Seasonic M12D 850W: DC-to-DC Perfection?
by Christoph Katzer on November 26, 2008 12:00 AM EST- Posted in
- Cases/Cooling/PSUs
Internals
Opening the casing reveals a completely different design than the usual Seasonic PSUs. It reminds us of the design we saw from Acbel in the Cooler Master UCP series, as well as Impervio units from OCZ and Silverstone. There are two large heatsinks that we saw earlier, plus a smaller one on the primary side. The filtering stage is located on a small sister PCB shielded with a copper plate, at the back of the secondary side. Power then routes through a cable to the main PCB into additional filtering, and from there into the PFC stage. There are two main Nippon Chemi-Con capacitors, each rated at 390µF and 400V. These capacitors are also rated at 105°C, which is higher than most companies use.
Moving over to the secondary stage, we find additional Nippon Chemi-Con capacitors between the cables that are attached to the PCB. Below the heatsink is another sister PCB that includes the DC-to-DC circuit. We think the Enermax design was a little better here, since it also contains the cable management sockets. That allowed Enermax to clean up the main PCB, whereas the Seasonic PCB looks a little cluttered. Regardless, the end result still works well and delivers good performance.
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JarredWalton - Wednesday, November 26, 2008 - link
I have no idea... I think I said "and they feature" perhaps? Heh. Go Dragon!Slash3 - Wednesday, November 26, 2008 - link
Argh! The fingers, use them! :) It's probably faster, too, after correcting two dozen mis-transcribes.JarredWalton - Thursday, November 27, 2008 - link
I would... but carpal tunnel issues make it a problem.BikeDude - Saturday, November 29, 2008 - link
Sorry to hear about your carpal tunnel issues.But I have always thought that such issues stems from mouse usage. So at work I use my left hand for moving the pointer, and at home the right hand.
Using a keyboard should not normally be much cause for concern?
JarredWalton - Wednesday, November 26, 2008 - link
Blame the editor (me) and my speech-recognition. Should have been "fails".PrinceGaz - Wednesday, November 26, 2008 - link
On page 3, about the cables, the speech-recognition software seems to have made another error[/quote]Most of the cables are detachable and come in an extra bag Seasonic provides. The 24-pin ATX connector, 4-pin ATX12V and 8-pin EPS12V connectors, 260cm 6-pin PEG connectors...[/quote]
I think that should read two 60cm 6-pin PEG connectors.
Zoomer - Thursday, November 27, 2008 - link
I thought someone was supposed to proof-read these. ;)feraltoad - Wednesday, November 26, 2008 - link
What speech recognition s/w do you use Jarred? Do you use it just for large amounts of text entry or is useful for other things like quick posts like this. Does it make things quicker? Or does fixing the errors eat up a lot of time? I guess you just save time and don't fix those errors. haha j/k!feraltoad - Wednesday, November 26, 2008 - link
Oh. U use Dragon. Well, other questions stand!