Data-backed buying guides with live prices and owner sentiment.
A 155GB model on a 96GB card still runs, if it is a mixture-of-experts model and llama.cpp parks the experts in system RAM. We measured what that costs on an RTX 5090, a Radeon AI PRO R9700, an RTX PRO 6000, an H200 and a B200, why two desktop memory channels are the wall, and the twelve-channel EPYC build that gets around it.
The 256GB M5 Ultra runs 300B-class models on a desk at 30 to 130 tokens per second and reads prompts 2.5 to 4 times faster than the M3 Ultra. What fits, what does not, and how it stacks up against a DGX Spark, an RTX PRO 6000 and an RTX 5090 in our own tests.
Four developer laptops that actually earn their price tag right now - ranked with live prices, real price histories, and what owners say months after buying.