The BEST budget gaming computer r5 2400g with RX 570 4gb 16GB 3000 MHz ram and NZXT H500 case. Complete guide on how to build it and gaming benchmarks are added to another video, check the video description.
Total cost $713

Test of the computer in 12 games here – https://www.youtube.com/watch?v=WMRsh_mfY4A

PC spec:
CPU: AMD Ryzen 5 2400G, 3.9 GHz, Socket AM4
Mainboard: ASRock Fatal1ty B450 Gaming K4, B450, AM4, DDR4
RAM: 16GB (2x8GB) DDR4 3000MHz, Team Group T-Force Vulcan, 1.35V
Video Card: SAPPHIRE Radeon RX 570 NITRO+ 4GB GDDR5 256bit
SSD: Solid State Drive (SSD) Kingston A400, 240GB, 2.5″, SATA III
HDD: WD Blue 1TB, 7200 64MB, SATA 3
PSU: Corsair CS650M 650W
Case: NZXT H500 Mid Tower Gaming Case – White USB 3.0

CPU installation: 3:33
CPU FAN installation: 3:48
RAM installation: 4:23
Back plate installation: 4:40
SSD installation: 5:16
HDD installation: 5:37
PSU installation: 6:07
Mainboard installation: 6:30
Mainboard Power cable: 7:22
CPU Power cable: 7:31
SATA cables: 7:42
Front panel audio cable: 8:22
Front panel USB 3 cable: 8:30
Front panel case power cable: 8:54
HDD SDD power cables: 9:05
PCI express cable: 9:26
Case fans cables: 9:54
Video card installation: 10:10

Price links:
AMD Ryzen 5 2400G – $132
https://www.amazon.com/s?k=AMD+Ryzen+5+2400G&ref=nb_sb_noss_2

ASRock ATX Motherboard (B450 Gaming K4) – $95
https://www.amazon.com/s?k=ASRock+Fatal1ty+B450+Gaming+K4&ref=nb_sb_noss

Team 16GB (2 x 8GB) T-Force Vulcan DDR4 PC4-24000 3000MHz – $101
https://www.amazon.com/Team-T-Force-PC4-24000-3000MHz-TLGD416G3000HC16CDC01/dp/B06WGR1H8J/ref=sr_1_fkmr2_1?keywords=Team+Group+T-Force+Vulcan%2C+1.35V&qid=1553981247&s=gateway&sr=8-1-fkmr2

Radeon Nitro+ RX 570 4GB GDDR5 – $188.99
https://www.amazon.com/Sapphire-11266-14-20G-Radeon-Backplate-Graphics/dp/B071CF1JFV/ref=sr_1_fkmrnull_2?keywords=SAPPHIRE+Radeon+RX+570+NITRO%2B+4GB+GDDR5+256bit&qid=1553981335&s=gateway&sr=8-2-fkmrnull

Kingston 240GB A400 SSD – $28
https://www.amazon.com/Kingston-240GB-Solid-SA400S37-240G/dp/B01N5IB20Q/ref=sr_1_fkmrnull_2?keywords=Solid+State+Drive+%28SSD%29+Kingston+A400%2C+240GB&qid=1553981402&s=gateway&sr=8-2-fkmrnull

WD Blue 1TB, 7200 64MB, SATA 3 – $44
https://www.amazon.com/Digital-Deskptop-1Terabyte-5400-7200RPM-Applications/dp/B06XR3LT6W/ref=sr_1_9?keywords=WD+Blue+1TB%2C+7200&qid=1553981468&s=gateway&sr=8-9

Corsair CS650M 650W – $50
https://www.amazon.com/s?k=Corsair+CS+650M&ref=nb_sb_noss

NZXT H500 – $75
https://www.amazon.com/s?k=NZXT+H500&ref=nb_sb_noss