Lenovo ThinkPad X1 Extreme Gen 4 vs. Lenovo ThinkPad X1 Carbon Gen 6: Full specs comparison

The following is a comprehensive comparison of the Lenovo ThinkPad X1 Extreme Gen 4 and Lenovo ThinkPad X1 Carbon Gen 6 specifications, including details on CPU, memory, storage, battery life, display quality, and other features.

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Lenovo ThinkPad X1 Extreme Gen 4 image

Lenovo ThinkPad X1 Extreme Gen 4

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Lenovo ThinkPad X1 Carbon Gen 6

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Lenovo ThinkPad X1 Extreme Gen 4 Pros

Reasons that Lenovo ThinkPad X1 Extreme Gen 4 is better than Lenovo ThinkPad X1 Carbon Gen 6.

Significantly newer manufacturing

2021 vs. 2018

Much faster CPU performance

Intel Core i9-11950H inside Lenovo ThinkPad X1 Extreme Gen 4 has a 117% better multi-core CPU performance score than the Intel Core i7-8650U inside Lenovo ThinkPad X1 Carbon Gen 6.

Geekbench 5 multi-core score
Lenovo ThinkPad X1 Extreme Gen 4 - Intel Core i9-11950H
8,450
Lenovo ThinkPad X1 Extreme Gen 4 - Intel Core i7-11850H
8,205
Lenovo ThinkPad X1 Extreme Gen 4 - Intel Core i7-11800H
7,908
Lenovo ThinkPad X1 Carbon Gen 6 - Intel Core i7-8650U
3,879
Lenovo ThinkPad X1 Carbon Gen 6 - Intel Core i5-8350U
2,982
Lenovo ThinkPad X1 Carbon Gen 6 - Intel Core i5-8250U
1,971
Supports larger memory

Lenovo ThinkPad X1 Extreme Gen 4 supports a larger memory capacity than the Lenovo ThinkPad X1 Carbon Gen 6. It supports up to 64GB versus 16GB of system memory on the Lenovo ThinkPad X1 Carbon Gen 6.

Max system memory size
Lenovo ThinkPad X1 Extreme Gen 4
64 GB
Lenovo ThinkPad X1 Carbon Gen 6
16 GB
Supports faster memory

Lenovo ThinkPad X1 Extreme Gen 4 supports a faster memory speed than the Lenovo ThinkPad X1 Carbon Gen 6. It supports up to 3200MHz versus 2133MHz of system memory on the Lenovo ThinkPad X1 Carbon Gen 6.

Memory type and speed
Lenovo ThinkPad X1 Extreme Gen 4 - DDR4
3,200 MHz
Lenovo ThinkPad X1 Carbon Gen 6 - LPDDR3
2,133 MHz
Upgradable memory

Lenovo ThinkPad X1 Extreme Gen 4 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 Lenovo ThinkPad X1 Carbon Gen 6 since it has onboard memory.

MemoryLenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
Slots
x2
Onboard
TypeDDR4LPDDR3
Supports discrete graphics

Configurable up to NVIDIA GeForce RTX 3080 16GB GDDR6 vs. integrated

14% larger display

Lenovo ThinkPad X1 Extreme Gen 4 has a 16-inch screen size 14% larger than the 14-inch Lenovo ThinkPad X1 Carbon Gen 6.

Display size
Lenovo ThinkPad X1 Extreme Gen 4
16-inch
Lenovo ThinkPad X1 Carbon Gen 6
14-inch

Lenovo ThinkPad X1 Carbon Gen 6 Pros

Reasons that Lenovo ThinkPad X1 Carbon Gen 6 is better than Lenovo ThinkPad X1 Extreme Gen 4.

About 38% lighter

Lenovo ThinkPad X1 Carbon Gen 6 weighed 2.49 pounds, 38% lighter than the 3.99 pounds Lenovo ThinkPad X1 Extreme Gen 4.

WeightLenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
Pound
3.99 lbs.
2.49 lbs.
Kilogram
1.81 kg
1.13 kg

Prices

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

Lenovo ThinkPad X1 Extreme Gen 4 Price
Lenovo ThinkPad X1 Extreme Gen 4 16" 2K QHD (Intel Core i7-11800H, 64GB RAM, 2TB SSD, Geforce RTX 3050 Ti) Business & Mobile Workstation Laptop, Backlit, FP, 3-Yr WRT, IST Cable, Win 11 Pro, Black
 Lenovo ThinkPad X1 Extreme Gen 4 16" 2K QHD (Intel Core i7-11800H, 64GB RAM, 2TB SSD, Geforce RTX 3050 Ti) Business & Mobile Workstation Laptop, Backlit, FP, 3-Yr WRT, IST Cable, Win 11 Pro, Black
By Lenovo
$1,799.99
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Lenovo ThinkPad X1 Extreme Gen 5 Business Laptop, 16" WUXGA IPS Display, Core i7-12700H, Windows 11 Pro, 32GB RAM, 1TB SSD, GeForce RTX 3050 Ti, Wi-Fi 6E, Fingerprint Reader, Backlit Keyboard, TD
 Lenovo ThinkPad X1 Extreme Gen 5 Business Laptop, 16" WUXGA IPS Display, Core i7-12700H, Windows 11 Pro, 32GB RAM, 1TB SSD, GeForce RTX 3050 Ti, Wi-Fi 6E, Fingerprint Reader, Backlit Keyboard, TD
By Lenovo
$1,885.77
$2,029.00 7% OFF
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Lenovo ThinkPad X1 Extreme Gen 4 Business & Mobile Workstation Laptop (16" 2K QHD, Intel Core i7-11800H, 64GB RAM, 1TB SSD, RTX 3050 Ti), Backlit, FP, 3-Yr WRT, IST Cable, Win 11 Pro (Renewed)
 Lenovo ThinkPad X1 Extreme Gen 4 Business & Mobile Workstation Laptop (16" 2K QHD, Intel Core i7-11800H, 64GB RAM, 1TB SSD, RTX 3050 Ti), Backlit, FP, 3-Yr WRT, IST Cable, Win 11 Pro (Renewed)
By Lenovo
$1,599.99
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Lenovo ThinkPad X1 Carbon Gen 6 Price
Lenovo ThinkPad X1 Carbon (6th Gen) 14-inch FHD Laptop, Intel Quad Core i7-8650U, 16GB RAM, 256GB NVMe-PCIe SSD, Fingerprint Reader, Windows 10 Pro, Black (Renewed)
 Lenovo ThinkPad X1 Carbon (6th Gen) 14-inch FHD Laptop, Intel Quad Core i7-8650U, 16GB RAM, 256GB NVMe-PCIe SSD, Fingerprint Reader, Windows 10 Pro, Black (Renewed)
By Lenovo
$329.00
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Lenovo ThinkPad X1 Carbon (6th Gen) - Windows 10 Pro - Intel Quad Core i5-8350U, 256GB NVMe-PCIe SSD, 16GB RAM, 14 FHD IPS (1920x1080) Display, Fingerprint Reader, Black (Renewed)
 Lenovo ThinkPad X1 Carbon (6th Gen) - Windows 10 Pro - Intel Quad Core i5-8350U, 256GB NVMe-PCIe SSD, 16GB RAM, 14 FHD IPS (1920x1080) Display, Fingerprint Reader, Black (Renewed)
By Lenovo
$303.99
$319.00 5% OFF
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Lenovo X1 Carbon 6th Generation Ultrabook: Core i7-8550U, 16GB RAM, 512GB SSD, 14inch Full HD Display, Backlit Keyboard (Renewed)
 Lenovo X1 Carbon 6th Generation Ultrabook: Core i7-8550U, 16GB RAM, 512GB SSD, 14inch Full HD Display, Backlit Keyboard (Renewed)
By Lenovo
$329.00
$359.00 8% OFF
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Specs Comparison

Availability

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
Released20212018
Release Date
  • Announced on June 23, 2021 (MWC 2021).
  • Available starting August 2021.
-
PricingStarting at €2,099-
Applicable ModelsLenovo ThinkPad X1 Extreme Gen 4-

Exterior

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
Dimensions
  • 14.15 x 9.99 x 0.70 inches (359.5 x 253.8 x 17.7 mm)
    Non-touch models.
  • 14.15 x 9.99 x 0.72 inches (359.5 x 253.8 x 18.2 mm)
    Touch models.
12.73” x 8.54” x 0.62” (323.5 x 217.1 x 15.95 mm)
Width: 12.73” (323.5 mm)
Depth: 8.54” (217.1 mm)
Height: 0.62” (15.95 mm)
Weight
  • 3.99 lbs (1.81 kg )
    Non-touch models.
  • 4.1 lbs (1.86 kg)
    Touch models.
Starting at 2.49 lbs (1.13 kg)
Colors
Black
BlackBlack with color coded hinges
Keyboard and Trackpad
  • Bottom-load backlit keyboard with white LED, 1.5mm stroke
  • 6-row, spill-resistant, multimedia Fn keys with Unified Communications controls
  • Trackpad + TrackPoint® pointing device
  • Multitouch glass touchpad (115 x 67mm)
  • Spill-resistant, Backlit with white LED lighting keyboard.
  • Trackpad + TrackPoint® pointing device.

Display

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
Size16 Inches14 Inches
Info
  • 16” QHD+ Non-touch Display
    16:10, IPS, Anti-Glare, Non-touch, 2560x1600, 400nit, 100% sRGB, 1200:1, 60Hz, Low Blue Light.
  • 16” UHD+ Non-touch Display
    16:10, IPS, Anti-Glare, Non-touch, 3840x2400, 600nit, 100% Adobe RGB, HDR400 Dolby Vision, 1500:1, 60Hz, Low Blue Light, 8+2 bit color.
  • 16” UHD+ Touch Display 
    16:10, IPS, Anti-Reflective, Anti-Smudge, Touch, 3840x2400, 600nit, 100% Adobe RGB, HDR400 Dolby Vision, 1500:1, 60Hz, Low Blue Light, 8+2 bit color.
  • 14” FHD
    1920 x 1080, IPS, 60Hz, anti-glare, 300 nits, multi-touch.
  • 14” WQHD
    2560 x 1440, IPS, 60Hz, anti-glare, 300 nits, multi-touch.
  • 14” HDR WQHD
    2560 x 1440, IPS, 60Hz, glossy, Dolby Vision™ HDR, 500 nits, multi-touch.

Ports

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
Left
  • 2 x Thunderbolt™️ 4
    Supports USB 4 with 40Gbps data transfer, DisplayPort 1.4, and Power Delivery 3.0.
  • 1 x HDMI
    HDMI 2.0 on models with integrated graphics.
    HDMI 2.1 on models with discrete graphics.
  • 1 x Headset jack
    3.5mm
  • 1 x Power connector
Right
  • 2 x USB-A
    1 x USB 3.2 Gen 1 (5 Gbps).
    1 x USB 3.2 Gen 1 (5Gbps) with Always On.
  • 1 x SD Card Reader
    Full-size with UHS-II supports
  • 1 x Kensington nano security slot.
  • 2 x Thunderbolt™ 3
    Supports Power Delivery & DisplayPort.
  • 2 x USB 3.1 Gen 1
    Full-size USB-A ports always on.
  • 1 x Network extension for Ethernet/side mechanical docking
  • 1 x HDMI 1.4
  • 1 x Headphone / mic combo
  • 1 x MicroSD card reader
  • 1 x WWAN slot (Fibocom L850-GL 4G LTE-A cat 9) (optional)
  • 1 x Power button
  • 1 x Kensington lock slot

Internal Specs

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
Processor
  1. 11th Gen Intel® Core™ i7-11800H
    8 cores, 16 threads, 2.30 → 4.60 GHz, 24MB SmartCache, 45W
  2. 11th Gen Intel® Core™ i7-11850H
    8 cores, 16 threads, 2.50 → 4.80 GHz, 24MB SmartCache, 45W
  3. 11th Gen Intel® Core™ i9-11950H
    8 cores, 16 threads, 2.60 → 5.00 GHz, 24MB SmartCache, 45W
  1. 8th Gen Intel® Core™ i5-8250U
    4 cores, 8 threads, 1.60 → 3.40 GHz, 6MB SmartCache, 15W
  2. 8th Gen Intel® Core™ i5-8350U
    4 cores, 8 threads, 1.70 → 3.60 GHz, 6MB SmartCache, 15W
  3. 8th Gen Intel® Core™ i7-8650U
    4 cores, 8 threads, 1.90 → 4.20 GHz, 8MB SmartCache, 15W
Integrated Graphics
  1. 11th Gen Intel® Core™ i7-11800H
    Intel® UHD Graphics
    32 Execution Units, 350 → 1450 MHz
  2. 11th Gen Intel® Core™ i7-11850H
    Intel® UHD Graphics
    32 Execution Units, 350 → 1450 MHz
  3. 11th Gen Intel® Core™ i9-11950H
    Intel® UHD Graphics
    32 Execution Units, 350 → 1450 MHz
  1. 8th Gen Intel® Core™ i5-8250U
    Intel® UHD Graphics 620
    24 Execution Units, 300 → 1100 MHz
  2. 8th Gen Intel® Core™ i5-8350U
    Intel® UHD Graphics 620
    24 Execution Units, 300 → 1100 MHz
  3. 8th Gen Intel® Core™ i7-8650U
    Intel® UHD Graphics 620
    24 Execution Units, 300 → 1150 MHz
Memory
4GB 8GB 16GB 32GB 64GB
  • Memory Slots: 2 x SO-DIMM slots
  • Memory Type: Dual Channel Non-ECC DDR4 Memory
  • Memory Speed: 3200 MHz
  • Memory Per Slot:
    4GB 8GB 16GB 32GB
  • 8GB 16GB
    2133 MHz Dual-channel LPDDR3 SRAM.
Discrete Graphics
  • NVIDIA® GeForce® RTX™ 3050 Ti - 4GB GDDR6
  • NVIDIA GeForce RTX 3060 Laptop GPU - 6GB GDDR6
  • NVIDIA GeForce RTX 3070 Laptop GPU - 8GB GDDR6
  • NVIDIA GeForce RTX 3080 Laptop GPU - 16GB GDDR6
  • All supports Advanced Optimus, Resizable BAR, Dynamic Boost 2.0, DirectX 12.
-
Storage
512GB 1TB 2TB 4TB
  • 1 x M.2 2280 PCIe NVMe slot
    Models with RTX 3060/3070/3080.
  • 2 x M.2 2280 PCIe NVMe slot
    Models with integrated graphics and RTX 3050 Ti. With RAID 0/1 support.
  • 256 GB 512 GB 1 TB
    M.2 2280 PCIe NVMe (Replaceable).

Connectivity

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
Wi-FiIntel® AX210 Wi-Fi 6E 802.11AX (2 x 2)
Dual band 2.4 GHz/5 GHz, 802.11 a/b/g/n/ac/ax.
  • Intel® Dual-Band Wireless-AC(2x2) 8265
    Up to 867 Mbps, Dual band 2.4 GHz/5 GHz, 802.11 a/b/g/n/ac.
BluetoothBluetooth 5.2
  • Bluetooth 4.1
EthernetEthernet support via optional Lenovo USB-C to Ethernet Adapter-
MoreOptional 5G supports.
  • Qualcomm® Snapdragon™ X55 5G Modem M.2 card - RF System with embedded eSIM functionality
  • No support
  • WWAN: Fibocom L850-GL 4G LTE-A cat 9

Battery

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
Size90 Wh Integrated Li-Polymer battery
  • 3-cell smart lithium-ion
  • Battery Capacity: 57 Wh
Battery LifeUp to 10.7 hours of battery life
Tested with MobileMark 2018.
  • Up to 15 hours
* Tested with MobileMark 2014
Power Supply[featurs items="135W, 170W, 230W"] slim tip (3-pin) AC adapter with RapidCharge supports.65 W USB (Type-C) power adapter
Supports Rapid Charge.

Software

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
OS
  • Windows® 10 Pro 64
  • Windows 10 Home 64
  • Windows 11 Pro 64
  • Windows 11 Home 64
  • Windows 11 DG Windows 10 Pro 64
  • Linux
  • Ubuntu Linux
  • No operating system
  • Windows 10 Home 64-bit
Built-in Apps-
  • Lenovo Vantage

Camera & Audio

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
Camera
  • Front-facing camera
    1080p FHD with ThinkShutter privacy cover.
  • Windows Hello IR support (optional).
  • Front-facing camera
    720p (1280 x 720 HD) camera.
  • IR Facial Authentication (optional)
Audio
  • High Definition (HD) Audio, Realtek® ALC3306 codec
  • Stereo speakers, 2W x2, Dolby® Atmos®
  • Dual array microphone, far-field
  • Dolby Audio™ Premium
  • Dolby Atmos® for headphones
  • Noise-cancelling dual-array far-field microphones

Misc

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
InkingOptional inking supports.
  • Lenovo Precision Pen 2
  • No pen (pen sold separately)
  • No support (non-touch display doesn't support pen input)
-
Sensors
  • Infrared (IR) Camera (optional; required for use with Windows Hello)
  • Windows Hello compliant fingerprint reader on the palm rest
  • Optional IR Camera
  • Ambient light sensor
Security
  • Security Chip
    • Discrete TPM 2.0, TCG certified
    • Firmware TPM 2.0 integrated into the chipset
    • Disabled (in some regions)
  • Physical Locks
    • Kensington® Nano Security Slot
  • Fingerprint Reader
    • Touch style fingerprint reader on the power button, match-on-chip
  • BIOS Security
    • Supervisor password
    • Power-on password
    • NVMe password
    • Self-healing BIOS
  • Other Security
    • (Optional) Camera privacy shutter
    • (Optional) IR camera for Windows Hello
  • Fast Identity Online (FIDO) authentication capabilities
  • Match-on-Chip Fingerprint Reader
  • dTPM 2.0 chip
  • ThinkShutter camera cover
  • Optional IR Camera
  • Kensington lock slot
Warranty
  • 1-year depot service
  • 1-year depot with 2-year system board service
  • 1-year limited onsite service
  • 1-year + 2-year depot service
  • 1-year + 2-year limited onsite service
  • 3-year (1-yr battery) depot service
  • 3-year (1-yr battery) limited onsite service
  • No base warranty
-

Key Features

Lenovo ThinkPad X1 Extreme Gen 4Lenovo ThinkPad X1 Carbon Gen 6
At Glance
Released in Mid
2021
16:10 4K UHD+
16”
2400p 60Hz
Weight
3.99 lb
1.81 kg
Up to
Intel Core i9-11950H
8C/16T, 2.60 → 5.00 GHz
Geekbench 5
1,581
Single Core
Geekbench 5
8,450
Multi-Core
With integrated
Intel® UHD Graphics
32 Execution Units, 350 → 1450 MHz
Upgradable up to
64GB
3200 MHz DDR4
NVIDIA GeForce
RTX 3080
16GB GDDR6
Released in
2018
16:9 WQHD
14”
1440p 60Hz
Weight
2.49 lb
1.13 kg
Up to
Intel Core i7-8650U
4C/8T, 1.90 → 4.20 GHz
Geekbench 5
1,106
Single Core
Geekbench 5
3,879
Multi-Core
With integrated
Intel® UHD Graphics 620
24 Execution Units, 300 → 1150 MHz
Configurable up to
16GB
2133 MHz LPDDR3

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