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  #1  
Old 11-11-2018, 01:03 PM
Cenevit Cenevit is offline
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Default Which one to buy: RM550x or RM650x?

Hi there.

My current rig is listed on my sig.

I'm not from US and here the RM550x and the RM650X are about the same price.

So should I get the 650W or the 550W would be a better pick?
Is having an overkill PSU bad?
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Old 11-11-2018, 04:55 PM
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More PSU than you "need" is better. It'll run with less of a load on. Cooler and quieter.
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Old 11-13-2018, 05:43 AM
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Thanks for your input. Rep+

Yes, I ended up getting the RM650X.

I know it will be overkill for my system but I'm getting it for about the same price as the RM550X.
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Old 11-13-2018, 03:22 PM
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Quote:
Originally Posted by Cenevit View Post
Thanks for your input. Rep+

Yes, I ended up getting the RM650X.

I know it will be overkill for my system but I'm getting it for about the same price as the RM550X.
Don't think of it as overkill, think of it as room for growth.
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Old 11-14-2018, 07:03 AM
Cenevit Cenevit is offline
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Quote:
Originally Posted by Corsair Mint View Post
Don't think of it as overkill, think of it as room for growth.
Agreed, I think I'm worryng too much about effectiveness using a high end psu for low load rig's (only one vga card and no overclocking in mind).

My current psu is showing age and loves dust, haha

Well it will be my first semi-passive psu...
So just out of my curiosity, how does work it's fan control behaviour?
Does it work like a semi-passive vga card, the fan stars after some amount of % load, internal component temperature?

Thanks for your support here! Rep+
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Old 11-14-2018, 11:55 AM
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Quote:
Originally Posted by Hockster2 View Post
More PSU than you "need" is better. It'll run with less of a load on. Cooler and quieter.
That's only part of the answer not a technically responsible answer. If you take efficiency into account then you should try to be working in the 40-90% load range.

NB. from what I've read about the AX1600i, it is still extremely efficient at under 10% load but that could be the Gallium Nitrate MOSFETs at work.
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Old 11-14-2018, 05:36 PM
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As Blaise stated, "more" is not necessarily better when efficiency is involved. What is the calculated or typical power draw of your PC components?
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Old 11-15-2018, 07:16 AM
Cenevit Cenevit is offline
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Thanks folks, I really appreciate all inputs here. Rep+

Quote:
Originally Posted by Corsair Kevin View Post
As Blaise stated, "more" is not necessarily better when efficiency is involved. What is the calculated or typical power draw of your PC components?
According to the psu calculator from OuterVision:

Load Wattage: 357 W
Recommended PSU Wattage: 407 W

Although I know the calculator shows just conservative numbers for safety.
My current pc pulls most likely less than 250 W.

According to review the system power consumption (3770K overclocked + Gtx 960 G1 Gaming) is 235W load (source).

Last edited by Cenevit; 11-15-2018 at 07:18 AM.
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