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AMD's ATI Radeon HD 5870 vs. HD 4890 GPU Comparison - Power Consumption Tests

Today we have a look at the new top dawg HD 5870 model and compare it directly against the HD 4890 to find out just what kind of improvements we get.

| AMD Radeon GPU in Video Cards | Posted: Sep 25, 2009 3:22 am
Manufacturer: Game.AMD

Power Consumption Tests

 

 

Using our new PROVA Power Analyzer WM-01 or "Power Thingy" as it has become quickly known as to our readers, we are now able to find out what kind of power is being used by our test system and the associated graphics cards installed. Keep in mind; it tests the complete system (minus LCD monitor, which is plugged directly into AC wall socket).

 

There are a few important notes to remember though; while our maximum power is taken in 3DMark06 at the same exact point, we have seen in particular tests the power being drawn as much as 10% more. We test at the exact same stage every time; therefore tests should be very consistent and accurate.

 

The other thing to remember is that our test system is bare minimum - only a 7,200RPM SATA-II single hard drive is used without CD ROM or many cooling fans.

 

So while the system might draw 400 watts in our test system, placing it into your own PC with a number of other items, the draw is going to be higher.

 

TweakTown image content/2/9/2937_27.gif

 

Power draw at load is slightly up when compared to the HD 4890. When it comes to the idle, though, the HD 5870 down clocks itself to 157MHz on the core and 1200MHz QDR on the memory. This manages to result in minimum power draw when sitting idle. The majority of that 211 Watt is thanks to other components like hard drives, motherboard and CPU.

 

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