical to what happened with the GTX 650 Ti, and as with the GTX 650 Ti it’s largely an intellectual curiosity since the difference in GPCs won’t notably impact performance. GTX 780 cards will either have 5 GPCs or 4 GPCs depending on whether the 3 disabled SMXes are all in the same GPC or not. Titan’s 14 SMXes have been reduced to just 12 SMXes, reducing the shader count from 2688 to 2304, and the texture unit count from 224 to 192.Īt the same time because NVIDIA has gone from disabling 1 SMX (Titan) to disabling 3 SMXes, GTX 780’s GPC count is now going to be variable thanks to the fact that GK110 packs 3 SMXes to a GPC. This means that on the architectural side we’re looking at the same GK110 GPU, this time with fewer functional units. There are serious trade offs with either one.Īs the first of the desktop GeForce 700 lineup, GeForce GTX 780 is in almost every sense of the word a reduced price, reduced performance version of GTX Titan. So in a way those who spent a bomb on the GTX Titan got ripped off since the upcoming GTX 780 performance is close to the Titans and at a cheaper price. This makes the fans 20% more efficient by requiring lower power levels. EVGA spared no effort to ensure that even the fan blades were of the highest quality with a 700% increase in strength, and 25% lower weight when compared to competitors dual fan designs. A reinforcement baseplate maintains a straight PCB, and helps lower mosfet temperatures by 7% and memory temperatures by 15%. Starting with a 40% increase in heatsink volume, the ACX is more efficient at dissipating heat, allowing for 15% lower GPU temperatures. The EVGA ACX cooler uses a double ball bearing design. EVGA will also be offering the reference single fan solution from Nvidia. The ACX cooler should give the Superclocked card an edge when dealing with additional overclocking while keeping temperatures in check. Yup, and check out EVGA's new ACX cooler for their superclocked model:ĮVGA Geforce GTX 780 Superclocked w/ EVGA ACX cooler detailed