MSI N680GTX Twin Frozr 4GB is available in two variants, one is clocked at standard 1006/1058/1502 MHz, while the second has been overclocked to 1058/1124/1502 MHz (base, boost, memory). Both cards are the first MSI models equipped with 4GB of GDDR5 memory and use custom-design PCB. Cards require two 6-pin power conectors. They also feature dual-fan Twin Frozr III cooling solution which increases the airflow, while sustaining acceptable noise level.
MSI GeForce GTX 680 4GB Twin Frozr OC is already available for $599.