SUPPLIED BY: JonnyGURU.com
PRODUCT: EVGA 450BV 450W
PROD LINK: 450BV Product Page
PRICE: $34.99 @ EVGA
Price is at time of testing!
We start this page with a sleeve bearing fan shot, and the total loss of the fan point in scoring later. Three years of warranty on this fan? Nope, not ok with that.
The innards themselves look to be out of the HEC/Compucase factory. Given the complete lack of heatsink on the bridge rectifiers, I’d say they were right to rate this at thirty degrees.
Line filtering on this unit is barely adequate. We have an X cap, a coil, and two Y caps to start here.
Along with another X cap, another coil, two more Y caps, and a TVS diode here. Bridges are a pair of GBU806, so despite the lack of heatsink there’s enough there to do the job. But really, I would have thrown on the heatsink.
Soldering is above average, but not perfect. Glad to see the secondary heatsink secured with a screw that has been adequately soldered down to keep it from moving, but there are enough iffy looking joints that I think I’ll be scoring a minor deduction against them.
A WT7527 handles protection for the unit.
There’s the standby controller, a TNY289PG.
A CM6800 handles PFC and PWM control for the unit. Meantime, the main filter capacitor is a CapXon unit rated at 85 degrees. I’ve let those slide before, because this rating is less critical for a large capacitor like this in the fan’s airflow, but I can’t do that today. The primary heatsink is too close to this thing. So there will be an extra deduction on top of the second tier capacitors I see throughout this thing.
Speaking of which, behold the forest of Teapo on the secondary side. Teapo’s decent for bargain units, and these are all 105 degree parts, so I’m just pleased we didn’t get any of the usual off brand garbage most budget units carry.
The 3.3V voltage regulator module. An APW7164 controller and an 87350D for output. It does indeed pull its juice from the 12V rail. It’s sort of a group regulated design and sort of not. Like some kind of group/indy hybrid that doesn’t do heavy 12V crossloads well. It’s weird, is what it is.
The two devices on the left handle the 5V output for this unit while the middle two rated for 60A between the pair handle the 12V output. I’m not sure if I would max out both the 3.3V and 12V rails at the same time, but I can’t think of a scenario where that would ever be an issue.
I will say this… the 120W combined 3.3V/5V rating is likely underrated on this unit, given the way it’s built to keep those outputs electrically isolated.
Finally, the primary side parts. Four GPT13N50DG parts… two for switchers, two for PFC, plus the PFC diode. Score time!