jaguarskx :
While the Silencer 610 EPS12V PSU is a very good (it's built by Seasonic) I would pass on this PSU for my own personal needs. It uses a 80mm fan which is generally loud compared to a 120mm even though it is made by ADDA. Jonnyguru mentioned the 750w was rather "noisy" and I would assume the same for the 610w version especially after seeing the specs.
When I upgrade my PC and move my current Seasonic S12 PSU into a yet to be built new HTPC, I will buy another Seasonic PSU. That would probably be the SeaSonic S12 Energy Plus SS-650HT which is rated to be up to 88% efficient and since it is a Seasonic, I know it will be quiet. However, as usual, I will probably search for hardware reviews of this PSU before actually purchasing it. I wonder if they have a 600w version.
Another contender is the Corsair HX620 (also made by Seasonic), the only drawback is the lower efficiency of "only" 83% instead of 88% for the Seasonic S12 Energy Plus SS series. Of course, those percentages represents peak efficiency, not constant across the range of different loads. However, based on several Seasonic reviews I've read, their energy efficiency is pretty much flat across the board. I recall that my Seasonic S12 is ranges between a low of 77% to a max of 83%.
Just my $0.02 I guess.
Corsair HX series seem to be based off Seasonic M12 design, which is known to be sometimes a bit warm (I said warm, not hot) and sometimes needs the fan to do some work, but I have no problem with that! Seasonic S12 are slightly more powerful and efficient, however you are giving up modular cabling, which is not worth it in my eyes. Either way you are still getting one hell of a unit.
Zorg :
Noise?... Noise?... I don't hear no F..ing noise!... or is that badges? :lol:
Seriously, It's hard to argue against the manufacturer that PC Power & Cooling OEMs their PSUs from, but noise aside, the Silencer 610 is cheaper and It's hard to get anyone to even pony up the $120.00. Plus Seasonic claims 18A per rail, assuming they aren't lying, and I prefer the single 49A rail. I guess it's a matter of choice.
The Corsair also has those really cheesy modular ribbon cables. I don't like modular, and I certainly don't like the junk insulation on the ribbon cables. I believe, unconfirmed, that the gauge of wire is smaller as well. Just something to consider in the whole package.
I can certainly understand your concern for noise when building an HTPC.
Yeah well, seasonic admitted it was a small lie on their part, even though they advertise 4 rails, they have a single huge 12V rail design, I believe this is why the Corsair HX series have advertised 4 rails and the Antec Neo series 3 rails, yet they both output the same amount of current on the combined (And single for that matter) 12V rail. Silencer has 49A, 620HX has 50A, and modular cabling to me is a plus, but then again some people might not like it and it won't be the end of the world. As I said above, either way you go you won't be sorry.
We will never have a clear winner between Seasonic products vs Seasonic products, because they are all so damn good