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200 W for gaming card? Just ridiculous. Even gtx 1050 need 300 W PSU. And modern quiet fans in quiet cases are really quiet - below 20db, so it's difficult to h

200 W for gaming card? Just ridiculous. Even gtx 1050 need 300 W PSU. And modern quiet fans in quiet cases are really quiet - below 20db, so it's difficult to hear it at all. My son have such with Gtx 1080 - it's the gaming card.

sliken 10y ago
GTX 1050 is just 75 watts, nvidia is just being conservative because many people have crappy power supplies or tons of power consuming extras. Assuming an intel cpu (mostly 65 watts or less), a SSD (few watts), some dims, and the normal overhead for usb/power conversion, etc. you can get away with quite a bit less than 300.
- EugeneOZ 10y ago
  card: 75w, cpu when gaming: 80w, memory: 6w, 2 ssd drives: 6w. Total 167 W. 200 W pcu with 80% efficiency: 160 W. PCU with 95% efficiency: 190 W. Step left - step right (any gaming hard moment) and bye bye. Looks like nvidia recommendation is not so dumb. And it's for a low-level gaming card.
  - masklinn 10y ago
    > 200 W pcu with 80% efficiency: 160 W. PCU with 95% efficiency: 190 W That's not how efficiency is computed (in general, but especially in PSU). The power rating (200W in your example) is what the PSU can provide to the system as DC power, the efficiency is the difference between AC input (wall-draw) and DC output. An 80%-efficient 200W PSU will provide 200W internally but draw 250W from the wall-plug (and waste the extra 50W as heat). If your 200W PSU maxes out at 160W it's not because it has 80% efficiency it's because it's a worthless piece of shit. You should throw it away as there's significant risk it will blow up (figuratively or literally) and/or catch on fire. Here's an article (in french but you can look at the pictures) checking out garbage PSU exhibiting that sort of behaviour: http://www.x86-secret.com/dossier-36-3000-Alimentation_Noname.html http://www.x86-secret.com/dossier-36-3000-Alimentation_Nonam... spoiler: shitty components, detonations and burnt smells.
    - EugeneOZ 10y ago
      no worries, I use pretty decent CPUs, calm down in your negative adjectives.

sliken 10y ago

GTX 1050 is just 75 watts, nvidia is just being conservative because many people have crappy power supplies or tons of power consuming extras. Assuming an intel cpu (mostly 65 watts or less), a SSD (few watts), some dims, and the normal overhead for usb/power conversion, etc. you can get away with quite a bit less than 300.

EugeneOZ 10y ago
card: 75w, cpu when gaming: 80w, memory: 6w, 2 ssd drives: 6w. Total 167 W. 200 W pcu with 80% efficiency: 160 W. PCU with 95% efficiency: 190 W. Step left - step right (any gaming hard moment) and bye bye. Looks like nvidia recommendation is not so dumb. And it's for a low-level gaming card.
- masklinn 10y ago
  > 200 W pcu with 80% efficiency: 160 W. PCU with 95% efficiency: 190 W That's not how efficiency is computed (in general, but especially in PSU). The power rating (200W in your example) is what the PSU can provide to the system as DC power, the efficiency is the difference between AC input (wall-draw) and DC output. An 80%-efficient 200W PSU will provide 200W internally but draw 250W from the wall-plug (and waste the extra 50W as heat). If your 200W PSU maxes out at 160W it's not because it has 80% efficiency it's because it's a worthless piece of shit. You should throw it away as there's significant risk it will blow up (figuratively or literally) and/or catch on fire. Here's an article (in french but you can look at the pictures) checking out garbage PSU exhibiting that sort of behaviour: http://www.x86-secret.com/dossier-36-3000-Alimentation_Noname.html http://www.x86-secret.com/dossier-36-3000-Alimentation_Nonam... spoiler: shitty components, detonations and burnt smells.
  - EugeneOZ 10y ago
    no worries, I use pretty decent CPUs, calm down in your negative adjectives.