Seasonic M12-700 Review Uploaded

[jonnyGURU]

You can read the review here:

http://www.jonnyguru.com/PSU/M12-700/

I forgot to take a picture of the label on the 120MM fan, so I will have to do at least one update this weekend.

Any questions, comments, etc, please feel free to post them here.

[dBTelos]

Good review. A little on the pricy side, just like the S12.

[Oklahoma Wolf]

Yeah - at that price I'd be buying Silverstone/Etasis, no question about it. I don't like how hot this thing was running by the end... if it wasn't using really good caps, I probably wouldn't recommend it at all.

But it does have really good caps, so it should hold up well long term. Especially when not loaded to full capacity 24/7 ;)

[burebista]

A good review, as usual.
Still I try to figure why they put that little fan on it. A 60mm high speed fan has nothing to do with legendary silence of Seasonic PSU's.
It's true that it kicks in at >400W load, but...

[Howard]

Nitpicking as usual, but on the last page you describe the voltage regulation as "decent" and later on the same page as "excellent". I'm definitely meaning no offense, but this was quite confusing when I read it for the first time.

[jonnyGURU]

Excellent is decent. Not indecent. ;)

[davidhammock200]

Posted @DFI: http://www.dfi-street.com/forum/showpost.php?p=616861&postcount=30

Thanks again Jonny! ;)

Do you know if the Seasonic S-12E+, handles the +12V rails, the sames as the M-12's?

[jonnyGURU]

Thanks Dave, and welcome aboard.

Don't know about the S12's, I'm afraid.

[davidhammock200]

Thanks Dave, and welcome aboard.

Don't know about the S12's, I'm afraid.I know these Seasonic builds, their M-12 & Corsairs, are for all purposes single rail PSU's,
but I'm willing to go along & give them the benefit of the doubt until I see a problem. ;)

[Howard]

Excellent is decent. Not indecent. ;)
"Acceptable" is also decent, is it not? If so, then you'd be describing a whole range of regulation by using the word "decent".

[Iantikas]

Beautiful review ;) and nice PSU...

...good luck for the forum ;) ...

...Le tue son le migliori recensioni di PSU che abbia mai letto e ci si può fidare al 100% di quello ke affermi sugli alimentatori ke analizzi :) ...

..sorry for the english (or for the italian :D ) and greetings from italy :) ..bye

[tommrussell]

as always a great read , and thank you for solidifing my decission on the corsair

[ike0069]

Another excellent review.

How does the insides (caps, build quality, air flow design) of this PSU compare to the new Corsair unit? From the pics of the Corsair 620W unit, they look neary identical except for the color of the HS.

[Bbq]

Well, the Corsair seems to have caps rated for 105 degrees, while the M12 has them up to 85, I think it has bigger sinks (maybe?), and it's still seasonic, so hitachi primary.

[Oklahoma Wolf]

The Corsair and M12 use primarily the same 105 degree rated United Chemicon caps on the secondary that I can tell.

[madmat]

Since it's two large rails rather than four smaller rails it looks like a good candidate for the new DX10 cards if the rumours of through the roof wattage requirements are correct.

[dBTelos]

It wont be able to do DX10 SLi though, at least high-end DX10 SLi. Still too little power.

[jonnyGURU]

It wont be able to do DX10 SLi though, at least high-end DX10 SLi. Still too little power.

I don't think so. I think the guys at Seasonic have an inside look at things and the power demand of the new GPU's was the reason they got rid of the OCP's essentially creating one big 12V rail. Also why they have PCI-e cables with two PCI-econnectors on each (as the engineering sample cards have two PCI-e connectors each.)

[dBTelos]

So they advertise multiple rails, but put toghether a single rail PSU? DX10 is giving me headaches :(

[RaynQuist]

So Seasonic S12 energy+, M12, Corsair, Mushkin, and Antec TP Trio all lack the individual OCP.

Does NeoHE do this too?

[jonnyGURU]

So Seasonic S12 energy+, M12, Corsair, Mushkin, and Antec TP Trio all lack the individual OCP.

Does NeoHE do this too?

Not sure. There's an OCP IC at the end of the traces where the Trio doesn't (despite same PCB.) After that IC, it's anyone's guess since I'm not into IC engineering. ;)

[burebista]

SPCR review (http://www.silentpcreview.com/article676-page1.html) with thanks to jonnyGURU. ;)
In reality, there is only a single +12V rail. Thanks to Johnny Guru for his excellent detective work in his review of the M12-700 for this discovery..

[davidhammock200]

So Seasonic S12 energy+, M12, Corsair, Mushkin, and Antec TP Trio all lack the individual OCP.

Does NeoHE do this too?M-12, Corsair & Trio, I don't know about HE.

I believe the Mushkin is a ToPower & has OCP on each rail.

[jonnyGURU]

SPCR review (http://www.silentpcreview.com/article676-page1.html) with thanks to jonnyGURU. ;)

Too bad they couldn't spell my name right! :D

Oh well.. I'll speak with Devan Cookie about that later. Maybe he could say "hi" to Myke Chinn for me. ;)

(I hope he sees that. :))

[burebista]

Too bad they couldn't spell my name right! :D
Oh well, congrats for your first post on SPCR. :D
And maybe they'll see your nick and spell it correctly in review. lol

[CROM]

Hello :)

I'm new to this forum and following the review on jonnyguru.com i've decided to buy this PSU...well, the PSU has finally arrived but i fear that it could be defective: looking closely at the pinout of the ATX 24 pin connector i've noticed that actually 1 cable is missing...it's the cable opposite to the gray cable (i mean the cable that should be in front of the gray cable in the other row): is this normal in this particular unit? I don't wanna plug my new motherboard to check whether it's defective or not cause i fear that this could damage it so if in this forum there's another owner of this type of PSU that could check the pinout i'd be really (and eternally ;) ) grateful :)

thank you in advance for your help (and sorry for my poor English :o )

P.S.
please answer only if you acutually own this model: i wanna be 100% sure it's defective before using the warranty

[jonnyGURU]

Hello :)

I'm new to this forum and following the review on jonnyguru.com i've decided to buy this PSU...well, the PSU has finally arrived but i fear that it could be defective: looking closely at the pinout of the ATX 24 pin connector i've noticed that actually 1 cable is missing...it's the cable opposite to the gray cable (i mean the cable that should be in front of the gray cable in the other row): is this normal in this particular unit?


You're only missing the -5V. They removed that from the spec AFTER they went to 24-pin. So you may have a 24-pin interface, but current spec utilizes only 23 wires. ;)

[jonnyGURU]

So Seasonic S12 energy+, M12, Corsair, Mushkin, and Antec TP Trio all lack the individual OCP.

Does NeoHE do this too?

Whoa! I just caught you said Mushkin. Why did you throw Mushkin in there?

Mushkin's Topower. All of the other units you mentioned are Seasonic built.

[CROM]

You're only missing the -5V. They removed that from the spec AFTER they went to 24-pin. So you may have a 24-pin interface, but current spec utilizes only 23 wires. ;)

thanks: you're my saviour! ...actually I arrived at home from work just an hour ago...(and here in Italy is almost 2 o'clock in the morning: it's been definitely a hard day...thanks God every given friday comes a weekend ;) )..and this thing was about to ruin the only good news of the day (the arrival of the PSU which means that finally i can finish my new PC :D )

BTW you have all my appreciation for the great reviews you write: you really set THE standard in PSUs reviews :)

[Spectre]

You're only missing the -5V. They removed that from the spec AFTER they went to 24-pin. So you may have a 24-pin interface, but current spec utilizes only 23 wires. ;)

Most of the time ;)

You can have 24pin ATX PSU's with a -5v. With the ATX12v2.0 they don't have to have a -5v but there are ATX12v1.3 PSU's with 24pin and a -5v though not as current.

[oneils]

I installed the 500 watt version of the Seasonic M12 yesterday.

Dead on arrival. Absolutely no activity when pressing the computer on buton. Of course I had double checked that the PSU on button was in the 'I' position, and all connections to and from the PSU were correct and properly seated. I tried the Seasonic troubleshooting tip of flicking the I/O button on and off, but no joy.

I also checked the front panel connectors on the motherboard to make sure they had not been dislodged.

After numerous attemps, I re-installed my Antec PSU and everything worked. That makes it conclusive it was DOA as far as I am concerned.

So, I'm sending it back to my retailer this weekend.

I sure hope I don't get a second dud.

While I am disappointed, I know very well that ANY electronic device, no matter how costly or no matter how high the brand is held in regard, DOA can happen.

This is my first post here and I'll probably be a regular reader, if not poster.

-Bob

Hey Bob, did you happen to purchase that PSU from PCCyber in Ottawa (prices for the seasonic psus are a little high, but after shipping from e-tailers I didin't find them to be to big of a difference)?

I just purchased the 600watt variant from them. It works great. Did your second one pan out?