• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

Low power Windows Server?

dgingeri

2[H]4U
Joined
Dec 5, 2004
Messages
2,830
I currently have a server that is doing file sharing, file virus scanning, backups, routing, DNS, DHCP, and a virtual switch. It's running on a Core i7 920 on an Asus P6T with 2 4 port network cards and a 3ware 9650 raid controller hooked to 4 750GB hard drives in RAID10 and 2 2TB drives in RAID1. The OS is Windows 2008 r2. (I got a free single license from being a college student and signing up for MS's Dreamspark program a few years ago.)

The bad thing is that this beast takes 200W of power. My little 550VA UPS doesn't hold it up long enough to shut down when the power goes down. It also generates a lot of heat that throws off my thermostat and keeps the furnace from heating the rest of the apartment properly. The living room is about 10 degrees hotter than the bedrooms. I'm hoping to reduce that power footprint somehow.

The big thing is I/O. I need a total of 2 x4 slots and a x8 slot to run the cards I have. I'm currently using a PCI video card with a passive cooler to keep my PCIe slots available.

I could potentially get rid of the network cards and just use a regular switch. That would certainly reduce my power footprint, considering each of these 4 port cards use more power than a cheap 8 port gigabit switch, but I was hoping to reduce the number of devices and just have each system plug directly into the "router" server like a big home router would do.

I've been wondering if an AMD A6 or A8, or even an A4, would be enough to handle this kind of a load. I have seen several FM1 and FM2 boards with slot arrangements that would work for me. The DNS and DHCP take pretty much nothing to run. They could run from an old 386 and still have room to spare. File serving doesn't take much more than that with only 2 users. The big things are antivirus scans and the virtual switch. Even going down from a Core i7 920 to an A6 would be a 65W drop in peak consumption, and I know the idle power consumption of an A6 would be significantly lower than the 920. Given the power rates in my area, that could save me about $10-20/month in power, paying for itself in about 1-2 years.

(Power is costly here, not because of the basic rates, but because of what Xcel calls "Electrical Commodity Adjustment" which is more than 60% of my bill these days. We also have in place a law that doubles or triples a person's electric rates if they go over a certain amount of consumption during the summer, which I constantly do due to very poor insulation in my apartment. Fortunately, it doesn't double the ECA, but $350/month electric bills from May to September are very annoying, let me tell you.)

Has anyone here tried an A6 or A4 as a home server before? Think it would work?
 
Wow. I have a Synology DS712+ with 7 drives, a 3Com 48 port switch, Cisco ASA, Mikrotik router, and my AP and Hyper-V server all on one UPS and the max I see drawn is ~210 watts. Usually it's around 150.

Having that virtual switch doesn't make much sense TBH. I also have a core i3 in my Hyper V server. I find that the VMs usually need more RAM and IO than they need CPU.

The Synologys can do DNS and DHCP as well. Really you could put all of those roles (except for the switching and routing) on a Synology NAS. Then you would just need a router with enough ports for everything or use a switch if it doesn't have enough ports.
 
It's hard to believe a 200 W draw is throwing your heater off that much. Get a fan and blow away from your thermostat or move the thermostat might be the easiest.
That being said, 200 Watts for what you describe does not sound bad at all. My guess is most of the power is sucked down by the drives. Exploring power-saving on the drives, replacing them with 'Green' drives, or switching to SSDs will probably provide the biggest drop in power consumed and heat generated.
 
It's hard to believe a 200 W draw is throwing your heater off that much.

It easily can. I have my computer (230 watt draw stated by my Kill-A-Watt, 6 hdds) setup in a 13x15 room with good insulation and wood floors. When the house is 68 degrees, that room gets up to 75 degrees WITH THE DOOR OPEN (via infrared). If a thermostat was in or near that room (as it may be in an apartment), I could easily see it completely screwing up the climate for the rest of the house.
 
My setup is fairly low power:
I grabbed a Dell C1100 off of ebay with 2x low voltage Xeon processors with 72GB of RAM for $550
Dual onboard intel nics
I installed 2x 256GB SSD for boot medium and connected the thing to a QNAP TS-419 loaded with 4x WD Red 3TB drives

My switch is a Cisco SG-300-20

Peak power usage for the entire setup is 280 watts and the entire setup will idle at under 100 watts.

That's very inexpensive considering the amount of processing power and I/O on tap.

And that's without me running the limited power profile in the BIOS.

230 watts for a single socket machine that is mostly idle is way too much.. My Intel core2quad extreme (normal desktop) with 6TB of storage idles at 130 watts!
 
While it may not handle all the cards, I have a HP N40L microserver that I'm running esxi on that's not breaking speed records, it's whisper quiet and runs fine.
 
To get under 200w you'll probably have to look at an atom based system with a motherboard that has built on everything, especially video. Video cards are real power beasts these days.
 
To get under 200w you'll probably have to look at an atom based system with a motherboard that has built on everything, especially video. Video cards are real power beasts these days.

Any "basic" GPU recommendations for minimum power consumption? My ESXi whitebox for example doesn't have onboard video...has a 5770 in it, it does nothing but sit headless in a closet, I can imagine I could save a few watts moving to a basic no frills card.
 
5770 is fairly low wattage when not performing 3D tasks. I think it'll consume around 30 watts. There are lower wattage cards available but you're probably only going to shave off another 20 watts max. So unless you can get the replacement card super cheap, or you pay crazy electric bills... you may want to look for other ways to save electricity.
 
Drop the NICs and pick up a switch, then upgrade the motherboard and cpu, you'll lose a lot of heat and power draw just by going with a newer cpu.

If your 3ware 9650 has a spindown feature, you should enable it.

What is your power supply? It might be running inefficiently if it's oversized.
 
I have had good luck with the AMD E-350 and E-450 microatx boards. Asus makes some nice boards with passive cooling, 6+ onboard SATA ports, USB 3.0, and one X4 slot (its x16 sized but listed as "x4 mode").
 
5770 is fairly low wattage when not performing 3D tasks. I think it'll consume around 30 watts. There are lower wattage cards available but you're probably only going to shave off another 20 watts max. So unless you can get the replacement card super cheap, or you pay crazy electric bills... you may want to look for other ways to save electricity.

Good point. I need to get a kill-a-watt so I can start measuring actual change. It's currently an AMD 8120, undervolted at stock speed, 32gb RAM, 8x 2TB green drives under idle or low load. I'm just trying to pinch a penny where I can.
 
That 8120 and motherboard combo is the problem.

Running all out you have a 125Watt CPU. Add the motherboard in and you have a 200+ watts right there.

Idle your still going to see 60-70 watts being used by that CPU alone.

Most of the modern i5- i7' s idle wattage is under 25 watts with the motherboard adding another 20 watts. Intel's i3T processors can idle at 5-8 watts!!! That's real close to what the Atom processors can do at idle.

Think about it. My C1100 with a dual socket motherboard and 2x low voltage Xenon processors uses less power than your motherboard and CPU combo.

None of the AMD desktop/server alternatives are as electrically efficient as the Intel offerings. I would have to agree with the AMD bobcat suggestion above, but the newest Atom processors have hyperthreading and a in order pipeline so they are similar in performance. AMD's jaguar stuff will be available next quarter so AMD should take back the crown for that market....but you need to decide what class of processor do you need. How much performance for how much power, for what cost?

The lowest power box I can image with the highest performace uses a intel i3 3240T processor with a SSD boot drive. All ethernet ports supporting 802.11z and my switch also supporting 802.11z. No Hardware RAID onboard.
As described that box should idle at less than 35 watts.

I'd keep my disk storage in a low power NAS. QNAP Synology...etc. Something linux based with either an Atom of Marvell CPU. Preferably I'd connect it via iSCSI, but if that wasn't an option I'd cheat and make another one of these: http://hardforum.com/showthread.php?t=1746574&highlight=
 
Last edited:
Any "basic" GPU recommendations for minimum power consumption? My ESXi whitebox for example doesn't have onboard video...has a 5770 in it, it does nothing but sit headless in a closet, I can imagine I could save a few watts moving to a basic no frills card.

Seems most video cards these days are >=1GB high performance dual slot with like 2+ fans on them, so best bet might be to try finding an old PCI or AGP one on ebay. There may be some newer ones too, but I'm not aware of any myself.

Actually upon a quick search I did find some that "look" lower performance, such as these:

http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=5727378&CatId=318
http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=2257500&CatId=2306

I suppose the lack of fan is indication that it does not draw as much power. I don't know why they rate video cards this way but the wattage requirement is based on the whole system and not just the card, so not sure how much they allocate for the system.
 
Seems most video cards these days are >=1GB high performance dual slot with like 2+ fans on them, so best bet might be to try finding an old PCI or AGP one on ebay. There may be some newer ones too, but I'm not aware of any myself.

Actually upon a quick search I did find some that "look" lower performance, such as these:

http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=5727378&CatId=318
http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=2257500&CatId=2306

I suppose the lack of fan is indication that it does not draw as much power. I don't know why they rate video cards this way but the wattage requirement is based on the whole system and not just the card, so not sure how much they allocate for the system.

I've found the PCIe GF 210 to use 5w idle, and 10w under 3d load - probably can't ask for much better than that. Passive would be great, less moving parts to fail over time/make noise.

@Mackintire - I do really agree that the AMD 8 core/mainboard is eating power. It was the cheapest way to make an ESXi whitebox with pci passthrough support. I figure the default voltage being 1.36 on my CPU, down to 1.1 it should've at least knocked a few watts off. I only undervolted it because it would thermal throttle full load stock cooler...go figure.

Edit: I guess I should include that I run my router, NAS and other little servers off of this box, so replacing it with an atom wouldn't do it justice. HOWEVER, I picked up an A10-5800K on a sweet deal and that appears to use significantly less power than the 8120, and supports IOMMU.
 
Last edited:
the new intel atom NAS' plus a gigabit switch have the hardware capability to do everything you want. and even a 2-bay NAS can have 4tb of space mirrored.

problem is, I don't know if any of the NAS companies have any software support for acting as a router. but the hardware is definitely powerful enough.
 
That would be great if I had 2 drives, I have 8 with the ability to expand up to as many as i want haha. I figure what I'm going to do for now is put that A10-5800k in to save some power then move to an intel based setup when money is abundant. There is no saving AMD and power usage.
 
If your switch support 802.11z the power consumption should be very low.

HP Procurve 1810-24G V2 supports 802.11z and can run as low as 3 watts! with most of the ports not in use.
 
Thanks for all the great comments.

I realize I never mentioned the video card on my box. I have already reduced that power draw as much as possible. I have a PCI Geforce 8400GS card that draws 10W at idle.

I have found a couple FM2 boards that fit what I need. Coupled with an A4-5300, it should do a lot for my power consumption and handle what I need. I found the old A4-3300 would not be able to handle it. The only reason the 5300 would handle it is because of the higher clock rate.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131882
http://www.newegg.com/Product/Product.aspx?Item=N82E16819113283

However, I am going to wait a bit before I buy the new setup. I just heard AMD is dropping Trinity prices soon. I'm not sure of the A4 will be one to be reduced, but every dollar counts, huh?
 
Swap the cpu for an L5530 or another L series xeon.
 
Swap the cpu for an L5530 or another L series xeon.

Sorry, I am not going to spend that much when I don't need near that much CPU horsepower. A non-server, dual core would work just fine. Both AMD desktop platforms seem to have the I/O I need.
 
Sorry, I am not going to spend that much when I don't need near that much CPU horsepower. A non-server, dual core would work just fine. Both AMD desktop platforms seem to have the I/O I need.

There's an ES on ebay for $100. That is a lot less than new cpu/mobo+tear down.

There are also L5520's for less than $50 as well...

It isn't going to get cheaper than that, bro.
 
I went with an Asrock AMD 970 board and an FX-4100, (more cache than the 4130) for $150. It's a full 90W below the Ci7 920 and P6T at idle with the same cards and drives. That will likely pay for itself in just this summer. (Funny thing, though, it would have been more if I had gone with an Athlon II X2 chip because the MB had $40 off if bought with a FX 4100, 4130, or 6100 processor. I guess Microcenter has some stock on those they want to get rid of. Considering the 4100 will sit at idle 99.99% of the time, it will have lower power consumption from any other chip at that price or lower. an IB would have had lower idle power, but at a considerably higher price.)

BTW, anyone want to buy a Core i7 920, Asus P6T, and 6GB of Corsair XMS DDR3-1600 for $250 shipped?
 
Last edited:
I call Shens on any power savings unless you can show us side by side killawatt pics. IMO, you paid a lot to downgrade. Those fx chips are turds, you also lost memory bandwidth as well.
 
1. memory bandwidth mean nothing to a router/DNS/DHCP/file server. It sits around at idle most of the time, and everything it does is limited by PCIe bandwidth, network link speed, and hard drive speed. I may end up with a little lower performance when it is doing AV scans on the stored files and running backups, but those are done while I'm at work anyway.

2. you can see power savings in many of the reviews of the FX series chips, as they have been measured with lower (barely, but lower) idle power consumption than SB chips. Sure, they have higher consumption when it use, but my server will barely see 5% CPU utilization at the worst.

notice here where the Core i7 920 shows 169W at idle with the 8150 showing 112W: http://www.hardocp.com/article/2011...150_desktop_performance_review/9#.UU-gPBzWTzM

I also bought a board with a chipset with lower power chipset, the 970. That should show where I saved power well enough, unless you don't consider HardOCP a credible source.
 
My OpenIndiana server runs right around 70w idle. That's with an quad Athlon II, not exactly the most efficient chip. Granted, I only have 4 drives running, but I think 70w is decent for what it is.
 
Back
Top