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