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Written by Bruce Normann - Edited by Olin Coles   
Tuesday, 10 March 2009
Table of Contents: Page Index
ASRock AOD790GX/128M AM2+ Motherboard
ASRock AMD 790 Features
AOD790GX/128M Specifications
Closer Look: AOD790GX/128M
AMD 790GX Detailed Features
AOD790GX/128M Component Layout
AOD790GX/128M BIOS
Motherboard Testing Methodology
3DMark06 Benchmarks
PCMark05 Benchmarks
CINEBENCH Release 10 Tests
Crysis Benchmark Results
EVEREST Benchmark Results
AOD790GX/128M Power Consumption
ASRock Final Thoughts
ASRock AOD790GX/128M Conclusion

Power Consumption

Life is not as affordable as it used to be, and items such as fuel and electrical energy top the list of resources that have exploded in price over the past few years. Add to this the limit of non-renewable resources compared to demand 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 peaks quickly turning brown, the technology industry has a new attitude towards Green.

ASRock offers its own version of power-saving design, calling it Intelligent Energy Saver. Like most power saving schemes, it reduces clock speed and voltage in tandem. They've also focused on the design of the voltage regulators and are claiming a 16% increase in efficiency. This is a smart approach, because even though the components draw less current when you feed them less voltage, the "extra" voltage has to be dissipated by the voltage regulator; the power supply is still putting out 3.3, 5, and 12 volts.

e-saver001.gif

During the test period, four different conditions were examined. For the first, the power supply was plugged in and switched on (the actual ON/OFF switch on the PSU itself). The system doesn't "turn on" at this point, but the PSU is always supplying 5VDC to pin 9 of the ATX 24 pin power connection, so that the front panel power switch can function. This is known in energy management circles as an energy "Vampire", and the U.S. Department of Energy has estimated that this class of devices and operating modes (Instant On Anything, Wall Warts, Docking Stations, and device displays) can suck up 5-10% of an average home's electricity use. Each test was repeated three times, and the averages are displayed (although each test result was identical to the previous).

The second test was to start the system without the video card installed. This gets the motherboard into Power On Self Test (POST) mode, where it stops and does not continue to boot, due to the VGA error. The integrated video capability can't be completely turned off in the BIOS, so this adds some additional load that doesn't show up on most of the motherboards we've tested here at Benchmark Reviews. This condition is really the minimum possible load for an operational system, which include a HDD, a DVD drive, keyboard, and mouse. I unplugged all the extra case fans for these tests, the only fans running were the CPU cooler fan and the GPU cooler for the third and fourth tests.

The third test is a normal boot into Windows. I looked at the power consumption at the login screen and after login, once the OS was finished loading all the programs, processes and services. It turned out to be the same power draw in this case, once the OS settled down to. The fourth test was a synthetic 100% load, created by the System Stability Test in EVEREST Ultimate Edition, with all loads enabled.

Note: all these tests were performed in the base configuration without the Intelligent Energy Saver software installed or operating.

ASRock AOD790GX/128M

Volt Amps

Watts

Amperes

Power Factor

Temperature

Vampire Mode (Never really OFF)

14VA

2W

0.11A

0.20

25C

POST Screen (No VGA Installed)

115VA

110W

0.95A

0.96

25C

Windows Boot-Up Screen (Idle)

170VA

163W

1.40A

0.98

25C

EVEREST Stability Test (100% Load)

260VA

245W

2.17A

0.99

25C

The results are somewhat higher than the Gigabyte GA-EP45-UD3P I tested in January, ranging from 15-25% higher. The results were, however, right in line with the results included in the Gigabyte GA-EP45T-EXTREME Motherboard test, published on Benchmark Reviews in August of 2008. Those results included power consumption of several popular motherboards, with a variety of chipsets:

  • ASUS P5K3 Deluxe Wi-Fi-AP (Intel P35 Express Chipset)
  • Gigabyte GA-X48T-DQ6 (Intel X48 Express Chipset)
  • ASUS Striker II NSE (nForce 790i SLI Chipset)
  • Gigabyte GA-EP45T-EXTREME (Intel P45 Express Chipset)

Results for power testing are not completely standardized across our testing platforms, because different supporting hardware (PSU, HDD, SSD, CPU Cooler, Video card, etc.) is used in many of the reviews. Nevertheless, the results for the AOD790GX/128M are very typical of what a mid-level system will require in terms of power consumption, and very consistent with results that others at Benchmark Reviews have obtained with comparable hardware.



 

Comments 

 
# 790 GX chipset MBpawan 2010-08-08 10:09
790 GX chipset with ATI radeon HD 3300 IGP is even today a very good.
Unlike the reports in this review, this mobo can handle most of the current games at decent playable frame rates with great ease. Any one has clarifications can approach me to clear his/her doubts.
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# Wrong.Olin Coles 2010-08-08 13:46
You are absolutely wrong, pawan. The ATI Radeon HD 3300 IGP will not play "most" current games "at decent playable frame rates with great ease". This mobile graphics chip is not capable of any DirectX-11 games, which is what qualifies as current these days, and it struggles with DX10 extensions. Even on the games it will play, you must turn the settings all the way down and play at reduced resolutions.

The ATI radeon HD 3300 IGP is not intended for modern 3D games, and it's best used for low-impact 3D applications.
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# Examples, PleaseBruceBruce 2010-08-08 10:34
Can you provide some benchmarks with the HD 3300 IGP and the current games you mention?
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