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Results

Stability

results Seasonic M12D 850W PSU

From the graph it is evident that the 3.3V rail falls behind in 4th best, the 5V rail in 2nd/3rd best and the 12v rail in last. Moreover, it seems the 12V rail is way out compared with the other units.

In terms of stability, the voltage fluctuation over all the rails is just 1V. This is very stable indeed.

Efficiency

PF Standby PF Idle PF Load Watts Standby Watts Idle Watts Load
Signature 650W 16 84 91 7 94 139
Commander 850W 24 77 85 9 98 142
RX-8500 850W 20 70 81 6 96 142
Turbo Cool 860W 19 80 86 9 100 143
M12D 850W 43 87 91 8 94 137

Out of all the power supplies we’ve reviewed so far as part of out power supply roundup, the Seasonic M12D is the most efficient with its power usage. This is concluded in the watt usage as it’s needing to draw much less power than the competitor PSU’s.

Noise

As for noise output, it was slightly louder than my case fans and the 4th loudest out of all the power supplies we’ve reviewed so far.

Cost

The Seasonic M12D 850W sells for about £150. This is the top end price for an 850W power supply. Is it worth it for the extra efficiency gain though? Well if you calculate your total power savings when using this power supply, the answer is probably yes.

Related posts:

  1. PC Power and Cooling Turbo-Cool 860W
  2. Nexus RX-8500 850W PSU
  3. In Win Commander 850
  4. Antec Signature 650W Review
  5. Antec TruePower Quattro TPQ 850W

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