ATI Radeon HD 5450 & HD 5570 Graphics Cards

Graphics Cards
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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 power draw of discrete card later.

VGA Test Bed: Baseline Results
(no discrete graphics card installed)
System
State
System Power
AC
DC (Est.)
Idle
75W
Unknown
CPUBurn
151W
121W
Ambient temperature: 22°C

ATI Radeon HD 5450:

VGA Test Bed: ATI Radeon HD 5450 512MB
System
State
Sys. Fan Speed
SPL
@1m
GPU Temp
System Power
AC
DC
Idle
7V
12 dBA
44°C
83W
62W
CPUBurn
45°C
158W
127W
CPUBurn + ATITool
68°C
159W
128W
CPUBurn + FurMark
69°C
9V
15 dBA
68°C
158W
127W
12V
18 dBA
66°C
157W
126W
Ambient temperature: 22°C
Ambient noise level: 11 dBA

The reference heatsink cooled the graphics card very well, keeping the GPU core well below 50°C when idle and just under 70°C on load. Increasing the speed of the system fan in our airflow-starved VGA test system had only a small effect on the thermal results. It's fair to say that the large passive heatsink can keep the GPU comfortably cool in most thermally-demanding environments.

Interestingly, stressing the CPU and GPU combined only increased the power draw by 1W compared to the CPU alone. This is surprising as even ATI's integrated graphics typically generate higher power consumption in the order of 10W.

ATI Radeon HD 5570:

VGA Test Bed: ATI Radeon HD 5570 512MB
System
State
VGA Fan Speed
SPL
@1m
GPU Temp
System Power
AC
DC
Idle
15%
17 dBA
36°C
85W
63W
CPUBurn
37°C
161W
129W
CPUBurn + ATITool
24%
19~20 dBA
65°C
177W
143W
CPUBurn + FurMark
32%
20 dBA
73°C
185W
150W
Ambient temperature: 22°C
Ambient noise level: 11 dBA
System noise level: 12 dBA

The 5570 stock cooler got the job done as well, with idle and load temperatures of only 36°C and 73°C respectively. The fan ramped up fairly smoothly, but spun a little too fast for our liking. The power draw increased by only 21W when the GPU was stressed with FurMark, so the card does not require much power; it shouldn't take much to cool it adequately.



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