ASUS ROG Zephyrus G16 GU603ZU
Laptop, from 2023 3 hardware reports
Memory
Up to 48 GB
2 slots
SSD and charger
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 48 GB seen working.
It takes DDR4-3200 sticks (DIMM/SODIMM).
- Slots
- 2 DIMM/SODIMM slots
- Type
- DDR4-3200 DIMM/SODIMM
- Most seen working
- 48 GB; one machine runs 48 GB
- Firmware says
- 64 GB maximum
- How sure
- 2 of 3 reports show this layout
See 16 GB DDR4-3200 DIMM/SODIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 3 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
2 slots
Illustration Questions
Can I upgrade the RAM in the ASUS ROG Zephyrus G16 GU603ZU?
Yes. 2 slots, up to 48 GB seen working. It takes DDR4-3200 sticks (DIMM/SODIMM).
What type of RAM does the ASUS ROG Zephyrus G16 GU603ZU use?
DDR4-3200 sticks (DIMM/SODIMM).
Is this my laptop?
Check the model name on the label underneath. It should read ROG Zephyrus G16 GU603ZU.