Low power consumption HTPC
934824
Nicely working with very low power consumption. Can even play some low requiring games such as LOL, Warcraft 3 and Castle Crashers with Xbox360 Controller working.

The problem I've got is the USB and earphone connectors on the front panel. They are a bit out of their original place, which makes the devices more difficult to plugin than they should be.
4958211
works great for openelec, low power and runs kodi great
1890922
your board have to be able to handle this processor, 95 watts board is not sufficient
4334518
Working very well for older HTPC. Plug and play in 1 minute with half that time being getting to the vga output behind the PC.
597505
Bought to use in a Plex HTPC build.  Handles transcoding to multiple machines in 1080p without problems, system draws 20W at idle and 50W at full load, very happy with the results.
482556
This is being used in an HTPC and works wonderfully...silent!!!!
67870
Good speed, low cost, makes great boot drive for just the OS on a HTPC.
Very small form factor, I installed it with some double sided tape to the inside edge of the case.
1604291
Both this because of the price and mainly because my Radeon 6400 died, it's in my HTPC and it's working like a charm so far.
3445624
Works like a charm, silent (of course). The heatsink is a little big, but hey there's no fan and it's in a HTPC so it's perfect for what I need it for
3581473
This is the best choice I could have made concerning my HTPC setup.  Buy it!  I host all my video content on my main PC, along with streams from Play On, so I have zero need for internal memory.  I purchased 2gb of ram (works well enough, no issues or lag at all) and a 8gb High Speed SD card.  Yes, forget a hard drive, you won't need it if you use this solely as an XBMC box through OpenElec.

Speaking of - Use OpenElec!  Don't try to install windows or ubuntu or any other nonsense on this.  Openelec takes minimal resources and will perform top-notch.  If you want a computer that can play games and other stuff in addition to playing your media... Don't buy this.  The processor is not a great one for that (think running Windows on a Netbook... sub-par)  You will need to suck it up and spend a few hundred bucks if this is what your want because you will be disappointed in this.

Use OpenElec.  Load up OpenElec installer on a thumb drive (you'll need to modify your BIOS to boot from it) then install it on your SD card.  Setup is fairly simple if you know what you are doing.  And the skies the limit with customizing XBMC.  You know that Wii you never play anymore?  Buy a $3 bluetooth adapter and use the Wiimote as your remote.

You'll Love it.
1064431
I  picked one of these up to use as a HTPC. I am a Linux 'die-hard' and all my machines run Linux. I thought I'd give this a try. I runs very well. I run a Plex server w/a external WD hard drive connected via USB and it runs well. I have installed Kodi also and have had no issues with that either. I have run Hulu and Amazon videos with no problem. I noticed a slight 'skip' on Netflix from time to time, but that may be an issue of too high a resolution when streaming. No overheat issues as of yet. As soon as I got it, I upgraded to Windows 10 and have not had any issues with that at this time.
For the price on this PC, you cant go wrong !
1935811
Perfect if you want to use a USB key as a primary hard drive in a low power PC application. Solid state drives are expensive compared to USB drives, but if you want low power consumption you can use this cheap adapter + a USB key to run a PC using Ubuntu or other Linux distro. I paired this adapter with a OCZ 8GB Rally 2 USB 2.0 Dual Channel Flash Memory, which is one of the faster USB devices available in terms of both read and write speed.

It has been awesome in my new media server. The entire PC (which uses an Atom processor) consumes ~35W when running under steady load.
3832446
I got this to be a HTPC. For that purpose, it works great. I did not bother with the included keyboard/mouse. I stream from the web and my home network, wired. My own videos and Netflix feeds work fine on my 42" LG 1080P TV, everything scales nicely. It does not have a problem with the HD streams, which I was a little concerned about.
So far, I am pleased with this PC. Small, quiet and fills my needs nicely.

Update:

After having had this a couple of months. Thought I would give an update on this little pc. It has surprised me. I have streamed everything to my tv, from the web and on my network. No stuttering or audio problems.
I am using XBMC on it and it works great.

The size is perfect. I have it mounted behind the tv. No sounds from it and the lights on it are not bright.
3043390
For an HTPC, there isn't anything better. Mouse function is slow but other that that it takes care of all WMC tasks with ease.
2695322
Works great in my RV. Very low power consumption. Great picture and controls. Watching movies ant TV downloads on thumb drive is a bonus although only supports AVI files. Only negative is the sound but not all that bad. Plugged in a small portable battery powered speaker and sounds much better.
1254502
I started with a HTPC, but then found out about Tivo.  I was hooked from the moment I saw that my wife took to it like a fish to water (she's non-technical, and couldn't make my HTPC work)
970340
Heat and power consumption was my primary concern when I provisioned a couple of Supermicro 2U Twin (Squared) servers that allows for 4 dual-socket nodes (motherboards) within a 2U chassis. The E5620 was 2/3rds cheaper, but at 80W and only 4 cores, it couldn't match the L5640's 6 cores at 60W. Couple that with low-power SSD's and I think these servers are as green as one can get.