Conclusion

Spire has done a valiant effort in this power supply. The 500w of power is paramount in a system where high powered GFX cards and case mods are present. It’s a shame that there were not two PCIe connectors for SLI.

The rails themselves were very respectable, but the 12v rail gave me a little bit of concern. Either the situation will get better as the PSU ages, or much worse. I don’t think that this is a major issue however.

If your looking for a new PSU then the Spire Rocketeer SP-500w is a solid choice.