All right, here's my mini-preview of the
ASRock B650M-HDV/M.2 (micro ATX) motherboard, for all of $120 smackeroos.
Quick observations form building it into a case:
1) It has adequate fan headers for a microATX board. I counted at least 4 (2 top right, 2 mid bottom) but only needed to use two.
2) It has ZERO headers for ARGB or RGB. Depending on your style this is either a non-issue or a deal breaker. You'd need to step up to at least the Riptide line from ASRock for rainbow vomit.
3) It is very clearly a budget board built to a budget price point. No captive m.2 heatsink screws, no quick install m.2 turnkeys, adequate but cheaply made heatsinks, cheap audio codec, few USB ports etc.
4) Wifi not included, though a m.2 E-key slot is present. $20 Intel AX200 desktop wireless kit was utilized to add Wifi 6 capability.
5) Features where it matters - PCIe 4.0 for GPU slots, but manages to have PCIe 5.0 for primary m.2 slot and PCIe 4.0 for secondary m.2. 2.5G LAN. Two front panel USB3 headers.
If you want a review of it,
HUB already did one. Spoiler: It's pretty decent for a budget build as long as you are aware of the limitations.
System specs for now (heavily recycling spare parts):
Corsair Air 240 microATX case ($free - this thing is circa 2014)
Ryzen 7700X (hand-me-down from my primary rig after 7800X3D upgrade)
ASRock B650M-HDV/m.2 ($120ish online)
Arctic Cooling 240mm AIO (this thing is about as old as the case - reused the 4x120mm fans too)
TeamGroup 32GB DDR5-5600 CL36 (Hynix M die, $130 originally - hand-me-down from primary rig)
Solidigm P44 Pro 1TB Gen4 PCIe m.2 drive ($70)
Gigabyte GeForce RTX 2070 8GB card
Corsair RM650x PSU
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Now for the breakdown of what I want to do with this rig. This rig will house my old spinning HDDs, an Optane m.2 drive in the 2nd m.2 slot, and a few old 2.5" SSDs. The Air 240 case has 3x HDD bays and 3x 2.5" SSD bays so the 4x SATA ports on the B650 board are the limiting factor (unless I buy a PCIe to m.2 adapter card). It'll give me enough for a compact server build to let me play around with TrueNAS, ZFS, etc.