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ASUS ROG Zephyrus S GX531 Series

2018-2019 Models

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Charger Included?

The ASUS ROG Zephyrus S GX531 is the ultra-thin 15.6-inch gaming laptop that pushed slim-chassis design to an extreme — as little as 15.35mm thick with hidden scissor-door hinges and an Active Aerodynamic System that opens as the lid lifts. Sold across a 2018 launch (8th-gen Intel + GTX 10-series) and a 2019 refresh (9th-gen Intel + RTX 20-series) under the same GX531 model number, it's a genuine collector-grade thin-and-light. If you're trying to sell this laptop online, GadgetSalvation buys the Zephyrus S GX531 directly for cash through our trade-in service — no marketplace listing fees, no buyer haggling, no shipping risk. Before picking a configuration above, confirm your code is GX531 and not one of its close relatives: the GX502 is the thicker sibling with full-wattage (non-Max-Q) RTX graphics, dual SSDs, and no webcam; the GX501 is the older 2017 original; and the GX701 is the 17-inch version. Because your CPU generation, GPU tier, RAM, storage, and display refresh rate all affect resale value, select your exact components above for an instant cash offer.

Which GX531 do you have?

2018 launch

  • Intel Core i7-8750H (8th-gen)
  • NVIDIA GTX 1060 (GX531GM) or GTX 1070 Max-Q (GX531GS)
  • 144Hz FHD panel

2019 refresh

  • Intel Core i7-9750H (9th-gen)
  • NVIDIA RTX 2060 (GV), RTX 2070 Max-Q (GW), or RTX 2080 Max-Q (GX / GXR)
  • Adds the 240Hz Pantone-validated panel option

Core hardware configurations

Processor (CPU)

  • 2018: Intel Core i7-8750H — 6 cores, 12 threads, up to 4.1 GHz
  • 2019: Intel Core i7-9750H — 6 cores, 12 threads, up to 4.5 GHz
  • Both are hexa-core "H" processors; the CPU generation is the clearest way to date your unit

Graphics (GPU)

  • 2018: GTX 1060 (6GB) or GTX 1070 Max-Q (8GB)
  • 2019: RTX 2060 (6GB), RTX 2070 Max-Q (8GB), or RTX 2080 Max-Q (8GB)
  • The RTX chips in this chassis are Max-Q (power-efficient) variants, with ROG Boost up to 90W in Turbo
  • NVIDIA Optimus graphics switching for improved battery life

Memory (RAM)

  • DDR4-2666 dual-channel
  • Shipped in 16GB or 24GB factory capacities
  • 8GB is soldered to the motherboard and cannot be removed; a single SO-DIMM slot is user-accessible
  • Maximum total capacity is 24GB (8GB soldered + a 16GB module)

Storage

  • Single M.2 PCIe NVMe SSD — no 2.5-inch bay and no RAID array
  • 256GB / 512GB / 1TB factory capacities
  • The single M.2 slot is user-accessible for replacement or a higher-capacity upgrade

Display & audio

Display

15.6-inch FHD (1920 × 1080) IPS-level with slim NanoEdge bezels. The 2018 units use a 144Hz / 3ms panel; the 2019 refresh adds a 240Hz / 3ms Pantone-validated option. Both cover 100% sRGB and support NVIDIA Optimus.

Audio

Stereo speaker system with a smart-amp design, plus a 3.5mm combo audio jack. There is no separate DisplayPort — external displays run over HDMI 2.0b or the USB-C port.

Ports & connectivity

A deliberately minimal port set for an ultra-thin chassis. Note there is no Thunderbolt 3, no Ethernet jack, and no card reader — trade-offs for the slim design.

Left Side
  • 1× Power connector (DC-in)
  • 2× USB 2.0 Type-A
  • 1× USB 3.2 Gen 1 Type-C
  • 1× 3.5mm combo audio jack
Right Side
  • 1× USB 3.2 Gen 2 Type-A
  • 1× USB 3.2 Gen 2 Type-C (DisplayPort output + Power Delivery up to 65W on RTX/GTX-equipped configs)
  • 1× HDMI 2.0b

Wi-Fi 5 (802.11ac) Bluetooth 5.0

Battery, build & more

Battery & charging

50Wh battery — modest, in keeping with the ultra-thin design. Ships with a barrel-plug adapter; USB-C Power Delivery supports lower-wattage charging (up to 65W) for light workloads on the go.

Webcam

Includes a built-in Full HD (1080p) webcam. Unlike the thicker GX502 and many other slim ROG models, the GX531 does ship with an integrated camera — a genuine plus point worth noting when you list it.

Keyboard

Per-key RGB backlit keyboard shifted forward toward the front edge, with a side-mounted trackpad that doubles as a touch numpad. A magnetic wrist rest was included in the box.

Cooling (AAS)

Active Aerodynamic System with scissor-door hinges that open an extra intake vent as the lid lifts, plus an anti-dust thermal module — essential for cooling high-end chips in a sub-16mm body.

Build

All-metal chassis with a two-tone brushed-and-sandblasted lid and a glowing ROG logo. Among the thinnest 15-inch gaming laptops ever made at just 15.35–16.15mm.

Weight & dimensions

≈ 2.1 kg (4.63 lb); 360 × 268 × 15.35–16.15 mm (14.2" × 10.6" × 0.60"–0.64").

Frequently asked questions

01 How do I confirm my laptop is the GX531 and not a GX502, GX501, or GX701?
Read the model code on the underside label — this page covers the GX531 (any suffix: GM, GS, GV, GW, GX, GXR). The easiest way to separate it from the near-identical GX502 is a few physical tells: the GX531 is thinner (around 15.35mm), has a built-in webcam, uses Max-Q RTX graphics, and has a single SSD with no Ethernet jack — whereas the GX502 is thicker, has no webcam, uses full-wattage RTX chips, dual SSDs, and an RJ-45 port. The GX501 is the older 2017 original, and the GX701 is the 17-inch model. To date your GX531, check the CPU: an i7-8750H is the 2018 launch, an i7-9750H is the 2019 refresh. Our ASUS model-number guide shows exactly where to look.
02 Can I upgrade the RAM and storage, and does it affect my offer?
Partially. On the GX531, 8GB of RAM is soldered to the motherboard and cannot be removed — there is one open SO-DIMM slot, which caps total memory at 24GB (8GB soldered + a 16GB module). Storage is a single M.2 PCIe NVMe slot (no second slot and no RAID), user-accessible, so the drive can be swapped for higher capacity. When quoting, select the RAM and storage your machine has right now — added capacity can raise your offer.
03 Should I wipe my SSD or pull it before shipping?
Back up anything you want to keep to an external drive or the cloud, then sign out of Windows and any linked accounts before boxing the laptop. You don't need to open the chassis or pull the M.2 drive yourself — every device we receive goes through our certified, multi-pass data sanitation process. Full details are on our data erasure protocols page.
04 Which GX531 configurations raise my trade-in value the most?
The GPU and generation are the biggest drivers. A 2019 GX531GX with the RTX 2080 Max-Q, the i7-9750H, 24GB of RAM, a 1TB SSD, and the 240Hz panel commands the strongest offer; among the 2018 units, the GX531GS with the GTX 1070 Max-Q leads. Larger SSD capacity and the full 24GB memory each lift the final amount as well. If this is your first time selling a laptop online, our first-time seller guide explains what to expect from quote to payout.
05 How does the trade-in and payout process work?
Pick your configuration above for an instant quote, ship the laptop to us with our free, insured prepaid label, and once it arrives and passes component testing, payment is approved within two business days. You can be paid by PayPal, Venmo, Zelle, CashApp, or a mailed physical check. New here? See our how it works overview. Selling several machines at once or clearing out an office? Our bulk selling program handles multi-device trade-ins directly.