Low power PC + multi pci slots + no windows tax = £296.31 @ Very PC - HotUKDeals
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I found this PC while looking for a low power PC to use as a mythtv backend.

While there are more powerful PCs for the money and cheaper too, I don't think you'll find one with as good a ratio of pci slots to watts.

This is important to me, and probably to others, as I don't want a 200w device running 24/7. At 40W it will cost around £3/month to run 24/7 compared to £20 for a 250w device.

With dual DVB-T and dual DVB-S2 tuners you could have up to 8 tuners, which is more than enough for most people.

To get the 287.51 price you need to remove windows and antivirus.
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#1
You Again !!?!?!? ;-) Sic
#2
kevingattaca2
You Again !!?!?!? ;-) Sic


Eh?
#3
wasn't this posted a few days ago ??
#4
Yes, I posted it but it was withdrawn by the moderators for some reason, so I reposted it as it might be useful to someone.

With such a good power to performance ratio I'd think that mythtv or HTPC buyers would want to look at this.
#5
PCI-e x16 and x1 and 2x PCI All expansion sockets require low profile cards.


doesn't sound like that many pci slots.

plus it's expensive for what it is,
#6
Just out of curiosity where do you get the 40W statement from. The lowest powered AMD CPU uses 45W and thats before the rest of the kit is included?
#7
Link takes me to a unit costing £384 inc vat, and for that kind of money you have lots and lots of options.
#8
loopie
Link takes me to a unit costing £384 inc vat, and for that kind of money you have lots and lots of options.


OP does say price requires Windows and Anti Virus to be removed to achieve.
#9
You need to add the postage to that price.
#10
Pepp77
Just out of curiosity where do you get the 40W statement from. The lowest powered AMD CPU uses 45W and thats before the rest of the kit is included?


From their webpage (can't direct link it) but choose Eco/Efficiency link

Power Consumption
Power Consumption: 39.26 W Average power in operation (34.57W Idle)
Total Estimated Consumption: 127.27 kWh/yr
CO2 Operational: 68.34 Kg/yr
Economy
Green IT Foundation Energy Efficiency rating of B ie. over 20% better than Energy Star 5, this machine typically emits over 45% less operational CO2 than an equivalent machine rated to Energy Star 4.
Ecology
Achieved, by making the machine an a smaller form factor instead of reduces input carbon and electronic waste. Design is majority metal for very high recyclability
Performance
Achieved, dual core, up to 2.7GHz. It also has long operational life projections with solid state capacitors and selected high grade components.
#11
lmaolmao
doesn't sound like that many pci slots.

plus it's expensive for what it is,


I said that you can find more PC for less in the deal.

What I don't think you can find is 4 PCI slots (2PCI, 2PCIe) in a unit that runs at around 40W. 4 slots allows you to populate it with multiple DVB tuners, ideal for a mythtv backend.

It's a niche bit of kit, but if you need that combination of specifications it's a good solution.

Don't vote cold if you don't understand what it would be good for.
#12
zipgun
You need to add the postage to that price.


Thanks for reminding, done.
#13
Voted hot. You've clearly done your homework so if someone is looking for this spec then it's a good price.
#14
I think someone looking for a power efficient mythTV backend would be better off buying the ITX kit themselves... That would probably come in at around £200-£250 depending on spec chosen.
#15
LouO
What I don't think you can find is 4 PCI slots (2PCI, 2PCIe) in a unit that runs at around 40W. 4 slots allows you to populate it with multiple DVB tuners, ideal for a mythtv backend.


I use a dual tuner Hauppauge Nova-T-500 in my MythTV box (along with a plain single tuner Nova-T). Internally, it's two USB tuners attached to a VIA USB-PCI bridge. External USB tuners also work, and MythTV incorporates 'virtual tuners' allowing you to record multiple channels simultaneously from the same physical tuner, providing those channels are all on the same DVB multiplex. If we're talking Freeview, then that means you only need a maximum of six physical tuners (e.g. three Nova-T-500s) to record everything, all the time.
#16
Surely a Revo with several usb tv tuners would cost less, use less power, be a smaller form-factor & look nicer too?
#17
TehJumpingJawa
Surely a Revo with several usb tv tuners would cost less, use less power, be a smaller form-factor & look nicer too?


I'm not a fan of USB tuners, I prefer PCI adapters. I've had a lot of problems with USB devices.

In my opnion the Revo probably isn't powerful enough to handle being a myth backend, I doubt it'd stand up to multiple recordings.

Now as a myth frontend, it's fantastic.
#18
cowbutt
I use a dual tuner Hauppauge Nova-T-500 in my MythTV box (along with a plain single tuner Nova-T). Internally, it's two USB tuners attached to a VIA USB-PCI bridge. External USB tuners also work, and MythTV incorporates 'virtual tuners' allowing you to record multiple channels simultaneously from the same physical tuner, providing those channels are all on the same DVB multiplex. If we're talking Freeview, then that means you only need a maximum of six physical tuners (e.g. three Nova-T-500s) to record everything, all the time.


I'm not a fan of the Nova-T-500, the problems with the firmware not loading are frustrating.

I much prefer DVB-S (or S2) receivers, I get a better picture and can get BBC HD too.
#19
LouO
I'm not a fan of the Nova-T-500, the problems with the firmware not loading are frustrating.


Has always Just Flippin' Worked, here, on Fedora 8 (yes, I need to upgrade!).

Are you using the 1.20 firmware? (http://www.wi-bw.tfh-wildau.de/~pboettch/home/files/dvb-usb-dib0700-1.20.fw). Note that if you have firmware already loaded, you need to power cycle the machine for the driver to load firmware again.
#20
TehJumpingJawa
Surely a Revo with several usb tv tuners would cost less, use less power, be a smaller form-factor & look nicer too?


I am not sure that the Revo would have enough grunt to handle multiple tuners. I was browsing some recently and the published specs for all the tuners that I checked indicated that they need more CPU power. Perhaps someone who is actually running tuners on a Revo could comment. It would wind up looking like a starfish.:p

I agree with the OP that this is probably a reasonable piece of kit if you want a multi-tuner setup, but I would probably go for something less compact, a lot cheaper and keep it out of the viewing room.
#21
bytemaster
I am not sure that the Revo would have enough grunt to handle multiple tuners. I was browsing some recently and the published specs for all the tuners that I checked indicated that they need more CPU power. Perhaps someone who is actually running tuners on a Revo could comment. It would wind up looking like a starfish.:p

I agree with the OP that this is probably a reasonable piece of kit if you want a multi-tuner setup, but I would probably go for something less compact, a lot cheaper and keep it out of the viewing room.


The key selling point for this device, in my mind, and the fact that a lot of people are missing, is that it runs at around 40W. Given that my backend is also my NAS it's on pretty much 24/7.

40W over a month of 24/7 usage is around £3 in electricity. 200W is around £15.

Using something like this will save me around £150 a year. I think that makes it a good deal.

I should add that my myth backend lives in the garage, next to the satellite multi-switch, so living room aesthetics aren't an issue. I'm sure many other myth users have a similar wife friendly non-living room policy :)
#22
bytemaster
I am not sure that the Revo would have enough grunt to handle multiple tuners. I was browsing some recently and the published specs for all the tuners that I checked indicated that they need more CPU power. Perhaps someone who is actually running tuners on a Revo could comment. It would wind up looking like a starfish.:p

I agree with the OP that this is probably a reasonable piece of kit if you want a multi-tuner setup, but I would probably go for something less compact, a lot cheaper and keep it out of the viewing room.


Hope you're wrong. I've just bought a single core Revo for that purpose! Gets delivered today. I have bought a Nova-T single Tuner USB .....thing to use with it. I think it requires 733Mhz, so I think the Revo should be enough. Plan to install mythbuntu.

I can't see me needing to record more than two channels at once, so two quick questions:-

1) Someone mentioned something a bout software tuners. Even though I've only got one physical tuner, should I be able to record two things at once?

2) In terms of strain on the CPU, would I be better with one physical tuner and rely of the software tuner to record two programmes. Or would I be better off with 2 physical tuners?
#23
sinkyboy2000
Hope you're wrong. I've just bought a single core Revo for that purpose! Gets delivered today. I have bought a Nova-T single Tuner USB .....thing to use with it. I think it requires 733Mhz, so I think the Revo should be enough. Plan to install mythbuntu.

I can't see me needing to record more than two channels at once, so two quick questions:-

1) Someone mentioned something a bout software tuners. Even though I've only got one physical tuner, should I be able to record two things at once?

2) In terms of strain on the CPU, would I be better with one physical tuner and rely of the software tuner to record two programmes. Or would I be better off with 2 physical tuners?


The 'virtual tuner' relies on the fact that a single DVB-T multiplex holds multiple channels. So, if for example, the USB tuner is tuned to Mux1 (the BBC mux), it can record any of the services currently playing.

If you want to record 2 programs on 2 different muxes, you need 2 physical tuners, so to record BBC1 and ITV1 you'd need 2 USB devices. To record BBC1 and BBC2 you'd only need 1 as they're on the same mux. Have a look here here http://www.ukfree.tv/transmittersmenu.php to see what services (channels) are on what muxes, this will tell you what you can and can't record at the same time.

Due to the way the channels line up you'll probably find you need 2 physical devices, and I have doubts that the revo will be able to handle two tuners and all the other things that are going on.
#24
These are over-priced pieces of kit that rely on the fact they're touted as being "Green" to sell them.

If you're building a MythTV backend, you should know enough to buy the relevant kit for less than this.
If you're looking for a low-power (relative) machine, buy a Revo or something similar.
#25
I would think an acer revo would have enough power to act as a mythtv backend. I have a dual tuner WinTV-Nova-500 (which is effectively a pci to usb adaptor and 2 usb tuners) in my 7 year old athlon recording programs. It might struggle if you want it to act as a frontend too. The amount of processing required to record dvb-t is very little, it just copies the transport stream to disk. I imagine playback is a lot more demanding.

While you could record every freeview channel with 6 tuners, in reality you would never want too, there is a lot of rubbish broadcast. I've never had a problem with two. The beauty of mythtv and other similar pieces of software, is it can find the repeats (often shown in the middle of the night) and record those instead if both tuners are already being used.

Also, most tv's have freeview built in now, so if you're watching live tv its probably best to use that then you can always record two different channels.
#26
[QUOTE=bytemaster]I am not sure that the Revo would have enough grunt to handle multiple tuners./QUOTE]

I suspect you'll be fine; recording DVB is pretty low-end. I used to use a Celeron 1.7GHz from 2002 to handle 3 physical/6 virtual tuners. The only time there's a problem is if I am archiving to DVD at the same time, and video requantization to fit the programme onto the DVD is required.
#27
anguston
While you could record every freeview channel with 6 tuners, in reality you would never want too, there is a lot of rubbish broadcast. I've never had a problem with two. The beauty of mythtv and other similar pieces of software, is it can find the repeats (often shown in the middle of the night) and record those instead if both tuners are already being used.


Agreed. If I didn't already have a Nova-T in my MythTV box (I started with two single tuner Nova-Ts), I'd probably make do with the two tuners on a single Nova-T-500. The occasions where the 5th and 6th virtual tuners are "required" are quite rare.
#28
Anyone know what motherboard they are using on this GreenPC?
#29
anguston
I would think an acer revo would have enough power to act as a mythtv backend. I have a dual tuner WinTV-Nova-500 (which is effectively a pci to usb adaptor and 2 usb tuners) in my 7 year old athlon recording programs. It might struggle if you want it to act as a frontend too. The amount of processing required to record dvb-t is very little, it just copies the transport stream to disk. I imagine playback is a lot more demanding.

While you could record every freeview channel with 6 tuners, in reality you would never want too, there is a lot of rubbish broadcast. I've never had a problem with two. The beauty of mythtv and other similar pieces of software, is it can find the repeats (often shown in the middle of the night) and record those instead if both tuners are already being used.

Also, most tv's have freeview built in now, so if you're watching live tv its probably best to use that then you can always record two different channels.



Ah well - was sort of hoping to use it as a front end too! Looks like I might have wasted £130 as I'm not sure I'll have much of a use for it other wise.

No way of overclocking I take it!?
#30
skykid3
Anyone know what motherboard they are using on this GreenPC?


An ATI Radeon 3100 equates to a 780V motherboard (according to Wikipedia).
#31
amdavies
An ATI Radeon 3100 equates to a 780V motherboard (according to Wikipedia).


Thanks :)

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