Building first gaming PC only can spend $800 looking for advise

$793 Gaming monster with monitor.
This build is for 1080p resolution gaming playing almost all games with ultra settings.
Enable Free sync for ultra smooth gameplay and set the monitor to 144hz.Flawless CS GO performence.

CPU: AMD - Ryzen 3 1300X 3.5GHz Quad-Core Processor
https://www.newegg.com/Product/Product.aspx?Item=N82E16819113445&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=


Motherboard: Asus - PRIME A320M-K Micro ATX AM4 Motherboard
https://www.newegg.com/Product/Product.aspx?Item=N82E16813157762&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=


RAM: Patriot - Viper Elite 8GB (2 x 4GB) DDR4-2666 Memory
https://www.newegg.com/Product/Product.aspx?Item=N82E16820225079&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=


Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive
https://www.newegg.com/Product/Product.aspx?Item=N82E16822236339&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=


GPU: MSI: Radeon RX 580 4GB GAMING X Video Card
https://www.newegg.com/Product/Product.aspx?Item=N82E16814137119&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=


PC cabinet: Rosewill - NAUTILUS ATX Mid Tower Case
https://www.newegg.com/Product/Product.aspx?Item=N82E16811147254&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=


PSU: SeaSonic - S12II 430W 80+ Bronze Certified ATX Power Supply
https://www.newegg.com/Product/Product.aspx?Item=N82E16817151074&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=


Monitor: AOC - G2460PF 24.0" 1920x1080 144Hz Monitor
https://www.amazon.com/gp/product/B01BV1XBEI/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1

The budget was tight and it din't allow me for keyboard, mouse and headphones.

Keyboard: Redragon - K552 Wired Gaming Keyboard
https://www.amazon.com/dp/B016MAK38U/?tag=pcpapi-20

Mouse: Logitech - G502 Wired Optical Mouse
https://www.newegg.com/Product/Product.aspx?Item=N82E16826197148&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=


Headset: Logitech - G230 Headset
https://www.newegg.com/Product/Product.aspx?Item=N82E16826104840&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=


Kingston hyperx cloud core or SteelSeries 3H VR, both are priced $20 more than Logitech - G230 but worth it for better sound and mic.Find in newegg and amazon.

I recommend this Ryzen build:

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 5 1600 3.2GHz 6-Core Processor ($193.67 @ OutletPC)
Motherboard: ASRock - AB350M Pro4 Micro ATX AM4 Motherboard ($49.99 @ Newegg)
Memory: Patriot - Viper Elite 8GB (2 x 4GB) DDR4-2666 Memory ($76.99 @ Newegg)
Storage: SanDisk - SSD PLUS 240GB 2.5" Solid State Drive ($74.99 @ Amazon)
Video Card: EVGA - GeForce GTX 1060 6GB 6GB SC GAMING Video Card ($264.98 @ Newegg)
Case: Rosewill - NAUTILUS ATX Mid Tower Case ($23.99 @ Newegg)
Power Supply: SeaSonic - S12II 430W 80+ Bronze Certified ATX Power Supply ($32.98 @ Newegg)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($88.89 @ OutletPC)
Total: $806.48
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-11-05 23:14 EST-0500

You forgot the G sync monitor, PC case, headphone, keyboard and mouse dude which are quite essential i think.
Acer xb241h ($350 @ newegg)
Let him enjoy the butter smooth game play of CS GO at 144fps with a sync technology

No. A build is a build, generally does not involve peripherals such as kb, mouse, monitor or even OS unless the Op states he needs them, or anything else. There's no way of telling just what op plans are, he could be hooked up with a college/Govt program and get windows cheap, could already have a monitor from his console, might plan on using his TV and have headphones anyway. What op asked for is a pc for less than $800, not a complete plug and play setup. If op needs all those too, should say so because that's $200-$300 difference all told, which can drastically change a lower budget build.
PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 5 1400 3.2GHz Quad-Core Processor ($149.59 @ OutletPC)
Motherboard: ASRock - AB350M Pro4 Micro ATX AM4 Motherboard ($59.99 @ Amazon)
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3000 Memory ($122.99 @ Newegg)
Storage: SK hynix - SL308 250GB 2.5" Solid State Drive ($78.99 @ SuperBiiz)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($43.78 @ OutletPC)
Video Card: EVGA - GeForce GTX 1060 6GB 6GB SC GAMING Video Card ($259.99 @ Best Buy)
Case: Corsair - Carbide Series 88R MicroATX Mid Tower Case ($49.99 @ Amazon)
Power Supply: SeaSonic - S12II 520W 80+ Bronze Certified ATX Power Supply ($37.99 @ SuperBiiz)
Total: $803.31
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-11-04 14:31 EDT-0400

That's an $800 pc. If you want OS, monitor, kb, mouse, headphones etc expect $300+ to the total. If you need everything, you'd be seriously out of luck as your games choices won't work except on very low settings on a $500 build. Sorry, but pc's are expensive gaming.

I agree with you but with rx580 and ryzen 3 1300x there will only be a 10%fps reduction and i think that wont stop you from playing aaa titles smoothly at ultra settings 1080p + he gets a new 144hz free sync monitor. All within $800. What you say about that?

You can't OC the a 320 boards, so 2666MHz ram is iffy to work. It's also a measly 8Gb. You are putting everything on a 1Tb hdd. The case is minimal (and ugly (imho), an Rx580 on a 430w psu? That's pushing the limits. A straight 4c/4t cpu that's roughly at a i5-4690 level equivalent is going to suffer trying to get 144 or better fps in games like GTA:V or BF1 or Witcher 3, but'll work for cs:go. Basically you've shortchanged everything just to cram in a 144Hz monitor for cs:go, which is going to suffer anyways because players do not like waiting for ppl to drop using hdd etc, not to mention the added lag. Op'll be buttery smooth and dead all to often. I'd take a better cpu (i7-3770K) +ssd with a plain-jane 1080p 60Hz (which is what I run cs:go with at 300fps) and a nice case, respectable psu, every day over a faster refresh monitor that only benefits a few games.

Karadjgne's $800 PC is the best. Sorry i forgot about the added lag in CS GO. If the budget allows go for the OP 144 fps monitor.

Heh yeah, I love those ppl running 500+ lag, they are the easiest for me to shoot cuz my reaction times are so slow on the kb, anyone who has 30-50 like me tends to be already moving away after killing me before I get to aim at them. I'll purposely check the chart and hunt them down just so I can get at least 1 kill before dieing.