Silver Power GuardianX 1000w SP-1000E ATX PSU
Published: 16th May 2007 | Source: Silver Power | Price: |
To provide our readers with the most accurate results, Overclock3D uses a custom built PSU load tester on all reviews. This not only gives much more reliable results than the testing methods employed by other sites, but also allows for all current and future review results to be compared side-by-side.
Efficiency tests are performed by measuring the wattage consumed by the power supply at the mains (Mains Draw) against the power consumed by the OC3D power supply stress tester (PSU Load). These results may not be 100% accurate, but have proven to be extremely close to results obtained from professional equipment.
| +3.3v Rail||0w||66w||99w|
| +5.0v Rail||0w||50w|| 100w|
| +12v Rails||0w||360w||720w|
Certainly not bad results for a budget unit placed under a hefty 919w load, and well within ATX specifications throughout.
In our continuing efforts to make power supply reviews more thorough, rather than simply checking voltage stability, Overclock3D will now be recording the temperature of each PSU as it undergoes testing. Temperature recordings are taken from the inside of the PSU at 0%, 50% and 100% load levels using a laser infrared thermometer. These readings should give us a good idea how much heat is likely to radiate into the end-users case.
Noise Level Recordings
Possibly the hardest part of any PSU review is summarising the level of noise given out by the unit. The threshold for what is considered 'noisy' varies from person to person and therefore what I may consider a quiet unit, another person may consider extremely loud. A common way to resolve this issue is to use a dBA meter to measure the units noise level, however this doesn't take into account the pitch (type) of noise emitted and whether it is likely to irritate end users.
For this reason OC3D records all power supplies at idle and load in wav format for you to make your own informed decisions. All recordings are taken at 30cm away from the PSU and outside of a PC case. You will need to remember that noise levels will be reduced by varying amounts once the PSU has been installed inside your PC enclosure.
0% Load Recording - Download
50% Load Recording - Download
100% Load Recording - Download
Under full load I found the GuardianX to be surprisingly silent. Normally high-output units fitted with 80mm fans are extremely loud as the fan needs to rotate at full speed in order to combat the increasing temperature. Although maybe not ideal for HTPC or SilentPC users, the SP-1000E certainly won't stand out in the average PC.