The strongest three chips are called GT 750M, GT 745M and GT 740M

Apr 1, 2013 13:32 GMT  ·  By

NVIDIA has finally made the official introduction of its new series of graphics processing units for mobile computers: the GeForce GT 700M line, complete with GPU Boost 2.0.

Oddly enough, the NVIDIA GPU Boost 2.0 technology is the main difference between the newcomers and the GTX 660M, GT 650M, GT645M, and GT 640M and GT 640M LE.

The core features are largely similar, but the GPU Boost 2.0 and higher memory clocks are a definite advantage.

Overall, the newcomers should perform between 15% and 25% better than their predecessors.

And now, the specifications. We will start with the strongest chip and work our way down from there.

The so-called flagship is the GeForce GT 750M and is powered by the 28nm GK107 or GK106 processor.

It has a memory interface of 128 bits and a top VRAM amount of 2 GB (either GDDR5 or DDR3). The bandwidth is of 80 GB/s tops and the memory frequency can reach 5 GHz.

The CUDA core count is 384 and the top base frequency is of 967 MHz. GPU Boost 2.0 will, of course, activate when appropriate.

The “mid-range” chip, GeForce GT 745M, is a GK107 with the same number of CUDA cores. It is actually identical to the GT 750M, save for the clock speed, which is 837 MHz.

That leaves the GeForce GT 740M, which bizarrely enough has a clock of 980 MHz but the same other specs as GT 745M. We suppose NVIDIA might have mixed up the speeds between the two.

That's it for the GK106/GK107-powered discrete GPUs. Of the other four, two use GK208 28nm chips (384 cores) and the others are rebranded Fermi chips (96 CUDA cores).

The former two are called GeForce GT 735M and 730M. They get 2 GB DDR3 (or less) at 2 GHz, 64-bit memory bus and 889 / 719 MHz GPU clock.

The 720M and 710M also have up to 2 GB DDR3, but only 938 / 800 MHz with Boost and memory speed of 2 / 1.8 GHz.