Final Thoughts and Conclusions
The SilverStone Element ST70EF 700W PSU delivered excellent voltage regulation with very good efficiency. The ST70EF is quiet, runs cool during normal operation, and includes a good compliment of fixed cables/connectors.  The only weakness we found was relatively high levels of AC ripple on the DC outputs when the PSU was subjected to extreme loads.

The SilverStone ST70EF PSU is currently available and typically sells for around $189.99 USD.  This is definitely on the expensive side when you compare it to similar high-quality PSUs (like the OCZ 700W PSU at $129 we reviewed a couple weeks ago).

SilverStone ST70EF 700W Power Supply Review - Cases and Cooling  1

•    700W continuous DC output (up to 40°)
•    Outstanding voltage regulation
•    Very good efficiency across a broad range of loads (80-Plus Silver certified)
•    Quiet at all but the highest power levels
•    Multiple +12V outputs can deliver up to 56A
•    Four PCI-E connectors support high-end graphic adapters
•    Active PFC with universal AC input

•    Relatively high levels of AC ripple on +12V outputs
•    Expensive compared to the competition
•    No modular peripheral cables

I would like to thank our friends at SilverStone for sending us the Element ST70EF 700W PSU to review.  Be sure to use our price checking engine to find the best price on any of SilverStone’s great products or anything else you may want to buy! 

And if you have any questions or comments about the article, or would like to see what others have to say about the ST70EF 700W PSU, just click into our Case, Cooling and Power Supply forum to join in the discussion!

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