Brief:
MSI’s Radeon HD 7970 Lightning is a heavily customized implementation of the HD 7970 with focus on performance and overclocking. The card uses a beefed up voltage regulation circuitry and massive dual-fan heatsink to ensure stable operation at MSI’s clocks of 1070 MHz core and 1400 MHz memory.
Link:
http://www.techpowerup.com/
