Nvidia launches mobile Geforce GTX 680MX, GTX 675MX and GTX 670MX

When Apple launched the Imac earlier this week, many noted hitherto unknown Nvidia chips in product leaflets. Now the company officially launches not only the Geforce GTX 680MX and 675MX, but also another updated variant for mobile systems.

	GTX 680MX	GTX 680M	GTX 675MX	GTX 670MX
Architecture	Kepler	Kepler	Kepler	Kepler
CUDA cores	1 536 st.	1 344 st.	960 st.	960 st.
GPU-frekv.	720 MHz	720 MHz	600 MHz	600 MHz
Minnesfrekv.	5,0 GHz	3,6 GHz	3,6 GHz	2,8 GHz
Bus width	256-bit	256-bit	256-bit	192-bit
PCI-E-version	3.0	3.0	2.0	2.0

The Geforce GTX 680MX will be the new flagship for laptops, with as many as 1,536 CUDA cores in 720 MHz and GDDR5 memory in 5.0 GHz. This means a real step up from 1,344 CUDA cores and 3.6 GHz graphics memory for the GTX 680M.

One step down lands the Geforce GTX 675MX. The difference from the predecessor GTX 675M is above all that the architecture is changed from Fermi to Kepler, which means major modifications in clock frequencies and number of CUDA cores.

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Last but not least, the Geforce GTX 670M also gets a replacement in the form of the GTX 670MX. This is also a transition to the Kepler architecture, with 960 CUDA cores and 2.8 GHz GDDR5 memory on a 192-bit memory bus.

With the transition, Nvidia has phased over the entire top-performing segment of Geforce circuits to the Kepler architecture. A refined 28 nm variant of the older Fermi still remains further down the ladder, including the Geforce GT 620M.