If you peek to the right of the Crossfire fingers on the photo you'll see a small switch, the 1 and 2 position are actually a Dual BIOS toggle switch. The normal BIOS allows overclocking but does not unlock over current protection or disables active phase switching.
The special LN2 BIOS does in fact unlock OCP and disables active power phase switching. It also allows for a higher CCC range, as well as a higher PowerTune range. That should allow for higher overclocks.
Once powered up you can see an array of blue LEDs on/off indicating the active power phases (a 17 phase PWM design).
You will need to hook the card up to your power supply with two 8-pin PCIe PEG connector. We recommend a 550W power supply to start with, with one card of course.
If you use the included the voltage monitor cables then you can connect a digital multi meter to it, here we tap the memory running at 1.61 Volts.
MSI Radeon R9 390X Gaming 8G OC review We review the MSI Radeon R9 390X Gaming 8G OC edition. The cards equipped with that renamed Hawaii GPU, now called Grenada. Thanks to a huge triple slot air cooler based on the TwinFrozr V design the ...
MSI Radeon R9-290X Lightning review This review will cover the MSI Radeon R9-290X Lightning, this graphics card is considered the beast that rules them all. With a PCB redesigned from ground up and usage of only the best components ..
MSI Radeon R9-290X Gaming OC review We review the MSI Radeon R9-290X Gaming OC. The cards equipped with that Hawaii GPU now is proper cooled thanks to the TwinFrozr cooler and steadily running and purring at just over 70 Degrees C, that...
MSI Radeon R9-270X HAWK review In this review we take a peek at the Radeon MSI Radeon R9-270X HAWK. Armed with a customized PCB and their TwinFrozr model IV based coolers they factory overclocked the product.