David Chen
David Chen covers Apple Silicon for Macfax. He benchmarks local LLMs on M-series Macs and writes about unified-memory bandwidth, MLX, GGUF, prompt-eval throughput, and the tradeoffs between Mac and discrete-GPU inference. He has contributed to r/LocalLLaMA since 2023 and has run hundreds of model-and-quantization combinations across M1 Pro through M3 Ultra hardware on his own bench.
Why eBay Authenticity Guarantee covers watches and sneakers but not Macs
eBay Authenticity Guarantee inspects watches, sneakers, handbags, jewelry, and trading cards before delivery, but not Macs. Here is the category logic behind the exclusion and the Money Back Guarantee mechanics that remain for Mac listings.
Back Market vs Reebelo: which refurbished Mac marketplace to buy from
Back Market vs Reebelo for a refurbished Mac comes down to inspection scope, battery floors, OEM-parts guarantees, and accidental-damage cover. Both run curated-refurbisher models with 12-month warranties and 30-day returns; the differences at the edges decide specific listings.
Apple Certified Refurbished vs buying a used Mac from a private seller
Apple Certified Refurbished Macs ship at around 15% off new with a one-year warranty and 14-day returns; private-party listings sit 30 to 50% below new and shift the verification work to the buyer. Here is what each side delivers on warranty, parts, and counterparty risk.
How to buy a used Mac safely: every verification option compared
How to buy a used Mac safely starts with chaining Apple Coverage Check, Apple Diagnostics, in-person Activation Lock and MDM verification, CoconutBattery, and DriveDx. Here is every consumer-accessible option compared on what it delivers and where it falls short.