NVidia GeForce GT 640 (GK107) to launch at Computex 2012

Following their successful launch of Kepler with the GK104 GPU, and the relaunch of entry level Fermi chips in the form of entry level 600 series cards, various news sites have reported on rumors that NVidia will be launching the GK107 GPU in the form of the GT 640 series at Computex 2012, on June 5. Many of the specs that have been reported on indicate that at least 2 of the 3 variants will have the same or similar specs to the GT640 OEM cards.

The entry level GT 640 will have a core clock speed of around 797 MHz, with an unknown number of CUDA cores. It will have 1 GB or 2 GB DDR3 memory with a 128-bit interface. It is also said to be a low profile card, which may make it suitable for some HTPC and small form factor applications.

	Entry Level GT 640	Entry Level GT 640 (OEM)	Mid Level GT 640	Mid Level GT 640 (OEM)	Top Shelf GT 640	Top Shelf GT 640 (OEM)
CUDA Cores	?	384	?	144	384	384
Core Clock Speed	~797 MHz	797 MHz	720 MHz	720 MHz	950 MHz	950 MHz
Memory	1024 or 2048 MB	1024 or 2048 MB	1536 or 3072 MB	1536 or 3072 MB	1024 or 2048 MB	1024 or 2048 MB
Memory Interface	128-bit	128-bit	192-bit	192-bit	128-bit	128-bit
Architecture	Kepler	Kepler	Kepler	Fermi	Kepler	Kepler

The mid level GT 640 is said to have a core clock of only 720 MHz, again with an unknown number of CUDA cores. It will have 1536 or 3072 MB DDR3 memory, with a 192-bit memory interface. This will suit people for whom memory bandwidth is more important than a core clock speed.

The top shelf GT 640 will have 384 CUDA cores, clocked at 950 MHz, making it far superior to the other two options for most users, but this naturally comes at a higher cost. It will have 1 GB or 2 GB GDDR5 memory, with a 128-bit interface, which also theoretically gives the highest bandwidth (depending on memory clock speeds).

As shown in the above table, the mid level OEM version uses a FERMI core (according to the specs at NVidia), while all the other options appear to use a Kepler core (ie GK 107). This is also said to be the same core that will be used on GT(X) 650, 655 and 660 cards.

It is also said that the GT 640 cards will be 5.7 inches long, which again helps with compatibility for some smaller builds and HTPCs.