Seasonic M12D 750w ATX PSU

Packaging & Appearance

Packaging & Appearance

While most manufacturers tend to go for the loud and lary approach to packaging their products just so that they stand out on retailers shelves, Seasonic have defiantly swung in the opposite direction by opting for a very professional 'pipe and slippers' look based on a black and orange theme. At the front of the box clutter has been kept to a minimum with only a picture of the unit, the model number and a few other non-intrusive specification stickers dotted around.  While at the back we have the same full feature list as seen on the previous page along with a power distribution diagram.

Seasonic M12D Packaging Front Seasonic M12D Packaging Back
 
Protection for the M12D is quite minimal with only a bubblewrap bag and a single walled layer of card keeping it safe from the outside world. This is in stark contrast to the the likes of Corsair and Cooler Master who tend to encase their PSU's in large lumps of moulded styrofoam that act almost like kevlar jackets. In fact, even the modular cables seem to have cut a better deal than the PSU in packaging department; getting their own separate compartment and a drawstring bag.

Seasonic M12D 750w Box Open Seasonic M12D 750w Contents
 
The unit its self measures in at a pretty standard 150x160x86mm and is finished in a black powdercoat. This ensures that it fits a wide range of smaller PC cases including some HTPC's and doesn't stick out like a sore thumb in a standard 'non-blinged out' PC build.
 
Seasonic M12D 750w Side Seasonic M12D 750w Front

At the rear you will find the usual kettle lead socket and power switch along with a honeycomb grill common to 120mm+ fan cooled PSU's. Thankfully the switch and socket are mounted upon a solid area of metal rather than the mesh, meaning that the casing is less likely to flex or bend if you happen to be a bit heavy handed when plugging in the power cord.

Rather than attempting to shoe horn in a 135/140mm fan, Seasonic have stuck with a tried and tested 120mm model. I'll get on to the finer details of this fan over the next page, but providing Seasonic have chosen wisely; it should still be able to compete with the Noise/CFM ratio of a larger model.

Seasonic M12D 750w Rear Seasonic M12D 750w Fan
 
Finishing up with the modular connector panel, Seasonic have fitted the M12D 750w with a total of 6 sockets for plugging in cables. Two of these are reserved for PCI-E connectors while the other four can be used for any combination of IDE or SATA connectors. From left to right the rail layout used on the connectors is +12v2, +12v1, +12v2, +12v2, +12v1, +12v1.

Seasonic M12D 750w Modular Seasonic M12D 750w Connectors
 
Lets flip over to the next page and check out what cables are included, along with what components Seasonic have used inside the unit.
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Most Recent Comments

21-03-2009, 07:26:22

JN
"Seasonic are well known for their silent yet powerful PSU's, but does their latest modular model follow suit? We find out."

http://www.overclock3d.net/gfx/artic...072344991s.jpg

Seasonic M12D 750w ATX PSU

21-03-2009, 07:58:31

w3bbo
Nice review m8. Bit on the pricey side for a 750w though imo.

21-03-2009, 08:14:26

JN
Quote:
Originally Posted by name='w3bbo'
Nice review m8. Bit on the pricey side for a 750w though imo.
Agreed. Though with 90% efficiency you might get your money back in...oooh...50 years

21-03-2009, 09:13:34

Rastalovich
Got 2x 600w M12 over a year ago for around 100 each bundled with some icybox external caddies (that I sold on for about 20).

They're good enough units. Neither of them liked doing a 8 pin pcie adapter for a gtx280 tho, wouldn't even start it. Had to use a 500w pc&p.

I'm happy to see they've changed the modular banks to reflect 2x 8 pins in this model, as the majority of us would realize, it should be 'capable' of 4x 8 pin pcie (even with 2x adapters) - it would have been interesting if it would work considering my previous experience.

I'd like to see more variety in the ability to customize modular connections as a result.

Classic review once again, 150 is quite steep tbh.

21-03-2009, 09:15:01

w3bbo
Dare I say it...needs more Jiggawatts....to be competitive.

Although having said that 1kw is OTT for most systems.

21-03-2009, 10:55:58

JN
Quote:
Originally Posted by name='w3bbo'
Dare I say it...needs more Jiggawatts....to be competitive.

Although having said that 1kw is OTT for most systems.
Yeah I think Seasonic's take on this PSU was "You dont need 1KW, so lets spend the money on good components and performance elsewhere".

21-03-2009, 15:08:25

Freak
But then if a psu isnt being pushed then wont it be more efficient than one running flat out? Plus lasting longer.

21-03-2009, 15:33:20

JN
Quote:
Originally Posted by name='Freak'
But then if a psu isnt being pushed then wont it be more efficient than one running flat out? Plus lasting longer.
Not always mate. Different PSU's have different efficiency curves. Most of the time efficiency peaks at around 50-75% load, but I've seen some PSU's hit their highest efficiency at close to 100% load.

21-03-2009, 15:44:24

Freak
ahh, then I guess you would have to look into that. Though is there much point in doing that as I would have thought there would be little difference.

21-03-2009, 19:20:09

FarFarAway
Nice review mate and seems a great PSU to power pretty much any modern rig with
Reply
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