NVIDIA GeForce GTX 780 Ti 3GB Video Card Review

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NVIDIA GeForce GTX 780 Ti Ready To Become The Fastest Video Card

When we first told you about the NVIDIA GeForce GTX Titan video card back in February 2013, we noted that it was powered by NVIDIA’s GK110 ‘Kepler’ GPU and that one of the Streaming Multiprocessors (SMX unit) was disabled. Our review on the GeForce GTX Titan 6GB showed that the card was easily able to beat any single-GPU powered card on the market at the time. NVIDIA followed up the launch of the GeForce GTX Titan 6GB with the more affordable GeForce GTX 780 3GB  that had two more SMX units disabled at the end of May 2013.  Those two cards were all that NVIDIA needed to dominate the high-end desktop graphics card market for nearly a year. Many gamers and enthusiasts forgot that a fully enabled Kepler GK110 GPU even existed. NVIDIA had certainly not forgotten, they just didn’t mention it. NVIDIA was keeping this trump card close to their chest and waiting for the right time to unleash the beast. 

best-gpu-ever

When AMD released the Radeon R9 290X video card, they claimed it was the fastest in the world and our review showed that it was overall the gaming graphics card on the market at normal resolutions and then again when we tested it on a 4K monitor.  Around the time of the AMD Radeon R9 290X launch, NVIDIA announced that the would be releasing the GeForce GTX 780 Ti that would be their new flagship card. Shortly after that announcement, NVIDIA cut the prices some of the cards and said that the GeForce GTX 780 Ti would be $699.  This was a very unusual move as seldom do we see NVIDIA announce a card, let alone the pricing, weeks in advance.

AMD was able to say they had the fastest video card on the planet for exactly two weeks, but now NVIDIA has released the GeForce GTX 780 Ti and claim that they now have the fastest card in the world!

NVIDIA GK110 Block Diagram

Compared to the NVIDIA GeForce GTX 780, the GeForce GTX 780 Ti has had 3 extra SMX units enabled inside the NVIDIA GK110 Kepler GPU.  This means that all 15 the SMX units in the 5 graphics processing clusters are now fully enabled and that the GK110 is running all out (unless there is a sixth cluster). The GK110 block diagram above shows all 15 SMX units on the GK110 Kepler GPU.  Each SMX unit has 192 CUDA cores, so the GeForce GTX 780 has 2304 CUDA cores and the GeForce GTX 780 Ti has a whopping 2880! This is a 25% increase in just the number of cores and that is before NVIDIA bumped up the clock speeds!

gtx780ti

NVIDIA just didn’t enable more cores though and walk away. They also increased the GPU clock speeds on the GeForce GTX 780 Ti to 875MHz base and 928MHz boost from 863MHz base and 902MHz boost on the GeForce GTX 780.  This is a subtle 1.4% increase on the base clock and 2.9% on the boost clocks, but remember that the GeForce GTX 780 Ti has 25% more cores as well.  NVIDIA gave the memory a major 16.5% speed increase, so the 3GB of GDDR5 memory running on the 384-bit bus has increased from 6008MHz (effective) to 7000MHz (effective). This frequency increase has caused the memory bandwidth to go from 288.4 GB/s all the way up to 336.0 GB/s, so a 16.5% clock increase yields exactly that when it comes to memory bandwidth! 
 
gtx780-gpuz
 
Many were keeping their fingers crossed that the NVIDIA GeForce GTX 780 Ti would have more graphics memory, but NVIDIA left the frame buffer at 3GB.
 
  GTX 780 Ti GTX Titan GTX 780 GTX 680
GPU GK110 GK110 GK110 GK104
Streaming Multiprocessors 15 14 12 8
Stream Processors 2880 2688 2304 1536
Texture Units 240 224 192 128
ROPs 48 48 48 32
Core Clock 875MHz 837MHz 863MHz 1006MHz
Boost Clock 928MHz 876MHz 902MHz 1058MHz
Memory Amount 3072MB GDDR5 6144MB GDDR5 3072MB GDDR5 2048MB GDDR5
Memory Clock 7000MHz 6008MHz 6008MHz 6008MHz
Memory Bus Width 384-bit 384-bit 384-bit 256-bit
Memory Bandwidth 336.0 GB/s 288.4 GB/s 288.4 GB/s 192.26 GB/s
TDP 250W 250W 250W 195W
Suggested Power Supply 600W 600W 600W 550W
Transistor Count 7.1B 7.1B 7.1B 3.54B
Manufacturing Process TSMC 28nm TSMC 28nm TSMC 28nm TSMC 28nm
Street Price
$699 $999 $499 EOL

The NVIDIA GeForce GTX 780 Ti looks virtually identical to the GeForce GTX 780 as it uses the same PCB design and GPU cooler. This means that the card is 10.5″ in length and that you’ll need a 600W or greater power supply with the needed 8-pin and a 6-pin PCIe power connectors for proper operation. We have a gallery of seven PR images of the NVIDIA GeForce GTX 780 Ti graphics card that you can scroll through below.

Since there are no visual changes other than the updated name on the fan shroud we’ll skip straight to testing.

 

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