Testing:
The idle condition was established by powering the base system descibed below at default speeds and voltages with no applications running for a period of at least 30 minutes. The load condition was established by loading the system up with components and fans (again as detailed below), while Folding@Home and SiSoft Sandra 2005's Burn-in Wizard ran for a period of at least 60 minutes. In addition to these stressful applications running, the loaded system was overclocked and overvolted to add more demand to the power supply. The table below details the idle and load conditions:
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Idle
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Load
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» AMD 64 3200+ Venice @ 2000MHz @ 1.404vcore
» DFI LanParty NF4 SLI-DR
» G.SKILL Extreme [2 x 512MB] TCCD @ 400MHz @ 2.6V
» Hitachi 80GB 7200rpm 8MB SATA-II
» eVGA GeForce 7800 GT CO 256MB GDDR3 PCI-E SLI
» Pioneer DVDRW IDE
» Fans: 1x120mm, 1x92mm
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» AMD 64 3200+ Venice @ 2400MHz @ 1.50vcore
» DFI LanParty NF4 SLI-DR
» G.SKILL Extreme [2 x 512MB] TCCD @ 600MHz @ 2.73V
» [3x Striped] Hitachi 80GB 7200rpm 8MB SATA-II
» eVGA GeForce 7800 GT CO 256MB GDDR3 PCI-E SLI
» Pioneer DVDRW IDE
» Fans: 2x120mm, 2x92mm
» Maxtor DiamondMax 10 300GB 7200rpm 16MB SATA-I
» TDK CDRW IDE
» D-Link Wireless G PCI card
» SB Audigy 2z
» SB Audigy 2z front panel
» NUUO front LCD panel
» 3 flash USB drives
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The graphic below compares the idle and load voltages from the
Sunbeamtech NUUO 550W unit only...
The graphic below compares the NUUO load voltages to those recorded from the OCZ Powerstream 520W while under the same test conditions...
I tested the sink t and psu t temperatures after 30min of playing F.E.A.R. For the psu t it was 34.8c and sink t was 57.7. The power supply has a built in smart protection which will put the fans on high if the heatsink exceeds 70c. Another point of protection for the power supply is a warning indicator which goes off if the heatsink exceeds 90c, or if fans run at a speed lower than 400rpm.
