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ASUS ROG Zephyrus G16 GU603

Processor:

Graphics Card:

Cosmetic Condition:

Functionality:

Charger Included?

The ASUS ROG Zephyrus G16 GU603 is a 2023 16-inch gaming laptop built for players and creators who want desktop-class graphics without carrying a brick. ASUS paired a 13th Gen Intel Core chip with NVIDIA RTX 40-series graphics inside a chassis thin enough to pass as a general-purpose ultrabook, which is why it still commands attention on the resale market: buyers looking for a portable RTX rig have few thinner options. Variants circulate under model numbers like GU603VI, GU603VV, GU603VU and GU603ZU, each tied to a specific processor and GPU pairing. Pick your processor, graphics card and condition in the picker above for an instant cash offer. If you want the full breakdown of how the offer is calculated and paid, see how the process works, and if you have another machine to move, browse how to sell your ASUS laptop.

Confirm you have the GU603

The fastest way to confirm your exact configuration is through Windows itself. Press Windows key + R, type msinfo32, and press Enter to see the full model string, BIOS version and installed RAM. For a quicker GPU and CPU check, open the MyASUS app, which lists both under the system status tab. The model number is also printed on the bottom sticker, though on a used unit it may be worn.

GU603VI

  • 13th Gen Intel Core, higher-tier configuration
  • Commonly paired with RTX 4070 graphics
  • Sold as GU603VI-G16.I74070 in some retail listings

GU603VV

  • 13th Gen Intel Core processor
  • Commonly paired with RTX 4060 graphics
  • Sold as GU603VV-G16.I74060 in some retail listings

GU603VU / GU603ZU

  • 13th Gen Intel Core processor
  • Typically the RTX 4050 configuration
  • Entry point into the G16 line for this generation

Prefer a visual check? The GU603 has a dark gray lid with the ROG logo etched near one corner, a 16:10 display with thin bezels, and a keyboard deck with an offset numpad-free layout. If you see a visible AniMe Matrix dot-matrix panel on the lid, you have a different Zephyrus model, not the GU603.

Core hardware configurations

Processor

  • 13th Gen Intel Core i7, H-series mobile chip
  • 13th Gen Intel Core i9, H-series mobile chip
  • The i9 configuration holds resale value best

Graphics

  • NVIDIA RTX 4050 laptop GPU
  • NVIDIA RTX 4060 laptop GPU
  • NVIDIA RTX 4070 laptop GPU
  • GPU tier is the single biggest driver of trade-in value

Memory

  • LPDDR5 memory, soldered to the motherboard
  • Not user-upgradable after purchase
  • Confirm capacity in msinfo32 before listing your quote

Storage

  • PCIe 4.0 M.2 SSD
  • One accessible M.2 slot on most builds, so capacity can be upgraded
  • Larger factory capacities add value over a base drive

Display & audio

Display

The GU603 uses a 16-inch, 16:10 ROG Nebula display with a fast refresh rate suited to competitive play. Screen condition, especially dead pixels or lid flex marks, has a noticeable effect on the offer.

Audio

A multi-speaker array with Dolby Atmos support handles both gaming audio and media playback. Speaker grilles sit along the front edge of the chassis, so check for grille damage before shipping.

Security

A fingerprint reader is built into the power button for Windows Hello sign-in. There is no IR camera for facial recognition on this model.

Ports & connectivity

The GU603 keeps a full set of physical ports despite its thin profile, which is worth checking for bent pins or dust buildup before you send it in.

Wired
  • USB-C with Thunderbolt 4 support
  • USB-C with DisplayPort and power delivery
  • USB-A 3.2 ports
  • HDMI 2.1 output
  • 3.5mm combo audio jack
Wireless
  • Wi-Fi 6E
  • Bluetooth 5.3

RTX 40-series graphics Thunderbolt 4 HDMI 2.1 Wi-Fi 6E 16:10 display Fingerprint login Dolby Atmos audio

Battery, build & more

Battery

A large multi-cell battery is built in and non-removable in normal use. Cycle count and swelling are the two conditions buyers should flag, since a swollen battery affects both function and shipping safety.

Build

The chassis is CNC-milled aluminum in a dark gray finish, thin enough to travel easily for a 16-inch gaming machine. Hinge stress marks near the display and worn corner edges are the most common condition issues on trade-ins.

Software

Ships with Windows and the MyASUS utility for driver updates, performance profiles and system diagnostics. A clean Windows reinstall before sale removes any leftover ROG Armoury Crate profiles.

Market positioning

The GU603 sits in the premium tier of gaming laptops, and demand tracks the GPU installed more than the CPU. A well-kept i9 / RTX 4070 unit holds value noticeably better than a base i7 / RTX 4050 build.

Frequently asked questions

01 How do I find the model number and exact configuration?
Press Windows key + R, type msinfo32, and press Enter to see the model string, BIOS version and installed RAM in one screen. The MyASUS app shows the CPU and GPU under its system status tab, which is faster if you just need the graphics tier. The physical model sticker on the underside also lists the number, though it can wear off on an older or well-used unit. If none of these are readable, our device model finder can help narrow it down from other identifiers.
02 How do I tell it apart from the newer Zephyrus G16 GU605?
Check the model number first, since both generations share the Zephyrus G16 name. The GU603 is the 2023 model with 13th Gen Intel Core processors and RTX 40-series graphics, while the GU605 is a later refresh with a different processor generation and chassis details. msinfo32 or the bottom sticker will show GU603 or GU605 directly, which settles it faster than comparing looks.
03 Can I sell it with damage, a weak battery, or a locked account?
Yes, most cracked screens, dead batteries, and units that will not power on still qualify for a quote, and you can select the matching condition in the picker above. What we cannot accept is a laptop still locked to a Microsoft account or protected by BitLocker without the recovery key, since that leaves the machine unusable to the next owner. Remove your Microsoft account and suspend BitLocker before shipping, and the rest of the damage just adjusts the offer rather than blocking it.
04 What raises the trade-in value the most?
The GPU tier matters most, since an RTX 4070 configuration is worth noticeably more than an RTX 4050 unit in the same physical condition. After that, a healthy battery, an undamaged display, and original packaging with the charger all move the offer higher. A clean factory reset with no leftover accounts also speeds up processing, since the device does not need extra verification before testing.
05 How do I erase it and get paid?
Go to Settings → System → Recovery → Reset this PC and choose to remove everything. Before that, sign out of and remove the device from your Microsoft account under Settings → Accounts, and suspend BitLocker if it is enabled so the reset completes cleanly. Once the reset finishes, print the free prepaid shipping label we send, pack the laptop and charger, and ship it in; shipping is free and insured. After our team tests the unit against the condition you selected, payment goes out by PayPal, Venmo, Zelle, CashApp or check. Full step-by-step guidance is in our data erasure protocols.