HIS Radeon HD 4890 Turbo Edition

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TEST RESULTS

BASELINE, with Integrated Graphics: First, here are the results of our baseline results of the system with just its integrated graphics, without a discrete video card. We'll also need the power consumption reading during CPUBurn to estimate the actual power draw of discrete card later.

VGA Test Bed: Baseline Results
(no discrete graphics card installed)
System
State
System Power
AC
DC (Est.)
Idle
73W
Unknown
CPUBurn
144W
115W
Ambient temperature: 21°C
Ambient noise level: 11 dBA
System noise level: 12 dBA

ATI Radeon HD 4870 1GB:

VGA Test Bed: HIS Radeon HD 4890 Turbo Edition
System State
Fan Speed
SPL
@1m
GPU
Temp
Mem. Temp
Shader Temp
System Power
AC
DC (Est.)
Idle
1400 RPM
15 dBA
60°C
71°C
63°C
139W
111W
CPUBurn
61°C
71°C
65°C
227W
186W
CPUBurn + ATITool
2100 RPM
25 dBA
71°C
81°C
75°C
292W
239W
CPUBurn + FurMark
2340 RPM
26 dBA
75°C
85°C
79°C
324W
264W
Ambient temperature: 21°C.
Temperatures recorded via GPU-Z.

During testing, temperatures stayed well within reasonable levels — at full load, the GPU core temperature measured only 75°C. The relatively low temperatures were the result of the card's cooling fan being more aggressive than we are used to seeing. It sped up early and often once a load was applied to the GPU. Idle, the fan spun at approximately 1400 RPM and measured 15 dBA. It was audible, but soft sounding, like an optical drive spinning at a low speed. When the fan speed stabilized on load, it was much louder. It measured 26 dBA and had a lot more hiss due to higher air turbulence (though much of it was blocked out by our case side panel), as well as a nasty growl.

VGA Test Bed: HD 4890 vs. HD 4870
System State
HIS Radeon 4890 Turbo 1GB
ATI Radeon 4870 1GB
Fan Speed
SPL
@1m
GPU
Temp
Fan Speed
SPL
@1m
GPU
Temp
Idle
1400 RPM
15 dBA
60°C
990
RPM
13 dBA
76°C
CPUBurn
61°C
78°C
CPUBurn + ATITool
2100 RPM
25 dBA
71°C
1750 RPM
20 dBA
83°C
CPUBurn + FurMark
2340 RPM
26 dBA
75°C
1750 RPM
20 dBA
85°C
Ambient temperature: 21°C.
Temperatures recorded via GPU-Z.

Compared to our reference HD 4870 sample, it is clear the HD 4890's fan control is much more active, resulting in higher noise levels, but lower temperatures. The reference 4870 could conceivably find a place in a quiet PC since it is barely audible when idle. The same cannot be said of the reference 4890.



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