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Written by Mikhail Ivanenkov
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Monday, 18 June 2007 |
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Page 3 of 3
The main test system (shown above) is comprised of the following:
- Intel Pentium 4 2.4C
- Abit IS7-E i865-PE
- 1GB (2 x 512MB) Kingston PC3200 UL HyperX
- Hercules GeForce3
- Onboard audio and LAN
- Maxtor DiamondMax 9 Plus 160GB HDD
- Creative 32X CD-ROM
- Antec Phantom 350watt PSU
Additionally, I put together a case with a few extra components that may be found in a computer enthusiast's system including lights, fans, and extra drives. Mostly this was done to increase the load on the power supply. The contents are:
- 3x SVC 80mm UV LED fans (mid-output)
- 2x iCute 80mm LED fans (low-output)
- 2x 60mm Papst fans (high-output)
- 2x 12" cathodes
- 1x Laser LED kit
- 3x hard drives - Seagate 3GB, Quantum 3GB, IBM 60GB (powered-only)
- 32x Creative CD-ROM (powered-only)
This secondary setup adds about 60 watts to the total. I tested the S12 in both idle and load states. Idle was just letting the system sit for an hour. Load was achieved by running Prime95's second Torture Test (maximum load, maximum heat output) for an hour. Averages were taken via Motherboard Monitor 5 (measurements taken every 5 seconds for an hour - a total of about 720 readouts).
Idle:
On idle the 3.3V line averaged 3.31V (less than 1% off), the 5V line averaged 5.03V (also less than 1% off), and the 12V line averaged 11.81V (about 1.6% off). There was also very little fluctuation between the lines. These are very stable rails, even if the PSU is highly inefficient. Also keep in mind that on idle the load is under 150 watts.
Load:
On load the 3.3V line averaged 3.3V (perfect), the 5V line averaged 5.04V (less than 1% off), and the 12V line averaged 11.71V (about 2.4% off). Still very stable rails, even if there was slightly more fluctuation. The load here was close to 200 watts. Logisys made a decent entry into the PSU market. The steel mesh series looks unique and has stable rails, but the power output is misleading, the efficiency leaves much to be desired, the cables are short and few, and the noise could be lowered by using a single, large fan.
Pros
- Very unique look
- Dual blue LED fans
- SATA connector
- Clever 20-24 pin adapter
- Honeycomb ventilation holes for maximum airflow
- Very stable rails
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Cons
- Passive PFC (not as environmentally friendly)
- Lower than expected efficiency, especially for a passive PFC model
- Short cables and not enough of them
- Could be a bit quieter
Logisys' mesh series of power supplies is a bit of a toss up. They're decent models and they certainly look cool, but efficiency is lacking, the power output is misleading (though in most instances it won't make a difference), and there's not enough of a feature set expected from a 500W model (particularly the lack of more, longer cables). Price will be a major deciding factor here. You can get more info here.
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Last Updated ( Monday, 18 June 2007 )
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