SUPPLIED BY: Andyson
PRODUCT: R850 850W
PROD LINK: Andyson’s current offerings
PRICE: $149.90 MSRP
Price is at the time of testing!
We’ll start the disassembly with a fan picture. The box claims this is a ball bearing fan, and since I have no time or inclination to destroy it to verify that claim, I’m just going to take their word for it.
Love the louvers on the top to help channel the air where Andyson wants it. Usually, OEMs just use a piece of cheap plastic.
Initial impressions? This looks a lot like the N700, only with the cleaner layout of the R1200. I like it.
After removing the guts, we find a pink thermal pad used to thermally couple the 12V output devices to the housing for extra heatsinking.
Soldering is near perfect on this unit. I don’t see any issues.
Eight 014N04LS parts handle the 12V output for this unit.
A CM6901 handles PWM control, with a PS223 for protection. Other parts in this shot include a Si8230BD isodriver and a MIC4427 MOSFET driver.
Line filtering starts here with two Y caps, an X cap, and a coil…
…and continues here with two more X caps, two more Y caps, one more coil, and a TVS diode. That’ll do it.
Two BU1506 parts are the bridge rectifiers.
A pair of 5R140Ps and a diode aid in PFC operation. I was not able to get a good look at the controller, but usually, the CM6901 is paired up with a CM6500. I don’t usually speculate, but I would surmise that this unit is no different.
Two more 5R140Ps act as main switchers.
The VRMs are controlled by one APW7073 and use one 86350D for output.
Electrolytic capacitors are from Nippon Chemi-Con. Polymers come from Teapo with a couple Zhenhua threw in for good measure on the VRMs. I have little experience with Zhenhua, but the Teapo polymers are tier one parts to me. Whatever you might think of Teapo electrolytics, you cannot really judge their polymers by the same yardstick. It’s like saying the Burger King across town sucks because you got sick one time at the one on this side of town.
Personally, I currently do not score against polymers – they’re usually much more reliable than electrolytics by nature. I’ll even give an unknown like Zhenhua a pass, for now, that’s how much I like polymers.
The soldering on the modular board is just about perfect, much like the mainboard. You can just see one of the Zhenhua capacitors near the bottom center, on the VRM underneath that big wire bundle.
Finally, the other side of the modular board. A few more Teapo polymer caps and one more Chemi-Con electrolytic. Those big metal bars are used to help move current around the board without traces heating up and leading to losses.