Sapphire Radeon RX 7900 GRE Pulse Review 97

Sapphire Radeon RX 7900 GRE Pulse Review

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W1zzard
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Manufacturer: Sapphire
Cooler Performance Comparison »

Temperatures

Temperature & Noise Comparison
IdleGaming
GPUNoiseGPUHotspotNoiseRPMPower
ASRock RX 7900 GRE Steel Legend32°CFan Stop59°C82°C31.1 dBA1546 RPM290 W
Sapphire RX 7900 GRE Nitro+32°CFan Stop68°C83°C27.2 dBA1004 RPM296 W
Sapphire RX 7900 GRE Nitro+ (Quiet BIOS)32°CFan Stop70°C81°C24.9 dBA1006 RPM255 W
Sapphire RX 7900 GRE Pulse35°CFan Stop70°C85°C26.1 dBA1050 RPM265 W
Sapphire RX 7900 GRE Pure35°CFan Stop66°C82°C28.2 dBA1203 RPM271 W

Testing notes & interpretation
  • GPU temperatures listed here are based on GPU-Z measurements of the on-chip temperature sensor.
  • We report these GPU temperatures under a constant load for ease of comparison, as well as an idle state most end users will experience often. This combination helps dictate cooling needs and provides context for how well the thermal solution performs.
  • Please note that GPU temperature is contingent on a variety of factors. Some, including clock speed, voltage settings, cooler design, and production variances, are beyond the control of the end user. Others, such as ambient temperature, case design, and airflow pathway affecting the GPU, can be mitigated to certain extents.
  • The data in the table above shows results for similar cards, achieved in identical conditions during previous TechPowerUp reviews.

Thermal Analysis

For this test, we first let the card sit idle to reach thermal equilibrium. Next, we start a constant 100% gaming load, recording several important parameters while the test is running. This shows you the thermal behavior of the card and how the fans ramp up as temperatures increase. Once temperatures are stable (no increase for two minutes), we stop the load and record how the card cools down over time.

GPU Clock, Voltage Temperature, Fan Speed over Time


Fan Noise

Noise Testing Details
  • The tested graphics card is installed in an open bench system. The system does not emit any noise on its own, all components are passively cooled.
  • All cards are loaded with the same test: a custom-engineered game-like load in Unreal Engine 4 that always renders the same frame at 60 FPS to minimize variance.
  • To ensure 100% loading of the GPU, the render complexity is set dynamically so that each card operates at peak performance without being CPU limited.
  • We're not using Furmark because it creates too high a load that forces fans to run faster than what is encountered during typical gameplay.
  • Noise results of other cards on this page are measurements of the respective reference design.
  • We let the card heat up and wait for fan speed to no longer change. Depending on the fan-control algorithm, this can often take quite some time.
  • Noise level measurements are conducted using a 1/2" calibrated measurement microphone that records onto the host PC using a digital audio processing pipeline. The microphone is recalibrated at least once a month.
  • Measurement distance is 50 cm. Our previous noise-level measurements took place at a distance of 1 m. We reduced the distance to be able to better distinguish acoustics of the very quiet graphics cards.

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Nov 12th, 2024 15:41 EST change timezone

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