How does monitor choice affect PSU choice?

[phositadc]

Should monitor choice impact PSU choice?

I assume not since the monitor is not powered by the PSU, but I guess requiring the graphics card to power, for example, a 4K display instead of a 1080p display might use up extra power from the video card, and in that way the display may effect the PSU.

Anybody know for sure? I ask because I've been thinking about doing a low-power build using an Antec ISK-110 mini-ITX case that has a built-in 90W PSU. But I'm wonder if such a small PSU would forever limit me to 1080p or 1440p displays? (yes, using integrated graphics--Intel HD4600, or Iris if desktop Haswell is ever updated to including Iris.)

Thanks for any input.

 

[lehtv]

Intel integrated graphics are so low power that it's a non issue. The TDP difference between a Xeon E3-1220 V3 and 1225 V3, the former of which lacks an IGP, is only 4 watts.

What you want to pay attention to is the CPU itself, because its power consumption is an order of magnitude greater. I'd say a 35W TDP CPU should be fine, maybe even 45W, not sure.

Regarding Iris, it looks to be included in the R-suffix Haswell SKU's, but they are 65W.

http://ark.intel.com/products/family/75023/4th-Generation-Intel-Core-i7-Processors/desktop
-> 4765T 35W, possibly 4770T 45W

http://ark.intel.com/products/family/75024/4th-Generation-Intel-Core-i5-Processors/desktop
-> 4570T 35W, 4460T 35W

http://ark.intel.com/products/family/75025/desktop
-> 4130T 35W (HD4400), 4330T 35W

I guess you could also just downvolt and downclock a regular 84W i5 or i7 chip to limit its power consumption. Perhaps someone else can fill in.