I don't know why people are hung up on DOS compatibility and a multi-core CPU at the same time. All of the other requirements are things from the transition between "Vista with XP downgrade" and Windows 7. 32-bit XP can't use 4GB or more of RAM, so that's another requirement that you can loosen unless you're planning on running x64 edition. Late Core 2 chipsets could support 8GB of RAM, and anything newer can support more (my old i3-2330M could support 16GB).
There's a narrow range of XP-compatible laptops with quad-core CPUs. I'd say that you should go for a workstation laptop from 2010-2012 (late Core 2 to 3rd-gen Core) for best XP support and reliability. Anything older is in the bumpgate era, and newer stuff won't have good XP driver support. I had some strange performance problems with 2nd-gen (Sandy Bridge), but everyone else seems to like them. If you look at older Core 2 systems, look for an AMD GPU or an honest seller who can prove that any Nvidia chips were manufactured after bumpgate was fixed (not just some kitchen-oven "reflow" that occurred far below the melting temperature of solder).
MikeSG wrote on 2025-12-26, 14:01:
All laptop displays up to the Dual Core era have relatively bad LCDs... High blacks, lowish response rate. Laptops in the first/second gen Intel Core i5/i7 series are much better, but completely erase the retro experience.
My experience back then was that the transition from CCFL to LED backlights resulted in some terrible displays for a few years, and that coincided with first/second-gen Core CPUs. I don't know how black level and contrast ratio (real measured contrast, not the marketing number that kept developing extra zeros) got so much worse in those early LED-backlit LCDs at the same time, but it did. Color quality was bad enough (due to bad backlight LED choice) to make them suck for basic office/school use because what might appear to be blue or cyan on-screen would turn out to be green when you printed a document or connected an external display. You had no choice but to get a gaming or workstation laptop to get a decent display back then (including resolution - in that era, the most common resolution decreased from 1440x900 to 1366x768 on regular consumer/business laptops), while C2D and earlier consumer laptops were at least reasonable for office use.