2021 ROG Flow X13 vs. 2021 ROG Zephyrus G15: Which is better?
Here is a side by side comparison between 2021 ROG Flow X13 and 2021 ROG Zephyrus G15 specs including CPU, RAM, storage, battery, display, and more.
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2021 ROG Flow X13 Pros
Reasons that 2021 ROG Flow X13 is better than 2021 ROG Zephyrus G15.
AMD Ryzen 9-5980HS inside 2021 ROG Flow X13 has a 8% better multi-core CPU performance score than the AMD Ryzen 9-5900HS inside 2021 ROG Zephyrus G15.
The 2021 ROG Flow X13 supports a faster memory speed than the 2021 ROG Zephyrus G15. It supports up to 4267MHz versus 3200MHz of system memory on the 2021 ROG Zephyrus G15.
The 2021 ROG Flow X13 weighed 2.87 pounds, 32% lighter than the 4.19 pounds 2021 ROG Zephyrus G15.
Weight | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
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Pound | 2.87 lbs. | 4.19 lbs. |
Kilogram | 1.30 kg | 1.90 kg |
2021 ROG Zephyrus G15 Pros
Reasons that 2021 ROG Zephyrus G15 is better than 2021 ROG Flow X13.
The 2021 ROG Zephyrus G15 supports a larger memory capacity than the 2021 ROG Flow X13. It supports up to 48GB versus 32GB of system memory on the 2021 ROG Flow X13.
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 2021 ROG Flow X13 since it has onboard memory.
Memory | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
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Slots | Onboard | x1 |
Type | LPDDR4X | DDR4 |
The 2021 ROG Zephyrus G15 has a 15.6-inch screen size 16% larger than the 13.4-inch 2021 ROG Flow X13.
The 2021 ROG Zephyrus G15 has more ports and slots count than the 2021 ROG Flow X13. It has ten versus six amount of ports and slots on the 2021 ROG Flow X13.
Ports | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
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HDMI | Yes | Yes |
headphone jack | Yes | Yes |
lock slot | No | Yes |
microSD card slot | No | Yes |
power port | No | Yes |
RJ-45 | No | Yes |
ROG XG Mobile Interface | Yes | No |
USB-A | Yes | Yes x2 |
USB-C | Yes x2 | Yes x2 |
Total | 6 | 10 |
The 2021 ROG Zephyrus G15 has better versatile I/O connectivity than the 2021 ROG Flow X13. It has seven versus four commonly used ports and slots on the 2021 ROG Flow X13.
Ports | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
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HDMI | Yes | Yes |
headphone jack | Yes | Yes |
USB-A | Yes | Yes |
USB-C | Yes | Yes |
microSD card slot | No | Yes |
power port | No | Yes |
RJ-45 | No | Yes |
Prices
Here are the latest price updates and offers for both devices.
Availability | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
Released | 2021 | 2021 |
Release Date | Announced on January 13, 2021 (CES 2021) | - |
Applicable Models | - |
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Generations |
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Exterior | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
Dimensions | 11.77 x 8.74 x 0.62” (299 x 222 x 15.8 mm) | 13.98” x 9.57” x 0.78” (355 x 243 x 19.9 mm) |
Weight | 2.87 lbs (1.30 kg) | 4.19 lbs (1.90 kg) |
Colors | Black | Eclipse Gray Moonlight White |
Keyboard and Trackpad |
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Display | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
Size | 13.4 Inches | 15.6 Inches |
Info |
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Ports | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
Left (4)
Right (2)
| Left (7)
Right (3)
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Internal Specs | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
Processor |
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Integrated Graphics |
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Memory | 16GB 32GB Dual-Channel LPDDR4X 4266MHz Onboard Memory | 16GB 32GB 48GB Dual-Channel DDR4 3200MHz Memory.1 x 16GB Onboard Memory and 1 x SODIMM slot |
Discrete Graphics | NVIDIA® GeForce® GTX 1650 4GB GDDR6 VRAM (With ROG Boost up to 1255MHz at 35W (40W with Dynamic Boost)). |
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Storage | 512GB 1TB M.2 NVMe PCIe 3.0 | 512GB 1TB 2TB M.2 NVMe PCIe 3.0.2 x M.2 SSD slots, supports RAID-0. |
Connectivity | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
Wi-Fi | Intel® Wi-Fi 6 with Gig+ performance (802.11ax) | Intel® Wi-Fi 6 with Gig+ performance (802.11ax) |
Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 |
Ethernet | - | Gigabit LAN Speed: 10/100/1000 Mbps. |
Battery | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
Size | 62 Wh 4-cell lithium-ion | 90 Wh (4-cell Lithium-ion) |
Battery Life | Up to 10 hours Video playback. | - |
Power Supply | 100W USB-C power adaptor |
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Software | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
OS |
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Built-in Apps | Armoury Crate GameVisual 1M Xbox Game Pass | Armoury Crate |
Camera & Audio | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
Camera | Front-facing camera Top-mount front camera, 0.92 Megapixels (1280 x 720 HD). | No Built-in camera. |
Audio |
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Misc | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
Inking | Supports ASUS Pen. | - |
Security | - |
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In the box | - |
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Key Features | 2021 ROG Flow X13 | 2021 ROG Zephyrus G15 |
At Glance |
Comparison Summary
ASUS has released the ROG Flow X13, a 13.4-inch machine, in early-2021. It is powered by up to an octa-core AMD Ryzen 9-5980HS with a boost clock speed up to 4.80 GHz. The laptop has a dedicated GPU option up to NVIDIA GeForce GTX 1650 with 4GB GDDR6.
On the other hand, we have the 15.6-inch ROG Zephyrus G15 was introduced by ASUS around the same time in early-2021. It comes with up to an octa-core AMD Ryzen 9-5900HS with a boost clock speed up to 4.60 GHz. It has a dedicated GPU option up to Nvidia GeForce RTX 3080 with 8GB GDDR6 80W TGP.
Geekbench 5 Single Core
Geekbench 5 Multi Core
The 2021 ROG Flow X13 has a 13.4-inch display which is considerably smaller than the 15.6-inch 2021 ROG Zephyrus G15. In addition, The 2021 ROG Flow X13 weighs 2.87 lbs. about 45% lighter than the 4.19 lbs. 2021 ROG Zephyrus G15. Moreover, measured at 11.77” x 8.74” x 0.62”, the 2021 ROG Flow X13 is much more portable than the 2021 ROG Zephyrus G15 at 13.98” x 9.57” x 0.78”.
There are a toal number of 6 ports and slots available on 2021 ROG Flow X13. That includes a ROG XG Mobile Interface, two USB-C ports, an HDMI port, a headphone jack, and a USB-A port. With that said, it has four ports and slots fewer than the 2021 ROG Zephyrus G15 that has two USB-C ports, two USB-A ports, an HDMI port, an RJ-45 port, a headphone jack, a power port, a microSD card slot, and a lock slot.
Moving over to upgradability, ASUS claims that the 2021 ROG Flow X13 supports up to 32GB 4267 MHz LPDDR4X memory. However, it has an onboard memory module that is not upgradable by the users.
For 2021 ROG Zephyrus G15, it supports up to 48GB 3200 MHz DDR4 memory that you can upgrade with one memory module slot 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.
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