CPU: AMD A10-9700 for about $400;
Motherboard: GIGABYTE GA-A320M-H for about $400;
Memory: Kingston 8G DDR4 2666hz (on hand already);
Hard drive: Western Digital WD Blue SN550 250GB M.2 NVMe SSD, price about $300;
Power supply: Great Wall (Great Wall) GT-400S 400W power supply, price about $150;
Chassis: Sigma (IN-WIN) GT1 black chassis, the price is about 200 yuan.
The total price of the above configuration is around $1,450. If your budget can be increased by $1,000-$1,500, you can consider upgrading your CPU to an AMD Ryzen 5 5600G or Intel Core i5-11400, and adding a 4GB or 8GB RAM stick to improve overall performance and smoothness.