High Power Astro GD 750 W Review 4

High Power Astro GD 750 W Review

(4 User Comments) »

Value and Conclusion

  • The High Power Astro GD 750 W retails for $139.99.
  • Delivered full power at 46°C
  • Highly efficient (especially at very low loads)
  • Tight voltage regulation
  • Long hold-up time
  • Silent operation
  • Semi-fanless operation
  • Lots of connectors
  • Bundled power meter (installed in an inconvenient place)
  • 5 year warranty
  • Expensive
  • Expected better ripple suppression
  • Not-so-good performance in Advanced Transient Response tests
  • High inrush current
  • The natives cables could be less and more flexible
Digital control is in the future of PSUs because it allows them to achieve extra high efficiency, excellent voltage regulation, and great ripple suppression. This unit mostly uses analog circuits, but still manages to perform exceptionally well in two of the above areas, proving that analog designs still have some life in them. That said, its ripple suppression unfortunately wasn't that good, especially on the minor rails. The AGD-750 apparently uses a hybridized digital control system that only interacts with the DC-DC converters generating the minor rails, which is contrary to the "more" digital Corsair AXi and EVGA SuperNOVA 1500 W units. The efficiency levels this PSU registered were still simply outstanding, being more efficient than anything I have ever tested at lower loads (below 100 W). Efficiency also matches that of a Platinum unit at normal loads, and I think the unit I had in my hands could easily meet 80 Plus Platinum requirements. The semi-fan-less operation and the bundled power meter, although located on the PSU, which makes it hard to read, also complement the unit's set of features well.

Though there are problems. The most crucial is the high price. It can be attributed to the type of digital control the PSU utilizes as it apparently isn't cheap to implement. Nor was ripple suppression as expected in such a cutting-edge design, and performance to transient response tests could further be improved upon with some tuning. I do wonder about High Power's choice to make the second EPS cable native since only a small portion of users will utilize it; the single, native PCIe connector may also look a little odd to some, but many users do have VGAs that only require one connector.

The time has came for the last paragraph of this review to shine, and here, I traditionally sum up the reasons to buy or not to buy the product I have just evaluated. The Astro GD 750 W is the ideal PSU for a modern mid-level system with up to two VGAs, where efficiency, stability, and low noise output matter the most. I also feel that a price drop of around $20 would significantly boost the Astro GD 750 W's competitiveness.
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