Seasonic S12-500 & S12-600 Power Supplies

Power
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The PSUs themselves do not appear much different than the early samples or the S12-430 except for the dual 6-pin PCIe connectors and a few subtleties. The contents of the box are also the same.


Clockwise, from top left: S12-600, box, Dr. Cable kit, instruction booklet, mounting screws, Seasonic sticker, 4-pin Molex to 3 fan headers adapter, AC cable.


There are a few vents on two other sides

Here's where some differences show up: The S12-600 (and 500) on the left has smaller and fewer vents all around compared to the S12-430 on the right, and the output cables are positioned so that they exit on the side closest to the motherboard when installed in a typical ATX case. Most users would say this cable positioning is better for cable management.


For the record, here's the label from the S12-500. The one on the 600 is identical except for the particulars.

Feature Highlights of the Seasonic S12-430
FEATURE & BRIEF COMMENT
Complies with Intel ATX12V v2.0
Supports the latest motherboards and processors.
S2FC Smart & Silent Fan Control
If it is unchanged from the Rev. A3 Super Tornado, it is about the best fan controller we've seen in a PSU. We'll see.
Active PFC environment friendly technology
Almost every Seasonic we've looked at has had it for three years; now more common.
Universal Free Input: 100-240V As in previous Super series, can be useful.
Long-lived Aluminum Electrolytic Capacitor Not in first batches of the S12; this is part of the new & improved S12. If it means better reliablity, then great.
Forward Converter: Advanced design
Instead of a half-bridge rectifier, apparently.
Dual 12V rails for CPU and peripherals Specified by ATX12V v2.0
20+4 Pin Main Connector: Switches back and forth easily from 20 pin to 24 pin. One less bit of cable clutter, and reduced contact resistance as a 24-to-20 pin adapter is not used.
Short circuit, over voltage & over power protection Very nice.
Supports SLI / PCI Express
Dual PCIe 6-pin for high power VGA. Earlier versions had just one.
Supports Dual CPU motherboard 8-pin 12V cable
Safety / EMI Approvals: CE / TUV EN60950 / UL60950 / CSA / FCC / NEMKO Generally, the more the better.

SPECIFICATIONS: Seasonic S12-500
AC Input
100-240V ~7A 50/60 Hz
DC Output
+3.3V
+5V
+12V1
+12V2
-12V
+5VSB
Maximum Output Current
30A
30A
17A
16A
0.8A
2.0A
Maximum Combined
180W
396W
9.6W
10W
500W

SPECIFICATIONS: Seasonic S12-600
AC Input
100-240V ~7A 50/60 Hz
DC Output
+3.3V
+5V
+12V1
+12V2
-12V
+5VSB
Maximum Output Current
30A
30A
18A
18A
0.8A
2.0A
Maximum Combined
180W
432W
9.6W
10W
600W

Note that the combined maximum power rating is the only significant difference between the the 500 and 600 models. The individual rail differences are almost insignificant ? just 36W more for the 12V lines. It may be interesting to closely examine the output specs for the S12-430. Here, the 12V lines are significantly lower, but while the +3.3 and +5V individual lines are the same 30A as in the bigger models, the combined maximum for those lines is significantly lower too.

SPECIFICATIONS: Seasonic S12-430
AC Input
100-240V ~7A 50/60 Hz
DC Output
+3.3V
+5V
+12V1
+12V2
-12V
+5VSB
Maximum Output Current
30A
30A
14A
15A
0.8A
2.0A
Maximum Combined
150W
348W
9.6W
10W
430W


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