Introduction and Features
The SP-500W Rocketeer V power supply sports a Titanium-look finish, two blue LED fans and sleeved cables that should appeal to enthusiasts looking for a PSU with solid rails and great looks.
The Spire SP-500W Rocketeer V power supply is rated for 500 watts nominal load and features two blue LED cooling fans, a mirror finish Titanium-look chassis and modular cables. Note: the SP-500W model we have for review has just been replaced with the SP-500W SLI Series, which now includes a second PCI-Express cable (the SP-500W only has one).
Spire is a well known and respected name in the CPU cooler industry, especially in
(click to enlarge)
SpirePower SP-500W Rocketeer V
Â· 500W combined power output (550W maximum)
Â· Intel BTX 1.0a & ATX 2.03 compliant
Â· Modular EZ-Cable power connectors (peripheral devices)
Â· Dual PCI-E 6-pin connectors (SP-500W SLI Series)
Â· Two blue LED dual ball bearing cooling fans
Â· Variable fan speed auto-control with manual override
Â· Titanium-look mirror finish
Â· 3-Year warranty
The Spire SP-500W power supply was evaluated on both features and performance. A full range of equipment was used to test the power supply under controlled load conditions. In addition to measuring the power going in and coming out I looked at voltage regulation, electrical noise (AC ripple), sound level, efficiency and cost. Here is a list of the equipment used during testing.
Â· FLUKE 87-III True RMS digital multimeter (Accuracy +/- 0.05%)
Â· WattsUp? Pro — digital wattmeter (Accuracy 3% of full scale)
Â· Powerstat Variable Autotransformer, 1.4 KVA, 0-140 VAC
Â· FLUKE 52-II digital thermometer (Accuracy +/- 0.3ÂºC/0.5ÂºF)
Â· Extech Model 407736 digital sound level meter (Accuracy +/- 1.5 dB)
Â· AccuLab V1-10kg digital balance (Accuracy +/- 1g)
Â· Homemade PSU load tester — selectable load (up to 470W)
Â· Seasonic PSU load tester (up to 137W)
Establishing a controlled load is critical to testing and evaluating a PC power supply. I built my own power supply load tester using 13 wire-wound, ceramic resistors of various sizes. This unit can place up to a 470 watt combined load onto the power supply being tested and includes independent +12V1 and +12V2 sections. Different combinations of resistors can be switched in or out to select various loads. In addition to my own load tester, I also used a load tester manufactured by Seasonic (75W and 137W loads).