gone

1680x1050 :/

1080p, after using a 19" 1280x1024 screen for 6 years

here are some links with info/charts or whatever about 4k resolution and videogames
http://www.digitalstormonline.com/unlocked/4k-resolution-gaming-on-the-nvidia-gtx-780ti-gtx-titan-and-gtx-780-idnum102/#.UssNlvQW34Y
http://www.anandtech.com/show/7120/some-quick-gaming-numbers-at-4k-max-settings

i believe a 4k resolution screen is around $1000, maybe it got cheaper, (or u can use a smaller screen with the new nvidia DSR) and it is possible to play games with a single high-end videocard like 780ti or 980, but what's the point of using 4k if you're gonna play on lowest settings on most new games? so you'll need another $1000 for 2 high-end cards

wats the point, anywei the humon eye cun't see over 720p

View attached image.

1200p (16:10)

I have 2x 1200p but gaming only on one of them with 970GTX and everything is smooth and alright in my world

EDIT: Just for the giggles I tried Far Cry 4 on both of them, I was still getting around 30 fps on Ultra and 2xMSAA with i7-2700k and GTX970
http://www.imagebam.com/image/80394b367442513

I have tried 4k, but in my opinion 1440p is currently optimal. Better software support, easier to max settings, can get a great monitor for a few hundred $$. Especially if you sit close to your monitor. I'd use 4k if I did graphic design, CAD work, or other semi-static detail work, but I don't.
My personal recommendations, and what I use:
Benq BL2710PT
Gigabyte 970 G1 Gaming

I use a single slightly OC'd gpu currently, but my build is ready for a second at any time. However, I run farcry 4, ac unity, and any other game I throw at it great on ultra @1440p. Temps don't even get above 70C. When I hit a game that slows me down, I'll SLI.

You really need to get away from a projector, that's a big quality loss right there.

Beds are kinda useful. Probably best not to sell it. 4 PCs currently. You certainly can build one machine to multi-task like that, but there are a couple considerations off the top of my head:

1. Storage. If you're wanting to watch 1080 or higher res movies you will need a LOT of it unless you are just downloading and playing as you go. Fiber recommended. You'll want SSDs for games, HDDs for your media data. It doesn't sound like you're at the NAS stage. Go with external HDs rather than internal imo. You can usually find better deals on external drives anyway. One downside to having a media library IN your gaming PC is that the internal drives lead to additional heat, vibration, and noise.

2. Graphics card output ports. Make sure yours has the ports you need, and as many as you need. Many cheaper models skimp on the ports.

3. You have a projector to improve your visual movie experience, what about audio? For games I'm fine using onboard audio, but for a HTPC I recommend a dedicated sound card if you have any sort of sound system.

There's probably a lot more, but I already wrote more than intended. One last thought about 4k: If you wait a few years, perhaps you can get in on it when there's much better support. It's minimal return for the majority of games on the market right now and virtually no movies. Once we start seeing more 4k movie releases and games with models/textures designed for such high resolutions, that would be when I'd get a good 4k monitor... maybe even a 4k projector.

64x48@1080fps

1280x1024, because I'm too used to this aspect ratio and I sit close to the monitor anyway.

600p anyone? XD

I've got a Dell U3011 here that runs at 2560x1600 (16:10) with a Radeon HD7850 which works awesome for gaming. The majority of games I play are compatible with this resolution and work well with my hardware. A few high end newer games slow down a bit at this resolution but I can mitigate that by either dropping the resolution down to 1920x1200 and/or by tweaking 3D settings usually without any really noticeable difference visually, especially if the game is a FPS or TPP game with lots of motion etc. A fair number of 10+ year older games do not support the resolution but some can be coerced via INI file editing or community made hacks for the given title or some other trick. Surprisingly there are some rather ancient games such as "Blood" that support the native res out of the box.

Overall my experience at this resolution has been quite good. The biggest problems I have encountered so far are games which support the resolution either natively or via some workaround or hack - but do not scale the UI or mouse pointer. With some games this is not a problem but with others sometimes the UI elements are so tiny you can't make them out well or at all, or fonts are too small to read. The worst problem that I've encountered though is almost zero games support scaling the mouse pointer, so if I'm playing a hack'n'slash game like Torchlight II at 2560x1600, and there are zillions of enemies on the screen and everyone and their brother are casting spells and launching attacks, the special effects overwhelm the screen and the super tiny mouse pointer is completely impossible to find in order to be able to do anything sometimes. This problem happens with Battle for Middle Earth II updated to support high res and widescreen and many other games also. I find it is a bigger problem in RTS and overhead view ARPG type games more than anything. FPS/TPP games work pretty awesome though even if the UI elements are too small for the most part. Worst case, I can always drop down to 1920x1200 or so and things become more playable for the cases where it matters and still looks great, plus I still have the 30" display which is nice even with lower resolutions.

I imagine these problems will only become a bigger and bigger issue as we move to 4k, 5k, 8k and beyond displays over time, but can of course be mitigated by configuring problematic games to use lower resolutions or potentially official patches or unofficial patches/hacks to games.

For anyone considering going UHD or 4k/5k or larger, I say go for it if you can afford the monitor, the GPU(s) to properly use it, and any other accessories, it makes for an amazing gameplay experience and is quite worth it even with the aforementioned quirks.

Hope this gives some insight in decision making, and as always - have fun! :o)