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PowerColor Go! Green Radeon HD5670 E-mail
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Written by Dan Ferguson - Edited by Olin Coles   
Thursday, 13 May 2010
Table of Contents: Page Index
PowerColor Go! Green Radeon HD5670
Go! Green AX5670 Features
AX5670 1GBD5-NS3H Specifications
Closer Look: PowerColor AX5670
HD5670 1GB GDDR5 Detailed Features
Video Card Testing Methodology
3DMark Vantage GPU Tests
Street Fighter 4 Benchmark
Resident Evil 5 Benchmark
Devil May Cry 4 Benchmark
Unigine Heaven Benchmarks
PowerColor HD5670 Temperatures
Go! Green Power Consumption
PowerColor Video Card Final Thoughts
Go! Green HD5670 Conclusion

HD5670 1GB GDDR5 Detailed Features

The passive cooling unit on the AX5670 is comprised of four heat pipes which transfer the heat from the GPU to an aluminum radiator mounted to the front side of the card.

PowerColor Go! Green Radeon HD5670 1GB GDDR5 Video Card AX5670 1GBD5-NS3H

Above the GPU, four slots are punched vertically through the radiator fins from the bottom to the top. The purpose of these slots is unclear, but it could be for styling or better cooling. The hot GPU will tend to add more heat to parts of the radiator that are in close proximity. These slots will allow greater air flow and may even cause a miniature convection loop over the GPU.

PowerColor Go! Green Radeon HD5670 1GB GDDR5 Video Card AX5670 1GBD5-NS3H

The top of the radiator is capped in plastic for design and to provide a place for a pretty logo. From this perspective additional heat sinks can be seen on the ICs on the front side of the card. These will help improve performance and reduce power consumption by lowering the normal operating temperature of the IC's.

PowerColor Go! Green Radeon HD5670 1GB GDDR5 Video Card AX5670 1GBD5-NS3H

A closeup of the actual heat sink assembly shows an aluminum block which clamps the heat pipes to a copper heat transfer block. Copper is a great choice since the thermal conductivity of copper is 1.6 times higher than aluminum. It costs more but is more effective.

PowerColor Go! Green Radeon HD5670 1GB GDDR5 Video Card AX5670 1GBD5-NS3H

One final note on the quality of construction. The PCB received for testing contained a white residue on the back of the PCB. A closeup of one small area can be seen in the image above. There are a myriad of things that can cause residue on a PCB ranging from the benign to the damaging. Typically it will result from the soldering or cleaning process. In all cases it results in a dirty board. In this case the card functioned well enough so the residue may have simply been a nuisance.



 

Comments 

 
# Power consumption and heat testingMatt 2010-05-14 12:34
I am a little sad that in the review the Powercolor NON-Go! Green 5670 card wasn't compared to its Go! Green sibling. This would have been a much more valid test to compare actual temperatures and power consumptions. Not that it doesn't seem like the Go! Green 5670 power consumption savings numbers seem a bit inflated, but it still isn't a very validating test (at least of the Go! Green 5750 it seems like the power consumption numbers do seem to be about 25% lower than an actual side-by-side tested 5750 (non-Go! Green) based on a benchmark of that card).

Final comment is on the design (owning a Go! Green 5570), fanless? Sure quieter, but a 1w silent fan could probably save 2-3w on a low power card and 5-8w on a high draw card by reducing temperatures 10-15c. My 5570 benchmarks in my case at 56c using furmark and with a 1.4w 80mm held up against it drops to 35c stable (21c drop). That has gotta be worth a few watts through better electrical efficiency running 21c cooler.
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# residueJustin 2010-08-30 07:06
My video card has the same type of residue as that card, and it quit working after two years.
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# Your CardBruceBruce 2010-08-30 12:54
What brand and model was it?
Can you tell us more about the failure mode?
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# RE: Your CardJustin 2010-08-30 13:08
My computer came with a nvidia 9800 Gt. Since about a week ago I have been unable to play a video game or use windows media center. If I ever start a video game or windows media center the program crashes and I get the error message, "nvlddmkm.sys has stopped responding and has recovered." Some times I get A blue screen message and the computer has to restart. I have reinstalled drivers and even restored my computer's software to the original factory condition. About a year ago I noticed my computer screen would get dark, as if i was wearing sunglasses. I would restart my computer and the screen would look normal again. I replaced my video card and found white layers of crusty residue.
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