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1000w Gold VS. Platinum Efficiency/Usage(Corsair RMx vs HX series)

Joriem

24 months ago

What do you gain from using a 1000w Platinum PSU vs a 1000w Gold PSU?

Scenario.

Let's say(theoretically) that the system we're evaluating is pulling 900w. This system is used daily for many hours at a time, so we know that we're appropriately loading any given PSU to the 80+ standard, at 50c.

Would, in your opinion, the Platinum PSU be worth the one time cost over the lesser savings of the Gold PSU, or, at this amount of wattage, the Gold PSU is more than adequate for the given scenario?

According to Corsair, both PSUs are identical, save for the fact that the HX is Platinum rated over the RMx. We're excluding the cost of the i SKU of either series of PSU.

Comments

  • 24 months ago
  • 3 points

Efficiency savings calculator here was made for this.

  • 24 months ago
  • 3 points

Let's say(theoretically) that the system we're evaluating is pulling 900w. This system is used daily for many hours at a time, so we know that we're appropriately loading any given PSU to the 80+ standard, at 50c.

Peak efficiency requirements in the standard are actually at 50% load.

Realistically speaking, if we built a PC that could pull 900W with everything at full tilt abuse testing, its average power dissipation would likely be in the 100-500W range most of the time.

Not sure why we would want to run it at 50C. There's nothing "appropriate" about that. Running a PSU near max label rating at max temp rating non stop would just wear it out rapidly.

Anyway... assuming the difference in efficiency matches the difference in the standard, the platinum would draw about 23W less from the wall than the gold when powering a 900W load.

In reality, the difference is probably even less than this, as many gold PSU's exceed the gold standard by wider margins.

Under more realistic "average" load, all things considered, the difference in average power dissipation for a system used 8 hours a day, idled for 16, with a peak 900W power draw, would probably be less than 5W, or around 10 cents a week.

  • 24 months ago
  • 2 points

A bit more efficiency with the Hx over RMx. Your really looking at a 1% or 2% at most in terms of efficiency difference. So couple of watts difference from the wall.

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