I'll put forward a setup, maybe it can get you started tweaking it or discussion. I'll point out now that I've used AMD APUs mainly because there is nothing that can compete with them for video decoding on a price/performance scale but I'm sure you can use an i5-2500 or higher to get the same performance.
For a
Mini-ITX build:
$109 -
LIAN LI PC-Q08B Black Aluminum Mini-ITX Tower Computer Case - Doesn't have the, (IMHO), ugly 5.25" bays on the side like their other small cases but does have an annoying blue LED in the fan - which I'm quite sure could be introduced to Mr Cutter or replaced entirely. USB 3.0 ports, six 3.5" HDD bays, one 2.5" bay, takes a standard PSU,
$139 -
ASUS F1A75-I Deluxe FM1 AMD A75 (Hudson D3) HDMI SATA 6Gb/s USB 3.0 Mini ITX AMD Motherboard - WiFi 802.11b/g/n, HDMI, 7.1 audio, USB3, QWERTY remote, BlueTooth, up to 32GB of DDR3 - this covers most of the list of requirements.
$139 -
AMD A8-3870K Unlocked Llano 3.0GHz Socket FM1 100W Quad-Core Desktop APU (CPU + GPU) with DirectX 11 Graphic AMD Radeon HD 6550D - The locked A3850 is $10 cheaper but why bother?
$39 -
Kingston HyperX 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) - You can get cheaper RAM but Kingston is well known and reliable.
$69 -
PC Power and Cooling Silencer MK III 400W Modular 80PLUS Bronze Power Supply - Again, you can get a cheaper PSU, (and 400W is overkill for this build), but PPC make good quality PSUs.
$57 -
ASUS Black 12X BD-ROM 16X DVD-ROM 48X CD-ROM SATA Internal Blu-ray Drive Model BC-12B1ST/BLK/B/AS - Supposedly one of, if not, the quietest BluRay combo drives around.
So that's $552 of your hard-earned money spent.
You could save money by using the following:
$99 -
Fractal Design Arc Mini Black High Performance PC Computer Case w/ USB 3.0 - I have to say that I particular like Fractal Designs cases.
$64 -
ASRock A75M-HVS FM1 AMD A75 (Hudson D3) HDMI SATA 6Gb/s USB 3.0 Micro ATX - After Gigabyte, ASRock would be my personal second choice even though they are a division of ASUS they seem to make boards that are more reliable than their parent company, at least in my experience.
Total now: $467
But you need to add a WiFi dongle/card - $15-$30 depending on brand.
I haven't mentioned TV Tuner cards because you didn't mention single/dual tuner, just DVB-T or Hybrid or DVB-T/Ananlog/Cable. Also the US standard is different from here so I can't recommend anything specific but
Hauppauge and
AverMedia are usually reliable, (although even they have put out some dogs).
But I will say you don't need it to be a PCI(e) card, USB 2.0 is fine for Dual channel HD DVB-t reception. I use a
TinyTwin together with
DNTV Scheduler Pro which is a commercial fork of
TV Scheduler Pro, (now open source). I'm not sure whether TVSP will work in an ATSC situation, (you may need to make your own stations xml file up), but I can say that DNTV SP will happily capture two HD DVB-T broadcasts over USB 2.0 without a problem, (more programs if they happen to be on the same stream - I've had five programs from two streams recording simultaneously).
CPU load is approximately 15% while capturing, (Athlon II 235e @800Mhz), and I've used it on my Atom 270 netbook without any frame drops - the reason is, it's actually two programs: a java frontend running the web server/EPG etc, and a dedicated executable to do the capture.
PM me and I'll send you the IP so you can wander around in it, (change anything and I will kill you)
Anyway, something to think about/discuss/ignore.
Addendum: Here's a program that's almost identical that will work in the USA:
DV SchedulerFor a
Micro-ATX build:
$99 -
LIAN LI PC-A04B Black Aluminum MicroATX Mini Tower or
$109 -
Fractal Design Define Mini Black Micro ATX Silent PC Computer Case w/ USB 3.0$84 -
ASUS F1A75-M LE FM1 AMD A75 (Hudson D3) SATA 6Gb/s USB 3.0 Micro ATXCPU, PSU, RAM & Combo drive as above plus you need a WiFI dongle/card.
Or maybe you'd like to go a little
retro