Seasonic SS-350TGM 80 Plus Gold TFX

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FEATURES & SPECIFICATIONS

Unlike retail package models, the marketingspeak (see Orwell's "newspeak"in 1984) for the SS-350TGM is limited to a single web page, and fairly low key.

SEASONIC SS-350TGM FEATURE HIGHLIGHTS (from the product web page)
FEATURE & BRIEF	Our comment
Compliance with TFX12V v2.31	Differences between this latest and earlier TFX12V specs are not clear because the spec doc is currently unavailable at Form Factors.
• Support the latest Intel & AMD Socket • High efficiency and reliability • Low ripple & noise	OK. Note that warranty is unspecified.
DC to DC converter design	Used also on X series.
Super low noise fan control	Like other current Seasonics?
• 100% hi-pot test • 100% burn in, high temperature cycled on/off	This is expected
Certifications: CUL, TUV, CB, CE, FCC, C-tick	As expected.
• Short circuit protection on all outputs • Over voltage protection • Over power protection	OK.
Full Range Input 100 ~240V (Active PFC)	Like most good PSUs
Physical: 175mm (6.9") x 85mm (3.3") x 63.5mm (2.5")	Standard TFX12V size.
Note: Formfactors.org no longer lists the recommended design guidelines for various desktop PSU variants in separate documents. The TFX12V v2.3 specifications are contained in the Power Supply Design Guide for Desktop Platform Form Factors, Rev. 1.1 dated March 2007. This PDF file is downloadable from Form Factors.

I took a quick peek inside the unit by undoing four screws. The internal tidiness should not have surprised me, with all the Seasonics I've opened up in the past, but given the small size of the unit, it was still nice to see.

Very tidy inside, with no point-to-point wiring. There are three daughter boards mounted on the main PCB. The main capacitor is a high quality 105°C 420V 220µF. This angle clearly shows the DC/DC board to which the output connectors are directly mounted, very similar to the board and scheme used in the X series PSUs. The 80mm fan is a 15mm thin ADDA AD0812MB-D90, rated for 3500rpm and 40dBA. Not exactly quiet at full speed, as is the case for most PSU fans.

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