Voltage Regulation

+3.3V regulation
Load Voltage
10% +1.21%
20% +1.00%
50% +0.72%
80% +0.43%
100% -0.30%
110% -0.38%

 

+5V regulation
Load Voltage
10% +1.20%
20% +1.16%
50% +0.85%
80% +0.60%
100% +0.29%
110% -0.40%

 

+12V regulation (worst rail)
Load Voltage
10% +0.75 %
20% +0.64 %
50% +0.40 %
80% +0.27 %
100% +0.11 %
110% -0.08 %

All the rails fall clearly within ATX specifications. They start slightly over the target voltage and end with results close to 0%. Since this PSU has two 12V outputs, we selected the worst rail for the tables (which is our standard procedure). +12V shows the best regulation, and will have no trouble with higher voltages. -0.08% at overload is one of the best results we have seen.

Ripple and Noise

+3.3V ripple quality
Load Ripple and Noise
10% 13mV
20% 14mV
50% 18mV
80% 22mV
100% 23mV
110% 25mV

 

+5V ripple quality
Load Ripple and Noise
10% 9mV
20% 11mV
50% 16mV
80% 18mV
100% 19mV
110% 21mV

 

+12V ripple quality (worst rail)
Load Ripple and Noise
10% 8mV
20% 12mV
50% 14mV
80% 26mV
100% 28mV
110% 33mV

Both smaller rails have less than 30mV ripple and noise, making this PSU is as good as the Antec HCG if not better. +12V has higher absolute ripple, but it's actually closer to spec as a percentage. All of the rails are far away from the limit. The TX750 V2 can't beat the Corsair AX 750W, so we now know why there is such a high price difference. Of course 80 Plus Gold is another reason to buy an AX-series PSU.

Internal Design and Components Noise, Efficiency, and PFC
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32 Comments

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  • mfenn - Monday, May 16, 2011 - link

    The review really seems to jump into things with no intro. Reply
  • JarredWalton - Monday, May 16, 2011 - link

    I thought I had copied over Martin's text from the front page summary, but I apparently didn't. It's not on the first page. Reply
  • quiksilvr - Tuesday, May 17, 2011 - link

    I hate to be a grammar Nazi but please change the title. How can something be new AND improved. It's either an entirely new product or an improved or upgraded version of its predecessor. Reply
  • JCheng - Tuesday, May 17, 2011 - link

    It's a newly released iteration that improves upon the previous iteration. Reply
  • Etern205 - Wednesday, May 18, 2011 - link

    It's "new" as it just came out and "improved" since this is marked as version 2.
    Stop nitpicking.
    Reply
  • veri745 - Wednesday, May 18, 2011 - link

    And stop ripping off George Carlin... Reply
  • quiksilvr - Wednesday, May 18, 2011 - link

    So if a comedian points out an oxymoron it's called ripping off? I'll keep that in mind. Reply
  • ekstor - Thursday, May 19, 2011 - link

    Technically, you're not actually pointing out a grammar issue. Reply
  • Mathieu Bourgie - Monday, May 16, 2011 - link

    I quickly read the article, but I didn't see any mention of how well the TX750 V2 does compared to the its predecessor, the TX750?

    What are the pros/cons of going with the V2 compared to the original?

    Otherwise, great review, thanks!
    Reply
  • ymetushe - Monday, May 16, 2011 - link

    Same here. I was really looking for some comparison to the TX750 "V1", the original one. Reply

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