MSI B450M MORTAR MAX Motherboard mATX, AM4, DDR4, LAN, USB 3.2 Gen2, TYPE-C, M.2, Mystic Light Sync, HDMI, Display Port, AMD RYZEN 1st, 2nd and 3rd Gen Ready

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Supports PCIe 3.0 x4 (1st, 2nd and 3rd Gen AMD Ryzen/ Ryzen with Radeon Vega Graphics and 2nd Gen AMD Extended Heatsink Design: MSI extended PWM and enhanced circuit design ensures even high-end processors to run in full speed. I know what a 2700X can do for gaming because my previous R5 3600 was around the same for gaming. Its not bad at all and could easily handle my RX5700XT which is about the same of the RX6600XT/RTX3060. Supports PCIe 3.0 x4 (1st, 2nd and 3rd Gen AMD Ryzen/ Ryzen with Radeon Vega Graphics and 2nd Gen (AMD I don't see why you should be worried about worse performance. That should not be the case unless Windows is overflowing with gunk/half corrupt, or MSI somehow borked the specific BIOS revision you flashed. Do a clean install if you haven't in a while, make sure you get the latest chipset drivers, and be on a reasonably recent BIOS. Do a few simple benchmarks and if performance is roughly in the right place then there's nothing to worry about (e.g. 650/9500 CPU-Z, 1600/21k R23 etc)

Only support when using AMD Ryzen with Radeon Vega Graphics and 2nd Gen AMD Ryzen with Radeon Graphics/ Athlon with Radeon Vega Graphics Processors I gone from R5 3600 to R9 5900X and I'm thinking now to keep the system past AM5, with 1 at least GPU upgrades in future. Most likely RDNA3 in the middle of 2023. Phillips 32 32M1N5800A (4k144), LG 32" (4K60) | Gigabyte G32QC (2k165) | Phillips 328m6fjrmb (2K144) You can always upgrade your GPU further down the road and this will upgrade your gaming experience more than any CPU or 32GB RAM will. Supports x8 speed with Ryzen with Radeon Vega Graphics and 2nd Gen AMD Ryzen with Radeon Graphics processorsDDR4 Boost: Advanced technology to deliver pure data signals for the best gaming performance and stability Military style with Extended heatsink design for better thermal solution, DDR4 Boost, Core Boost, Turbo M.2 and USB 3.2 Gen2 connector

Core Boost: With premium layout and fully digital power design to support more cores and provide better performance. Ryzen with Radeon Graphics) or PCIe 3.0 x2 (AMD Athlon with Radeon Vega Graphics)and SATA 6Gb/s 2242/ will be easy on B450, but not all will do any higher. I've ran into a few that won't do 3400 or above with quad rank, while x370 and x470 could with the same CPU and RAM. Ports 1x M.2 PCIe 3.0 x4 32Gbps/SATA 6Gbps up to 2280, 1 x M.2 PCIe 2.0 x4 16Gbps up to 2280, 4 x SATA 6Gbps, 1 x USB 3.1 Type-A, 1 x USB 3.1 Type-C, 6 x USB 3.0 (2 via headers), 6 x USB 2.0 (4 via headers), 1 x LAN, audio out, line in, mic, Optical S/PDIF outGaming may be less demanding on cooling but still the 5900X can draw over 100W (PPT) of power on some games. 5700X may draw around half (maybe 60%) of what 5900X will for gaming.

so the issue is switched on pc and only got the mystic light, power led or hdd led don't light up and pc wont start psu is working and motherboard EZDebug led shows cpu as issue so was thinking cpu was dead.

Consider going 4x8GB of that RAM if you can, as you tend to get an extra 10% CPU performance in a lot of game titles from four memory ranks on zen 3.