Reddit mentions of JETech Ultra-Slim 2.4G Wireless Keyboard for Windows (Black) - 2160

cheap af and has extremely long battery life

This should work perfect, tiny bit over budget but completely worth it and you can't really get much smaller than this without paying big money on the case. I own this case and it's fantastic - picture of it here for size (yes I know the floor needs a sweep lol!): https://i.imgur.com/fU3eb49.jpg

PCPartPicker part list / Price breakdown by merchant

Type|Item|Price

----|:----|:----
CPU | AMD - Ryzen 5 1600 3.2GHz 6-Core Processor | £175.19 @ Aria PC
Motherboard | Gigabyte - GA-AB350N-Gaming WIFI (rev. 1.0) Mini ITX AM4 Motherboard | £103.97 @ Ebuyer
Memory | G.Skill - Ripjaws 4 Series 16GB (2 x 8GB) DDR4-3000 Memory | £135.51 @ Amazon UK
Video Card | Zotac - GeForce GTX 1080 Ti 11GB Mini Video Card | £674.99 @ Ebuyer
Case | Silverstone - Sugo SG13B Mini ITX Tower Case | £39.95 @ Overclockers.co.uk
Power Supply | SeaSonic - FOCUS Plus Gold 550W 80+ Gold Certified Fully-Modular ATX Power Supply | £77.47 @ Amazon UK
Other | Noctua NF-F12 industrialPPC-3000 PWM | £21.95 @ Overclockers.co.uk
| Prices include shipping, taxes, rebates, and discounts |
| Total | £1229.03
| Generated by PCPartPicker 2017-11-16 12:16 GMT+0000 |

1600 and 1080TI is going to do great for 4K, with 16GB of RAM at high frequency which is good for Ryzen, full modular (v. important for this game) and gold PSU that's small enough to give a bit of space. The fact the 1080 TI is a mini version will be a big benefit for space.

I have this exact case (with an i5 6600K and GTX 970) and it's fantastic, and tiny - if I'm right it's the smallest case you can build a proper gaming PC in with apart from the really expensive custom made stuff like DANCase and MCase. Exact same dimensions as an A4 sheet of paper and at 7" tall (7.5" with the little rubber stub legs) it's about as tall as a can of beer or large smartphone; it's basically a shoe box but less deep and an inch or so taller. It only has room for one 3.5" HDD (or 2.5" HDD/SSDs) so be warned there, but also has a dedicated slot for an SSD tucked into the corner and I believe the motherboard has an m.2 slot for another one. My GPU is full sized but I did a budget version as a gift with a 1050 TI mini and the difference having a small GPU in there is great for space and cabling, but also for mitigating any heat issues and for if you ever need to take it out (a full sized one requires taking half the parts out before you can slide it out the front; a mini one you can just pop out of the slot and it will fit out the top immediately without need to remove anything else..

One issue I noticed recently though was in CPU demanding games like Total War: Warhammer or Civ VI that inside the case was getting way, way too hot - but switching to the mesh version of the front of the case and adding the case fans completely got rid of that... I left a RealTemp on and played TW:W for a good 3 hours and the hottest any one core got to at any point was 62c. The reason for this is that stagnant, warm air was building and building and building up near the front of the case with nowhere to go. Due to all the mesh on the back and sides though, the fan (acting as an intake) meant that any warm air now immediately gets pushed out all over the back and sides and has zero chance to build up or hide anywhere with cool air also constantly blasting the RAM, motherboard and back end of the GPU (which is great because 1080 TIs are supposed to be pretty hot). I also have this second case fan rigged onto the side mesh by the CPU using zip-ties, it's really thin which is important for this specific fan because space is extremely tight in the case, that said I bought both together than think the one at the front would have been fine - https://www.amazon.co.uk/gp/product/B009NQM7V2/ref=oh_aui_detailpage_o00_s01?ie=UTF8&psc=1

The case is only sold with the solid front or the mesh front - I was just lucky that I could switch over the case with the budget one I did as a gift (it's a G4560/1050 TI so heat won't be an issue there). So I would say make sure to get the mesh one which looks a lot better in person or on video than in pictures - quick vid with it here: https://www.youtube.com/watch?v=8ptbpKpObzs

Ignore PCPP saying the wraith stock cooler won't fit, I have a Noctua one that's about 30mm shorter and have a good 40-50mm of space above it due to the smaller 'SFX' rather than 'ATX' PSU (which also frees up space for the second case fan) on the side. See picture 12 here for the stock cooler in the case - https://pcpartpicker.com/b/jXfH99

You'll be able to fit the full case, mouse, all wires, gamepads and a mini keyboard in a backpack with ease. Mine doubles as a HTPC that along with the projector basically replaced my TV and apart from Civ/X-Com/TW type games (which this keyboard works excellently for) I always use a gamepad. If that's how you might be using it then this is a great little wireless keyboard for it at a really low cost - https://www.amazon.co.uk/gp/product/B0173QNVT0/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1

* Because there's no windows you don't need to worry about cable management etc much, just buy a bag of zip ties for a fiver and bundle them all together as tight as possible (the mini GPU is going to make this so much easier).

EDIT: I have the wrong PSU there (a full ATX one), this is the SFX one I have, only about £2 more - https://uk.pcpartpicker.com/product/vrH48d/silverstone-power-supply-sstsx500lg . A full ATX will fit in there but I'd recommend going SFX because it is situated near a lot of the mesh gives more room for the air being pushed by the CPU fan and case fan(s) to escape out the top and sides.

They are windows based is. You can get any USB keyboard (wired or wireless) and plug it in the USB port on the side.

I use this one in my truck. The keyboard is just the right size for the pocket above my head.

https://www.amazon.com/JETech-Ultra-Slim-Wireless-Keyboard-Windows/dp/B0173QNVT0/ref=aw_pd_cart_vw_crc_1_2?_encoding=UTF8&pd_rd_i=B0173QNVT0&pd_rd_r=QREZAB8A4SDDSKP7FFRJ&pd_rd_w=4Pyjc&pd_rd_wg=WGq34&pf_rd_p=1274ff7b-443d-404e-8598-2b66a94c4928&pf_rd_r=QREZAB8A4SDDSKP7FFRJ&psc=1&refRID=QREZAB8A4SDDSKP7FFRJ

It's a JTech wireless keyboard it's pretty cheap and comfy to use! :)

I have this one https://www.amazon.ca/JETech-2-4GHz-Wireless-Keyboard-Windows/dp/B0173QNVT0/ref=sr_1_2?crid=2RYNNJ1Z87KNE&keywords=jetech+keyboard&qid=1565323202&s=gateway&sprefix=jetech+key%2Caps%2C153&sr=8-2

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Its cheap and reliable, much quieter than mechanical keyboards, I personally find the compact and quit much better for working in general. but you can find better at a higher price

I haven't used it with warframe yet, but for other games I've been using my PS4 gold headset and this generic wireless usb keyboard

This is my current keyboard that I absolutely love but I am thinking switching to mechanical.

Are there any mechanical keyboards out there that are:

• wireless (using wifi receiver like logitech does)
  
• thin (like This)
  
• Low Profile (like This)
  
• No numpad (like This)

list for $14 here. dont waste your time or risk shorting your usb ports, just buy another one.
https://www.amazon.com/JETech-Ultra-Slim-Wireless-Keyboard-Windows/dp/B0173QNVT0/ref=sr_1_fkmr1_1?ie=UTF8&qid=1518998171&sr=8-1-fkmr1&keywords=JETech+2.4GHz+Wireless+Keyboard