Gigabyte GeForce GTX 950 Xtreme Gaming Review
Published by Marc Büchel on 23.11.15Page:
The card
Gigabyte decided to equip the GeForce GTX 950 Xtreme Gaming with a new version of their famous Windforce 2x cooler. The 2x in the name stands for two fans, whereas both fans measure 9 centimeters in diameter. In the case of this card you get one single heatpipe with 6 millimeter diameter. Apart from that there is an aluminum baseplate through which the single heatpipe is routed and directly establishes contact with the naked GPU. Soldered to the heatpipes you find the fin stack which is being provided with fresh air by the two mentioned fans. The fans on the new Windforce 2X cooler are designed to spin only when the GPU temperature reaches 60 degrees, which means that in 2D mode they are off and the card is completeley silent. Also, under low loads the fans don't start to spin. Under high-load the noise level is still silent, subjectively speaking.
The Gigabyte GTX 950 Xtreme Gaming graphics card, or to be precise our sample of
it, allowed a maximum stable overclock of 1'518 MHz
for the GPU and 7'300 MHz on the memory side. We used Furemark V1.11.0 Geeks3D
benchmark with 15 minutes duration. With these clocks we had to feed the GPU
with 1.206 volt and the memory ran at stock voltages.
A closer look at the PCB shows that Gigabyte equipped this card with a 4+1 phase digital power design. The GPU gets its current from four phases and one phase takes good care of the 2GB of GDDR5 memory. Once more, Gigabyte is using quality chokes and decent caps. Checking the voltage regulation chip, we find an NCP81174 controller from ON Semiconductor.
The memory chips used are made by Samsung and carry the model number K4G41325FC-HC28. They are specified to run at 1'750 MHz (7'000 MHz effective).
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