2021 ROG Flow X13 vs. Alienware M15 R5: Which is better?

Here is a side by side comparison between 2021 ROG Flow X13 and Alienware M15 R5 specs including CPU, RAM, storage, battery, display, and more.

2021 ROG Flow X13 Pros

Reasons that 2021 ROG Flow X13 is better than Alienware M15 R5.

Supports faster memory

The 2021 ROG Flow X13 supports a faster memory speed than the Alienware M15 R5. It supports up to 4267MHz versus 3200MHz of system memory on the Alienware M15 R5.

Memory type and speed
2021 ROG Flow X13 - LPDDR4X
4,267 MHz
Alienware M15 R5 - DDR4
3,200 MHz
About 47% lighter

The 2021 ROG Flow X13 weighed 2.87 pounds, 47% lighter than the 5.34 pounds Alienware M15 R5.

Weight2021 ROG Flow X13Alienware M15 R5
Pound
2.87 lbs.
5.34 lbs.
Kilogram
1.30 kg
2.42 kg

Alienware M15 R5 Pros

Reasons that Alienware M15 R5 is better than 2021 ROG Flow X13.

Upgradable memory

Alienware M15 R5 comes with two SODIMM slots 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.

Memory2021 ROG Flow X13Alienware M15 R5
Slots
Onboard
x2
TypeLPDDR4XDDR4
16% larger display

Alienware M15 R5 has a 15.6-inch screen size 16% larger than the 13.4-inch 2021 ROG Flow X13.

Display size
Alienware M15 R5
15.6-inch
2021 ROG Flow X13
13.4-inch

Key Similars

Similar characteristics share between 2021 ROG Flow X13 and Alienware M15 R5.

Similar CPU performance

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

Geekbench 5 multi-core score
2021 ROG Flow X13 - AMD Ryzen 9-5980HS
7,773
Alienware M15 R5 - AMD Ryzen 9-5900HX
7,663
2021 ROG Flow X13 - AMD Ryzen 9-5900HS
7,162
Alienware M15 R5 - AMD Ryzen 7-5800H
7,098
Supports the same maximum memory size of up to 32GB

Both laptops supports up to 32GB of system memory.

Max system memory size
2021 ROG Flow X13
32 GB
Alienware M15 R5
32 GB

Prices

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

2021 ROG Flow X13 Price
Asus ROG Flow X13 Gaming 2-in-1 Laptop | 13.4" FHD+ 120Hz Glossy Touch 100% sRGB | AMD 8-Core Zen 4 Ryzen 9 7940HS (>i9-12900H) | 16GB DDR5 512GB SSD | Backlit FHD IR Camera Win11 Black + HDMI Cable
Asus ROG Flow X13 Gaming 2-in-1 Laptop | 13.4" FHD+ 120Hz Glossy Touch 100% sRGB | AMD 8-Core Zen 4 Ryzen 9 7940HS (>i9-12900H) | 16GB DDR5 512GB SSD | Backlit FHD IR Camera Win11 Black + HDMI Cable
By Asus
$899.00
ASUS ROG Flow Z13 (2023) Gaming Laptop Tablet, 13.4” Nebula Display 16:10 QHD 165Hz, GeForce RTX 4050, Intel Core i9-13900H, 16GB LPDDR5, 1TB PCIe SSD, Wi-Fi 6E, Windows 11, GZ301VU-DS94,Black
ASUS ROG Flow Z13 (2023) Gaming Laptop Tablet, 13.4” Nebula Display 16:10 QHD 165Hz, GeForce RTX 4050, Intel Core i9-13900H, 16GB LPDDR5, 1TB PCIe SSD, Wi-Fi 6E, Windows 11, GZ301VU-DS94,Black
By ASUS
$1,749.99
ASUS ROG Flow X13 Ultra Slim 2-in-1 Gaming Laptop, 13.4” 120Hz FHD+ Display, GeForce GTX 1650, AMD Ryzen 9 5900HS, 16GB LPDDR4X, 1TB PCIe SSD, Wi-Fi 6, Windows 10 Home, GV301QH-DS96
ASUS ROG Flow X13 Ultra Slim 2-in-1 Gaming Laptop, 13.4” 120Hz FHD+ Display, GeForce GTX 1650, AMD Ryzen 9 5900HS, 16GB LPDDR4X, 1TB PCIe SSD, Wi-Fi 6, Windows 10 Home, GV301QH-DS96
By ASUS
$1,139.00
$1,359.99 16% OFF
Alienware M15 R5 AMD Ryzen Price
Alienware M15 R5 Gaming Laptop, 15.6 inch FHD 360Hz 1ms G-SYNC Display, AMD Ryzen R9 5900HX, GeForce RTX 3070, 64GB RAM, 2TB NVMe SSD, Killer WiFi, RGB Keyboard, Windows 11, Dark Side of The Moon
Alienware M15 R5 Gaming Laptop, 15.6 inch FHD 360Hz 1ms G-SYNC Display, AMD Ryzen R9 5900HX, GeForce RTX 3070, 64GB RAM, 2TB NVMe SSD, Killer WiFi, RGB Keyboard, Windows 11, Dark Side of The Moon
By Dell
$2,659.00
Dell Alienware m15 R5 Ryzen Edition Gaming Laptop (2021) | 15.6" FHD | Core Ryzen 9-1TB SSD - 32GB RAM - RTX 3070 | 12 Cores @ 4.7 GHz - 8GB GDDR6
Dell Alienware m15 R5 Ryzen Edition Gaming Laptop (2021) | 15.6" FHD | Core Ryzen 9-1TB SSD - 32GB RAM - RTX 3070 | 12 Cores @ 4.7 GHz - 8GB GDDR6
By Dell
$2,584.00
Dell Alienware m15 R5 Ryzen Edition Gaming Laptop (2021) | 15.6" 360Hz FHD | Core Ryzen 7-512GB SSD Hard Drive - 16GB RAM - RTX 3070 | 8 Cores @ 4.4 GHz - 8GB GDDR6 Win 11 Home (Renewed)
Dell Alienware m15 R5 Ryzen Edition Gaming Laptop (2021) | 15.6" 360Hz FHD | Core Ryzen 7-512GB SSD Hard Drive - 16GB RAM - RTX 3070 | 8 Cores @ 4.4 GHz - 8GB GDDR6 Win 11 Home (Renewed)
By Dell
$1,756.70

Availability

2021 ROG Flow X13Alienware M15 R5
Released20212021
Release DateAnnounced on January 13, 2021 (CES 2021)Announced on April 20, 2021
Generations

Exterior

2021 ROG Flow X13Alienware M15 R5
Dimensions11.77 x 8.74 x 0.62” (299 x 222 x 15.8 mm)14.02” x 10.73” x 0.47 - 0.76” (356.20 x 272.50 x 12 - 19.25 mm)
Weight2.87 lbs (1.30 kg)5.34 - 5.93 lbs (2.42 - 2.69 kg)
Colors
Black
Dark Side of the Moon with High Endurance Clear Coat and Silky Smooth Finish
Keyboard and Trackpad
  • Full size 15” white backlit chicklet keyboard
  • 1.7mm key travel
  • Hotkeys:
    Volume up Volume down Microphone mute ROG Armoury Crate
  • N-KEY rollover
  • Keyboard
    • Alienware mSeries 4-Zone AlienFX RGB keyboard.
    • RGB per-key backlit Cherry mechanical keyboard.
    • AlienFX lighting
    • Includes anti-ghosting and N-key rollover technology
    • 1.8mm key travel
    • 0.2mm-dish concave key design
  • Touchpad
    • 4.13 x 2.36 in (105 mm x 80 mm) precision touchpad with multi-touch gesture support.

Display

2021 ROG Flow X13Alienware M15 R5
Size13.4 Inches15.6 Inches
Info
  • 13.4” WQUXGA 60Hz
    16:10 3840 x 2400 60Hz 116% sRGB 86% Adobe RGB 85% DCI-P3 Pantone Validated Touch Screen IPS Level Anti-Glare Adaptive-Sync Pantone Validated
  • 13.4” WUXGA 120Hz
    16:10 1920 x 1200 120Hz 100% sRGB 75% Adobe RGB 75% DCI-P3 Pantone Validated Touch Screen IPS Level Anti-Glare Adaptive-Sync Pantone Validated
  • 15.6” FHD with 165Hz
    1920 x 1080 141 PPI 9ms response time 300 nits 16:9 100% sRGB color gamut 1000:1 Anti-glare WVA 6W
  • 15.6” FHD with 360Hz
    1920 x 1080 141 PPI 5ms response time 300 nits 16:9 100% sRGB color gamut 1000:1 Anti-glare WVA 8W
  • 15.6” QHD with 240Hz
    2560 x 1440 188 PPI 9ms response time 400 nits 16:9 99% DCI-P3 color gamut 1000:1 Anti-glare WVA 10W

Ports

2021 ROG Flow X13Alienware M15 R5
2021 ROG Flow X13 Ports
Image Source: ASUS
Left (4)
  • 1 x ROG XG Mobile Interface
    Exclusive interface with PCIe 3.0 x8 (Up to 63Gbps)
  • 1 x USB-C
    USB 3.2 Gen 2 (10 Gbps)
  • 1 x HDMI
    v2.0b
  • 1 x headphone jack
    Headphone/Microphone
Right (2)
  • 1 x USB-C
    USB 3.2 Gen 2 (10 Gbps), DisplayPort 1.4, Power Delivery
  • 1 x USB-A
    USB 3.2 Gen 2 (10 Gbps)
Alienware M15 R5 Ports
Image Source: Dell
  • 1 x USB-C 3.2 Gen 2 with DisplayPort
  • 2 x USB-A 3.2 Gen 1 Port
  • 1 x USB-A 3.2 Gen 1 port with PowerShare
  • 1 x RJ-45
  • 1 x HDMI 2.1
    Supports up to 4K@120Hz display out.
  • 1 x Headset port
  • 1 x Power/DC-in Port

Internal Specs

2021 ROG Flow X13Alienware M15 R5
Processor
  1. AMD Ryzen™ 9 5900HS
    8 cores, 16 threads, 3.00 → 4.60 GHz, 4MB L2 Cache, 16MB L3 Cache, 35W
  2. AMD Ryzen™ 9 5980HS
    8 cores, 16 threads, 3.00 → 4.80 GHz, 4MB L2 Cache, 16MB L3 Cache, 35W
  1. AMD Ryzen™ 7 5800H
    8 cores, 16 threads, 3.20 → 4.40 GHz, 4MB L2 Cache, 16MB L3 Cache, 45W
  2. AMD Ryzen™ 9 5900HX
    8 cores, 16 threads, 3.30 → 4.60 GHz, 4MB L2 Cache, 16MB L3 Cache, 45W
Integrated Graphics
  1. AMD Ryzen™ 9 5900HS
    AMD Radeon™ Graphics
    8 Graphics Cores, 2100 MHz
  2. AMD Ryzen™ 9 5980HS
    AMD Radeon™ Graphics
    8 Graphics Cores, 2100 MHz
  1. AMD Ryzen™ 7 5800H
    AMD Radeon™ Graphics
    8 Graphics Cores, 2000 MHz
  2. AMD Ryzen™ 9 5900HX
    AMD Radeon™ Graphics
    8 Graphics Cores, 2100 MHz
Memory
16GB 32GB
Dual-Channel LPDDR4X 4266MHz Onboard Memory
8 GB 16 GB 32 GB
3200MHz Dual-channel DDR4 SDRAM.
2 x SO-DIMM slots.
Discrete GraphicsNVIDIA® GeForce® GTX 1650
4GB GDDR6 VRAM (With ROG Boost up to 1255MHz at 35W (40W with Dynamic Boost)).
  • NVIDIA® GeForce RTX™ 3050 Ti
    4GB GDDR6 VRAM.
  • NVIDIA® GeForce RTX™ 3060
    6GB GDDR6 VRAM.
  • NVIDIA® GeForce RTX™ 3070
    8GB GDDR6 VRAM.
Storage
512GB 1TB
M.2 NVMe PCIe 3.0
2 x M.2 2230/2280 slots (Up to 2TB each)

Connectivity

2021 ROG Flow X13Alienware M15 R5
Wi-FiIntel® Wi-Fi 6 with Gig+ performance (802.11ax)Rivet Killer Wi-Fi 6 AX1650x
Dual Band 2.4 GHz/5 GHz Up to 2400 Mbps WiFi 6 802.11a/b/g/n/ac/ax
BluetoothBluetooth 5.0Bluetooth 5.2
Ethernet-Gigabit Ethernet Controller
Transfer rate: 10/100/1000/2500 Mbps

Battery

2021 ROG Flow X13Alienware M15 R5
Size62 Wh 4-cell lithium-ion
  • 56 WHr, 3-cell smart lithium-ion battery
  • 86 WHr, 6-cell smart lithium-ion battery
Battery LifeUp to 10 hours
Video playback.
-
Power Supply100W USB-C power adaptor
180W 240W
power adapter.

Software

2021 ROG Flow X13Alienware M15 R5
OS
  • Windows 10 Home
  • Windows 10 Pro
Windows 10 Home Windows 10 Pro
Upgradable to Windows 11
Built-in Apps
Armoury Crate GameVisual 1M Xbox Game Pass
  • Alienware Command Center
    Supports AlienFX lighting, Game
    Library with auto-tune game profile functionality.
  • Alienware Adrenalin
  • Alienware Mobile Connect
  • Microsoft Office 365 (30-day trial)

Camera & Audio

2021 ROG Flow X13Alienware M15 R5
Camera Front-facing camera
Top-mount front camera, 0.92 Megapixels (1280 x 720 HD).
Front-facing camera
Alienware HD (1280x720 resolution) camera.
Audio
  • 2x 1W speaker with Smart Amp Technology
  • Built-in array microphone
  • Two-Way AI Noise Cancelation
  • Controller: Realtek ALC3254
    • 7.1 Digital Audio out using HDMI out connection
    • Alienware Sound Center via Alienware Command Center
  • Speakers:
    • 2 x 2W speakers
  • Microphone:
    • Dual-array microphones

Misc

2021 ROG Flow X13Alienware M15 R5
InkingSupports ASUS Pen.-

Key Features

2021 ROG Flow X13Alienware M15 R5
At Glance
Released in Early
2021
16:10
13.4”
1200p 120Hz
Weight
2.87 lb
1.30 kg
Up to
AMD Ryzen 9-5980HS
8C/16T, 3.00 → 4.80 GHz
Geekbench 5
1,450
Single Core
Geekbench 5
7,773
Multi-Core
With integrated
AMD Radeon™ Graphics
8 Graphics Cores, 2100 MHz
Configurable up to
32GB
4267 MHz LPDDR4X
2021 ROG Flow X13 Ports
NVIDIA GeForce
GTX 1650
4GB GDDR6
Released in Early
2021
16:9 QHD
15.6”
1440p 240Hz
Weight
5.34 lb
2.42 kg
Up to
AMD Ryzen 9-5900HX
8C/16T, 3.30 → 4.60 GHz
Geekbench 5
1,416
Single Core
Geekbench 5
7,663
Multi-Core
With integrated
AMD Radeon™ Graphics
8 Graphics Cores, 2100 MHz
Upgradable up to
32GB
3200 MHz DDR4
Alienware M15 R5 Ports
Nvidia GeForce
RTX 3070
8GB GDDR6

Comparison Summary

2021 ROG Flow X13 vs. Alienware M15 R5

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 Alienware M15 R5 was introduced by Dell around the same time in early-2021. It comes with up to an octa-core AMD Ryzen 9-5900HX with a boost clock speed up to 4.60 GHz. It has a dedicated GPU option up to Nvidia GeForce RTX 3070 with 8GB GDDR6.

Geekbench 5 Single Core

2021 ROG Flow X131
AMD Ryzen™ 9 5900HS1,35693.52%
2
AMD Ryzen™ 9 5980HS1,450100.00%
Alienware M15 R51
AMD Ryzen™ 7 5800H1,33492.00%
2
AMD Ryzen™ 9 5900HX1,41697.66%
01,450

Geekbench 5 Multi Core

2021 ROG Flow X131
AMD Ryzen™ 9 5900HS7,16292.14%
2
AMD Ryzen™ 9 5980HS7,773100.00%
Alienware M15 R51
AMD Ryzen™ 7 5800H7,09891.32%
2
AMD Ryzen™ 9 5900HX7,66398.58%
07,773

The 2021 ROG Flow X13 has a 13.4-inch display which is considerably smaller than the 15.6-inch Alienware M15 R5. In addition, The 2021 ROG Flow X13 weighs 2.87 lbs. about 86% lighter than the 5.34 lbs. Alienware M15 R5. Moreover, measured at 11.77” x 8.74” x 0.62”, the 2021 ROG Flow X13 is much more portable than the Alienware M15 R5 at 14.02” x 10.73” x 0.76”.

2021 ROG Flow X13Alienware M15 R5

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 Alienware M15 R5, it supports up to 32GB 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.

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