4 ms·

Anecdotally my house draws 0.4 kW when idle and 0.6-0.7 kW when both my 8K screen and my computer are on. Since my computer draws 0.1-0.2 kW, I surmise that the

by dllu 2y ago

Anecdotally my house draws 0.4 kW when idle and 0.6-0.7 kW when both my 8K screen and my computer are on. Since my computer draws 0.1-0.2 kW, I surmise that the QN800A doesn't draw 300-400 W total --- maybe 100-200 W. I run my screen on a brightness setting of 21 (out of 50) which is still quite legible during the day next to a window. Also, I have solar panels for my house (which is why I'm able to see the total power usage of my house).

Aurornis 2y ago
RTINGS reviewed the Samsung QN800A as consuming 139W typical, with a 429W maximum: https://www.rtings.com/tv/reviews/samsung/qn800a-8k-qled#test_79 https://www.rtings.com/tv/reviews/samsung/qn800a-8k-qled#tes... The parent comment is completely wrong on nearly every point it makes. I don't know why it's so upvoted right now. It doesn't even pass the common sense test. Does anyone really think TVs have 200W CPUs inside just to move pixels around? That's into the territory of a high-end GPU or server CPU. You don't need that much power to move some pixels to a display.
- stephen_g 2y ago
  Surely they'd be using image processing ASICs instead of CPUs anyway, hence why they don't draw that kind of power!
- raisedbyninjas 2y ago
  I didn't smell anything. A 200W PSU isn't terribly expensive and being cheaper than more efficient processors seems reasonable. I also only run a single 4k monitor so haven't thought about driving 4x the pixels recently.
  - Aurornis 2y ago
    > I didn't smell anything. A 200W PSU isn't terribly expensive and being cheaper than more efficient processors seems reasonable 200W is the realm of powerful GPUs and enthusiast/server CPUs. Common sense would rule out an 8K TV requiring as much power as an entire gaming GPU just to move pixels from the HDMI port to the panel.
    - shiroiushi 2y ago
      Maybe these TVs are using salvaged Pentium4 CPUs...
    - Maakuth 2y ago
      And certainly it would require active cooling. TV with audible fans could be a hard sell!

by dllu 2y ago

Aurornis 2y ago

RTINGS reviewed the Samsung QN800A as consuming 139W typical, with a 429W maximum: https://www.rtings.com/tv/reviews/samsung/qn800a-8k-qled#test_79 https://www.rtings.com/tv/reviews/samsung/qn800a-8k-qled#tes... The parent comment is completely wrong on nearly every point it makes. I don't know why it's so upvoted right now. It doesn't even pass the common sense test. Does anyone really think TVs have 200W CPUs inside just to move pixels around? That's into the territory of a high-end GPU or server CPU. You don't need that much power to move some pixels to a display.

stephen_g 2y ago
Surely they'd be using image processing ASICs instead of CPUs anyway, hence why they don't draw that kind of power!
raisedbyninjas 2y ago
I didn't smell anything. A 200W PSU isn't terribly expensive and being cheaper than more efficient processors seems reasonable. I also only run a single 4k monitor so haven't thought about driving 4x the pixels recently.
- Aurornis 2y ago
  > I didn't smell anything. A 200W PSU isn't terribly expensive and being cheaper than more efficient processors seems reasonable 200W is the realm of powerful GPUs and enthusiast/server CPUs. Common sense would rule out an 8K TV requiring as much power as an entire gaming GPU just to move pixels from the HDMI port to the panel.
  - shiroiushi 2y ago
    Maybe these TVs are using salvaged Pentium4 CPUs...
  - Maakuth 2y ago
    And certainly it would require active cooling. TV with audible fans could be a hard sell!