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Computers / Laptops

Lenovo ThinkPad X1 Carbon Gen 12 21KC008PVN
Screen size
14in
Processor
Intel Core Ultra 7 155H
GPU
Intel Arc Graphics
Weight (published)
1.09kg

123 of 179 fields known.

At a glance

Ports

  • 2 USB-C Thunderbolt 4 / USB4 40Gbps
  • USB-A USB 5Gbps / USB 3.2 Gen 1 (Always On)
  • USB-A USB 5Gbps / USB 3.2 Gen 1
  • HDMI 2.1
  • 3.5 mm audio

All specs

SourceCalculated

General

Model numbers
21KC008PVN1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026PSREF model 21KC008PVN, machine type 21KC. Region ASEAN, country Vietnam.
Announced
Not available
Status
Not available
Predecessor
Not available
Launch price (US)
Not available
Launch price (EU)
Not available
Markets
VN1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026PSREF lists this exact model for Vietnam.

Chassis

Front and side, drawn to scale.

Dimensions
Width312.8Depth214.75Thickness (max)14.96mm(12.3 × 8.5 × 0.6 in)1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026312.80 x 214.75 x 14.96 mm. May vary by configuration.
Weight (published)
1.09kg(2.4 lb)1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026Published as starting at 1.09 kg for models with the haptic touchpad. Varies by configuration.
Max hinge angle
Not available

Display

Screen size
14in(35.6 cm)1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026
Pixel density
242.6ppi
Panel type
OLED1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026
Dimming zones
Not available
Panel part number
Samsung ATNA40YK20-04Measurementnotebookcheck.com/Lenovo-ThinkPad-X1-Carbon-G12-Laptop-Test-Erstes-grosses-Update-in-drei-Jahren.807241.0.htmlRead 10 October 2026Spec table: Samsung ATNA40YK20-0, OLED, 2880 x 1800.
Screen surface
Not available
Refresh rate modes
Width (px)Height (px)Maximum operating refresh (Hz)VRR
28801800120No
Max refresh rate
120Hz
Adaptive sync
Not available
Gray-to-gray response time (claimed)
Not available
Native panel colour depth
Not available
Brightness (SDR, claimed)
400nits1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026400 nits.
Peak brightness (SDR outdoors, claimed)
Not available
Sustained brightness (HDR, claimed)
Not available
Peak brightness (HDR, claimed)
Not available
sRGB coverage (claimed)
Not available
DCI-P3 coverage (claimed)
100%1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026PSREF lists 100% DCI-P3.
Adobe RGB coverage (claimed)
Not available
Factory calibrated
Not available
Second display
Not available

Processor

CPU cores
16
Cores labelled performance
6
Cores labelled efficiency
10
Threads
221Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026
Max boost clock
4.8GHz
L3 cache
24MB1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026PSREF names 24 MB Intel Smart Cache, which is the shared L3.
Process
Not available
Sustained CPU power (configured)
25W4Measurementnotebookcheck.com/Lenovo-ThinkPad-X1-Carbon-G12-Laptop-Test-Erstes-grosses-Update-in-drei-Jahren.807241.0.htmlRead 10 October 2026Spec table: 25 W PL1 sustained. Reported for the review unit.
Peak CPU power (configured)
56W4Measurementnotebookcheck.com/Lenovo-ThinkPad-X1-Carbon-G12-Laptop-Test-Erstes-grosses-Update-in-drei-Jahren.807241.0.htmlRead 10 October 2026Spec table: 56 W PL2 short burst. Reported for the review unit.
Combined CPU and GPU power
Not available
NPU performance
11TOPS1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026Integrated Intel AI Boost, up to 11 TOPS.

Graphics

Discrete GPU
No1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026
GPU
Not available
GPU brand
Not available
VRAM
Not available
Max GPU power (TGP)
Not available
Dynamic Boost
Not available
GPU boost clock
Not available
GPU switching
Not available

Memory

Installed RAM
32GB1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 202632 GB soldered LPDDR5X-6400.
Memory channels
Not available
RAM upgrade
Soldered1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026
Memory slots
Not available
RAM slots
Not available
Free RAM slots
Not available

Storage

Installed storage
1TB1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 20261 TB. Decimal capacity, 1 TB = 1000 GB.
Installed drive PCIe generation
41Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026
Storage slots
Form factorInterfacePCIe generationPCIe lanesCountOccupied
M.2 2280PCIe NVMe441Yes
M.2 slots
1
Free storage slots
0
Maximum slot PCIe generation
4

Ports

Ports
TypeVersionCountSideMaximum data rate (Gbps)Thunderbolt or USB4DP Alt Mode
USB-CThunderbolt 4 / USB4 40Gbps2Left40Thunderbolt 4Yes
USB-AUSB 5Gbps / USB 3.2 Gen 1 (Always On)1Left5Not availableNot available
USB-AUSB 5Gbps / USB 3.2 Gen 11Right5Not availableNot available
HDMIHDMI 2.11RightNot availableNot availableNot available
3.5 mm audioNot available1RightNot availableNot availableNot available
USB-C ports
2
Thunderbolt
Yes
Highest HDMI version
HDMI 2.1
Card reader
No
Ethernet speed
Not available
Maximum USB-C charging input
Not available

Wireless

Bluetooth
5.31Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026

Keyboard and touchpad

Keyboard layouts
English1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026PSREF: Backlit, English.
Key switches
Not available
Keyboard backlight
Backlit, type not stated1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026PSREF lists Backlit. The type and colour are not stated.
Numpad
Not available
Pointing stick
Yes1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026
Touchpad mechanism
Haptic1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026PSREF: Haptic Touchpad for this model.

Camera and audio

IR face login
Yes1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026
Built-in speaker drivers
21Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026
Total speaker power
4W1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026Stereo speakers, 2 W x 2.
Microphones
21Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 20262x array microphones.

Battery and power

Battery energy
57Wh1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 202657 Wh.
Claimed battery life
Use caseHours (h)
MobileMark 2511.6
Video playback15.9
Idle15.5
Adapter rated output
65W1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 202665W USB-C Slim (3-pin) adapter.
Laptop charging connector
USB-C1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026Charges over USB-C.
Charge 0 to 50 % (claimed)
Not available

Cooling

Vapor chamber
Not available
Liquid metal
Not available
Power modes
Not available

Security

Remote management
Not available
Security lock slot
Yes1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026

Software

Security updates until
Not available

Measured display

Contrast ratio (measured)
Not available
HDR peak brightness (measured)
Not available
DCI-P3 coverage (measured)
Not available
Colour accuracy (measured Delta E)
1.264Measurementnotebookcheck.com/Lenovo-ThinkPad-X1-Carbon-G12-Laptop-Test-Erstes-grosses-Update-in-drei-Jahren.807241.0.htmlRead 10 October 2026Calman ColorChecker dE 2000 mean 1.26 before calibration, 0.68 after.
PWM flicker found
Yes4Measurementnotebookcheck.com/Lenovo-ThinkPad-X1-Carbon-G12-Laptop-Test-Erstes-grosses-Update-in-drei-Jahren.807241.0.htmlRead 10 October 2026PWM flicker found.
Response black to white (measured)
0.76ms4Measurementnotebookcheck.com/Lenovo-ThinkPad-X1-Carbon-G12-Laptop-Test-Erstes-grosses-Update-in-drei-Jahren.807241.0.htmlRead 10 October 2026Black to white 0.76 ms (rise 0.41, fall 0.35).
Response grey to grey (measured)
0.91ms4Measurementnotebookcheck.com/Lenovo-ThinkPad-X1-Carbon-G12-Laptop-Test-Erstes-grosses-Update-in-drei-Jahren.807241.0.htmlRead 10 October 202650% grey to 80% grey 0.91 ms (rise 0.54, fall 0.37).

Measured performance

Cinebench 2024 single-core
Not available
Geekbench 6 single-core
2,420points4Measurementnotebookcheck.com/Lenovo-ThinkPad-X1-Carbon-G12-Laptop-Test-Erstes-grosses-Update-in-drei-Jahren.807241.0.htmlRead 10 October 2026Geekbench 6.7 single-core, Windows Best performance mode.
Geekbench 6 multi-core
12,171points4Measurementnotebookcheck.com/Lenovo-ThinkPad-X1-Carbon-G12-Laptop-Test-Erstes-grosses-Update-in-drei-Jahren.807241.0.htmlRead 10 October 2026Geekbench 6.7 multi-core, Windows Best performance mode.
3DMark Time Spy graphics
3,001points4Measurementnotebookcheck.com/Lenovo-ThinkPad-X1-Carbon-G12-Laptop-Test-Erstes-grosses-Update-in-drei-Jahren.807241.0.htmlRead 10 October 20263DMark Time Spy graphics score 3001 at 2560 x 1440, Windows Best performance mode.
3DMark Steel Nomad
Not available
Game frame rates
GameWidth (px)Height (px)PresetUpscalingAverage FPS
Baldur's Gate 319201080UltraNot available24.4
The Witcher 319201080Ultra (HBAO+)Not available25.5
Far Cry 519201080UltraNot available36
Cyberpunk 207719201080HighOff22.5

Measured noise and temperature

Fan noise per mode
Power modeLoadNoise (dB(A))
Windows Best performanceIdle24
Windows Best performanceMedium load31.5
Windows Best performanceGaming37.8
Windows Best performanceMax load37.8
Max fan noise
37.8dB(A)
Fan noise while gaming
37.8dB(A)
CPU temperature in stress test
Not available
CPU clock in stress test
Not available
GPU temperature while gaming
Not available

Measured battery and power

Battery runtime per test
TestPower modeHours (h)
IdleNot stated17.82
Wi-Fi browsingNot available7.77
Max loadNot available1.17
Wi-Fi browsing runtime
7.77h
Video runtime
Not available
Sustained CPU power (measured)
Not available
GPU power while gaming (measured)
Not available
Weight (measured)
Not available

Certifications

Intel Evo
Yes1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026
Copilot+ PC
Not available
Colour certifications
Not available

In the box

In the box
65W USB-C Slim (3-pin) AC adapter1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026Power adapter from the PSREF Power Adapter row. Bundled accessories: none.
Power adapter included
Yes1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026

Warranty

Manufacturer warranty (source market)
1year1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026PSREF Base Warranty: 1-year courier or carry-in. PSREF also lists an included 3Y Premier Support upgrade for this model, which is not stored.
Warranty service
Carry-in, Collect and return1Maker product pagepsref.lenovo.com/Detail/ThinkPad_X1_Carbon_Gen_12Read 10 October 2026Base warranty is courier or carry-in. The included 3Y Premier Support upgrade is not stored.

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Sources

We read 6 sources for this laptop. The numbers match the markers in the sheet.

  1. Read 10 October 2026Backs 70 fields
  2. Read 10 October 2026Backs 9 fields
  3. Read 10 October 2026Backs 1 field
  4. Read 10 October 2026Backs 32 fields
  5. Read 23 October 2026Backs 1 field
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