. A PSU is needed for a DAW (quiet as possible) build with an expected power consumption of up to 350W nominal. After factoring in future possibilities, it looked like a ~450W unit is workable but am budgeted for ~$60. Prefer: 80 Plus, low noise, reliable. Below are examples from the vast PSU array being scrutinized.
. NewEgg lists the XFX P1-450S-X2B9 PSU as being 80 Plus Bronze, but I can't verify certification. Same ad claims 105°C Japanese caps, but the XFX website, states "High Reliable 105°C Japanese Capacitors: No". Is this normal background "creative marketing"?
. Another PSU brand @ directron is Solid Gear who makes the SDGR-450BR & SDGR-550BR models. As with others, I can't seem to verify 80 Plus certification, reviews, or user borne comments to support ad claims or it they're a waste of coins.
. Can anyone here vouch for the performance/reliability of these PSU models or point me to some overlooked links? Any other label/model PSU suggestions are surely welcomed.
On XFX's webpage it states that the P1-450S-X2B9 uses capacitors rated up to 85°C. I wouldn't go by what newegg.com shows.
Solid Gear SDGR-450BR has obtained 80 PLUS Silver efficiency rating according to Ecova Plug Load Solutions 80 PLUS Certified Power Supplies list.
Solid Gear SDGR-550BR has obtained 80 PLUS Bronze efficiency rating.
I haven't seen any professional reviews of Solid Gear PSUs. Their +12V rail's capacity is lower than that of a reputable name brand PSU with the same total Wattage as when compared to a Seasonic PSU for instance.
There are two versions of the XFX ProSeries 450W Core Edition. The XFX P1-450S-X2B9 (V2) is very likely to be using the same internals as the P1-450S-XXB9 / XPS-450W-SEW (V1), just with a difference cable configuration.
However the fact that the P1-450S-X2B9 hasn't been reviewed means there is some question mark as to what internal components XFX have used for the V2.
. Much obliged for your observations and input, especially about the independent regulation used in the Capstone models. Apparently the main +12V rail also feeds separate DC-DC circuits that output the +5V and +3.3V rails. All in all, looks like quite a solid design for the money. Odds are that any PSU in this DAW would see around a 350W load tops, so I'm guessing a Capstone 450W would probably remain relatively quiet. The 450W Capstone at Newegg never seems to wander too far past the limits of my wallet. Thanks again.