Surface Book 3 15” vs. 2021 ROG Zephyrus G15: Full specs comparison
We have comprehensively compared the specifications for the Surface Book 3 15” and 2021 ROG Zephyrus G15 models. The report includes detailed information regarding both models' CPU, memory, storage, battery life, display quality, and other features.
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Surface Book 3 15” Pros
Reasons that Surface Book 3 15” is better than 2021 ROG Zephyrus G15.
Supports faster memory
Surface Book 3 15” supports a faster memory speed than the 2021 ROG Zephyrus G15. It supports up to 3733MHz versus 3200MHz of system memory on the 2021 ROG Zephyrus G15.
Memory type and speed
Surface Book 3 15” - LPDDR4X
3,733 MHz
2021 ROG Zephyrus G15 - DDR4
3,200 MHz
2021 ROG Zephyrus G15 Pros
Reasons that 2021 ROG Zephyrus G15 is better than Surface Book 3 15”.
Newer manufacturing
2021 vs. 2020
Much faster CPU performance
AMD Ryzen 9-5900HS inside 2021 ROG Zephyrus G15 has a 92% better multi-core CPU performance score than the Intel Core i7-1065G7 inside Surface Book 3 15”.
Geekbench 5 multi-core score
2021 ROG Zephyrus G15 - AMD Ryzen 9-5900HS
7,162
2021 ROG Zephyrus G15 - AMD Ryzen 7-5800HS
6,454
Surface Book 3 15” - Intel Core i7-1065G7
3,722
Supports larger memory
The 2021 ROG Zephyrus G15 supports a larger memory capacity than the Surface Book 3 15”. It supports up to 48GB versus 32GB of system memory on the Surface Book 3 15”.
Max system memory size
2021 ROG Zephyrus G15
48 GB
Surface Book 3 15”
32 GB
Upgradable memory
The 2021 ROG Zephyrus G15 comes with one SODIMM slot that allow you to replace or upgrade when needed. On the flip side, you can't upgrade RAM on the Surface Book 3 15” since it has onboard memory.
| Memory | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
|---|---|---|
| Slots | Onboard | x1 |
| Type | LPDDR4X | DDR4 |
Has three more ports and slots
The 2021 ROG Zephyrus G15 has more ports and slots count than the Surface Book 3 15”. It has ten versus seven amount of ports and slots on the Surface Book 3 15”.
| Ports | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
|---|---|---|
| full-size SD card slot | Yes | No |
| HDMI | No | Yes |
| headphone jack | Yes | Yes |
| lock slot | No | Yes |
| microSD card slot | No | Yes |
| power port | Yes x2 | Yes |
| RJ-45 | No | Yes |
| USB-A | Yes x2 | Yes x2 |
| USB-C | Yes | Yes x2 |
| Total | 7 | 10 |
More versatile connectivity
The 2021 ROG Zephyrus G15 has better versatile I/O connectivity than the Surface Book 3 15”. It has seven versus five commonly used ports and slots on the Surface Book 3 15”.
| Ports | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
|---|---|---|
| headphone jack | Yes | Yes |
| power port | Yes | Yes |
| USB-A | Yes | Yes |
| USB-C | Yes | Yes |
| full-size SD card slot | Yes | No |
| HDMI | No | Yes |
| microSD card slot | No | Yes |
| RJ-45 | No | Yes |
Prices
Here are the latest price updates and offers for both devices.
Availability | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
| Released | 2020 | 2021 |
| Release Date |
| - |
| Pricing | For Consumer
| - |
| Applicable Models | - |
|
| Generations |
|
Exterior | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
| Dimensions | 13.5” x 9.87” x 0.568-0.90” (343 mm x 251 mm x 15 mm-23 mm) | 13.98” x 9.57” x 0.78” (355 x 243 x 19.9 mm) |
| Weight |
| 4.19 lbs (1.90 kg) |
| Colors | Platinum | Eclipse Gray Moonlight White |
| Keyboard and Trackpad |
|
|
Display | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
| Size | 15 Inches | 15.6 Inches |
| Info |
|
|
Ports | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
 Left (3)
Right (3)
Bottom (1)
|  Left (7)
Right (3)
|
Internal Specs | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
| Processor |
|
|
| Integrated Graphics |
|
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| Memory | 16GB 32GB 3733 MHz LPDDR4x | 16GB 32GB 48GB Dual-Channel DDR4 3200MHz Memory.1 x 16GB Onboard Memory and 1 x SODIMM slot |
| Discrete Graphics |
|
|
| Storage | 256 GB 512 GB 1 TB 2TB PCIe SSD | 512GB 1TB 2TB M.2 NVMe PCIe 3.0.2 x M.2 SSD slots, supports RAID-0. |
Connectivity | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
| Wi-Fi |
| Intel® Wi-Fi 6 with Gig+ performance (802.11ax) |
| Bluetooth |
| Bluetooth 5.0 |
| Ethernet | - | Gigabit LAN Speed: 10/100/1000 Mbps. |
| More |
| - |
Battery | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
| Size |
| 90 Wh (4-cell Lithium-ion) |
| Battery Life | Up to 17.5 hours of typical device usage | - |
| Power Supply | 127W Surface Power Supply with USB-A (7W) charging port. |
|
Software | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
| OS |
|
|
| Built-in Apps | Microsoft Office 365 30-days trial | Armoury Crate |
Camera & Audio | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
| Camera |
| No Built-in camera. |
| Audio |
|
|
Misc | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
| Inking | Supports Surface Pen 4096 levels of pressure Tilt sensing Best in class latency Paper feel 0.1mm precision | - |
| Sensors |
| - |
| Security |
|
|
| In the box |
|
|
| Warranty | One-year limited hardware warranty | - |
| More | Supports Surface Dial Supports both on-screen and off-screen interaction. | - |
Key Features | Surface Book 3 15” | 2021 ROG Zephyrus G15 |
| At Glance | | |
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