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POWER / ENERGY EFFICIENCY
In our Asus M2A-VM HDMI
review, a board using the same 690G chipset, we were able to get power consumption
down to 35W idle — which is substantially better than the HMC A3. This
is due in most part to the inefficiency of Hiper's power supply, which is
the same unit used in the previous H2 model. The Hiper power supply also
powers the IR remote system, wireless networking, the VFD, and an optical
drive and memory card reader, but these are not particularly energy intensive
devices. Our motherboard test platform uses a Seasonic 80Plus compliant
power supply with active PFC. It's the main reason that the system with
the similar Asus board drew so much less power.
Hiper would be well advised to utilize a higher quality power supply unit.
Not only would this result in energy savings, but with less power lost to
inefficiency transferred as heat, the fan speeds could be lowered to make
it a quieter system. The use of an external power brick might also work
well.
NOISE RECORDINGS IN MP3 FORMAT
We are re-using the noise recordings from the earlier HMC model,
since the sound levels are identical. Each of these recording starts with
six seconds of "silence" to let you hear the ambient sound of the
room, followed by 10 seconds of the product's noise.
HOW TO LISTEN & COMPARE
These recordings were made
with a high resolution, studio quality, digital recording system, then
converted to LAME 128kbps encoded MP3s. We've listened long and hard
to ensure there is no audible degradation from the original WAV files
to these MP3s. They represent a quick snapshot of what we heard during
the review. The microphone was one meter
away from the product.
These recordings are intended to let you hear how the reviewed item sounds
in actual use — one meter is a reasonable typical distance between
a computer or computer component and your ear. The recording contains
stretches of ambient noise that you can use to judge the relative loudness
of the subject. For best results, set your volume control so that the
ambient noise is just barely audible. Be aware that very quiet subjects
may not be audible — if we couldn't hear it from one meter, chances
are we couldn't record it either!
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