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Energy Efficient PCI-e NIC?
- Thread starter dealcorn
- Start date
Hmm... Given that the whole computer takes 100W and more, I doubt that a difference in 1 or less Watt would brake the Bank.
The preferred choice would be this.
http://www.newegg.com/Product/Produc...6833106135#top
😎
The preferred choice would be this.
http://www.newegg.com/Product/Produc...6833106135#top
😎
I am not clear how a wireless NIC supports a Fast Ethernet hardwired connection. A watt will not break the bank but over a 10 year service life the NPV of the local electric cost is about $28. Because politicians have kids who need to eat, I use $35 for planning purposes. If no one has looked at NIC power efficiency, that's the way it is.
I assumed that you are talking Wireless because you mentioned USB.
USB to USB transfer or USB to Ethernet wire disappeared as a functional solution long time ago.
BTW, it is possible to sound even more Dramatic. Currently human life expectancy in the World is going up, it might be that we will end with 100 year of computer usage per person. Then, the saving will be $280 per Century
😎
USB to USB transfer or USB to Ethernet wire disappeared as a functional solution long time ago.
BTW, it is possible to sound even more Dramatic. Currently human life expectancy in the World is going up, it might be that we will end with 100 year of computer usage per person. Then, the saving will be $280 per Century
😎
I measured a cheap USB2 Fast Ethernet adapter at 1.3 watts idle with no load. I suspect there is a more efficient PCI-e solution but if no one tests efficiency, I can not find it. As I see local ISP's, Fast Ethernet is about as good as it gets during the next 10 years.
The motherboard that the NIC will service has 4 general purpose Ethernet ports that operate at either 1Gb/sec or 2.5Gb/sec speed but not both. I have a segment I want to operate at 2.5Gb/sec during the wee hours while I sleep. That s can not happen if one port is dedicated to a 24/7 Fast Ethernet connection. The appliance will be reasonable quality with 1.35v ECC memory and BTRFS RAID 1 all around. Other than maintenance items such as a pair of 2.5" mechanical drives, the AC/DC power brick, and the case fan a 10 year home service life is reasonable with a properly grounded UPS power supply. If I put the question to my cardiologist, he should advice against looking much past 10 years. The silicone is willing but the flesh is weak. 10 years is the correct target service life.
The motherboard that the NIC will service has 4 general purpose Ethernet ports that operate at either 1Gb/sec or 2.5Gb/sec speed but not both. I have a segment I want to operate at 2.5Gb/sec during the wee hours while I sleep. That s can not happen if one port is dedicated to a 24/7 Fast Ethernet connection. The appliance will be reasonable quality with 1.35v ECC memory and BTRFS RAID 1 all around. Other than maintenance items such as a pair of 2.5" mechanical drives, the AC/DC power brick, and the case fan a 10 year home service life is reasonable with a properly grounded UPS power supply. If I put the question to my cardiologist, he should advice against looking much past 10 years. The silicone is willing but the flesh is weak. 10 years is the correct target service life.
azazel1024
Senior member
2.5Gbps? What motherboard and what NIC, as 2.5Gbps is not any kind of standard that I am aware of.
Still, this is squeezing a rock for blood here when you are talking a difference of, generally, fractions of a watt. Unless you are designing a space ship or probe, I think you should just be confident that just about anything you'll find is sub 2-watts and work from there.
The Intel Gigabit CT runs to 1.9w max draw. The newer Intel single port PCI-e NIC runs to something like 1w max draw, and that is gigabit. In fast ethernet mode, either probably consumes 10-30% less power.
Why not use one of the onboard ports instead?
As for 10 year service life...just depends on what you are doing with it. I know many an ancient server that is still in operation >>>10yrs after it was first brought up. It doesn't mean it really make sense to keep using the equipment, even though it does what it needs to. We are perhaps somewhat past wanting to replace equipment every few years because of improved power draw, but that isn't to say that might still not be the case.
A 30w draw isn't much, but as you indicated, a 1w draw over 10 years at your electric rates is $28. If equipment continues to improve, in 5 years, a similar spec of equipment might draw 8-10w and could save >$500 over the 5 year balance of that 10 year planned operational life time.
My current server draws ~22w at idle (where it spends 97% of its life while awake and even the 3% it doesn't, it is generally only drawing 30-40w) 18/7 and just 1.8w the other 6 hours of the day in S3/sleep. It isn't much and at my current electric rates where I live, that is ~$20 per year. Or $200 over 10 years. Beyond improvements in performance, I know electric rates are only likely to go up. In another 3-5 years, I could probably drop $150 for a basic upgrade that might cut power consumption in half, between a better PSU, a new motherboard and processor and earn back a good chunk in electrical savings over what the current machine does. The extra capability of the machine would be some very nice icing on top of the power savings.
Still, this is squeezing a rock for blood here when you are talking a difference of, generally, fractions of a watt. Unless you are designing a space ship or probe, I think you should just be confident that just about anything you'll find is sub 2-watts and work from there.
The Intel Gigabit CT runs to 1.9w max draw. The newer Intel single port PCI-e NIC runs to something like 1w max draw, and that is gigabit. In fast ethernet mode, either probably consumes 10-30% less power.
Why not use one of the onboard ports instead?
As for 10 year service life...just depends on what you are doing with it. I know many an ancient server that is still in operation >>>10yrs after it was first brought up. It doesn't mean it really make sense to keep using the equipment, even though it does what it needs to. We are perhaps somewhat past wanting to replace equipment every few years because of improved power draw, but that isn't to say that might still not be the case.
A 30w draw isn't much, but as you indicated, a 1w draw over 10 years at your electric rates is $28. If equipment continues to improve, in 5 years, a similar spec of equipment might draw 8-10w and could save >$500 over the 5 year balance of that 10 year planned operational life time.
My current server draws ~22w at idle (where it spends 97% of its life while awake and even the 3% it doesn't, it is generally only drawing 30-40w) 18/7 and just 1.8w the other 6 hours of the day in S3/sleep. It isn't much and at my current electric rates where I live, that is ~$20 per year. Or $200 over 10 years. Beyond improvements in performance, I know electric rates are only likely to go up. In another 3-5 years, I could probably drop $150 for a basic upgrade that might cut power consumption in half, between a better PSU, a new motherboard and processor and earn back a good chunk in electrical savings over what the current machine does. The extra capability of the machine would be some very nice icing on top of the power savings.
serpretetsky
Senior member
you are attempting to cut down on 28$ over 10 years? Is that right? Have you considered using a laptop that already has ethernet built in?
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