| Ultra Products X-Connect 2 550W PSU
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Testing:
The idle and load voltages of the Ultra Products X-Connect 2 550W power supply were tested using a Craftsman Auto-Ranging Multimeter (Model 82139).
The idle condition was established by powering the base system 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, 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 Opteron 148 CPU @ 2200MHz
DFI Lanparty UT NF4 SLI-DR Expert
1GB Corsair TwinX1024-4000PRO DDR
2x 80GB Hitachi Deskstar SATA II hard drives
1x 120GB Seagate 7200.9 SATA 3Gbps hard drive
Memorex DVD/CDRW
10-n-1 Media Card reader
eVGA 7800GT PCIe card
Fans: 2x120mm LED
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AMD Opteron 148 CPU @ 2750MHz
DFI Lanparty UT NF4 SLI-DR Expert
1GB Corsair TwinX1024-4000PRO DDR
2x 80GB Hitachi Deskstar SATA-II hard drives
2x 120GB Seagate 7200.9 SATA 3Gbps hard drives
Memorex DVD/CDRW
10-n-1 Media Card reader
eVGA 7800GT PCIe card
Fans: 4x120mm LED, 6x80mm
Cooler Master CoolDrive IV
1x 40GB Seagate 7200.8 SATA hard drives
1x ATI PCI TV tuner
2x USB thumb drives
USB 2.0 Hub
1x USB 2.5 hard drive
Sony DRU-500A DVD-RW
NEC DVD-RW
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Here you can see both the idle and load voltages from the X-Connect 2 PSU. There was a slight drop in voltages from the idle to load readings, but nothing that would cause concern. The voltages did not fluctuate from these readings in the six readings I took.
The next chart compares the load voltage readings of four power supplies. All of the values are well within an acceptable range of +/- 5% of specification, and absolutely zero power issues were experienced during testing.
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