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Lenovo ThinkPad X1 Carbon Gen 12 (Aura Edition) vs Lenovo ThinkPad T400 (Roll Cage Legend)
Compare processor microarchitectures, maximum GPU TGP, display color accuracy, RAM upgradability, and battery Watt-hours with automated win badge analysis.
Slot 1 • Lenovo2024
Lenovo ThinkPad X1 Carbon Gen 12 (Aura Edition)
14" OLED • 1.09 kg • x86_64
Slot 2 • Lenovo2008
Lenovo ThinkPad T400 (Roll Cage Legend)
14.1" TFT LCD • 2.13 kg • x86_64
Reasons to Choose Lenovo ThinkPad X1 Carbon Gen 12 (Aura Edition)
- ✓Lighter Chassis (1.09 kg vs 2.13 kg)
- ✓Thinner Profile (14.96 mm vs 27.6 mm)
- ✓Faster Display Refresh Rate (120Hz vs 60Hz)
- ✓Higher Peak Brightness (500nits vs 250nits)
- ✓Higher Max GPU TGP (28W vs 12W)
- ✓More Thunderbolt Ports (2ports vs 0ports)
Reasons to Choose Lenovo ThinkPad T400 (Roll Cage Legend)
- ✓Larger Battery Capacity (84Wh vs 57Wh)
- ✓Higher Charger Wattage (90W vs 65W)
- ✓User-Upgradable RAM SODIMM/LPCAMM2 (vs Soldered)
01.Platform & Compute Subsystem
Processor architecture, graphics envelope, and power ceilingProcessor / SoC
Intel Core Ultra 7 155H / 165H (Meteor Lake with Intel AI Boost NPU)
Intel Core 2 Duo P8400 / P8600 / T9400 (Penryn 45nm, 3MB/6MB L2)
CPU Core Architecture
16-core / 22-thread (6P + 8E + 2 Low-Power E-cores)
2-core / 2-thread (2.26 GHz up to 2.53 GHz)
ISA Architecture
x86_64
x86_64
Graphics Hardware
Intel Arc Graphics (8 Xe-cores @ 2.25 GHz)
Switchable Graphics: ATI Mobility Radeon HD 3470 (256MB) / Intel GMA 4500MHD
Maximum Graphics TGP
28 W+16 W
12 W
Operating System
Windows 11 Pro
Windows XP Professional / Windows Vista Business
02.Memory & Storage Upgradability
RAM capacity, SODIMM vs soldered, and NVMe expansionRAM Capacity Options
16 GB / 32 GB / 64 GB LPDDR5X (Soldered)
2 GB / 4 GB / 8 GB DDR3
RAM Technology / Speed
LPDDR5X-7500 MT/s dual-channel
DDR3-1066 MHz SODIMM
RAM Upgradability
Soldered Onboard
✅ User-Upgradable✅ Upgradable RAM
RAM Sockets / Form Factor
Soldered Onboard
2x SO-DIMM (Upgradable to 8 GB)
M.2 SSD Expansion Slots
1 Slot
1 Slot
Storage Bus & Architecture
1x M.2 2280 PCIe 4.0 x4 slot with thermal pad heat shield
2.5-inch SATA II (3.0 Gbps) drive bay + Ultrabay Slim hot-swappable secondary drive
03.Display & Color Accuracy
Panel technology, screen resolution, refresh rate, and luminancePanel Technology
OLED
TFT LCD
Screen Diagonal Size
14 inches
14.1 inches
Aspect Ratio
16:10
16:10
Resolution
2880 × 1800 px (2.8K OLED, 120Hz, DisplayHDR True Black 500)
1440 × 900 px (WXGA+ LED backlit display)
Display Refresh Rate
120 Hz+60 Hz
60 Hz
Color Gamut Coverage
100% DCI-P3, 0.2ms response time
60% sRGB
Peak Brightness
500 nits+250 nits
250 nits
04.Chassis, Thermals & Battery
Enclosure weight, profile thickness, battery capacity, and chargingChassis Weight
1.09 kg-1.04 kg lighter
2.13 kg
Chassis Thickness
14.96 mm-12.64 mm lighter
27.6 mm
Chassis Materials
Recycled carbon fiber top cover with recycled magnesium unibody bottom shell
Magnesium-alloy internal Roll Cage structure with carbon-fiber reinforced plastic lid
Cooling Solution
Dual miniature fans with rear-exhaust thermal dissipation
Copper heatsink with single high-durability quiet fan and intake vents
Battery Capacity
57 Wh
84 Wh+27 Wh
Bundled Charger Wattage
65 W
90 W+25 W
USB-C Power Delivery
Yes
No
05.I/O Ports & Connectivity
High-speed buses, external display outs, and media card readersPort Complement
2x Thunderbolt 4 (USB4 40 Gbps), 2x USB-A 3.2 Gen 1 (one Always On), HDMI 2.1 (supports 4K60), 3.5mm audio jack, Nano-SIM (optional)
3x USB 2.0, VGA D-Sub video port, Gigabit Ethernet RJ-45, Modem RJ-11, IEEE 1394 FireWire 400, ExpressCard/54, 3.5mm mic in & headphone out, ThinkLight keyboard LED
Thunderbolt Ports
2x Thunderbolt+2 ports
None
HDMI Revision
HDMI 2.1 (up to 4K60)
None (VGA & DisplayPort via optional Advanced Mini Dock)
Card Reader
None Reader
None Reader
3.5mm Headphone Jack
✅ Present
✅ Present
Wireless Networking
Intel Wi-Fi 7 BE200, Bluetooth 5.4, Optional 5G Sub-6
Intel WiFi Link 5100/5300 802.11a/g/n, Bluetooth 2.1, Optional WWAN 3G