Temperatures are higher than on other GTX 770s we tested. Load temperatures also scrape the 80°C barrier at which Boost 2.0 introduces additional throttling to keep the card cool. Given that we are seeing a decent performance improvement over the NVIDIA reference design at the same clocks, I'd say that the ZOTAC card reaches those 80°C rarely, running at the highest boost clocks most of the time.
|GPU Temperature Comparison|
|ZOTAC GTX 770||42°C||80°C|
|MSI GTX 770 Gaming||34°C||79°C|
|MSI GTX 770 Lightning||37°C||71°C|
|ASUS GTX 770 DC II||29°C||76°C|
|Gigabyte GTX 770||34°C||76°C|
|Palit GTX 770 JetStream||31°C||78°C|
|NVIDIA GTX 770||35°C||80°C|
Important: GPU temperature will vary depending on clock speed, voltage settings,
cooler design, and production variances. This table just serves to provide
a list of typical temperatures for similar cards determined during TPU review.
Clock ProfilesModern graphics cards have several clock profiles that are selected to balance power draw and performance requirements.
The following table lists the clock settings for important performance scenarios and the GPU voltage that we measured. We performed the measurement on the pins of a coil or a capacitor near the GPU voltage regulator.
|GPU Voltage |
|Desktop||135 MHz||162 MHz||0.86 V|
|Multi-Monitor||135 MHz||162 MHz||0.86 V|
|Blu-ray Playback||135 MHz||162 MHz||0.86 V|
|3D Load||1045 - 1137 MHz||1753 MHz||1.100 - 1.200 V|
The card uses NVIDIA's dynamic overclocking mechanism. It will dynamically adjust clock and voltage based on render load, temperature, and other factors.
For the graph below, we recorded all GPU clock and GPU voltage combinations of our 1920x1080 resolution benchmarking suite. The plotted points are transparent, which allows them to add up to indicate more often used values. A light color means the clock / voltage combination is rarely used and a dark color means it's active a lot.