Asus ROG Zephyrus G15 GA503 RTX 3080 (2021) vs MSI GS66 Stealth Intel RTX 3070 (2021)
What ROG Zephyrus G15 GA503 RTX 3080 (2021) does better (8) and where GS66 Stealth Intel RTX 3070 (2021) wins (13) — every spec side by side.
vs
6.3Graphics6.0
4.3Overall performance4.1
2.7Display4.6
7.5Memory & storage8.5
7.0Battery & portability7.5
2.4Features & cooling3.1
Dimensions
Size comparison
ROG Zephyrus G15 GA503 RTX 3080 (2021)GS66 Stealth Intel RTX 3070 (2021)
| ROG Zephyrus G15 GA503 RTX 3080 (2021) | GS66 Stealth Intel RTX 3070 (2021) | Difference | |
|---|---|---|---|
| Depth | 243 mm | 248 mm | −5 mm |
| Width | 355 mm | 358.3 mm | −3.3 mm |
| Thickness | 19.9 mm | 19.8 mm | +0.1 mm |
| Weight | 1.9 kg | 2.1 kg | −0.2 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is ROG Zephyrus G15 GA503 RTX 3080 (2021) better than GS66 Stealth Intel RTX 3070 (2021)?
- GPU compute (FP32)16.7 TFLOPS vs 14.4 TFLOPS+16%
- 3DMark Steel Nomad Light10,271 vs 9,195+12%
- Weight1.9 kg vs 2.1 kg+11%
- SD card readerYes · GS66 Stealth Intel RTX 3070 (2021): No
- Dolby AtmosYes · GS66 Stealth Intel RTX 3070 (2021): No
- GPU shader cores6,144 vs 5,120+20%
- Cinebench 2024 multi-core594 vs 522+14%
- Key travel1.7 mm vs 1.5 mm+13%
Why is GS66 Stealth Intel RTX 3070 (2021) better than ROG Zephyrus G15 GA503 RTX 3080 (2021)?
- Refresh rate144 Hz vs 240 Hz+67%
- MUX switchNo · ROG Zephyrus G15 GA503 RTX 3080 (2021): Yes
- Thunderbolt or USB4No · ROG Zephyrus G15 GA503 RTX 3080 (2021): Yes
- GPU power (TGP)80 W vs 95 W+19%
- Battery capacity90 Wh vs 100 Wh+11%
- RAM (up to)48 GB vs 64 GB+33%
- Geekbench 6 multi-core7,424 vs 8,995+21%
- RAM (base)8 GB vs 16 GB2×
- IR camera (face login)No · ROG Zephyrus G15 GA503 RTX 3080 (2021): Yes
- Cooling fans2 vs 3+50%
- USB-A ports2 vs 3+50%
- Max. supported RAM48 GB vs 64 GB+33%
Specifications
Side by side
| Graphics | ||
| Graphics card | GeForce RTX 3080 Laptop | GeForce RTX 3070 Laptop |
| GPU maker | NVIDIA | NVIDIA |
| GPU power (TGP) | 80 W | 95 W |
| Video memory | 8 GB | 8 GB |
| Video memory type | GDDR6 | GDDR6 |
| GPU shader cores | 6,144 | 5,120 |
| GPU compute (FP32) | 16.7 TFLOPS | 14.4 TFLOPS |
| 3DMark Steel Nomad Light | 10,271 | 9,195 |
| Processor | ||
| Processor | Ryzen 7 5800HS | Core i7-11800H |
| CPU maker | AMD | Intel |
| CPU cores | 8 | 8 |
| CPU threads | 16 | 16 |
| Max CPU clock | 4.4 GHz | 4.6 GHz |
| Processor options | Ryzen 7 5800HS, Ryzen 9 5900HS | Core i7-11800H, Core i9-11900H, Core i9-11980HK |
| Geekbench 6 multi-core | 7,424 | 8,995 |
| Geekbench 6 single-core | 1,968 | 1,958 |
| Cinebench 2024 multi-core | 594 | 522 |
| Display | ||
| Screen size | 15.6″ | 15.6″ |
| Resolution | 1920 × 1080 | 1920 × 1080 |
| Resolution class | Full HD (1080p/1200p) | Full HD (1080p/1200p) |
| Refresh rate | 144 Hz | 240 Hz |
| Panel type | IPS | IPS |
| Brightness | 300 nits | 300 nits |
| sRGB coverage | 62% | — |
| Response time | — | 3 ms |
| Pixel density | 141 ppi | 141 ppi |
| Aspect ratio | 16:9 | 16:9 |
| G-Sync / FreeSync | Yes | Yes |
| Advanced Optimus | No | No |
| MUX switch | No | Yes |
| HDR | No | No |
| Touchscreen | No | No |
| Memory & storage | ||
| RAM (up to) | 48 GB | 64 GB |
| RAM (base) | 8 GB | 16 GB |
| RAM type | DDR4 | DDR4 |
| RAM speed | 3,200 MHz | 3,200 MHz |
| Max. supported RAM | 48 GB | 64 GB |
| RAM slots | 1 | 2 |
| Upgradable RAM | Yes | Yes |
| SSD (up to) | 4,096 GB | 4,096 GB |
| SSD (base) | 512 GB | 512 GB |
| M.2 SSD slots | 2 | 2 |
| SSD interface | PCIe 3.0 x4 | PCIe 4.0 x4 |
| Battery & power | ||
| Battery capacity | 90 Wh | 100 Wh |
| Power adapter | 200 W | 230 W |
| USB-C charging (Power Delivery) | Yes | Yes |
| Design & cooling | ||
| Weight | 1.9 kg | 2.1 kg |
| Thickness | 19.9 mm | 19.8 mm |
| Width | 355 mm | 358.3 mm |
| Depth | 243 mm | 248 mm |
| Body material | Aluminium | Aluminium |
| Colours | White, Black, Gray | Black |
| Cooling fans | 2 | 3 |
| Vapor chamber cooling | No | No |
| Liquid metal (CPU) | Yes | — |
| Fan noise (max. load) | 51 dB | — |
| Ports & wireless | ||
| Thunderbolt / USB4 | — | Thunderbolt 4 |
| Thunderbolt or USB4 | No | Yes |
| USB-C ports | 2 | 2 |
| USB-A ports | 2 | 3 |
| HDMI | HDMI 2.0 | HDMI 2.0 |
| HDMI 2.1 | No | No |
| (Mini) DisplayPort | No | No |
| Ethernet port | Yes | Yes |
| SD card reader | Yes | No |
| 3.5 mm audio jack | Yes | Yes |
| Wi-Fi standard | Wi-Fi 6 | Wi-Fi 6 |
| Bluetooth | 5.2 | 5.2 |
| Keyboard & camera | ||
| Backlit keyboard | Yes | Yes |
| Numeric keypad | No | No |
| Key travel | 1.7 mm | 1.5 mm |
| Webcam | — | 720p |
| IR camera (face login) | No | Yes |
| Fingerprint reader | — | No |
| Audio | ||
| Speakers | 2.2 | 2.0 |
| Dolby Atmos | Yes | No |
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