Tag: hardware

What the B in 7B, 12B and 125B means, how MoE total vs active parameters differ, and why quantization changes the memory math. A guide for local LLM users.

How NVMe wear leveling works and which SMART health log fields show it: Percentage Used, Available Spare, media errors, TBW math, smartctl vs nvme-cli.

Find what pins your home lab at high idle power: ASPM, package C-states, disks, NICs, and chatty containers. Measure at the wall and fix one blocker at a time.

Grid-tied solar shuts off in an outage. The battery keeps your lab alive. Size it first, then the panels, with real prices for a power station vs a 48V build.

Measure real homelab power draw box by box: wall meter vs smart plug, UPS, IPMI and RAPL, which numbers lie, and how to log watts to CSV and average them.

Real RAM, disk, and CPU numbers for self-hosted Nominatim. Planet vs region, mini PC vs server, what survives the import and what doesn't.

Pick the right rack for your homelab: open frame vs 4-post vs wall-mount. Cable management, noise, and space trade-offs explained.

Used SFP+ gear turns 10GbE from a $5k fantasy into a $200 build. Mellanox NICs, the MikroTik CRS305 switch, DAC cabling, and where the savings stop.

Pick the right IT-mode HBA for ZFS: LSI 9211-8i vs 9300-16i vs 9400 series. Flash firmware, avoid RAID controllers, navigate expanders and PCIe lanes.

Calculate true energy costs: watts, kWh, BTU output, and 5-year TCO for homelab hardware swaps. When efficiency pays back.

Used enterprise-grade managed switches under $100: Aruba, Brocade, MikroTik picks, VLAN setup, wattage, and gotchas for home lab networks.

Noctua fans, IPMI curves, and undervolting techniques to make rackmount servers bedroom-quiet without thermal compromise.