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Rectangular black ATX power supply unit with fan grille

KHACHIMO

KHACHIMO R8R7 850W power supply

SKU CH-0BQS-D9MQ5

An 850 W ATX power supply with 80 PLUS Gold efficiency, Zero RPM fan mode and Modern Standby compatibility for fast wake times and quiet operation

  • Product typeATX
  • Modern Standby support enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption and cooler temperatures
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • ATX form factor fits standard desktop builds

Power for Modern Standby Systems

The KHACHIMO R8R7 delivers 850 W of ATX power with 80 PLUS Gold efficiency. It targets builders who want fast wake-from-sleep times and lower energy draw during idle periods. The unit suits workstations and gaming rigs that rely on Modern Standby sleep states. It is not for systems that require redundant or server-grade power architectures.

Thermals Noise and Efficiency

Gold certification means high efficiency across typical loads, reducing waste heat and overall power consumption. A Zero RPM fan mode stops the fan completely at low and medium loads for near-silent operation. Resonant LLC topology with DC-to-DC conversion keeps output clean and minimises coil whine. The design runs cooler and quieter than lower-rated units under the same demand.

Build Integration and Compatibility

Standard ATX dimensions let the supply fit typical chassis layouts without proprietary brackets. The DC-to-DC design supports modern low-power sleep states, freeing the builder from legacy group-regulation constraints. Cabling follows conventional ATX pinouts so it works with common motherboards and graphics cards. It does not address builds needing SFX or TFX form factors.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $365.99
Pricier than about 83% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

How do I install the ATX power supply and what step is often missed?

Mount the unit in the case with the four screws, connect the 24-pin motherboard cable, the CPU power cable, and all GPU or drive cables, then flip the rear power switch to on — many builders forget that final switch.

What maintenance or replacement will the 850W unit need later?

The 80 PLUS Gold certified PSU has no user-serviceable parts; only occasional dust removal from the intake grill is required, and the Zero RPM fan mode reduces bearing wear during low loads.

What limit appears first under sustained heavy load?

The 850 watt continuous output ceiling is reached before thermal protection engages, so total system draw must stay within that rating.

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