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💻 ThinkPad X1 Carbon Gen 13 vs Pro Max 14 vs ExpertBook B3
AI-powered analysis across 23 matched specifications
ExpertBook B3 (B3404)
ASUS
Overall Score
Best for commercial desktop replacement requiring SO-DIMM memory upgrades and native RJ45 Ethernet
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Dell Pro Max 14 Premium
Dell
Overall Score
Best for high-compute engineering workflows requiring NVIDIA RTX PRO Blackwell graphics and Thunderbolt 5
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ThinkPad X1 Carbon Gen 13
Lenovo
Overall Score
Best for travelling executives and field staff needing sub-kilogram mobility, 5G WWAN, and Copilot+ AI
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Performance Overview
Scores based on quantifiable specification values (1-10 scale)
ExpertBook B3 (B3404)
Dell Pro Max 14 Premium
ThinkPad X1 Carbon Gen 13
Performance
ExpertBook B3 (B3404)
5.5
Dell Pro Max 14 Premium
9.4
ThinkPad X1 Carbon Gen 13
7.4
Display
ExpertBook B3 (B3404)
5.8
Dell Pro Max 14 Premium
8.0
ThinkPad X1 Carbon Gen 13
9.2
Battery & Thermals
ExpertBook B3 (B3404)
5.5
Dell Pro Max 14 Premium
8.8
ThinkPad X1 Carbon Gen 13
7.8
Manageability & Security
ExpertBook B3 (B3404)
5.5
Dell Pro Max 14 Premium
8.5
ThinkPad X1 Carbon Gen 13
9.0
Expandability & Repair
ExpertBook B3 (B3404)
8.5
Dell Pro Max 14 Premium
5.0
ThinkPad X1 Carbon Gen 13
6.2
Ecosystem & Software
ExpertBook B3 (B3404)
6.0
Dell Pro Max 14 Premium
7.5
ThinkPad X1 Carbon Gen 13
8.5
Value
ExpertBook B3 (B3404)
4.0
Dell Pro Max 14 Premium
7.0
ThinkPad X1 Carbon Gen 13
7.5
Detailed Specifications
| Specification | ExpertBook B3 (B3404) ASUS | Dell Pro Max 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 | Intel Core Ultra 7 265H vPro Enterprise — 16 cores / 16 threads (6P + 8E + 2 LPE), up to 5.3 GHz, 24 MB cache, 45 W | 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 | -- | 16 cores / 16 threads (6P + 8E + 2 LPE) | 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) | NVIDIA RTX PRO Blackwell 8 GB GDDR7 discrete (1000 and 2000 tiers stocked — tier confirmed at quote) + Intel Arc Pro 140T integrated | Intel Arc Graphics 140V (258V) / Intel Graphics (255U), integrated |
| Discrete GPU | Optional NVIDIA GeForce RTX 2050 (B3404CVF) | NVIDIA RTX PRO Blackwell 8 GB GDDR7 discrete | Integrated only (Intel Arc 140V / Intel Graphics) |
| Memory & storage | |||
| Maximum memory | DDR5 SO-DIMM, 2 slots, up to 32 GB (user-upgradeable) | 32 GB LPDDR5x-8400 dual-channel, onboard — fixed at purchase (platform maximum 64 GB, factory-configured only) | 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-8400 dual-channel, onboard (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 | 1 TB M.2 2280 PCIe Gen4 NVMe TLC SSD with DRAM, SED-ready; single M.2 slot accepts 2280 or 2230 (bracket kit) | 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 touch to order) | 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) WVA anti-glare, 400 nits, 100% sRGB, 162 ppi, 30–60 Hz VRR, non-touch; QHD+ (2880 × 1800) tandem OLED touch to order | 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 touch panel to order | WUXGA touch or non-touch; 2.8K OLED touch |
| Connectivity | |||
| Thunderbolt / USB4 ports | Thunderbolt 4 (USB4) | ✓2× Thunderbolt 5 (up to 120 Gbps with Bandwidth Boost) + 2× Thunderbolt 4 (40 Gbps) — all USB-C with PD + DisplayPort 2.1 | 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 | 2× Thunderbolt 5 (USB-C, up to 120 Gbps with Bandwidth Boost, PD, DisplayPort 2.1) — also charging; 2× Thunderbolt 4 (USB-C, 40 Gbps, PD, DisplayPort 2.1), microSD reader, universal headset jack, wedge lock slot. No USB-A, HDMI or RJ-45 on the chassis | 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 | -- | No WWAN option | ✓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 1.61 kg | ✓from 986 g (Lunar Lake) / 1006 g (Arrow Lake) |
| Dimensions | 313.7 x 226.8 x 19.9-23.9 mm | 310.6 × 212.5 mm; 19.32 mm front/rear, 20.12 mm peak (FHD+ config) | 312.8 × 214.75 × 17.95 mm (WUXGA) / 16.95 mm max (OLED) |
| Security & management | |||
| Intel vPro | -- | Intel Core Ultra 7 265H vPro Enterprise; vPro Enterprise on both stocked configurations | vPro Enterprise available across the family to order |
| Copilot+ PC (40+ TOPS NPU) | -- | -- | 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 | ✓4-cell 72 Wh | 57 Wh Li-ion, Rapid Charge to 80% in 1 hr |
| Rated battery life | -- | ExpressCharge Boost 0–35% in ~20 min, ExpressCharge ~2 h; 130 W USB-C adapter (20 V / 6.5 A) | up to ~17 hr (MobileMark 25, WUXGA) |
| Support | |||
| Operating system | Windows 11 Pro (no-OS option on CVF) | Windows 11 Pro (shipped); Windows 11 Home 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 | -- | 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 Max 14 PremiumIntel Core Ultra 7 265H vPro Enterprise — 16 cores / 16 threads (6P + 8E + 2 LPE), up to 5.3 GHz, 24 MB cache, 45 W
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 Max 14 Premium16 cores / 16 threads (6P + 8E + 2 LPE)
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 Max 14 PremiumNVIDIA RTX PRO Blackwell 8 GB GDDR7 discrete (1000 and 2000 tiers stocked — tier confirmed at quote) + Intel Arc Pro 140T 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 Max 14 PremiumNVIDIA RTX PRO Blackwell 8 GB GDDR7 discrete
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 Max 14 Premium32 GB LPDDR5x-8400 dual-channel, onboard — fixed at purchase (platform maximum 64 GB, factory-configured only)
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 Max 14 PremiumLPDDR5x-8400 dual-channel, onboard (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 Max 14 Premium1 TB M.2 2280 PCIe Gen4 NVMe TLC SSD with DRAM, SED-ready; single M.2 slot accepts 2280 or 2230 (bracket kit)
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 Max 14 Premium14.0"
ThinkPad X1 Carbon Gen 1314.0″
Resolution
ExpertBook B3 (B3404)1920 x 1200
Dell Pro Max 14 Premium1920 × 1200 (QHD+ 2880 × 1800 tandem OLED touch to order)
ThinkPad X1 Carbon Gen 131920×1200 (WUXGA); 2880×1800 OLED option
Brightness
ExpertBook B3 (B3404)300 nits
Dell Pro Max 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 Max 14 Premium14.0" 16:10 FHD+ (1920 × 1200) WVA anti-glare, 400 nits, 100% sRGB, 162 ppi, 30–60 Hz VRR, non-touch; QHD+ (2880 × 1800) tandem OLED touch to order
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 Max 14 PremiumQHD+ (2880 × 1800) tandem OLED touch panel to order
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 Max 14 Premium2× Thunderbolt 5 (up to 120 Gbps with Bandwidth Boost) + 2× Thunderbolt 4 (40 Gbps) — all USB-C with PD + DisplayPort 2.1
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 Max 14 Premium2× Thunderbolt 5 (USB-C, up to 120 Gbps with Bandwidth Boost, PD, DisplayPort 2.1) — also charging; 2× Thunderbolt 4 (USB-C, 40 Gbps, PD, DisplayPort 2.1), microSD reader, universal headset jack, wedge lock slot. No USB-A, HDMI or RJ-45 on the chassis
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 Max 14 PremiumNo WWAN option
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 Max 14 PremiumFrom 1.61 kg
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 Max 14 Premium310.6 × 212.5 mm; 19.32 mm front/rear, 20.12 mm peak (FHD+ config)
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 Max 14 PremiumIntel Core Ultra 7 265H vPro Enterprise; vPro Enterprise on both stocked configurations
ThinkPad X1 Carbon Gen 13vPro Enterprise available across the family to order
Copilot+ PC (40+ TOPS NPU)
ExpertBook B3 (B3404)--
Dell Pro Max 14 Premium--
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 Max 14 Premium4-cell 72 Wh
ThinkPad X1 Carbon Gen 1357 Wh Li-ion, Rapid Charge to 80% in 1 hr
Rated battery life
ExpertBook B3 (B3404)--
Dell Pro Max 14 PremiumExpressCharge Boost 0–35% in ~20 min, ExpressCharge ~2 h; 130 W USB-C adapter (20 V / 6.5 A)
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 Max 14 PremiumWindows 11 Pro (shipped); Windows 11 Home 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 Max 14 Premium--
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 delivers the premier ultraportable fleet experience, while the Dell Pro Max Premium 14 provides unmatched workstation power and the ASUS ExpertBook B3 offers modular maintainability.
For mobile workforces requiring field connectivity and effortless travel, the ThinkPad X1 Carbon Gen 13 stands out with an ultralight chassis starting from 986 g, integrated 4G or 5G mobile broadband options, and a 500-nit panel. It also provides a 47-TOPS NPU on the Core Ultra 7 258V build for Copilot+ computing. Conversely, the Dell Pro Max Premium 14 focuses on demanding processing workflows, featuring a 45 W Intel Core Ultra 7 265H vPro Enterprise processor, NVIDIA RTX PRO Blackwell 8 GB GDDR7 discrete graphics, a generous 72 Wh battery, and dual Thunderbolt 5 connectivity alongside dual Thunderbolt 4 ports. However, the Dell weighs from 1.61 kg and lacks native USB-A, HDMI, and WWAN options.
The ASUS ExpertBook B3 serves commercial users who prioritise internal serviceability, presenting two user-upgradeable SO-DIMM slots alongside native RJ45 Gigabit Ethernet and USB-A connectivity. Nevertheless, it features a lower 300-nit baseline panel, an optional previous-generation RTX 2050 GPU, and lacks modern high-speed Thunderbolt 5 ports.
ExpertBook B3 (B3404)
Best for commercial desktop replacement requiring SO-DIMM memory upgrades and native RJ45 Ethernet
Dell Pro Max 14 Premium
Best for high-compute engineering workflows requiring NVIDIA RTX PRO Blackwell graphics and Thunderbolt 5
ThinkPad X1 Carbon Gen 13
Best for travelling executives and field staff needing sub-kilogram mobility, 5G WWAN, and Copilot+ AI
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ExpertBook B3 (B3404)
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