why B550 motherboard is good for budget gamer ?

There are many features that are good in the b550 motherboard chipset but the main feature is VRM (voltage regulator module). VRM is one of the most important features in the motherboard if you are going to purchase X570 entry-level motherboard so stop because that motherboard VRM is not good but X570 gives you best feature as compare to b550 motherboard but X570 VRM is not good as compare to B550 motherboard chipset in the budget segment so please don't purchase X570 entry-level motherboard purchase b550 motherboard is best as compare to X570 motherboard.

The B550 chipset will have some limitations compared to X570, but will ultimately allow for more budget-friendly boards for people with AMD Ryzen 3000-series CPUs. AMD's B550 chipset enables PCIe® 4.0 compatibility for NVMe storage and graphics on mainstream motherboards. AMD B550 chipset is not compatible with AMD Ryzen™ 5 3400G & AMD Ryzen™ 3 3200G processors.

I give you the link of best budget B550 or best X570 motherboards and tell about their specification:-

Asus TUF Gaming B550M-Plus (Wi-Fi) Motherboard - ₹15000 (offline market)

Memory - 3rd Gen AMD Ryzen™ Processors

4 x DIMM, Max. 128GB, DDR4 4600(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory *

Next Generation AMD Ryzen PRO Processors

4 x DIMM, Max. 128GB, DDR4 4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133 MHz Un-buffered Memory

1. Intel wifi 6 AX200

2. DRMOS

3. 2.5 gigabit ethernet

U.k Amazon link - Asus TUF Gaming B550M-Plus (Wi-Fi) Motherboard

2. Gigabyte B550 Aorus Pro Motherboard - ₹ 15500 (assume not fix go to offline market)(india)

Supports 3rd Gen AMD Ryzen™ Processors
Dual Channel ECC/ Non-ECC Unbuffered DDR4, 4 DIMMs
True 12+2 Phases Digital VRM Solution with 50A DrMOS
Advanced Thermal Design with Fins-Array Heatsink and Direct Touch Heatpipe
Ultra Durable™ PCIe 4.0 Ready x16 Slot
Dual Ultra-Fast NVMe PCIe 4.0/3.0 x4 M.2 with Thermal Guards
AMP-UP Audio with ALC1220-VB and WIMA Capacitors for Rear 120dB SNR
Blazing Fast 2.5GbE LAN with Bandwidth Management
USB 3.2 Gen2 Type-C™ & HDMI Support
RGB FUSION 2.0 Supports Addressable LED & RGB LED Strips
Smart Fan 5 Features Multiple Temperature Sensors , Hybrid Fan Headers with FAN STOP
Q-Flash Plus Update BIOS without Installing the CPU, Memory and Graphics Card
Pre-installed IO Shield for Easy and Quick Installation

Amazon UK - GIGABYTE B550 AORUS PRO

3. Msi MAG B550 Tomahawk - ₹18000

MEMORY

4 x DDR4 memory slots, support up to 128GB 1
- Supports DDR4 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200 MHz by JEDEC
- Supports DDR4 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3600/ 3733/ 3866/ 4000/ 4133/ 4266/ 4400/ 4533/ 4600/ 4733/ 4800/ 4866/ 5000/ 5100+ MHz by A-XMP OC MODE
  - 1DPC 1R max speed 5100 MHZ
  - 1DPC 2R max speed 3866 MHZ
  - 2DPC 1R max speed 4000 MHZ
  - 2DPC 2R max speed 3600 MHZ
Dual channel memory architecture
Supports non-ECC UDIMM memory
Supports ECC UDIMM memory (non-ECC mode)
Supports un-buffered memory