The rumour mill for the GTX 660 has been fairly abuzz for a while. With it virtually a known that the latest Kepler card to come out will be based on (a reduced version of) the GK-104 core in the GTX 680 but at a more affordable price, it’s a card that is justifiably generating a lot of interest.
As above, Acer appear to have posted an upcoming prebuilt desktop specced out with the card before they should have. Availability for this particular ‘G3620’ desktop was suggested (before Acer took the page completely down) for June 25th. It’s possible this was is an OEM card, however Nvidia tends not to muddy the waters with higher-end parts. Acer also did a bit of describing:
NVIDIA GTX 660 1.5 GB – Ultra-fast graphics card with 1536 MB of dedicated video memory and support for DirectX 11. Play heavy graphics-intensive games and watch high-definition movies and edit photos with high resolution.
The most likely configuration for the ‘660 is considered six ‘SMX’ clusters implying 1152 ‘CUDA cores’. Given the purported 1.5GB of RAM, this would typically a 192-bit memory bus (given the way these things usually work). There are also some suggestions that the card (which from the rear-shot is unsurprisingly a dual-slot one) could be artificially delayed due to a backlog of GTX 570s.
Given the GTX 660's potential to shake up the all-important mid market currently held by the AMD HD 7870 and 7850, Atomic will make sure to keep you informed of further developments.