ASUS GeForce GTX 780 STRIX OC Edition Review
Published by Hiwa Pouri on 17.06.14Page:
The card
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ASUS decided to equip the GeForce GTX 780 STRIX OC Edition with a new version of their famous DirectCU II cooler. In case of this card you get no less than five heatpipes, two six millimeter, two eight millimeter and one massive ten millimeter. Soldered to the heatpipes you find the fin stack which is being provided with fresh air via two fans. The fans on the new STRIX series are designed to spin only when GPU temprature reaches 65 degrees, which means that in 2D mode they are completeley off. Also, under low loads the fans don't start to spin. Under high-load the noise level is still silent, subjectively speaking.
The ASUS GTX 780 STRIX OC
Edition graphics card, or to be precise our sample of
it, allowed a maximum stable overclock of 1'160 MHz
for the GPU and 1'700 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 1.21 Volts and the memory ran at stock voltages.
A closer look at the PCB shows that ASUS equipped this card with a
ten phase digital power design. The GPU gets its current from eight phases and
the two phases left, take good care of the 6GB of GDDR5 memory. Once more, ASUS is using high
quality super alloy chokes. On the backside of the GPU you can find dedicated SAP
CAPs to maximize overclocking headroom.
Checking the voltage regulation chip, we find a digital multi-phase buck
controller ASP1212 from IR (International Rectifier). Furthermore, there is an
unidentified Richtek 2-phase PWM labelled 02=FA F2B taking care of a stable
current supply for the the memory.
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The memory chips used are made by SKhynix and carry the model number H5GC4H24MFR. They are specified to run at 1'502 MHz (6'008 MHz effective).
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