Gigabyte - i3, mini ITX build



  • What do you think about following build?

    • Motherboard: Gigabyte, GA-Z170N-WIFI  (includes 2x intel Gbe LANs)
    • i3-7100T, Kabylake, planning to underclock to 2.4 for saving power
    • 8 GB RAM, 2133
    • 120GB SSD Samsung, (hard to find any smaller
    • Obsidian Series® 250D Mini ITX PC Case

    The TDP of the i3 is 35W only, but I hope to get that down even more by reducing the clockspeed to 2.4



  • Sounds ok except that the i3-7100T is not on the CPU support list for that board (yet).
    http://www.gigabyte.us/Motherboard/GA-Z170N-WIFI-rev-10#support-cpu



  • Hi AndyC, thanks for pointing that out. Didn't even think of it to check that, but the revision 2. of that board seems to support the i3-7100T cpu.
    http://www.gigabyte.us/Motherboard/GA-Z170N-WIFI-rev-20#support-cpu



  • @Wim:

    Hi AndyC, thanks for pointing that out. Didn't even think of it to check that, but the revision 2. of that board seems to support the i3-7100T cpu.
    http://www.gigabyte.us/Motherboard/GA-Z170N-WIFI-rev-20#support-cpu

    Oh, that's great! I've just seen the rev. 1 listed in my favourite shops. Make sure you get the rev 2. then, and happy building!



  • Why not just go for the GA-Z270N-WIFI?  (Or even the GA-H270N-WIFI)?  The newer chipset shouldn't be much more expensive, and there's little reason to get the "Z270" over the H270 with a non-K processor.  As well, you won't have to be concerned about which rev motherboard you picked up as the Z/H270 supports 7 series processors out of the box.

    At least on the H/Z270 version, the wifi/BT support is via a M.2 card that freebsd (and therefore pfsense) doesn't support - so you can physically remove the card and leave the slot empty.  This should (very) slightly reduce power/heat.



  • Is the Z170N-WIFI ver 2 difference from ver 1 only the out of the box support for 7 gen cpu? If so then I can just flash F20c bios.



  • The z270 looks a bit better indeed. The wifi modules look to be the same on both z170 and z270… however, maybe I missed something? The board is a bit more price though...

    The i3-7100T is indeed a non-K model, however it allows for underclocking to 2.4 Ghz. This will bring the powerconsumption down a bit. This is why I need a Z170 or better and not a B150 / h170



  • You can't LOWER the multiplier on an H270?  Are you sure?  (I'm not… which is why I'm asking...)

    However, you might find that there's little value in underclocking to reduce power in a modern processor.  As long as you don't disable intel's speedstep (or whatever it's called these days), the processor will lower it's own clock (and voltage) when the extra power isn't needed.  When the power IS needed, an underclocked processor will take longer to complete the task (and thereby might be using more power overall to do it.)

    Take care
    Gary



  • I actuzlly have no idea either if the options would be there for a H-version… but I assumed since it doesn't provide the options to overclock, I think this option is just absent in general.

    It would be good to know what differnce it makes running on the full 3.4 vs 2.4.
    I've googled for quite some time, but seems this hasn't been checked anywhere.
    It must be added for a reason, why else would it be made available?
    Maybe there's somebody out here who can actually test it?



  • @Wim:

    I actuzlly have no idea either if the options would be there for a H-version… but I assumed since it doesn't provide the options to overclock, I think this option is just absent in general.

    It would be good to know what differnce it makes running on the full 3.4 vs 2.4.
    I've googled for quite some time, but seems this hasn't been checked anywhere.
    It must be added for a reason, why else would it be made available?
    Maybe there's somebody out here who can actually test it?

    If it's idle it'll clock down to 800MHz or somesuch automatically. The only reason to force a lower maximum clock speed at the platform level is for TDP management reasons (like, you're making a tablet and if you run the cpu to max you'll burn someone). At the OS level you can specify a maximum frequency using powerd if you really want to, but as someone already pointed out, it's generally more power efficient to finish a task quickly and throttle back to minimum than to run at a reduced maximum speed for a longer period of time.



  • Actually, is Kaby Lake supported already by PfSense (being based FreeBSD 10.3 …)  ?



  • Ordered build

    • Case: Antec ISK110 VESA
    • MB: Gigabyte, GA-H170-WIFI
    • CPU: i3-6100T
    • 8GB 2133Mhz
    • SSD