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💻 ExpertBook B5 vs Pro Premium 14 vs ThinkPad X1 Carbon Gen 13
AI-powered analysis across 23 matched specifications
ExpertBook B5 (B5404 / B5604)
ASUS
Overall Score
Best for technical professionals and desk-based engineers requiring discrete graphics, physical RJ45 connectivity, and upgradeable memory.
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Dell Pro 14 Premium
Dell
Overall Score
Best for enterprise fleets standardising on standardised Copilot+ Lunar Lake architecture with out-of-the-box vPro Enterprise management.
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ThinkPad X1 Carbon Gen 13
Lenovo
Overall Score
Best for highly mobile executives and power users seeking sub-kilogram travel weight and up to 64 GB memory.
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Performance Overview
Scores based on quantifiable specification values (1-10 scale)
ExpertBook B5 (B5404 / B5604)
Dell Pro 14 Premium
ThinkPad X1 Carbon Gen 13
Performance
ExpertBook B5 (B5404 / B5604)
7.6
Dell Pro 14 Premium
7.2
ThinkPad X1 Carbon Gen 13
8.2
Display
ExpertBook B5 (B5404 / B5604)
7.7
Dell Pro 14 Premium
7.5
ThinkPad X1 Carbon Gen 13
8.1
Battery & Thermals
ExpertBook B5 (B5404 / B5604)
8.0
Dell Pro 14 Premium
7.5
ThinkPad X1 Carbon Gen 13
7.2
Manageability & Security
ExpertBook B5 (B5404 / B5604)
7.2
Dell Pro 14 Premium
8.4
ThinkPad X1 Carbon Gen 13
8.0
Expandability & Repair
ExpertBook B5 (B5404 / B5604)
8.9
Dell Pro 14 Premium
5.8
ThinkPad X1 Carbon Gen 13
6.2
Ecosystem & Software
ExpertBook B5 (B5404 / B5604)
7.0
Dell Pro 14 Premium
7.7
ThinkPad X1 Carbon Gen 13
7.9
Value
ExpertBook B5 (B5404 / B5604)
7.5
Dell Pro 14 Premium
5.5
ThinkPad X1 Carbon Gen 13
7.8
Detailed Specifications
| Specification | ExpertBook B5 (B5404 / B5604) ASUS | Dell Pro 14 Premium Dell | ThinkPad X1 Carbon Gen 13 Lenovo |
|---|---|---|---|
| Performance | |||
| Processor | Intel Core Ultra 7 165H/155H/155U or Core Ultra 5 135H/125H/125U (Series 1, vPro options) with AI Boost NPU | 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 Arc Graphics integrated; optional NVIDIA GeForce RTX (B5604) | 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 (B5604) | 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 2 TB M.2 2280 PCIe 4.0 NVMe SSD; TCG Opal 2.0 SED option; second drive 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" or 16" (B5404 / B5604) | 14.0" | 14.0″ |
| Resolution | 2560 x 1600 | 1920 × 1200 (QHD+ 2880 × 1800 Tandem OLED on VPJ93) | 1920×1200 (WUXGA); 2880×1800 OLED option |
| Brightness | up to 500 nits | 400 nits | WUXGA 500-nit; 2.8K OLED |
| Panel | 14" or 16" WQXGA (2560 x 1600) IPS 16:10, up to 500 nits, 100% DCI-P3, anti-glare; WUXGA and touch options | 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 | WUXGA and touch options | QHD+ 2880 × 1800 Tandem OLED touchscreen (VPJ93 build) | WUXGA touch or non-touch; 2.8K OLED touch |
| Connectivity | |||
| Thunderbolt / USB4 ports | 2x 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 | 2x Thunderbolt 4 (USB4), 2x USB 3.2 Gen 2 Type-A, 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 4G LTE (selected territories) | 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 1.29 kg (14" B5404); from 1.42 kg with discrete GPU | From 1.14 kg (2.52 lb), configuration-dependent | ✓from 986 g (Lunar Lake) / 1006 g (Arrow Lake) |
| Dimensions | 14": 313.7 x 226.8 x 18.9-23.0 mm (16" B5604 larger footprint) | 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 | Intel Core Ultra vPro options | 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 | ✓63 Wh (50 Wh on some SKUs), 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 (Pro Education / Home options) | 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 B5 (B5404 / B5604)Intel Core Ultra 7 165H/155H/155U or Core Ultra 5 135H/125H/125U (Series 1, vPro options) with AI Boost NPU
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 B5 (B5404 / B5604)--
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 B5 (B5404 / B5604)Intel Arc Graphics integrated; optional NVIDIA GeForce RTX (B5604)
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 B5 (B5404 / B5604)Optional NVIDIA GeForce RTX (B5604)
Dell Pro 14 PremiumIntegrated Intel Arc graphics
ThinkPad X1 Carbon Gen 13Integrated only (Intel Arc 140V / Intel Graphics)
Memory & storage
Maximum memory
ExpertBook B5 (B5404 / B5604)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 B5 (B5404 / B5604)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 B5 (B5404 / B5604)Up to 2 TB M.2 2280 PCIe 4.0 NVMe SSD; TCG Opal 2.0 SED option; second drive 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 B5 (B5404 / B5604)14" or 16" (B5404 / B5604)
Dell Pro 14 Premium14.0"
ThinkPad X1 Carbon Gen 1314.0″
Resolution
ExpertBook B5 (B5404 / B5604)2560 x 1600
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 B5 (B5404 / B5604)up to 500 nits
Dell Pro 14 Premium400 nits
ThinkPad X1 Carbon Gen 13WUXGA 500-nit; 2.8K OLED
Panel
ExpertBook B5 (B5404 / B5604)14" or 16" WQXGA (2560 x 1600) IPS 16:10, up to 500 nits, 100% DCI-P3, anti-glare; WUXGA and touch options
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 B5 (B5404 / B5604)WUXGA and touch options
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 B5 (B5404 / B5604)2x 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 B5 (B5404 / B5604)2x Thunderbolt 4 (USB4), 2x USB 3.2 Gen 2 Type-A, 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 B5 (B5404 / B5604)optional 4G LTE (selected territories)
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 B5 (B5404 / B5604)From 1.29 kg (14" B5404); from 1.42 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 B5 (B5404 / B5604)14": 313.7 x 226.8 x 18.9-23.0 mm (16" B5604 larger footprint)
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 B5 (B5404 / B5604)Intel Core Ultra vPro options
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 B5 (B5404 / B5604)--
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 B5 (B5404 / B5604)63 Wh (50 Wh on some SKUs), 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 B5 (B5404 / B5604)--
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 B5 (B5404 / B5604)Windows 11 Pro (Pro Education / Home options)
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 B5 (B5404 / B5604)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 premier choice for mobile executives requiring exceptional portability and memory capacity, whereas the ASUS ExpertBook B5 and Dell Pro Premium 14 target distinct functional priorities. Weighing from just 986 g, the ThinkPad X1 Carbon Gen 13 is the lightest device in this comparison and uniquely extends memory up to 64 GB of soldered LPDDR5x, backed by PCIe 5.0 storage and a 500-nit WUXGA or 2.8K OLED panel. Conversely, the ASUS ExpertBook B5 prioritises modularity and graphics versatility; it is the sole system providing user-upgradeable SO-DIMM memory across two slots, dual-drive storage potential, native RJ45 Ethernet, and optional discrete NVIDIA GeForce RTX graphics, alongside the largest battery capacity at 63 Wh. The Dell Pro Premium 14 occupies a streamlined middle tier, offering Intel Core Ultra 200V Lunar Lake processors with Copilot+ AI Boost across all stocked configurations, integrated vPro Enterprise, and an optional QHD+ Tandem OLED touchscreen, housed in a 1.14 kg chassis with customer-replaceable 60 Wh battery. Organisations demanding ultra-light mobility and 64 GB ceilings should choose Lenovo, whilst ASUS suits field engineers needing legacy ports and modular repair, and Dell delivers unified Copilot+ Lunar Lake fleet management.
ExpertBook B5 (B5404 / B5604)
Best for technical professionals and desk-based engineers requiring discrete graphics, physical RJ45 connectivity, and upgradeable memory.
Dell Pro 14 Premium
Best for enterprise fleets standardising on standardised Copilot+ Lunar Lake architecture with out-of-the-box vPro Enterprise management.
ThinkPad X1 Carbon Gen 13
Best for highly mobile executives and power users seeking sub-kilogram travel weight and up to 64 GB memory.
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ExpertBook B5 (B5404 / B5604)
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