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Re: GPU advise?

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Am 24.10.25 um 06:08 schrieb Paul:
> On Thu, 10/23/2025 2:01 PM, Peter McD wrote:
>> Am 21.10.25 um 12:27 schrieb Paul:
>>> On Tue, 10/21/2025 4:46 AM, Edmund wrote:
>>>> GPU advise?
>> ...
>>> A couple of my power supplies, have multiple 2x4 connectors and that
>>> might be sufficient up to 300W. Check the card picture for
>>> evidence of the connector type there. If shopping that table
>>> there, and not going too high up into the table, my 750W PSU would
>>> likely be sufficient. For the top card in the list, I'd have to
>>> go shop for a new 1200W supply with the 16 pin connector (2x6+4, the
>>> 4 pins are status/declaration pins). The bottom card in the list
>>> might have a 2x3 or a 2x4 on it, and the PSU that have 2x4
>>> connectors, the end part unsnaps to convert the connector into
>>> a 2x3. All the supplies in the room, have at least one
>>> connector for the bottom card in the list.
>>>
>> ...
>> Check power requirements of the card before you buy.
>> Two years ago I bought a Radeon RX 6600, good enough for my Computer
>> (500W power supply) but didn't check the card's power requirements
>> which is > 500W, so I had to replaced the power supply as well.
> 
> The math used in such estimates is bad, and you can do better than
> that as a user, to estimate the power. Let us give this a try.
> 
> Modern video cards use closed loop feedback to control
> power consumption. The video card clock will drop, rather
> than the card exceeding the capabilities of its onboard
> power converter.
> 
> https://www.techpowerup.com/gpu-specs/radeon-rx-6600.c3696

...

All in all I agree that the average power requirements are much lower 
than that what my power supply could deliver. My computer uses a 65W 
processer (so to say) and it temperature is currently around 38°C, so I 
estimate the whole system may normally use around 50 W.

But I also read that the RX6600 power consumption may spike to more than 
500W under certain conditions and I want that covered.

Peter

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Thread

GPU advise? Edmund <nomail@hotmail.com> - 2025-10-21 10:46 +0200
  Re: GPU advise? Paul <nospam@needed.invalid> - 2025-10-21 06:27 -0400
    Re: GPU advise? Edmund <nomail@hotmail.com> - 2025-10-21 14:37 +0200
    Re: GPU advise? Peter McD <peter.posts@gmx.net> - 2025-10-23 20:01 +0200
      Re: GPU advise? Edmund <nomail@hotmail.com> - 2025-10-23 23:13 +0200
      Re: GPU advise? Paul <nospam@needed.invalid> - 2025-10-24 00:08 -0400
        Re: GPU advise? Peter McD <peter.posts@gmx.net> - 2025-10-24 10:51 +0200
          Re: GPU advise? Paul <nospam@needed.invalid> - 2025-10-24 09:38 -0400
            Re: GPU advise? Peter McD <peter.posts@gmx.net> - 2025-10-25 13:13 +0200

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