Old PSU with higher wattage or new PSU with lower wattage

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ookamix1

Prominent
Oct 8, 2017
1
0
510
Hello,
5 years ago I bought this 600W PSU:
https://www.amazon.de/LC600H-12-V2-31-Office-Serie-Watt/dp/B0046GJF4Q
Now I want to upgrade my cheap graphics card and I'm not sure if I should keep this PSU because it's so cheap.
Is it better if I buy something like this?:
https://www.amazon.de/quiet-Power-Netzteil-BN277-Kabelmanagement/dp/B01N4P1305

It costs twice as much and has only 500W but I don't want my PSU to damage my components.
What's different between the cheap one and the expensive one and could I keep the cheap one?
Would a cheaper/lower quality PSU with more wattage be better?
 
Solution
geofelt
What graphics card do you want to buy?
That will determine the wattage you need.
Here is a handy chart for the power you need:
http://www.realhardtechx.com/index_archivos/Page362.htm


I do not know if your cheap psu is dangerous or not.
From the price, I might expect it is.

A cheap PSU will be made of substandard components. It will not have safety and overload protections.
If it fails under load, it can destroy anything it is connected to.
It will deliver advertised power only at room temperatures, not at higher temperatures found when installed in a case.
The wattage will be delivered on the 3 and 5v rails, not on the 12v rails where modern parts
like the CPU and Graphics cards need it. What power is delivered may fluctuate and...
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geofelt

geofelt

Titan
Oct 9, 2006
54,298
4,146
174,240
What graphics card do you want to buy?
That will determine the wattage you need.
Here is a handy chart for the power you need:
http://www.realhardtechx.com/index_archivos/Page362.htm


I do not know if your cheap psu is dangerous or not.
From the price, I might expect it is.

A cheap PSU will be made of substandard components. It will not have safety and overload protections.
If it fails under load, it can destroy anything it is connected to.
It will deliver advertised power only at room temperatures, not at higher temperatures found when installed in a case.
The wattage will be delivered on the 3 and 5v rails, not on the 12v rails where modern parts
like the CPU and Graphics cards need it. What power is delivered may fluctuate and cause instability
issues that are hard to diagnose.
The fan will need to spin up higher to cool it, making it noisy.
A cheap PSU can become very expensive. Do not use one.


 
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