LG gram Pro 16 (16Z90TS-G.AUG9U1): problems, parts and running costs

Checked: 2026-10-18

Summary

The AUG9U1’s problems are about expectations rather than failures: owners see real-world battery life well under the review numbers — about 6 hours at 90% brightness in one 32GB/2TB report — and one owner measured roughly 330 Mbps wired throughput against about 900 Mbps on other machines [13][12]. Running cost is tiny: an illustrative $4.53 a year in electricity, with no mandatory subscriptions [2][3]. It is worth buying new and warrantied at $1,400 or below; near $2,100 the case rests almost entirely on the 2.73 lb chassis and the 32GB/2TB combination [3][5].

Common problems and fixes

Slow Wi-Fi and wired throughput on some units — a May 2026 owner report of roughly 330 Mbps even over USB wired Ethernet versus about 900 Mbps on other machines, unresolved by Intel driver updates, fresh Windows installs, network-settings changes and LG Update [12]. One report, not a prevalence statistic; test actual throughput inside the return window.
Panel motion blur — pixel response measures about 30 ms black-to-white and 47 ms grey-to-grey on the tested sibling, which shows as ghosting even at the 144 Hz refresh ceiling [3]. No fix; it is a performance limit, not a defect.
Software overhead — Microsoft 365 is only a 30-day trial, and a clean Windows reinstall cut idle load but temporarily removed LG’s AI cooling controls [19][2]. Fix: keep LG’s update utilities unless you accept losing them.

Parts and consumables

65W USB-C power adapter — included in the box; replace only on failure or loss. Third-party replacements listed in October 2026: an iTEKIRO 65W adapter sold for this exact SKU at $38.99 (sold out at check) [9], and a UGREEN Nexode 65W 3-port at $27.99 on sale against a $39.99 reference price [10]. LG also sells a 65W USB-C adapter under part EAY65895901, but its page does not confirm this exact model [14].
M.2 NVMe SSD (two 1TB drives, both slots occupied) — non-consumable; expanding storage means replacing a drive rather than adding one. A general-purpose Samsung 990 EVO Plus 1TB was listed at $239.99 at Best Buy in October 2026, though its fit and boot support in this chassis are unverified [11].
Memory — 32GB LPDDR5X is built into the processor package and not upgradeable; there is no memory part to buy [2].

Yearly running cost

Computed from LG’s battery spec, not measured: 250 complete 77 Wh recharges a year at 85% wall-to-battery efficiency and $0.20 per kWh works out to about 22.65 kWh (250 × 0.077 ÷ 0.85), or roughly $4.53 a year [2][3]. That scenario omits AC-powered use with a full battery, sleep drain and heavy workloads, so actual electricity cost can be materially higher. Contingent expenses, not annual: a replacement charger at $27.99–$38.99 observed in October 2026, a failed SSD at $239.99, and an eventual battery replacement whose price was not verified [9][10][11].

When it is a good buy

LG’s February 2025 launch put the whole 16Z90TS series at $1,849–$2,399 depending on SKU [7].
Notebookcheck reported the Ultra 9 version at LG’s US store for $2,099.99 (reduced) in April 2025 [3]; Trusted Reviews lists a US RRP of $2,299.99 for the 258V/32GB/1TB configuration [4]; Consumer Reports lists the 16GB/1TB AUG4U1 at $1,399.99 [5].
B&H marked the exact AUG9U1 “No Longer Available” in October 2026 [6] — confirm seller, delivery date, warranty coverage and return window before paying.
At $1,400 or below it is an attractive buy if genuinely new and warrantied; at $1,400–$1,700 consider it when Windows, 2TB and minimum carry weight matter; above $1,800 compare the ASUS Zenbook S16 first; near $2,100 it is hard to defend on performance-per-dollar [3][6][15].
ASUS Zenbook S16 (Ryzen AI 9 465, 32GB/1TB): listed at $1,799.99 at Best Buy in October 2026 — the better choice if you want a newer Windows machine with OLED and touch instead of the lightest body [15]; an older Ryzen AI 9 365 24GB/1TB listing sat at $1,699.99 [15].
MacBook Air 15-inch M5: starts at $1,299 (March 2026) — the better choice if macOS covers your apps and you do not need 32GB/2TB at this weight [16].