GA502IU-ES76 vs GA502IV-XS76 review.
Before we start off, it is important to know about this outline. The 2020 ASUS ROG Zephyrus G15 comes with different configurations. For more info check out their official page.
However, this post covers these specific models; the GA502IV-XS76 with RTX 2060 unit and the GA502IU-ES76 1660 Ti model.
In terms of design, both of these models are lightweight and compact gaming laptops. They have the same dimension, same screen size, and peripherals as well as other features.
GA502IU-ES76 vs GA502IV-XS76 Differences
These are the main differences between the two 15-inch gaming laptops. Check this page out if you search for a 17-inch gaming laptop.
GA502IU-ES76 Price
The GA502IU model that comes with 1660 Ti is $100 cheaper (Price can change over time.)

ROG Zephyrus G15 (2020) Ultra Slim Gaming Laptop, 15.6” 144Hz FHD, GeForce GTX 1660 Ti, AMD Ryzen 7 4800HS, 16GB DDR4, 1TB PCIe NVMe SSD, Windows 10, GA502IU-ES76
Graphics
GA502IV-XS76 has better GPU which is the NVIDIA GeForce RTX 2060 Graphics for gaming. The GA502IU comes with the GTX 1660ti.
Operating System
GA502IV’s operating system, the Windows 10 Pro has more features and considerably better than the Windows 10 Home OS from the GA502IU-ES76
Screen
The screen on the GA502IV is better. It has a 240Hz refresh rate vs 144Hz.
Comparing the Main Specs
These are the main specification difference between the GA502IU-ES76 and GA502IV-XS76
Product | GA502IU-ES76 | GA502IV-XS76 |
Screen | ||
AMD Ryzen 7 4800HS Processor | √ | √ |
RAM ((3200MHz DDR4) | 16GB | 16GB |
Storage (PCIe NVMe M.2 SSD) | 1TB | 1TB |
Graphics (NVIDIA GeForce) | GTX 1660 Ti | RTX 2060 |
Supports Ray-Tracing? | No | Yes |
Screen Refresh Rates | 144Hz | 240Hz |
Pros & Cons | VIEW | VIEW |
Which one to choose?

From the comparison summary above, we see the outlines of the GA502IV-XS76 vs GA502IU-ES76 showdown.
The GA502IV-XS76 has the higher-tier Graphics, which is the RTX 2060. It performs faster and supports the Ray Tracing and many other features that the 1660ti does not have.
However, the GA502IU, due to its GTX 1660 Ti Graphics, which is also a powerful GPU, is more efficient in terms of power consumption.
So if you want to have a better screen and better GPU GA502IV-XS76 is the option.
But if you want a cheaper laptop from the two, and want to have a better battery life, go with the GA502IU-ES76.