While in standby mode, 12 was around 12.13V, a bit lower than 12.43V measured by M/B.
While OCCT was operating at full speed,
12V was around 11.92~11.93V; 0,20V lower than it was in standby mode.
With the application of the multimeter, the voltage fluctuation of 5V at full speed was only 0.02V and 12V was only 0.20V.
Both of these two values were much better than those measured by M/B in OCCT operation.
Though the fluctuation rate of 12V in OCCT operation was 3.6%, it was actually only 1.60% measured by multimeter, apparently a lot better.
1, the color box of Straight Power E7’s latest version is a lot more attractive
2, special case coating and fan guard design
3, 80Plus Bronze certified; equipped with APFC circuit
4, all capacitors are Japanese, and noise level is only 17dBA
5, 5-year warranty, free to exchange for a new one within 540days if malfunction happens, and free NG PSU collection and delivery within 3 years.
1, the fluctuation range of 12V still leaves room for improvement
2, it would be better if 12V is changed into single rail
Upon my first glance at Straight Power E7, I could tell it was quite a special product.
Its appearance and fan design both greatly differentiate it from other ordinary looking power supplies.
Also, in other points you could also see how hard be quiet! has tried to differentiate it from other PSU,
such as the external fan connectors that allows more silence for the system, honeycomb ventilation holes on both sides of the case, scratch-proof case,
and the rounding of case sharp corners that could prevent users from being hurt, etc.
During the system test, E7 CM 680W was very quiet in both standby and full-speed modes; hardly could you hear any noise.
The temperature measured from its surface was around 45~50℃.
The stability of 3.3V & 5V is relatively higher than that of 12V.
Though after voltage fluctuation of 12V was more accurately measured by a multimeter,
the fluctuation rate was proved 50% less than that measured by M/B, still there is room for improvement of 12V’s stability.
The market price range of be quiet! Straight Power E7 680W is around 5990NTD, roughly equal to 186USD,
making it neither an expensive nor an inexpensive PSU on the market.
Though the quality is good and the materials used are of high quality, personally, I think if the price could be lowered a bit, it would be even better.
At least, a lowered price would allow end users who are interested in this product more possibility to purchase this product. : )