We were a little bit disappointed with Nexus RX-8500. Since it is part of the same series as RX-6300 we expected it to achieve a higher efficiency. RX-6300 uses a partial synchronous (i.e., instead of using rectifiers on the +12 V output it uses MOSFET transistors) and this explains the better performance from this 630 W model.

But that doesn’t mean that RX-8500 is a bad product, on the contrary: it can really deliver 850 W at high temperatures, has voltages closer to their nominal values than required (3% tolerance while ATX specs allow up to 5%), presents low noise and ripple levels and is equipped with a low-noise fan. It also supports three-way SLI, but the cables for installing the third video card must be bought separately.

We think Nexus should have labeled the +12V rails outside the unit. This surely would help advanced users, since this unit has four rails and the load distribution used on this power supply is confusing.

Costing USD 150, it competes directly with Cooler Master Silent Pro M 850 W, which on our tests achieved higher efficiency and also comes with a modular cabling system supporting three-way SLI – and coming with all necessary cables. Nexus RX-8500 is certainly an option for the user looking for an honest 850 W power supply at a fair price, however we recommend you to buy Cooler Master Silent Pro M 850 W instead.