Testing the Silencer 750EPS12V T
esting the Silencer 750 involved our usual methodology including taxing the processor at 100% simulated LOAD with S&M 1.8.1.
while measuring Rail voltage with a Extech MN26 Minitech
. Probes were applied to the reverse side of the ATX and CPU connectors as well as other leads for "live" readings. To measure temps the Extech MN26 Minitech
thermocouple probe in addition to the TTGI SF-609 Rheostat
external thermistors (calibrated with the Extech). Temps were measured at the PSU, inside the case and externally to record ambient (room) temp. Noise levels were recorded using a Smart Sensor AR-824
SPL meter at a distance of 1m.
1. Intel / 2. AM2 Test Systems:
|CPUs ||1. Intel Conroe 6400 Retail Socket-775|
2. AM2 3800X2 Retail
|Mainboards ||1. Asus P5W DH (BIOS 1407)|
2. Asus M2N32-SLI Deluxe (BIOS 0706)
|Memory ||1. Crucial Ballistix PC2-8000 (2028MB)|
2. Super Talent PC2-8000 (2x2048MB)
|Graphics ||1. AOpen Aeolus 7800GTX-DVD256|
2. Leadtek PX7950GX2 TDH (2x) QUAD-SLI
|Power Supply ||1. PCPower&Cooling Silencer 750EPS12V|
2. Silverstone Zeus ST85ZF (alternated)
|Cooling ||1. Swiftech Apex Ultra|
2. Danger Den NVIDIA kit 4101
|Storage ||1. Maxtor 300GB SATA|
2. 2x Seagate Barracuda 80GB SATA Perpendicular
|Optical ||1. Plextor PX755-SA DVD/RW|
2. NEC DVD/RW
|Operating System ||Windows XP Home SP2+|
As stated above we measure noise levels from a distance of 1m using the Smart Sensor AR-824 SPL meter. The Silencer 750EPS12V is one quiet PSU and practically inaudible mated with NZXT's ZERO case which has to be the most silent case I've ever used, especially given it's seven 120mm fan compliment. Except for running the system with two 7950GX2's in SLI (QUAD) and at 300FSB running the A64 3800X2 under load the Silencer earned it's namsake. Most readings hovered around 36dB(A) which is just above my romm's ambient noise level (most quiet, windows closed all electrical devices such as TV, AC or room fans off).E6400 @ 2.13GHz IDLE = 36dB(A)
E6400 @ 2.13GHz LOAD = 36dB(A)
E6400 @ 3.2GHz IDLE = 36dB(A)
E6400 @ 3.2GHz LOAD = 38dB(A)
A64 3800X2 @ 2.0GHz IDLE = 41dB(A)
A64 3800X2 @ 2.0GHz LOAD = 42dB(A)
A64 3800X2 @ 3.0GHz IDLE = 42dB(A)
A64 3800X2 @ 3.0GHz LOAD = 43dB(A)
The Extech digital multimeter probes were inserted into the reverse end of the 24-pin, 4-pin baseboard (CPU) which allows for accurate testing at LOAD. To reiterate, the AMD component of the voltage testing on the 750EPS12V saw two Leadtek PX7950GX2 TDH running in what amounts to QUAD SLI. The power supply only has two connectors therefore I wouldn't recommend this unit for "true" QUAD SLI setup where four individual cards are used. In the chart below total wattage is included next to processor specs.
PC Power & Cooling has redesigned their Silencer series offering a wide range (310W ATX ~ 750W EPS) of high current, low noise, affordable PSU's for all types of PC-Users. Eschewing multi-Rail for a single rail design eliminates overloaded rails, which also eliminates the need for ad-hoc fixes. A single-Rail distributes current where and when it's needed, all one need do is determine which model (wattage) will fit their needs and who better to aid them in this decision than PCPower&Cooling.
Single 12V Rail design at 60A
Exceptional build quality
Finish, would prefer polished "copper like" metal
At the time of writing the Silencer 750EPS12V can be found for 200USD through Froogle approx.
I would like to thank PC Power & Cooling for supplying a tests sample off the shelf. Please look for our test of the Turbo-Cool 1KW-SR, a complete revolution in Single Rail technology capable of running multiple Geforce 8800GTX cards, and Quad core CPU's.
Questions/Comments: forum thread