How to choose the right computer power for Graphic Cards?
Key words: Hardware | Power
Calculating how many watts a computer power supply needs
The power conversion of the device is maximized at 50% load of the power supply, i.e. the optimal utilization of the power supply. So, the recommended wattage of the computer power supply can refer to the following formula Minimum Wattage = (CPU + GPU)/0.5 + 50W (power consumption of other computer hardware) For example, your graphics card is Nvidia RTX 4090 , which is rated at 450W, so the NVIDIA recommended power supply for computers is 850W, and if your CPU is Intel i912900K. It is rated at 125W , that recommended power supply wattage is not enough to support your device to run smoothly. According to the above formula, the power supply you need should be:(125+450)/0.5+50 = 1200 watts You can refer to the table below to quickly check the power supply wattage you need for your computer:
RTX4090
AD102
24GB D6X
1200W
RTX4080
AD103
16GB D6X
1000W
RTX3090Ti
GA102
24GB D6X
1000W
RX 6950XT
Navi 21
16G D6
850W
RTX3090
GA102
24G D6X
850W
RTX3080Ti
GA102
12G D6X
850W
RTX3080 12G
GA102
12G D6X
850W
RX6900X
Navi 21
16G D6
750W
RX 6800XT
Navi 21
16G D6
750W
RTX3080
GA102
10G D6X
750W
RTX3070Ti
GA104
8G D6X
750W
RX6800
Navi 21
16G D6
650W
RX 6750XT
Navi 22
12G D6
650W
RTX2080Ti
TU102
11G D6
650W
RTX3070
GA104
8G D6
650W
RX 6700XT
Navi 22
12G D6
650W
RTX3060Ti
GA104
8G D6
650W
RTX2080S
TU104
8G D6
650W
RTX2080
TU104
8G D6
650W
RTX2070S
TU104
8G D6
650W
GTX1080Ti
GP102
11G D5X
650W
RTX2070
TU106
8G D6
650W
GTX1080
GP104
8G D5X
650W
RX 6650XT
Navi 23
8G D6
550W
RX 6600XT
Navi 23
8G D6
550W
RTX3060
GA106
12G D6
550W
RTX2060S
TU106
8G D6
550W
RX6600
Navi 23
8G D6
450W
RTX2060
TU106
6G D6
550W
RTX3050
GA106
8G D6
450W
GTX1660S
TU116
6G D6
450W
GTX1660Ti
TU116
6G D6
450W
GTX1660
TU116
6G D6
450W
RX 6500XT
navi24
4G D6
450W
GTX 1060 6G
GP106
6G D5
450W
Power efficiency
In order to minimize energy loss, we need to be careful when choosing the cords for the power supply. You can see the categories of cords such as 80PLUS Bronze, 80PLUS Gold, etc. which represent the standard of power conversion rate. You can usually choose a power supply with 80PLUS Bronze or above certification. The higher the rating, the higher the conversion efficiency, and in general, most of the power supplies with Gold or above are of good quality. Advantages of high conversion rate:
Low heat generation and silent power supply.
Power saving.
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