Antec VPF Series 650W PSU Review

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Antec's VPF650 is a budget PSU made by Delta Electronics to achieve high-performance-per-dollar. In the US, the VPF units are sold under the EarthWatts Green series.

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Ripple Measurements

To learn how we measure ripple, please click here.

The following table includes the ripple levels we measured on the rails of the VPF650 unit. The limits, according to the ATX specification, are 120mV (+12V) and 50mV (5V, 3.3V and 5VSB).

Swipe to scroll horizontally
Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 11.4mV 13.2mV 14.7mV 9.6mV Pass
20% Load 16.8mV 14.2mV 16.6mV 10. mV Pass
30% Load 18.6mV 14.9mV 17.0mV 11.0mV Pass
40% Load 21.3mV 15.6mV 17.2mV 11.7mV Pass
50% Load 23.4mV 15.9mV 19.2mV 12.7mV Pass
60% Load 26.4mV 16.2mV 21.7mV 15.4mV Pass
70% Load 27.5mV 17.6mV 22.2mV 16.2mV Pass
80% Load 29.2mV 18.9mV 26.2mV 16.5mV Pass
90% Load 29.6mV 19.8mV 27.1mV 17.3mV Pass
100% Load 30.5mV 22.5mV 29.7mV 17.8mV Pass
110% Load 33.0mV 24.6mV 31.4mV 20.7mV Pass
Cross-Load 1 20.8mV 16.6mV 18.4mV 9.8mV Pass
Cross-Load 2 32.7mV 23.3mV 28.9mV 16.3mV Pass

Delta's designs suppress ripple efficiently and the VPF650 clearly isn't an exception to this. Although we have seen Delta PSUs with one-digit ripple readings on most rails, we should point out that these were high-end platforms costing way more. For the budget category, the ripple suppression that the VPF650 achieves is about as good as you'll get.

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Ripple Oscilloscope Screenshots

The following oscilloscope screenshots illustrate the AC ripple and noise registered on the main rails (+12V, 5V, 3.3V and 5VSB). The bigger the fluctuations on the screen, the bigger the ripple/noise. We set 0.01V/Div (each vertical division/box equals 0.01V) as the standard for all measurements.

Ripple At Full Load

Ripple At 110-Percent Load

Ripple At Cross-Load 1

Ripple At Cross-Load 2

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Aris Mpitziopoulos
Aris Mpitziopoulos
Contributing Editor

Aris Mpitziopoulos is a contributing editor at Tom's Hardware, covering PSUs.

6 Comments Comment from the forums
  • iam2thecrowe
    I do like Antec PSU's, their range is very solid. Good write up. Good value PSU.
    Reply
  • CTurbo
    I hope Delta is not going to get out of the consumer psu business completely. They've been one of my go-to oems for years. Top notch reliability.
    Reply
  • Onus
    Antec has been one of my go-to standards for years as well. Though it has been surpassed in efficiency, I may need to put my SG-650 in my will because of its anticipated durability.
    Reply
  • 2Be_or_Not2Be
    When the author says "... Delta no longer has an interest in this market..." - what market is he talking about? I seem to recall that quite a few of my Dell servers had Delta OEM PSUs, and I think a number of Dell desktops had custom Delta PSUs as well. So is it only the consumer market that they don't want to supply anymore?
    Reply
  • iam2thecrowe
    16537381 said:
    When the author says "... Delta no longer has an interest in this market..." - what market is he talking about? I seem to recall that quite a few of my Dell servers had Delta OEM PSUs, and I think a number of Dell desktops had custom Delta PSUs as well. So is it only the consumer market that they don't want to supply anymore?

    probably. There is now too much competition in the consumer psu market for it to be really profitable for some companies. It would make sense if a company only wanted to do anything other than generic PC ATX psu's, because they can charge a lot more for it.
    Reply
  • Aris_Mp
    Yeap Delta is away from consumer market. They mostly make OEM PSUs now. As far as I know only Antec has a contract with them for desktop PSUs.
    Reply