Im in the process of getting a Sandy Bridge processor for a HTPC. Its function is only HDTV recording and playback. No games. As the case is ventiladed only by 3x 14cm fans, and I want to keep things silent, Im considering getting a 35W CPU. However, how really efective is that advertized TPD? I would be disapointed to get a 35W CPU, wich is relatively expensive, and find out that its working at 55W or something. Any articles, review on the matter?
Anyway, here are my options, they are all sandy bridge:
TDP (thermal Design Power) is the maximum amount of power (heat) that the cooling system must be designed to dissipate. There are a number of ways to deal with this heat with active cooling being the most common. Just so you know there is other option in the Intel® Core™ i3-2100T which is also 35w processor.
Yeah, in the 35W realm, there is a i5 as well, but since the i5 is not quadcore, and I dont care about hyperthreading, and the pentium is below $90, it seemed like the best choice for a hptc focused solely on watching media content.
I do feel atracted to the 45W i7 quadcore, but the $400 price is a turn down.
I believe TDP does not refer to power consumption, but to the heat generated in terms of watts.
Technically, you are right. But it makes a reasonable high end estimate of the power consumption. Intel docs say the the TDP is power dissipated if every i/o pin on the CPU is used. And because of losses in the motherboard power regulator, it will probably come pretty close.
I have an OC'd Q6600 (stock TDP 90 watts). Based on actual measurements, at stock speed and voltage, it pulls 8 amps (96 watts from the PSU.
leandrodafont, it takes suprising like computer power to move video from a hard drive to a video screen. I was going to build a dedicated HTPC, but I found that the little WD TV Live does everything I need. The little box eats about 10 watts when it is running. Figure anoth 10 - 15 watts for a USB drive.