ROG Zephyrus S15 GX502L vs. MSI GS66 Stealth: Which is better?

Here is a side by side comparison between ROG Zephyrus S15 GX502L and MSI GS66 Stealth specs including CPU, RAM, storage, battery, display, and more.

ROG Zephyrus S15 GX502L Pros

Reasons that ROG Zephyrus S15 GX502L is better than MSI GS66 Stealth.

About 5% lighter

ROG Zephyrus S15 GX502L weighed 4.40 pounds, 5% lighter than the 4.62 pounds MSI GS66 Stealth.

WeightROG Zephyrus S15 GX502LMSI GS66 Stealth
Pound
4.40 lbs.
4.62 lbs.
Kilogram
2.00 kg
2.10 kg

MSI GS66 Stealth Pros

Reasons that MSI GS66 Stealth is better than ROG Zephyrus S15 GX502L.

Supports larger memory

MSI GS66 Stealth supports a larger memory capacity than the ROG Zephyrus S15 GX502L. It supports up to 64GB versus 48GB of system memory on the ROG Zephyrus S15 GX502L.

Max system memory size
MSI GS66 Stealth
64 GB
ROG Zephyrus S15 GX502L
48 GB

Key Similars

Similar characteristics share between ROG Zephyrus S15 GX502L and MSI GS66 Stealth.

Similar CPU performance

Both laptops has a similar multi-core CPU performance score.

Geekbench 5 multi-core score
MSI GS66 Stealth - Intel Core i9-10980HK
7,013
ROG Zephyrus S15 GX502L - Intel Core i7-10875H
6,874
MSI GS66 Stealth - Intel Core i7-10875H
6,874
ROG Zephyrus S15 GX502L - Intel Core i7-10750H
5,412
MSI GS66 Stealth - Intel Core i7-10750H
5,412
Uses the same memory type and speed

Both laptops supports the same 3200MHz DDR4 RAM.

Memory type and speed
ROG Zephyrus S15 GX502L - DDR4
3,200 MHz
MSI GS66 Stealth - DDR4
3,200 MHz

Prices

Here are the latest price updates and offers for both devices.

ROG Zephyrus S15 GX502L Price
ASUS ROG Zephyrus S15 Gaming Laptop, 300Hz 15.6" FHD 3ms IPS Level, Intel Core i7-10875H, NVIDIA GeForce RTX 2080 Super, 32GB DDR4, 1TB RAID 0 SSD, Wi-Fi 6, Per-Key RGB, Windows 10 Pro, GX502LXS-XS79
ASUS ROG Zephyrus S15 Gaming Laptop, 300Hz 15.6" FHD 3ms IPS Level, Intel Core i7-10875H, NVIDIA GeForce RTX 2080 Super, 32GB DDR4, 1TB RAID 0 SSD, Wi-Fi 6, Per-Key RGB, Windows 10 Pro, GX502LXS-XS79
By ASUS
$1,298.00
ASUS 2023 ROG Zephyrus G16 Gaming Laptop, MUX Switch, 16” FHD 165Hz, Latest 10-Core i7-13620H CPU, RTX 4060 8GB GDDR6, Thin & Light, RGB, Win 11 H, W/Mouse Pad (32GB RAM | 2TB PCIe SSD)
ASUS 2023 ROG Zephyrus G16 Gaming Laptop, MUX Switch, 16” FHD 165Hz, Latest 10-Core i7-13620H CPU, RTX 4060 8GB GDDR6, Thin & Light, RGB, Win 11 H, W/Mouse Pad (32GB RAM | 2TB PCIe SSD)
By ASUS
$1,379.90
ASUS ROG Zephyrus G14 Gaming Laptop, MUX Switch, 14.0" QHD(2560 x 1440) 16:10 165Hz Display, AMD Ryzen 7 7735HS, GeForce RTX 4050 6GB GDDR6, Win 11 Home, w/Mouse Pad (16GB RAM |1TB PCIe SSD)
ASUS ROG Zephyrus G14 Gaming Laptop, MUX Switch, 14.0" QHD(2560 x 1440) 16:10 165Hz Display, AMD Ryzen 7 7735HS, GeForce RTX 4050 6GB GDDR6, Win 11 Home, w/Mouse Pad (16GB RAM |1TB PCIe SSD)
By ASUS
$1,156.99
MSI GS66 Stealth Price
MSI Stealth GS66 15.6” 240Hz Gaming Laptop: 12th Gen Intel Core i7, NVIDIA Geforce RTX 3070Ti, 32GB DDR5, 512GB NVMe SSD, Thunderbolt 4, Cooler Boost Trinity+, Win 11 PRO: Black 12UGS-246
MSI Stealth GS66 15.6” 240Hz Gaming Laptop: 12th Gen Intel Core i7, NVIDIA Geforce RTX 3070Ti, 32GB DDR5, 512GB NVMe SSD, Thunderbolt 4, Cooler Boost Trinity+, Win 11 PRO: Black 12UGS-246
By MSI
$1,249.99
$1,999.99 38% OFF
MSI Stealth GS66 Gaming Laptop 15.6" FHD 240Hz 12th Gen Intel 14-core i7-12700H 32GB RAM 1TB SSD GeForce RTX 3070 Ti 8GB Graphic RGB Backlit Thunderbolt4 Dynaudio 2.5GB Lan Win11Pro Black + HDMI Cable
MSI Stealth GS66 Gaming Laptop 15.6" FHD 240Hz 12th Gen Intel 14-core i7-12700H 32GB RAM 1TB SSD GeForce RTX 3070 Ti 8GB Graphic RGB Backlit Thunderbolt4 Dynaudio 2.5GB Lan Win11Pro Black + HDMI Cable
By MSI
$1,479.00
MSI Stealth GS66 Gaming Laptop | 15.6" FHD 240Hz | Intel 14-core i7-12700H | 64GB DDR5 4TB SSD | GeForce RTX 3070 Ti 8GB | RGB Backlit Thunderbolt4 Dynaudio 2.5GB Ethernet Win11Pro Black + HDMI Cable
MSI Stealth GS66 Gaming Laptop | 15.6" FHD 240Hz | Intel 14-core i7-12700H | 64GB DDR5 4TB SSD | GeForce RTX 3070 Ti 8GB | RGB Backlit Thunderbolt4 Dynaudio 2.5GB Ethernet Win11Pro Black + HDMI Cable
By MSI
$1,799.00

Availability

ROG Zephyrus S15 GX502LMSI GS66 Stealth
Released20202020

Exterior

ROG Zephyrus S15 GX502LMSI GS66 Stealth
Dimensions14.17” x 9.92” x 0.74” (360 x 252 x 18.9 mm)14.10” x 9.76” x 0.72 ~ 0.79” (358.3 x 248 x 18.3 ~ 19.8 mm)
Weight4.40 lbs (2.0 kg)4.62 lbs (2.1 kg)
Colors
Brushed Black
-
Keyboard and Trackpad
  • Backlit chiclet keyboard
  • Per-key RGB lighting
  • Aura Sync
  • Hotkeys: Volume up / Volume down / Microphone mute / ROG Armoury Crate
  • N key rollover
  • Per-Key RGB gaming keyboard by SteelSeries
  • Silky smooth touchpad with multi-touch gesture

Display

ROG Zephyrus S15 GX502LMSI GS66 Stealth
Size15.6 Inches15.6 Inches
Info15.6-inch Non-glare Full HD (1920 x 1080) IPS-level panel, 300Hz, 3ms, 100% sRGB, Pantone® Validated, G-SYNC™
  • 15.6" UHD (3840x2160), IPS-Level
  • 15.6" FHD (1920x1080), 240Hz, IPS-Level
  • 15.6" FHD (1920x1080), 300Hz, IPS-Level

Ports

ROG Zephyrus S15 GX502LMSI GS66 Stealth
ROG Zephyrus S15 GX502L Ports
Image Source: ASUS
  • 1 x Thunderbolt™ 3 with USB 3.2 Gen 2 Type-C
    DisplayPort™ 1.4 and Power Delivery.
  • 1 x USB 3.2 Gen 2 Type-A
  • 2 x USB 3.2 Gen 1 Type-A
  • 1 x HDMI 2.0b
  • 1 x 3.5mm Audio jack (ESS Hi-Fi DAC)
  • 1 x Audio jack mic-in
  • 1 x Kensington lock
  • 1 x RJ-45 jack
MSI GS66 Stealth Ports
Image Source: MSI
Left (4)
  • 1 x Thunderbolt 3
    40 Gpbs, USB 3.2 Gen 2 (10 Gbps), DisplayPort, Power Delivery
  • 1 x USB-A
    USB 3.2 Gen 2 (10 Gbps)
  • 1 x HDMI
    4K@60Hz
  • 1 x power port
Right (5)
  • 1 x USB-C
    USB 3.2 Gen 2 (10 Gbps)
  • 2 x USB-A
    USB 3.2 Gen 2 (10 Gbps)
  • 1 x RJ-45
    1 Gbps
  • 1 x headphone jack
    Headphone/Microphone

Internal Specs

ROG Zephyrus S15 GX502LMSI GS66 Stealth
Processor
  1. 10th Gen Intel® Core™ i7-10750H
    6 cores, 12 threads, 2.60 → 5.00 GHz, 12MB SmartCache, 45W
  2. 10th Gen Intel® Core™ i7-10875H
    8 cores, 16 threads, 2.30 → 5.10 GHz, 16MB SmartCache, 45W
  1. 10th Gen Intel® Core™ i7-10750H
    6 cores, 12 threads, 2.60 → 5.00 GHz, 12MB SmartCache, 45W
  2. 10th Gen Intel® Core™ i7-10875H
    8 cores, 16 threads, 2.30 → 5.10 GHz, 16MB SmartCache, 45W
  3. 10th Gen Intel® Core™ i9-10980HK
    8 cores, 16 threads, 2.40 → 5.30 GHz, 16MB SmartCache, 45W
Integrated Graphics
  1. 10th Gen Intel® Core™ i7-10750H
    Intel® UHD Graphics 630
    24 Execution Units, 350 → 1150 MHz
  2. 10th Gen Intel® Core™ i7-10875H
    Intel® UHD Graphics 630
    24 Execution Units, 350 → 1200 MHz
  1. 10th Gen Intel® Core™ i7-10750H
    Intel® UHD Graphics 630
    24 Execution Units, 350 → 1150 MHz
  2. 10th Gen Intel® Core™ i7-10875H
    Intel® UHD Graphics 630
    24 Execution Units, 350 → 1200 MHz
  3. 10th Gen Intel® Core™ i9-10980HK
    Intel® UHD Graphics 630
    24 Execution Units, 350 → 1250 MHz
MemoryUp to 48GB DDR4 3200MHz SDRAMUp to 64GB 3200MHz Dual-channel DDR4 SDRAM
2 x SO-DIMM slots.
Discrete Graphics
ASUS ROG Zephyrus S15 GX502LWS
  • NVIDIA® GeForce® RTX 2070 SUPER™
    8GB GDDR6 VRAM (Boost Clock: 1480MHz, 115W).
ASUS ROG Zephyrus S15 GX502LXS
  • NVIDIA® GeForce® RTX 2080 SUPER™
    8GB GDDR6 VRAM (Boost Clock: 1330MHz, 90W).
GS66 Stealth 10SGS
  • NVIDIA® GeForce® RTX 2080 SUPER™ With Max-Q Design
    Video memory: 8GB GDDR6 VRAM.
GS66 Stealth 10SFS
  • NVIDIA® GeForce® RTX 2070 SUPER™ With Max-Q Design
    Video memory: 8GB GDDR6 VRAM.
GS66 Stealth 10SF
  • NVIDIA® GeForce RTX™ 2070 With Max-Q Design
    Video memory: 8GB GDDR6 VRAM.
GS66 Stealth 10SE
  • NVIDIA® GeForce RTX™ 2060
    Video memory: 6GB GDDR6 VRAM.
GS66 Stealth 10SD
  • NVIDIA® GeForce® GTX 1660 Ti
    Video memory: 6GB GDDR6 VRAM.
Storage
512GB 1TB
M.2 NVMe PCIe 3.0 with RAID 0 support
  • 1x M.2 SSD slot (NVMe PCIe Gen3)
  • 1x M.2 SSD Combo slot (NVMe PCIe Gen3 / SATA)

Connectivity

ROG Zephyrus S15 GX502LMSI GS66 Stealth
Wi-FiIntel® Wi-Fi 6 with Gig+ performance (802.11ax)802.11 AX Wi-Fi 6
BluetoothBluetooth 5.1Bluetooth 5.1
Ethernet
  • Gigabit LAN
    Speed: 10/100/1000 Mbps.
  • Killer Gigabit LAN
    Speed: 10/100/1000 Mbps.

Battery

ROG Zephyrus S15 GX502LMSI GS66 Stealth
Size-99.9 Wh (4-cell Li-Polymer battery)
Battery LifeUp to 8.3 hours of 1080p video playback.-
Power Supply240W power adaptor
Support Type-C PD 3.0 up to 65W.
MSI GS66 Stealth 10SD/SE
  • 180W slim power adapter
MSI GS66 Stealth 10SF/SFS/SGS
  • 230W slim power adapter

Software

ROG Zephyrus S15 GX502LMSI GS66 Stealth
OS
  • Windows 10 Home
  • Windows 10 Pro
Windows 10 Home
Built-in Apps
Armoury Crate GameFirst VI GameVisual Sonic Studio III
-

Camera & Audio

ROG Zephyrus S15 GX502LMSI GS66 Stealth
Camera
  • No Built-in camera.
  • Support external ROG GC21 camera support 1080p@60Hz.
  • Front-facing camera
    720p (1280 x 720 HD) camera.
  • IR camera for Windows Hello support.
Audio
  • 2 speakers with Smart AMP technology
  • Array Microphones
  • 2x 2W Speaker
  • Sound by Dynaudio and Duo wave speaker
  • Array Microphone

Misc

ROG Zephyrus S15 GX502LMSI GS66 Stealth
Security
  • Kensington lock slot
  • Enterprise-grade protection with Windows Hello face sign-in

Key Features

ROG Zephyrus S15 GX502LMSI GS66 Stealth
At Glance
Released in
2020
16:9 FHD
15.6”
1080p 300Hz
Weight
4.40 lb
2.00 kg
Up to
Intel Core i7-10875H
8C/16T, 2.30 → 5.10 GHz
Geekbench 5
1,192
Single Core
Geekbench 5
6,874
Multi-Core
With integrated
Intel® UHD Graphics 630
24 Execution Units, 350 → 1200 MHz
Up to
48GB
3200 MHz DDR4
ROG Zephyrus S15 GX502L Ports
Nvidia GeForce
RTX 2080 SUPER
8GB GDDR6
Released in
2020
16:9 FHD
15.6”
1080p 300Hz
Weight
4.62 lb
2.10 kg
Up to
Intel Core i9-10980HK
8C/16T, 2.40 → 5.30 GHz
Geekbench 5
1,223
Single Core
Geekbench 5
7,013
Multi-Core
With integrated
Intel® UHD Graphics 630
24 Execution Units, 350 → 1250 MHz
Upgradable up to
64GB
3200 MHz DDR4
MSI GS66 Stealth Ports
NVIDIA GeForce
RTX 2080 SUPER
8GB GDDR6 with Max-Q

Comparison Summary

ROG Zephyrus S15 GX502L vs. MSI GS66 Stealth

ASUS has released the ROG Zephyrus S15 GX502L, a 15.6-inch machine, in 2020. It is powered by up to an octa-core Intel Core i7-10875H with a boost clock speed up to 5.10 GHz. The laptop has a dedicated GPU option up to Nvidia GeForce RTX 2080 SUPER with 8GB GDDR6.

On the other hand, we have the 15.6-inch GS66 Stealth was introduced by MSI around the same time in 2020. It comes with up to an octa-core Intel Core i9-10980HK with a boost clock speed up to 5.30 GHz. It has a dedicated GPU option up to NVIDIA GeForce RTX 2080 SUPER with 8GB GDDR6 with Max-Q.

Geekbench 5 Single Core

ROG Zephyrus S15 GX502L1
10th Gen Intel® Core™ i7-10750H1,13492.72%
2
10th Gen Intel® Core™ i7-10875H1,19297.47%
MSI GS66 Stealth1
10th Gen Intel® Core™ i7-10750H1,13492.72%
2
10th Gen Intel® Core™ i7-10875H1,19297.47%
3
10th Gen Intel® Core™ i9-10980HK1,223100.00%
01,223

Geekbench 5 Multi Core

ROG Zephyrus S15 GX502L1
10th Gen Intel® Core™ i7-10750H5,41277.17%
2
10th Gen Intel® Core™ i7-10875H6,87498.02%
MSI GS66 Stealth1
10th Gen Intel® Core™ i7-10750H5,41277.17%
2
10th Gen Intel® Core™ i7-10875H6,87498.02%
3
10th Gen Intel® Core™ i9-10980HK7,013100.00%
07,013

Both ROG Zephyrus S15 GX502L and MSI GS66 Stealth have the same 15.6-inch display size. In addition, The ROG Zephyrus S15 GX502L weighs 4.40 lbs. about 5% lighter than the 4.62 lbs. MSI GS66 Stealth. Moreover, measured at 14.17” x 9.92” x 0.74”, the ROG Zephyrus S15 GX502L is slightly more portable than the MSI GS66 Stealth at 14.10” x 9.76” x 0.77”.

ROG Zephyrus S15 GX502LMSI GS66 Stealth

Moving over to upgradability, ASUS claims that the ROG Zephyrus S15 GX502L supports up to 48GB 3200 MHz DDR4 memory. It also comes with two M.2 slots that users can easily upgrade and install an additional SSD to expand the storage on the device.

For MSI GS66 Stealth, it supports up to 64GB 3200 MHz DDR4 memory that you can upgrade with two memory module slots on the motherboard. It also has two M.2 slots that users can easily swap or add an extra SSD to get extra space when needed. Besides that, it also comes with a SATA slot where you can install an additional 2.5-inch SATA-based SSD, SSHD, or a hard disk drive.

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