The card
Gigabyte decided to equip their new GeForce GTX 960 G1 Gaming with the
latest version of their own cooler, which is called WindForce 3X 300W. It
features four 6mm copper heatpipes. Soldered to the heatpipes, there is a large and dense fin
stack which is being cooled by three 80mm fans.
Overall the cooler is well built and compared to the predecessor the copper base
plate is more even that what it looked like on the GTX 760. Nevertheless the
number of heatpipes has been reduced by one. Meanwhile also Gigabyte implemented
a feature that makes the fans turn off as long as there is low load on the GPU.
If the temperature drops below 43°C or GPUs power consumption is lower than
32W the fans are deactivated. If the GPU hits 62°C or if the power consumption of
the chips is higher than 60 Watts, then the fans are there for active cooling.
Another closer look at the cooler reveals that there is a large coper plate, which
helps distributing heat evenly to the numerous heatpipes. Sticking to the copper
plate we find thermal pads, which are touching the memory chips and VRM area.
The Gigabyte G1 Gaming GTX 960 graphics card, or to be precise our sample of
it, allowed a maximum stable overclock of 1'550 MHz
for the GPU and 2'050 MHz on the memory side. We used Furemark V1.11.0 Geeks3D
benchmark with 15 minutes duration and 3DMark Fire Strike Extreme With these clocks we had to feed the GPU
with 1.25 Volts and the memory ran at stock voltages.
A closer look at the PCB shows that Gigabyte equipped its card with an 6+1
phase power design. The GPU gets its current from six phases (NCP81174) and on
additional phase (NCP5239) is there to handle the memory.
The memory chips on the Gigabyte G1 Gaming GTX 960 come from Samsung and carry the
model number K4G41325FC-HC28. They are specified to run at 1'750 MHz (7000 MHz
effective).