Hi,

Live in NZ with 240v electric and need to buy a PSU board for my motherboard. The current board is a IP-V120DD and the power supply is a toshiba 7041 with 6.32a and 120w. Looking on the internet the options for buying a new one was 200w

https://www.amazon.com/GOMMER-Switch-Mining-Supply-Replacement/dp/B09PVMFZZK

I want to understand the relationship between amp/volts/watts but also want to understand if this is the right thing to buy and the right power supply.

Thanks all.

 

Any electronic device should specify the voltage and current requirements of the device.
Power requirement is calculated by multiplying current and voltage.

P = I x V
where,
P = power in watts
I = current in amps
V = voltage in volts

For example, if the device requires 8A @ 12VDC, power requirement is 8A x 12V = 96W.
One would select a PSU (power supply unit) that is rated at least 20% higher power in order to provide some overhead. Hence in this example a PSU rated at 10A @ 12VDC = 120W would be well suited for this application.

 

Thanks for replying

Do understand the maths between the 3 but do not understand the impact.

The original part was https://www.in-win.com/en/pc-power-supply/ip-v-series/APAC, 120W, 7A, 12V

Can I buy a 300w vs 120w. Do I just buy a power supply with 300w output or is it more complicated.

 

Answer this question first.

What are the requirements of the load?
In other words, how many volts and amps does the computer require?

 

It is a standard ATX motherboard Gigabyte (GA-H87N-WIFI) with a 24 pin connector. In the manual it recommends a 500W power supply however it was housed in a BQ656S which has an internal DC-DC Inverter Board (IP-V120DD) which has the following spec 120W, 7A, 12V

This is the part which is broken and what I would like to replace.

Link to case: https://www.in-win.com/uploads/Product/computer-chassis/bq_series/BQ_Series_eDM.pdf

 

Gigabyte GA-H87N-WIFI requires a 4-pin ATX_12V supply and a 24-pin ATX supply.
300W is typical but depends on additional hardware on your system. 500W is recommended.

Reference: Gigabyte GA-H87N-WIFI User's Manual