Etasis EFN-300 & AOpen A0300-12AHNF
Etasis EFN-300
Retail Name (if known) N/A Rated Output Power 285W Specification ATX Power Switch Yes Input Voltage 110-220V, 50-60Hz Fan(s) Removable 80mm exhaust Cable runs 20-pin ATX
P4
SATA
SATA
2 x 4-pin Molex
2 x 4-pin Molex, 1 floppy
2 x 4-pin Molex, 1 floppyMax currents +3.3V = 23A
+12V = 18A
+5V = 25ACombined power for +3.3V and +5V 180W Passed certification checks No
Another older ATX PSU with only a single +12V rail, the Etasis passed the tests without any issue. The literature openly states the 300 in the product name is a peak power output with 285W being the sustained output power. Voltage rails were solid throughout, expect from when you power on the PSU from cold when regulation is fairly poor. Six 4-pin Molex connectors is a nice count for a low output supply. It didn't get too hot and efficiency was comparatively very high, however its removable fan was very noisy. That's hopefully a sample-specific issue.
Recommended system: Low-end to mid-range P4 and AMD Athlon Socket A
AOpen A0300-12AHNF
Retail Name (if known) AOpen XPower 300W Rated Output Power 300W Specification ATX 2.0 Power Switch Yes Input Voltage 220-240V, 50Hz Fan(s) Single 120mm exhaust Cable runs 24-pin EATX
P4
half AT
2 x 4-pin Molex, 1 SATA
1 4-pin Molex, 1 SATA, 1 floppy
2 x 4-pin Molex, 1 floppyMax currents +3.3V = 20A
+12V = 14A + 8A
+5V = 20ACombined power for +3.3V and +5V 120W Passed certification checks Yes (CB, Taiwan, passing IEC 60950. CE, Taiwan, passing EMC Directive)
The AOpen XPower 300W is a low-cost 300W ATX supply designed to be paired with low-end to mid-range P4, Socket A AMD and Socket 754 and 939 Athlon 64 and Sempron. There's a 24-to-20 pin coverter in the box, unfitted, along with a 4-pin Molex-to-SATA converter to give a total of three SATA connectors. Two +12V rails are available, meeting the ATX 2.0 spec. +12V was measured high on both rails under heavy load and efficiency was average. The 120mm meant it was fairly cool and quiet. It passed all output load tests without any problems.
Recommended system: Low-end to mid-range P4, AMD Athlon Socket A and AMD Athlon 64 and Sempron on Socket 754 and Socket 939.