Notes on practical laptops around 1 kilogram. Best-effort information, not buying advice.https://under1kg.com/en-ushttps://under1kg.com/articles/dynabook-portege-x30l-m-research-notes/https://under1kg.com/articles/dynabook-portege-x30l-m-research-notes/Research notes on the 2024 Dynabook Portégé X30L-M (Meteor Lake refresh, US SKUs PQU10U-0DU00V and 0DV00V). 875g starting weight, 13.3-inch 1920×1200 IPS, Core Ultra 5 125U or Core Ultra 7 155U. Display is 1920×1200 — below this site's preferred 2K threshold — included because the chassis pairs sub-900g weight with a near-complete business-port story including physical RJ-45 Ethernet.Sun, 10 May 2026 00:00:00 GMTresearch notesSam Parkhttps://under1kg.com/articles/vaio-sx12-2025-research-notes/https://under1kg.com/articles/vaio-sx12-2025-research-notes/Notes on the 2025 refresh of the VAIO SX12 (model VJS127), announced September 2025 in Japan. Same 899g carbon-fiber chassis as the 2024 VJS126, same 12.5-inch FHD IPS display, same dual-SIM (nanoSIM + eSIM) and physical RJ-45 Ethernet. Different CPU class — Intel Core 7 150U / Core 5 120U (Series 1 U-class Raptor Lake refresh, no NPU). Display is 1920×1080 — below this site's preferred 2K threshold — included on the same JP-cluster basis as the published 2024 SX12 and Fujitsu UH-X articles.Sun, 10 May 2026 00:00:00 GMTresearch notesSam Parkhttps://under1kg.com/articles/asus-expertbook-ultra-b9406-research-notes/https://under1kg.com/articles/asus-expertbook-ultra-b9406-research-notes/Notes on the Asus ExpertBook Ultra (B9406CAA), launched at CES 2026 with Intel Core Ultra Series 3 (Panther Lake), a 14-inch 3K tandem-OLED touchscreen, and a 0.99-kg lightest weight. Compiled from Asus's US product page, ITPro's review, Notebookcheck launch coverage, and Ultrabook Review's preview. I have not used this laptop personally.Sat, 09 May 2026 00:00:00 GMTresearch notesSam Parkhttps://under1kg.com/articles/lenovo-thinkpad-x1-carbon-gen-14-aura-research-notes/https://under1kg.com/articles/lenovo-thinkpad-x1-carbon-gen-14-aura-research-notes/Notes on the Lenovo ThinkPad X1 Carbon Gen 14 Aura Edition, announced at CES 2026 with Intel Core Ultra X7 Series 3 (Panther Lake) and a claimed weight of 996g. Compiled from Lenovo's official datasheet PDF, TechRadar's launch coverage, and Ultrabook Review's preview. I have not handled this laptop in person.Sat, 09 May 2026 00:00:00 GMTresearch notesSam Parkhttps://under1kg.com/articles/msi-prestige-13-ai-plus-evo-research-notes/https://under1kg.com/articles/msi-prestige-13-ai-plus-evo-research-notes/Notes on the 2024–2025 Lunar Lake refresh of the MSI Prestige 13 (chassis A2VM, US SKUs A2VMG-014US and A2VMG-019US). 990 g, 13.3-inch 2880×1800 OLED, Core Ultra 7 258V with a 48-TOPS NPU, Copilot+ certified. Compiled from MSI's official US product page, Notebookcheck's review, Laptop Mag's review, and launch coverage — I have not used this laptop personally.Sat, 09 May 2026 00:00:00 GMTresearch notesSam Parkhttps://under1kg.com/articles/asus-zenbook-s-13-oled-ux5304-research-notes/https://under1kg.com/articles/asus-zenbook-s-13-oled-ux5304-research-notes/Notes on the 2024 Meteor Lake refresh of the Asus Zenbook S 13 OLED (UX5304MA). 1.0 kg, 13.3-inch 2880×1800 OLED, Core Ultra 7 155U. Compiled from Asus's official spec page and retailer listings — I have not used this laptop personally.Fri, 08 May 2026 00:00:00 GMTresearch notesSam Parkhttps://under1kg.com/articles/fujitsu-lifebook-uh-x-h1-research-notes/https://under1kg.com/articles/fujitsu-lifebook-uh-x-h1-research-notes/Research notes on the Fujitsu LIFEBOOK UH-X/H1, a 689g 14-inch ultralight built in Japan. Primarily JP-market with sparse English-language sourcing; importing to the US needs a forwarder. Display is 1920×1200 — below this site's preferred 2K threshold — included because the weight is exceptional.Fri, 08 May 2026 00:00:00 GMTresearch notesSam Parkhttps://under1kg.com/articles/vaio-sx12-2024-research-notes/https://under1kg.com/articles/vaio-sx12-2024-research-notes/Notes on VAIO's 13th-gen-Intel SX12. 899g starting weight, 12.5-inch FHD, real Thunderbolt 4, and one of very few laptops still offering nanoSIM + eSIM. Display is 1920×1080 — below this site's preferred 2K threshold — included for context.Fri, 08 May 2026 00:00:00 GMTresearch notesSam Parkhttps://under1kg.com/articles/hp-omnibook-7-aero-hands-on-microcenter/https://under1kg.com/articles/hp-omnibook-7-aero-hands-on-microcenter/Brief in-store impressions of the HP OmniBook 7 Aero (13-bg1002nr) at Micro Center. Sharp 2.5K display, solid build, but the trackpad click feels notably less crisp than the ThinkPad X1 Carbon Gen 13 in the same store.Wed, 29 Apr 2026 00:00:00 GMThands onSam Parkhttps://under1kg.com/articles/lenovo-thinkpad-x1-carbon-gen-13-aura-three-configurations/https://under1kg.com/articles/lenovo-thinkpad-x1-carbon-gen-13-aura-three-configurations/Comparing three configurations of the same ThinkPad X1 Carbon Gen 13 Aura available in Spring 2026: a $999 factory refurbished low-spec, a $1,800 new IPS-touch, and a $2,589 new OLED. Same chassis. Three different value propositions.Wed, 29 Apr 2026 00:00:00 GMTcomparisonSam Parkhttps://under1kg.com/articles/lenovo-thinkpad-x1-carbon-gen-13-aura-hands-on-microcenter/https://under1kg.com/articles/lenovo-thinkpad-x1-carbon-gen-13-aura-hands-on-microcenter/I tried the X1 Carbon Gen 13 Aura briefly at a local Micro Center. First impressions of the keyboard and display, plus the verified spec sheet for the WUXGA IPS-touch SKU they had on the floor.Tue, 28 Apr 2026 00:00:00 GMThands onSam Parkhttps://under1kg.com/articles/lenovo-thinkpad-x1-carbon-gen-13-aura-research-notes/https://under1kg.com/articles/lenovo-thinkpad-x1-carbon-gen-13-aura-research-notes/Notes on the X1 Carbon Gen 13 Aura compiled from Lenovo's spec sheet and independent reviews. Not a hands-on review — I have not used this laptop personally. For first-hand impressions, see the linked reviews.Tue, 28 Apr 2026 00:00:00 GMTresearch notesSam Park