Originally Posted by SgtSpike
Just a comment about this, because I find it odd. The spec page *claims* to give 2x 20A 12v rails, but then says those rails can only output 336W? Let's look at some calculations...
20A x 12V = 240W
240W x 2 = 480W
Technically, if those rails really are outputting 20A each, they should be giving 480W of 12V power. So which calculation is wrong on their website? Not sure, but I suspect that the 20A may be the actual maximum power draw after efficiency has been weighed in?
If we convert the 336W back to amps, here's what we get:
336W / 2 = 168W
168W / 12V = 14A
Interesting how comes out to an even amperage....
At any rate, that is your REAL amperage available on each of your 12v rails of your current PSU.
And a final note: 14A / 20A = .7 = 70%, which is a typical percentage of efficiency for a low-end PSU.
Did I say this comes up four times a day? Maybe five times a day?
In case you missed it.....
The "per rail" rating IS NOT a rating of power capability. It is a designation of at what current the power supply will shut down. Multiple +12V rails, in most instances, are NOT multiple +12V rails. They are a single +12V rail split up into multiple +12V rails each with a current limiter, called an OCP (for Over Current Protection) that will shut down the PSU if exceeded. So, as I said before, the number you see below +12V1, +12V2, +12V3, etc. on the label is just telling you what the OCP is set for on each circuit branch. This is why they can not be added up. This is not misleading. It's just a fact. The number below this, or the "combined maximum output" number, is the actual +12V output capability of the PSU.
We're talking two things with these: OCP rating and PSU capability. They're two different things and mathamatically can not be equated to each other.
Originally Posted by sccr64472
OCZ doesn't make power supplies either. They're simply a rebrander just like Corsair.
Well, to be fair most PSU "rebranders" do a bit more than slap a label on an existing product. The "rebrandeders" have their own engineers and R&D guys, etc. and have a lot of input in the finished product. Corsair probably has one of the best teams I've seen. Bested probably only by PCP&C (the original brand and now division of OCZ, but not necessarily OCZ as a whole). For example: Corsair may use a S12 PCB, but a good number of the components used and therefore specs are quite different than an actual S12.
Originally Posted by lenzo
Admitted and agreed, previously made by the same people who made EPower (relabeled older style OCZ's) and a few others, GE?
NOT FSP. Come on guys. There's a quiz later.
EPower IS Topower. It's their American division. And the old ModXStream, PowerStream, etc. were all made by Topower.
Most of the CURRENT OCZ stuff (not PCP&C, but GameXStream, StealthXStream, etc.) is, as DuckieHo points out, FSP. If it's not FSP, it's 3Y, like the ProXStream. But 3Y is a division of FSP now anyways.