System Temp. Fluctuation
CPU Voltage Fluctuation
While it’s in standby mode, the voltage stays at around 1.38V, and while the CPU is running at full speed, it stays between 1.36~1.37V.
The voltage fluctuation range of CPU is majorly dominated by the voltage features of M/B.
3.3V
The highest point measured is 3.26V and during the test, it majorly fluctuates between 3.20~3.22V, making the fluctuation ratio around 1.84%.
5V
Falling at the range of 4.93~4.99V; the fluctuation ratio is around 1.20%
12V
The highest point measured is 11.92V and during the test, it majorly fluctuates between 11.19~11.43V, making the fluctuation ratio around 6.12%.
According to the test data released in 80Plus website (at 115V):
The power conversion efficiency of E7 600W is 83.01% and in 80Plus website,
it shows that the actual power converted from 720.20W is 597.86W.
During my test, the peak wattage, 811W, was converted into an effective power of 673.21W (at least 12% higher than the nominal wattage, 600W).
The fluctuation rates of Straight Power E7 600W respectively at 3.3V and 12V are both around 1.9%, making it quite a good performance.
12Vstarts to fluctuate violently after OCCT starts to run at full speed. The fluctuation rate is roughly around 6.12%.
In overloading situation, 12V fluctuated bigger.
The items here are measured by a more accurate meter.
In standby mode:
5V is measured at 5.06V, higher than the 4.99V measured by the M/B.
OCCT running at full speed:
When the voltage range is around 5.12V and OCCT is running at full speed, the voltage measured is higher than those measured in standby mode.
In standby mode:
12V is measured as 11.96V, which is a bit higher than the 11.92V measured by M/B.
OCCT running at full speed:
When the voltage is around 11.67V and OCCT is running at full speed, the voltage measured is 0.29V lower than that measured in standby mode.
Here is the status of 12V when the system is running at full loading
When the system loading is at 600~700W, the voltage displayed by Power Angle is 11.72~11.75V,
when the loading is at 700~800W, the voltage displayed is 11.70~11.72V and when the loading is above
800W, the voltage displayed is 11.67~11.70V.
Based on the data mentioned above, we could realize the 12V performance of E7 600W is still quite stable.
The performance of 5V & 12V are much better than the fluctuation result measured by OCCT along with M/B.
It’s particularly clear while the fluctuation rate of 12V in OCCT is 6.12%, the rate measured by meter is only 2.42%.
Conclusion:
Advantages
1. Artistic color box design of the new E7 version of Straight Power
2. Unique case coating and fan guard design
3. Certified by 80Plus Bronze & Active PFC
4. 100% Japanese capacitors & SilentWings FDB Fan integrated (only 17dBA)
5. 5-year guarantee provided, brand new PSU replacement for RMA within540 days, free RMA receiving/delivery for RMA within 3 years
Disadvantages
1. It would be much better if PCI-E 6 pin could be extended to 4pcs
2. The design would be much better if 12V could be changed to only 1 rail.
Efficiency ★★★★★★★★★☆
Material used ★★★★★★★★☆☆
Spec. ★★★★★★★★☆☆
Appearance ★★★★★★★★★☆
C/P Ratio ★★★★★★★★☆☆
You could still find the advantages of new E7 version in the non-CM series of Straight Power,
such as the honeycomb ventilation holes on both sides, sharp case edges removed to better protect the safety of users.
Of course, the long MTBF and low-noise level of the exclusive SilentWings FDB fan integrated also serve as great advantages
Actually, I haven’t conducted any tests for the part of the wattage higher than it’s nominal spec.
This time, I happened to have a platform capable of running at full loading (over 800W) and it allowed me a great chance to compare the difference.
When the loading was around 770W~810W,
the rpm and CFM of the fan were both increased without making obvious noise and the body temperature of the Power Supply was around 60 Celsius.
In terms of these two aspects, I think you can say the PSU is quite excellent.
In terms of voltage fluctuation, relatively, the fluctuation is much less in 3.3V and 5V.
Though the fluctuation of 12V is a bit higher, after being measured by a meter,
the fluctuation ratio is actually only 2.2%, making itself quite a great point/performance in a 600W PSU loaded a lot above 600W.
The end user price of be quiet! Straight Power E7 600W in the market is around 3,990 NTD, roughly equal to $124 USD.
E7 600W (non-CM version) is around 500NTD lower than E7 580W (CM version) launched to the market earlier.
The two models of new E7 non-CM version (500W & 600W) are capable of increasing the C/P value of E7 version.
So, if an end user is taking non-CM power supply into their consideration while making a purchase,
Straight Power E7 might be quite a good alternative since its C/P value is relatively quite high. : )
This review also post in my blog
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