Before you can use this card subzero, it requires several modifications to get more volts to the GPU and rams. This to allow higher clocks, but also due to the higher power draw, OCP (Over Current Protection) and OVP (Over Voltage Protection) needs to be adressed too. Last but not least when going subzero with these type of cards you need a cold slow bios. Otherwise at a certain minus temperature things will get very choppy and might even score worse than a stock air card.

Our GPU pot used is SF3D's FAT pot made by Polish overclocker Ryba. Sadly for the GTX560, no mount is included so you need to improvise a bit. Bit with 3 screws it fits too.

Let's get it on.

We started with 3DMark011 as we were lacking a bit of speed in the CPU department. This benchmark is much alike Unigene's Heaven test, very very GPU dependant. The CPU participation in the final output is minimal.

We tested first at 1.33vGPU though immediately got rewarded with a black screen. Not enough voltage ? Upped to 1.35vGPU... same outcome ! Darn this can't be happening. We went colder to -100°C, still same issue. Lowered the voltages and hallelujah we got a test completed. 1.22-1.25 vGPU seemed to be a sweetspot at first. After a dozen of tries we finally reached 1250Mhz on the GPU and 2550Mhz on the rams. Not an earthshattering improvement from air as we are about 150°C colder than the 1050mhz air runs.

Good enough for a 3rd spot in the 560 Ti ranking, the two cards above are both MSI 560 Ti Hawks. Those have a stronger power design than this reference based card. With a Hawk card 1400mhz or more is easily doable. Massman even has done 1500mhz and more on his particular MSI Hawk. It took us almost over 2 hours just to get this run done. The Gigabyte P67A UD5 motherboard was acting up from the start. Loosing sometimes video signal, even with the card at stock. All in all making this benchsession one of the least pleasant I ever did lol.

While benching 3DMark Vantage the system became even more erratic. Loosing signal out of the blue. Apparently it was the motherboard going down as the same board acts up now with all videocards ( on air at stock clocks ). Yet after insisting we managed to still do 1200/1250. Not brilliant, but just enough to remain in the top 10 at HWbot.org

The videocard was run around minus 114°C in the end of the benching session. Only 1.2vGPU could be used in Vantage, as higher gave us issues (again).