So word is the C41 will not be wireless. The HR44 will be capable of wireless streaming, but the initial client will still be wired. I would imagine a future client will be wireless when they iron out any bugs...C41W anyone 
HR34 vs. HR44
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So word is the C41 will not be wireless. The HR44 will be capable of wireless streaming, but the initial client will still be wired. I would imagine a future client will be wireless when they iron out any bugs...C41W anyone
Crap. The C41 is streaming wireless at our warehouse. 1 wired, 2 wireless. We've been told wired is preferred and only install wireless if customers tv location would be a difficult install via coax. Pretty sure wireless is a pointless method IMO though. I have always believed a wired ANYTHING is better than wireless
Regardless which cooling method the receiver is using, if you enclose it in a cabinet with poor or no ventilation it will overheat!
Another major factor in cooling any system is how well it was designed in first place. My present Dish 722 overheats if we breathe [h=1][/h] too much. In 3 weeks I am scheduled to switch to Directv so hopefully that problem will be solved. Who knows, maybe by then I will get the HR44.
The logic on this statement doesn't really work. A power supply that is 80% efficient does dissipate the remainder of the power as heat, that part is correct. But there is no real correlation between the PS efficiency and it's contribution to the total heat output. That 20% efficiency loss due to heat could easy account for 75+% of the total heat output. That's just an arbitrary example but I'm fairly confidant in saying that the PS produced a majority of the heat inside the unit and by moving it outside the box all that heat is then removed. Couple that change with a quality heat pipe/sink combination on CPU and you can effectively dissipate a lot of heat. You have to imagine that DirecTV put a lot of time and effort into the redesign and its not like people were crying out for an external PS, so if they moved it and went with a fan-less design they probably feel pretty comfortable with the change.
Maybe I'm an optimist, but I have high hopes for the new design.
As an EE designing power supplies for over 20 years, my statements were based on basic thermodynamics and not a hunch. The correlation between the power supply efficiency and the heat dissipated in the power supply vs. the heat dissipated in the rest of the system is directly proportional.
First of all let me say that I respect your experience and state that I'm not trying to argue for the sake of arguing. While you obviously seem educated on what you are talking about I think you are still missing one point that I'll address at the bottom.
This is completely correct, as the efficiency of a PS goes down or its total power output goes up it will produce more heat and therefor contribute more heat to the system as a whole.
But when you said:
You don't have all of the information about the system to make that statement. It would be like saying a 5g block makes up 20% of the mass of a widget. Unless you have all the information about the widget it would be impossible to know what percentage of the widget a 5g block would be. If the widget were 10g then a 5g block would account for 50% of the total mass, if the widget were 500g then it would only be 1% of the total.
When stating that the 20% power loss of the power supply due to heat accounts for only 20% of the total system heat output you don't have enough information; you would first have to know the efficiency/heat loss of the total system. With a complex system like a HD-DVR there are many contributing factors. The CPU, the Graphics Chip, other IC's like the Broadband Controller, the WiFi Radio, other voltage regulators, even simple resistors all produce heat. Without knowing how much heat all of those components contribute it is mathematically impossible to say what percentage the power supply alone is responsible for.
Personally, I would suspect that an internal power supply would have contributed more the 50% of the total heat to the system. Back in the early days of desktop computers, before there were fans on CPU heatsinks there were still fans in the power supplies. And modern smartphones have extremely powerful CPU's that run fine in a sealed enclosure without any sort of a heatsink.
So again maybe I'm just being an optimist because I really want to love the new HR44 when I get one, but until we have some real data to work with it will be hard to do more then guess at its reliability.
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Just to note that it really depends on the architecture of the CPU being used. The smaller the die size, the less power consumption and the less heat it produces. A lot of people used to believe clock cycles were the shizznit when it came to measuring CPU performance. That is no longer the case and is quite evident in Intel's latest marketing of Core line of CPUs. You hardly see a peep about clock cycles (that GHz commonly seen on older CPUs)...only the model numbers nowadays. Even then, you'll see lower clock cycles with more efficient architecures being employed meaning more processing is done in each cycle so you don't need so many to perform the same things
Anyhoo...just wanted to throw out there that a heatsink may be more than adequate depending on whatever CPU is being utilized in the newer 44 Of course, other components of the board will also produce heat....voltage regulator and controller chips.....heat pipes are pretty efficient at sucking away heat if they're configured correctly.
Personally, I wouldn't mind seeing one melt just for the heckuvit....as long as there was no collateral damage!!
Anyhoo...just wanted to throw out there that a heatsink may be more than adequate depending on whatever CPU is being utilized in the newer 44
Of course, other components of the board will also produce heat....voltage regulator and controller chips.....heat pipes are pretty efficient at sucking away heat if they're configured correctly.Personally, I wouldn't mind seeing one melt just for the heckuvit....as long as there was no collateral damage!!
Well put! Its nice to see someone else share in my optimism. And as far watching one melt down, well who doesn't like to watch something burn!
Just had a HR44 installed yesterday, it is faster at everything than my old H23. Since the receiver is smaller and went into the same space there is a lot more room for airflow. The unit has been powered on and operating for 5 hours this morning and I just checked the internal temperature, it is 115 degrees. House temperature is 72. The power supply box is just barely warm to the touch.
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Well put! Its nice to see someone else share in my optimism. And as far watching one melt down, well who doesn't like to watch something burn!
Some men just want to watch the world burn
Umm.. For what its worth, the HR44 does have a fan.. It's just not always on... It's designated as an "emergency cooling fan"..
Mine has never come on that I know of, and I have it in a semi-enclosed space (due to the baby can reach it, and he LOVES tech stuff)
Mine has never come on that I know of, and I have it in a semi-enclosed space (due to the baby can reach it, and he LOVES tech stuff)
Smaller with external power adapter
Faster, significantly
Better client performance
Wireless CCK built in, but no wireless clients to date (possible future)
Optical/Coax audio instead of just coax
New RC71 Remote with new RF coding (not backward compatible in RF)
Otherwise not much difference. Faster, better physical box design, wifi if you don't want a wired CCK.
A wired vs wireless question so does hr44 wireless mean u don't have to hardwire the internet to it? And if so if u wanted u could run wired line to it right? Thanks.
I am so close to dropping cable and going to Dtv but waiting now for hr44 to be available in Johnstown pa I'm 1.5 hours east of pgh.... I hope I can get this soon. 3 TVs only and I can hardwire the internet if needed to one of 2 TVs. Thanks
I am so close to dropping cable and going to Dtv but waiting now for hr44 to be available in Johnstown pa I'm 1.5 hours east of pgh.... I hope I can get this soon. 3 TVs only and I can hardwire the internet if needed to one of 2 TVs. Thanks
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