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Rosewill Capstone series

I have a Capstone 550-M. It runs my 3570K & 7950 (Boost) just fine. It's a nice power supply. Never made any noise.
 
I have the 650m it works great. I like it a lot and would probably buy Rosewill again because they seem to be great quality for the money.
 
silicon said:
looking at the 650M Capstone Rosewill....opinions anyone?
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Manufactured by Superflower using high grade capacitors and other components, rated for continuous operation at 50°C and Gold efficiency. Backed by 7 year warranty. You just can't go wrong.
 
silicon said:
I may have read somewhere that the wires on this unit are a bit on the short side....was this the case?
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Here are the cable lengths of the 750M: http://www.techpowerup.com/reviews/Rosewill/CAPSTONE-750-M/2.html
techpowerup said:
Also all cables are long enough and the distance among connectors is the right one according to the ATX spec.
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I would assume 650M is the same because it also has the same numbers of connectors, except for lacking a second EPS connector.
 
silicon said:
5v regulation?
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Power supplies supply power at different voltages. The main ones are +3.3V, +5V and +12V. Most of the power your PC uses is +12V. In modern units, there's only one main output, +12V, and the lesser voltages are then converted from that rail, but each voltage output still fluctuates separately from the others.

According to the ATX specification, power supplies have to regulate these voltage outputs to +/- 5% of the nominal value, e.g. for the +12V output, the actual voltage can be anywhere from 11.4V to 12.6V in order to be officially "within spec". However, since 5% is the upper limit, it makes sense to prefer units that are more stable than absolutely required. Some units are capable of near perfect regulation of about 1%, but I would personally consider +/- 3% regulation to be top notch.

Looking at the Techpowerup review of the 750-M unit, it is capable of 1.78% regulation on the +12V output, 3.3% on the +5V, and 4.24% on the +3.3V. The 3.3V number is indeed a bit high, but since it's a minor rail and still within the limits of the ATX spec, it's fine. EDIT: I don't quite get how Techpowerup gets these numbers though. If you look at the graphs and chart under them, the regulations seems to be much tighter than what I said above, which is more in line with what I'd expect from a Superflower built unit.
 
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silicon said:
I may have read somewhere that the wires on this unit are a bit on the short side....was this the case?
Click to expand...

I can't really say. I don't have much to compare it too because this was my first computer build. I don't remember having an issue with cable length with my machine.
 
so from what i have read regarding the specs of this supply the modular version and the fixed cable version are identical.
 
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