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💻 ASUS ExpertBook B3 vs Dell Pro 14 vs ThinkPad X1 Carbon Gen 13
AI-powered analysis across 23 matched specifications
ExpertBook B3 (B3404)
ASUS
Overall Score
Best for technical desk-based roles requiring upgradeable RAM, native RJ45 networking, and discrete GPU support
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Dell Pro 14 Premium
Dell
Overall Score
Best for enterprise fleet rollouts needing standardised Intel vPro, Copilot+ NPU features, and strong battery runtimes
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ThinkPad X1 Carbon Gen 13
Lenovo
Overall Score
Best for mobile professionals requiring an ultralight sub-kilogram chassis, 500-nit display, and up to 64 GB RAM
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Performance Overview
Scores based on quantifiable specification values (1-10 scale)
ExpertBook B3 (B3404)
Dell Pro 14 Premium
ThinkPad X1 Carbon Gen 13
Performance
ExpertBook B3 (B3404)
6.5
Dell Pro 14 Premium
7.5
ThinkPad X1 Carbon Gen 13
8.5
Display
ExpertBook B3 (B3404)
5.5
Dell Pro 14 Premium
7.5
ThinkPad X1 Carbon Gen 13
8.8
Battery & Thermals
ExpertBook B3 (B3404)
6.0
Dell Pro 14 Premium
8.2
ThinkPad X1 Carbon Gen 13
7.8
Manageability & Security
ExpertBook B3 (B3404)
5.5
Dell Pro 14 Premium
8.5
ThinkPad X1 Carbon Gen 13
8.0
Expandability & Repair
ExpertBook B3 (B3404)
8.5
Dell Pro 14 Premium
5.5
ThinkPad X1 Carbon Gen 13
5.0
Ecosystem & Software
ExpertBook B3 (B3404)
6.0
Dell Pro 14 Premium
7.5
ThinkPad X1 Carbon Gen 13
7.5
Value
ExpertBook B3 (B3404)
5.5
Dell Pro 14 Premium
7.5
ThinkPad X1 Carbon Gen 13
8.5
Detailed Specifications
| Specification | ExpertBook B3 (B3404) ASUS | Dell Pro 14 Premium Dell | ThinkPad X1 Carbon Gen 13 Lenovo |
|---|---|---|---|
| Performance | |||
| Processor | Intel Core Ultra 7 155U / Core Ultra 5 125U (AI Boost NPU), or 13th-gen Core i7-1355U / i5-1335U / i5-1340P | Copilot+ Intel Core Ultra 200V "Lunar Lake", 8C/8T, 17.5 W, vPro Enterprise — Ultra 5 236V / 238V (4.7 GHz, 8 MB) or Ultra 7 266V / 268V (5 GHz, 12 MB) | Intel Core Ultra 5/7 Series 2 — Lunar Lake (V, Copilot+) and Arrow Lake (U/H). Stocked: Core Ultra 7 258V (Copilot+) · Core Ultra 7 255U |
| CPU cores | -- | 8C/8T (Copilot+ Lunar Lake, 17.5 W) | Core Ultra 7 258V (Lunar Lake, 8-core); Core Ultra 7 255U (Arrow Lake, 12-core / 14-thread) |
| Graphics | Intel integrated; optional NVIDIA GeForce RTX 2050 (B3404CVF) | Intel Arc 130V (Ultra 5) / Arc 140V (Ultra 7), integrated | Intel Arc Graphics 140V (258V) / Intel Graphics (255U), integrated |
| Discrete GPU | ✓Optional NVIDIA GeForce RTX 2050 (B3404CVF) | Integrated Intel Arc graphics | Integrated only (Intel Arc 140V / Intel Graphics) |
| Memory & storage | |||
| Maximum memory | DDR5 SO-DIMM, 2 slots, up to 32 GB (user-upgradeable) | 16 or 32 GB LPDDR5x-8533 on-package — fixed at order, not upgradeable; platform maximum 32 GB | ✓16 / 32 / 64 GB LPDDR5x soldered, dual-channel, not upgradable — Lunar Lake LPDDR5x-8533 to 32 GB · Arrow Lake LPDDR5x-8400 to 64 GB |
| Memory type | DDR5 SO-DIMM, 2 slots (user-upgradeable) | LPDDR5x-8533 on-package (fixed at order) | LPDDR5x soldered, dual-channel (LPDDR5x-8533 / 8400) |
| Maximum storage | Up to 1 TB M.2 2280 PCIe 4.0 NVMe SSD; TCG Opal 2.0 SED option; second M.2 2230 slot on select SKUs | 512 GB M.2 2230 PCIe Gen4 x4 NVMe TLC on all six; platform options 256 GB–2 TB including 512 GB SED Opal 2.0 | M.2 2280 NVMe, Opal 2.0, up to 2 TB — PCIe 5.0 x4 (V/H) or PCIe 4.0 x4 (U). Single drive |
| Display | |||
| Display size | 14.0" | 14.0" | 14.0″ |
| Resolution | 1920 x 1200 | 1920 × 1200 (QHD+ 2880 × 1800 Tandem OLED on VPJ93) | 1920×1200 (WUXGA); 2880×1800 OLED option |
| Brightness | 300 nits | 400 nits | ✓WUXGA 500-nit; 2.8K OLED |
| Panel | 14.0" WUXGA (1920 x 1200) IPS 16:10, 300 nits, anti-glare; WQXGA (2560 x 1600) 500-nit touch option (CVF) | 14.0" 16:10 — FHD+ 1920 × 1200 anti-glare, 400 nits, 100% sRGB, 1200:1, ComfortView Plus (five stocked builds); QHD+ 2880 × 1800 Tandem OLED touch, 400 nits, 100% DCI-P3, Gorilla Glass Victus (VPJ93) | WUXGA IPS anti-glare / 2.8K OLED 120 Hz, DisplayHDR True Black 500 |
| Touchscreen | WQXGA (2560 x 1600) 500-nit touch option (CVF) | QHD+ 2880 × 1800 Tandem OLED touchscreen (VPJ93 build) | WUXGA touch or non-touch; 2.8K OLED touch |
| Connectivity | |||
| Thunderbolt / USB4 ports | Thunderbolt 4 (USB4) | 2× Thunderbolt 4 (USB-C, DisplayPort alt mode, Power Delivery) — either TB4 port charges the machine | 2× Thunderbolt 4 / USB4 40 Gbps (DisplayPort 2.1, PD 15–65 W) |
| Ports | Thunderbolt 4 (USB4), 2x USB 3.2 Gen 2 Type-A, USB 3.2 Gen 2 Type-C (PD), HDMI 2.1, RJ45 Gigabit LAN, smart-card reader, 3.5 mm combo | Left: Thunderbolt 4 (USB-C, DisplayPort alt mode, Power Delivery), HDMI 2.1, universal audio jack, battery LED. Right: Thunderbolt 4, USB-A 3.2 Gen 1 with PowerShare, wedge lock slot (nano-SIM tray on 5G builds only) | 2× Thunderbolt 4 / USB4 40 Gbps (DisplayPort 2.1, PD 15–65 W), 2× USB-A 5 Gbps (one Always On), HDMI 2.1 (4K/60 Hz), 3.5 mm combo; nano-SIM on WWAN builds. No card reader, no onboard Ethernet |
| Mobile broadband (4G/5G) option | -- | Optional 5G (Snapdragon X72, eSIM) to order — stocked builds are WLAN-only | Optional Quectel RM520N-GL 5G Sub-6 or EM160R-GL 4G LTE CAT16, embedded eSIM |
| Physical | |||
| Weight (from) | From 1.40 kg (3.09 lb); from 1.54 kg with discrete GPU | From 1.14 kg (2.52 lb), configuration-dependent | ✓from 986 g (Lunar Lake) / 1006 g (Arrow Lake) |
| Dimensions | 313.7 x 226.8 x 19.9-23.9 mm | 311.2 × 216.7 mm, 16.4 mm (front) – 17.0 mm (rear) | 312.8 × 214.75 × 17.95 mm (WUXGA) / 16.95 mm max (OLED) |
| Security & management | |||
| Intel vPro | -- | Copilot+ Intel Core Ultra 200V vPro Enterprise — vPro Enterprise on every stocked build | vPro Enterprise available across the family to order |
| Copilot+ PC (40+ TOPS NPU) | -- | Intel AI Boost — up to 40 TOPS (Ultra 5) or 48 TOPS (Ultra 7); Copilot+ PC on all stocked builds | Copilot+ on the Core Ultra 7 258V (47-TOPS NPU) |
| Battery | |||
| Battery capacity | 50 Wh (63 Wh on CVF), 3-cell Li-ion; 65 W / 90 W USB-C charging | ✓3-cell 60 Wh, customer-replaceable | 57 Wh Li-ion, Rapid Charge to 80% in 1 hr |
| Rated battery life | -- | ExpressCharge Boost 0–35% in 20 min, ExpressCharge 0–80% in 60 min; charges via either TB4 port; 60/65/100 W USB-C adapters | up to ~17 hr (MobileMark 25, WUXGA) |
| Support | |||
| Operating system | Windows 11 Pro (no-OS option on CVF) | Windows 11 Pro (stocked); Windows 11 23H2/24H2, Windows 10 22H2 downgrade and Ubuntu 24.04 LTS supported | Windows 11 Pro (stocked); Windows 11 Home / Ubuntu / Fedora Linux to order |
| Base warranty | 1-year commercial warranty; ASUS extended / on-site uplift available | Dell business warranty — cover level varies by configuration; ProSupport uplifts quoted | Base 1-year or 3-year courier / carry-in / onsite; Lenovo Premier Support uplift (to 5-year + ADP) quoted per configuration |
Performance
Processor
ExpertBook B3 (B3404)Intel Core Ultra 7 155U / Core Ultra 5 125U (AI Boost NPU), or 13th-gen Core i7-1355U / i5-1335U / i5-1340P
Dell Pro 14 PremiumCopilot+ Intel Core Ultra 200V "Lunar Lake", 8C/8T, 17.5 W, vPro Enterprise — Ultra 5 236V / 238V (4.7 GHz, 8 MB) or Ultra 7 266V / 268V (5 GHz, 12 MB)
ThinkPad X1 Carbon Gen 13Intel Core Ultra 5/7 Series 2 — Lunar Lake (V, Copilot+) and Arrow Lake (U/H). Stocked: Core Ultra 7 258V (Copilot+) · Core Ultra 7 255U
CPU cores
ExpertBook B3 (B3404)--
Dell Pro 14 Premium8C/8T (Copilot+ Lunar Lake, 17.5 W)
ThinkPad X1 Carbon Gen 13Core Ultra 7 258V (Lunar Lake, 8-core); Core Ultra 7 255U (Arrow Lake, 12-core / 14-thread)
Graphics
ExpertBook B3 (B3404)Intel integrated; optional NVIDIA GeForce RTX 2050 (B3404CVF)
Dell Pro 14 PremiumIntel Arc 130V (Ultra 5) / Arc 140V (Ultra 7), integrated
ThinkPad X1 Carbon Gen 13Intel Arc Graphics 140V (258V) / Intel Graphics (255U), integrated
Discrete GPU
ExpertBook B3 (B3404)Optional NVIDIA GeForce RTX 2050 (B3404CVF)
Dell Pro 14 PremiumIntegrated Intel Arc graphics
ThinkPad X1 Carbon Gen 13Integrated only (Intel Arc 140V / Intel Graphics)
Memory & storage
Maximum memory
ExpertBook B3 (B3404)DDR5 SO-DIMM, 2 slots, up to 32 GB (user-upgradeable)
Dell Pro 14 Premium16 or 32 GB LPDDR5x-8533 on-package — fixed at order, not upgradeable; platform maximum 32 GB
ThinkPad X1 Carbon Gen 1316 / 32 / 64 GB LPDDR5x soldered, dual-channel, not upgradable — Lunar Lake LPDDR5x-8533 to 32 GB · Arrow Lake LPDDR5x-8400 to 64 GB
Memory type
ExpertBook B3 (B3404)DDR5 SO-DIMM, 2 slots (user-upgradeable)
Dell Pro 14 PremiumLPDDR5x-8533 on-package (fixed at order)
ThinkPad X1 Carbon Gen 13LPDDR5x soldered, dual-channel (LPDDR5x-8533 / 8400)
Maximum storage
ExpertBook B3 (B3404)Up to 1 TB M.2 2280 PCIe 4.0 NVMe SSD; TCG Opal 2.0 SED option; second M.2 2230 slot on select SKUs
Dell Pro 14 Premium512 GB M.2 2230 PCIe Gen4 x4 NVMe TLC on all six; platform options 256 GB–2 TB including 512 GB SED Opal 2.0
ThinkPad X1 Carbon Gen 13M.2 2280 NVMe, Opal 2.0, up to 2 TB — PCIe 5.0 x4 (V/H) or PCIe 4.0 x4 (U). Single drive
Display
Display size
ExpertBook B3 (B3404)14.0"
Dell Pro 14 Premium14.0"
ThinkPad X1 Carbon Gen 1314.0″
Resolution
ExpertBook B3 (B3404)1920 x 1200
Dell Pro 14 Premium1920 × 1200 (QHD+ 2880 × 1800 Tandem OLED on VPJ93)
ThinkPad X1 Carbon Gen 131920×1200 (WUXGA); 2880×1800 OLED option
Brightness
ExpertBook B3 (B3404)300 nits
Dell Pro 14 Premium400 nits
ThinkPad X1 Carbon Gen 13WUXGA 500-nit; 2.8K OLED
Panel
ExpertBook B3 (B3404)14.0" WUXGA (1920 x 1200) IPS 16:10, 300 nits, anti-glare; WQXGA (2560 x 1600) 500-nit touch option (CVF)
Dell Pro 14 Premium14.0" 16:10 — FHD+ 1920 × 1200 anti-glare, 400 nits, 100% sRGB, 1200:1, ComfortView Plus (five stocked builds); QHD+ 2880 × 1800 Tandem OLED touch, 400 nits, 100% DCI-P3, Gorilla Glass Victus (VPJ93)
ThinkPad X1 Carbon Gen 13WUXGA IPS anti-glare / 2.8K OLED 120 Hz, DisplayHDR True Black 500
Touchscreen
ExpertBook B3 (B3404)WQXGA (2560 x 1600) 500-nit touch option (CVF)
Dell Pro 14 PremiumQHD+ 2880 × 1800 Tandem OLED touchscreen (VPJ93 build)
ThinkPad X1 Carbon Gen 13WUXGA touch or non-touch; 2.8K OLED touch
Connectivity
Thunderbolt / USB4 ports
ExpertBook B3 (B3404)Thunderbolt 4 (USB4)
Dell Pro 14 Premium2× Thunderbolt 4 (USB-C, DisplayPort alt mode, Power Delivery) — either TB4 port charges the machine
ThinkPad X1 Carbon Gen 132× Thunderbolt 4 / USB4 40 Gbps (DisplayPort 2.1, PD 15–65 W)
Ports
ExpertBook B3 (B3404)Thunderbolt 4 (USB4), 2x USB 3.2 Gen 2 Type-A, USB 3.2 Gen 2 Type-C (PD), HDMI 2.1, RJ45 Gigabit LAN, smart-card reader, 3.5 mm combo
Dell Pro 14 PremiumLeft: Thunderbolt 4 (USB-C, DisplayPort alt mode, Power Delivery), HDMI 2.1, universal audio jack, battery LED. Right: Thunderbolt 4, USB-A 3.2 Gen 1 with PowerShare, wedge lock slot (nano-SIM tray on 5G builds only)
ThinkPad X1 Carbon Gen 132× Thunderbolt 4 / USB4 40 Gbps (DisplayPort 2.1, PD 15–65 W), 2× USB-A 5 Gbps (one Always On), HDMI 2.1 (4K/60 Hz), 3.5 mm combo; nano-SIM on WWAN builds. No card reader, no onboard Ethernet
Mobile broadband (4G/5G) option
ExpertBook B3 (B3404)--
Dell Pro 14 PremiumOptional 5G (Snapdragon X72, eSIM) to order — stocked builds are WLAN-only
ThinkPad X1 Carbon Gen 13Optional Quectel RM520N-GL 5G Sub-6 or EM160R-GL 4G LTE CAT16, embedded eSIM
Physical
Weight (from)
ExpertBook B3 (B3404)From 1.40 kg (3.09 lb); from 1.54 kg with discrete GPU
Dell Pro 14 PremiumFrom 1.14 kg (2.52 lb), configuration-dependent
ThinkPad X1 Carbon Gen 13from 986 g (Lunar Lake) / 1006 g (Arrow Lake)
Dimensions
ExpertBook B3 (B3404)313.7 x 226.8 x 19.9-23.9 mm
Dell Pro 14 Premium311.2 × 216.7 mm, 16.4 mm (front) – 17.0 mm (rear)
ThinkPad X1 Carbon Gen 13312.8 × 214.75 × 17.95 mm (WUXGA) / 16.95 mm max (OLED)
Security & management
Intel vPro
ExpertBook B3 (B3404)--
Dell Pro 14 PremiumCopilot+ Intel Core Ultra 200V vPro Enterprise — vPro Enterprise on every stocked build
ThinkPad X1 Carbon Gen 13vPro Enterprise available across the family to order
Copilot+ PC (40+ TOPS NPU)
ExpertBook B3 (B3404)--
Dell Pro 14 PremiumIntel AI Boost — up to 40 TOPS (Ultra 5) or 48 TOPS (Ultra 7); Copilot+ PC on all stocked builds
ThinkPad X1 Carbon Gen 13Copilot+ on the Core Ultra 7 258V (47-TOPS NPU)
Battery
Battery capacity
ExpertBook B3 (B3404)50 Wh (63 Wh on CVF), 3-cell Li-ion; 65 W / 90 W USB-C charging
Dell Pro 14 Premium3-cell 60 Wh, customer-replaceable
ThinkPad X1 Carbon Gen 1357 Wh Li-ion, Rapid Charge to 80% in 1 hr
Rated battery life
ExpertBook B3 (B3404)--
Dell Pro 14 PremiumExpressCharge Boost 0–35% in 20 min, ExpressCharge 0–80% in 60 min; charges via either TB4 port; 60/65/100 W USB-C adapters
ThinkPad X1 Carbon Gen 13up to ~17 hr (MobileMark 25, WUXGA)
Support
Operating system
ExpertBook B3 (B3404)Windows 11 Pro (no-OS option on CVF)
Dell Pro 14 PremiumWindows 11 Pro (stocked); Windows 11 23H2/24H2, Windows 10 22H2 downgrade and Ubuntu 24.04 LTS supported
ThinkPad X1 Carbon Gen 13Windows 11 Pro (stocked); Windows 11 Home / Ubuntu / Fedora Linux to order
Base warranty
ExpertBook B3 (B3404)1-year commercial warranty; ASUS extended / on-site uplift available
Dell Pro 14 PremiumDell business warranty — cover level varies by configuration; ProSupport uplifts quoted
ThinkPad X1 Carbon Gen 13Base 1-year or 3-year courier / carry-in / onsite; Lenovo Premier Support uplift (to 5-year + ADP) quoted per configuration
★
Expert Analysis
Specs web-verified from manufacturer datasheets · Servnet-reviewed · Last reviewed 8 Sept 2026
The Lenovo ThinkPad X1 Carbon Gen 13 is the overall recommendation for corporate fleets prioritising ultra-light portability, top display brightness, and high memory capacity. Across the comparative specifications, Lenovo takes decisive leads with a sub-kilogram chassis starting from 986 g, a 500-nit panel, and memory ceiling scaling to 64 GB LPDDR5x alongside PCIe 5.0 storage options. However, its memory is non-upgradeable and it lacks native Ethernet. For organisations requiring standard enterprise manageability, the Dell Pro Premium 14 provides Intel vPro Enterprise and 40-plus TOPS Copilot+ compliance across all stocked models, paired with the largest battery at 60 Wh and customer-replaceable design, though system memory is fixed at a maximum of 32 GB on-package. Conversely, the ASUS ExpertBook B3 serves environments where hardware expandability and legacy connectivity remain essential. It provides dual SO-DIMM slots for user-upgradeable DDR5 memory, an optional secondary M.2 storage slot, native RJ45 Gigabit LAN, a smart-card reader, and an optional discrete NVIDIA GeForce RTX 2050 GPU. These advantages come at the cost of mobility, as the ExpertBook B3 is the heaviest chassis at 1.40 kg and features the dimmest entry display at 300 nits.
ExpertBook B3 (B3404)
Best for technical desk-based roles requiring upgradeable RAM, native RJ45 networking, and discrete GPU support
Dell Pro 14 Premium
Best for enterprise fleet rollouts needing standardised Intel vPro, Copilot+ NPU features, and strong battery runtimes
ThinkPad X1 Carbon Gen 13
Best for mobile professionals requiring an ultralight sub-kilogram chassis, 500-nit display, and up to 64 GB RAM
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ExpertBook B3 (B3404)
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