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Written by Olin Coles   
Thursday, 28 January 2010
Table of Contents: Page Index
PowerColor Radeon HD5850 PCS+ Video Card
Radeon HD 5850 Features
ATI Eyefinity Multi-Monitors
HD5850 PCS Closer Look
Video Card Testing Methodology
3DMark Vantage GPU Tests
BattleForge Performance
Crysis Warhead Tests
Devil May Cry 4 Benchmark
Far Cry 2 Benchmark
Resident Evil 5 Tests
S.T.A.L.K.E.R. Call of Pripyat
Unigine Heaven Benchmark
Radeon HD5850 PCS Temperatures
VGA Power Consumption
Radeon 5000-Series Final Thoughts
PowerColor HD5850 PCS Conclusion

VGA Power Consumption

Life is not as affordable as it used to be, and items such as gasoline, natural gas, and electricity all top the list of resources which have exploded in price over the past few years. Add to this the limit of non-renewable resources compared to current demands, and you can see that the prices are only going to get worse. Planet Earth is needs our help, and needs it badly. With forests becoming barren of vegetation and snow capped poles quickly turning brown, the technology industry has a new attitude towards suddenly becoming "green". I'll spare you the powerful marketing hype that I get from various manufacturers every day, and get right to the point: your computer hasn't been doing much to help save energy... at least up until now.

To measure isolated video card power consumption, Benchmark Reviews uses the Kill-A-Watt EZ (model P4460) power meter made by P3 International. A baseline test is taken without a video card installed inside our computer system, which is allowed to boot into Windows and rest idle at the login screen before power consumption is recorded. Once the baseline reading has been taken, the graphics card is installed and the system is again booted into Windows and left idle at the login screen. Our final loaded power consumption reading is taken with the video card running a stress test using FurMark. Below is a chart with the isolated video card power consumption (not system total) displayed in Watts for each specified test product:

Video Card Power Consumption by Benchmark Reviews

VGA Product Description

(sorted by combined total power)

Idle Power

Loaded Power

NVIDIA GeForce GTX 480 SLI Set
82 W
655 W
NVIDIA GeForce GTX 590 Reference Design
53 W
396 W
ATI Radeon HD 4870 X2 Reference Design
100 W
320 W
AMD Radeon HD 6990 Reference Design
46 W
350 W
NVIDIA GeForce GTX 295 Reference Design
74 W
302 W
ASUS GeForce GTX 480 Reference Design
39 W
315 W
ATI Radeon HD 5970 Reference Design
48 W
299 W
NVIDIA GeForce GTX 690 Reference Design
25 W
321 W
ATI Radeon HD 4850 CrossFireX Set
123 W
210 W
ATI Radeon HD 4890 Reference Design
65 W
268 W
AMD Radeon HD 7970 Reference Design
21 W
311 W
NVIDIA GeForce GTX 470 Reference Design
42 W
278 W
NVIDIA GeForce GTX 580 Reference Design
31 W
246 W
NVIDIA GeForce GTX 570 Reference Design
31 W
241 W
ATI Radeon HD 5870 Reference Design
25 W
240 W
ATI Radeon HD 6970 Reference Design
24 W
233 W
NVIDIA GeForce GTX 465 Reference Design
36 W
219 W
NVIDIA GeForce GTX 680 Reference Design
14 W
243 W
Sapphire Radeon HD 4850 X2 11139-00-40R
73 W
180 W
NVIDIA GeForce 9800 GX2 Reference Design
85 W
186 W
NVIDIA GeForce GTX 780 Reference Design
10 W
275 W
NVIDIA GeForce GTX 770 Reference Design
9 W
256 W
NVIDIA GeForce GTX 280 Reference Design
35 W
225 W
NVIDIA GeForce GTX 260 (216) Reference Design
42 W
203 W
ATI Radeon HD 4870 Reference Design
58 W
166 W
NVIDIA GeForce GTX 560 Ti Reference Design
17 W
199 W
NVIDIA GeForce GTX 460 Reference Design
18 W
167 W
AMD Radeon HD 6870 Reference Design
20 W
162 W
NVIDIA GeForce GTX 670 Reference Design
14 W
167 W
ATI Radeon HD 5850 Reference Design
24 W
157 W
NVIDIA GeForce GTX 650 Ti BOOST Reference Design
8 W
164 W
AMD Radeon HD 6850 Reference Design
20 W
139 W
NVIDIA GeForce 8800 GT Reference Design
31 W
133 W
ATI Radeon HD 4770 RV740 GDDR5 Reference Design
37 W
120 W
ATI Radeon HD 5770 Reference Design
16 W
122 W
NVIDIA GeForce GTS 450 Reference Design
22 W
115 W
NVIDIA GeForce GTX 650 Ti Reference Design
12 W
112 W
ATI Radeon HD 4670 Reference Design
9 W
70 W
* Results are accurate to within +/- 5W.

The reference ATI Radeon HD 5850 asks for only 24W of electricity at idle, and even though the PowerColor Radeon HD5850 PCS+ video card offers a factory overclock it still managed to sip only 18 watts at idle. This means that the HD5850 PCS+ video card offers more efficient energy consumption than the GeForce 8800 GT, GTX 285, and Radeon HD 4890.

I suspect that PowerCooler achieves this low idle power draw due to a very low fan speed at idle, whereas the reference design uses a blower fan that consumes more power and operates at a higher RPM.

Once 3D-applications begin to demand power from the GPU, electrical power consumption does climb as expected. Under full 3D load the reference ATI Radeon HD 5850 requires 157W, but thanks to the GPU and vRAM overclock PowerColor's Radeon HD 5850 PCS+ consumes 219W, which is incredibly close to the 204W consumed by a GeForce GTX 260 video card under load, and still better than the GeForce GTX 275 that it more directly competes with.



 

Comments 

 
# PowerColor HD5850 PCS+manikanta 2010-06-23 06:00
sir,
i haveto buy powercolor pcs+ 5850 but iam not able to understand in power consumptiion as u told ya 18Watts that equals to how many units in idle mode? pleaseee tell me.
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# bananahey 2012-02-25 13:40
google is your friend
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