Technical Specifications and Architectural Modifications
The following table helps you compare the GeForce GTX Titan with AMD’s Radeon HD 7970 GHz Edition and NVIDIA’s GeForce GTX 680:
So, the Kepler-based GK110 chip is manufactured on 28nm tech process and incorporates 7.1 billion transistors. Featuring 2688 CUDA cores, it delivers a theoretical SP computing performance of 4.5 teraflops.
Here’s an interesting comparison Nvidia makes against Intel’s top-end CPU:
The GK110 has 15 SMX units but only 14 of them are active. There are 224 texture-mapping units and 48 raster operators in this GPU.
As opposed to the GK104, which is used in the GeForce GTX 680 for example, the GK110 has 64 double-precision units (FP64) with a peak theoretical performance of 1.3 teraflops. Thus, the GK110 has as many as 896 execution cores with support for double-precision computing.
Then, the GeForce GTX Titan features a 384-bit memory bus whereas Nvidia’s previous flagship GeForce GTX 680 had a 256-bit one. The amount of onboard memory is increased to an impressive 6 gigabytes. This should help the new card feel at ease at extremely high display resolutions.
Besides the architectural enhancements, the GeForce GTX Titan supports the second version of the dynamic overclock technology GPU Boost:
The GPU clock rate used to depend on the voltage/power limit…
…but GPU Boost 2.0 adds a temperature limit for GPU overclocking.
This limit is set at 80°C for the GK110 by default but the user can increase it to 94°C to make the card able to work at higher clock rates.
In other words, GPU Boost 2.0 can, on one hand, increase the performance of the GeForce GTX Titan when it’s possible and, on the other hand, ensure automatic control over its heat dissipation, keeping GPU temperature within safe limits.
Running a little ahead, we can tell you that temperature is key to successfully overclocking the GK110 chip.
At the time of our writing this, the Titan was fully supported by the EVGA Precision X version 4.0.0 utility:
The utility can be used to overclock the Titan by manipulating such parameters power and temperature targets as well as by increasing voltage.
And now let’s take a look at the card itself.