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Latest be quiet! Straight Power E7 600W 80+ Bronze Series Review


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E7 version of be quiet! Straight Power series is the latest version launched by BQT.

The models from earlier E7 version are 480W, 580W and 680W.

These 3 models are all cable management (CM version) power supplies and surely their prices are a bit higher because of the relatively costly CM design.


Straight Power also has its non-CM version in the market, including 500 and 600W. In terms of selling prices in the market,

their prices are surely a few hundred bucks lower than that of E7 CM version.

The focus of new E7 version launched this time is on 80+ Bronze Certification and the SilentWings FDB fan integrated.

This new series not only is compliant to Rev. 5.0 of Energy Star and the power consumption needed in standby mode is less than 0.5W.

As for its cosmetic part, the point lies in its brand new style.

The case used this time is quite different from be quiet! typical image in our mind. We’ll introduce more of the case in the following section.


Here is our star, Straight Power E7 600W.

The color box design of E7 version, with less different color combinations, looks more elegant.




Multi-Language User Manual, Cable Ties, Screws, Power Cord.



Straight Power E7 600W Dimensions: 160mm X 150mm X 86mm

The coating is “finger-print resistant”, leaving the case a neat touch.



The titanium gray coating used this time makes this E7 version quite different from the black case we normally see in be quiet! power supply cases.



The honeycomb ventilation holes in the back side, commonly seen design.

Active PFC, 110~240Vac




The symmetric fan guard is in Jazz-Black. Just like what I’ve said before, it looks really like BBQ grill. However, it still looks quite stylish.

12cm FDB Fan: MTBF/300K hrs, 17dBA



The model name of Straight Power E7 600W is "BQT E7-600W"

+12V*4 (45A in total), reaching 540W at most.



3 rows of honeycomb ventilation holes right beside cables, quite helpful in enhancing the heat ventilation mechanism.



Output Cables

1 X 20+4 Pin ATX

1 X 12V P8

1 X 12V P4

1 X 6 Pin VGA

2 X 6+2 Pin VGA







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M/B: ASROCK X58 Extreme3, which is the most advanced PC platform among Intel platforms.



Featuring true 333 function, which allows USB 3.0, SATA 3.0 & E-SATA3 to operate at full speed (X16).



Test Platform

CPU: Intel Core i7-930

MB: ASROCK X58 Extreme3




POWER: be quiet! Straight Power E7 600W

Cooler: Mega Shadow Deluxe Edition

OS: Windows7 Ultimate 64bit



OS Default Values:

CPU 200 X 21 => 4200MHz

DARM DDR3 1600 CL6 6-6-18 1T



OCCT V3.1.0




What listed above is the spec of the platform used in the performance review.

In order to demonstrate the power consumption happens during the test, the consumption will be measured by “Power Angle”.


In OS Desktop window - 222~223W



APFC: PF - 0.97~0.98



Running the Power Supply test items in OCCT

i7-930 OC 4.2GHz, real 4-core along with 4-core HT full-loading simulation and GTX260 SLI 2WAY - 770~811W。



APFC: PF - 0.99



The data obtained through Power Angle is only for reference due to its lack of extreme accuracy.

GTX 260 SLI is used for the review in order to reach the utmost 3D efficiency.

Also, while at full loading, the CPU could reach power consumption as high as up to 811W;

though it was only charged by 110V, still it has reached a level much higher than 600W loading.


OCCT Test Result

CPU Temp. Fluctuation


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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.




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%.




Falling at the range of 4.93~4.99V; the fluctuation ratio is around 1.20%




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%.




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



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 WIND'S 3C

Welcome 3C lovers to visit and advise.

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You can get a much better PSU for the $$$. Case and point nvidia spec the 260@182 watts max draw or 364 watts total for both.


Yet at idle your down to 11.96. Thats only 65% load. I'm surprised it didn't crash. Usually at 11.7 they bsod. Everyone I know that has bought be quite. Throws it in the trash. Bequite is made by the same company as tagan. Your 12volt should never drop below 12 when it not even under a load. No disrespect to the reviewer. IMHO be quite=pos.

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