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💻 ExpertBook B5 vs EliteBook X G1a vs ThinkPad X1 Carbon Gen 12
AI-powered analysis across 23 matched specifications
ExpertBook B5 (B5404 / B5604)
ASUS
Overall Score
Best for office-based professionals requiring discrete graphics, native Ethernet, and upgradeable memory
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HP EliteBook X G1a 14 inch
HP
Overall Score
Best for power users demanding local Copilot+ AI acceleration and maximum battery endurance
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ThinkPad X1 Carbon Gen 12
Lenovo
Overall Score
Best for mobile executives needing an ultralight chassis with optional 5G cellular connectivity
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Performance Overview
Scores based on quantifiable specification values (1-10 scale)
ExpertBook B5 (B5404 / B5604)
HP EliteBook X G1a 14 inch
ThinkPad X1 Carbon Gen 12
Performance
ExpertBook B5 (B5404 / B5604)
8.4
HP EliteBook X G1a 14 inch
8.7
ThinkPad X1 Carbon Gen 12
7.4
Display
ExpertBook B5 (B5404 / B5604)
8.3
HP EliteBook X G1a 14 inch
8.1
ThinkPad X1 Carbon Gen 12
7.9
Battery & Thermals
ExpertBook B5 (B5404 / B5604)
7.2
HP EliteBook X G1a 14 inch
9.0
ThinkPad X1 Carbon Gen 12
6.8
Manageability & Security
ExpertBook B5 (B5404 / B5604)
7.8
HP EliteBook X G1a 14 inch
8.5
ThinkPad X1 Carbon Gen 12
7.9
Expandability & Repair
ExpertBook B5 (B5404 / B5604)
9.2
HP EliteBook X G1a 14 inch
5.8
ThinkPad X1 Carbon Gen 12
5.5
Ecosystem & Software
ExpertBook B5 (B5404 / B5604)
7.5
HP EliteBook X G1a 14 inch
8.2
ThinkPad X1 Carbon Gen 12
8.0
Value
ExpertBook B5 (B5404 / B5604)
7.8
HP EliteBook X G1a 14 inch
6.5
ThinkPad X1 Carbon Gen 12
6.2
Detailed Specifications
| Specification | ExpertBook B5 (B5404 / B5604) ASUS | HP EliteBook X G1a 14 inch HP | ThinkPad X1 Carbon Gen 12 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 | AMD Ryzen AI PRO 300 series - up to Ryzen AI 9 HX 375 (12C/24T, up to 5.1 GHz, 24 MB L3) | Intel Core Ultra Series 1 (Meteor Lake), U/H-series. Stocked: Core Ultra 5 125U (12C/14T) · Core Ultra 7 155U (12C/14T, to 4.8 GHz, 12 MB). 135U/165U and 16-core 155H/165H to order |
| CPU cores | -- | Up to 12 cores / 24 threads (Ryzen AI 9 HX 375) | Core Ultra 5 125U / Core Ultra 7 155U — 12 cores / 14 threads (Meteor Lake) |
| Graphics | Intel Arc Graphics integrated; optional NVIDIA GeForce RTX (B5604) | Integrated AMD Radeon 890M / 880M | Intel Graphics integrated (Intel Arc Graphics on H-series) |
| Discrete GPU | ✓Optional NVIDIA GeForce RTX (B5604) | Integrated AMD Radeon only | Integrated only |
| Memory & storage | |||
| Maximum memory | DDR5 SO-DIMM, 2 slots, up to 32 GB (user-upgradeable) | Up to 64 GB LPDDR5x-8533 (on-board) | 16 / 32 / 64 GB LPDDR5x-6400 soldered, 8-channel, not upgradable |
| Memory type | DDR5 SO-DIMM, 2 slots (user-upgradeable) | LPDDR5x-8533 (on-board) | LPDDR5x-6400 soldered (installed 7500-class, runs at 6400) |
| 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 | Up to 2 TB PCIe NVMe M.2 SSD | One M.2 2280 PCIe 4.0 x4 NVMe SSD, Opal 2.0, up to 2 TB. Single drive, no card reader |
| Display | |||
| Display size | 14" or 16" (B5404 / B5604) | 14" 2.8K OLED touch | 14.0″ |
| Resolution | 2560 x 1600 | 2880×1800 | 1920×1200 (WUXGA); 2880×1800 OLED option |
| Brightness | ✓up to 500 nits | 400 nits | WUXGA 400-nit; 500-nit Privacy Guard option; 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 | OLED touch, 100% DCI-P3, up to 120 Hz | WUXGA IPS anti-glare / 2.8K OLED 120 Hz touch, DisplayHDR True Black 500 |
| Touchscreen | WUXGA and touch options | 2.8K OLED touch | WUXGA touch or non-touch; 2.8K OLED touch |
| Connectivity | |||
| Thunderbolt / USB4 ports | 2x Thunderbolt 4 (USB4) | 2x USB4 Type-C 40Gbps (PD, DP 2.1) — USB4, not Thunderbolt (AMD platform) | 2× Thunderbolt 4 / USB4 40 Gbps (DisplayPort 2.1, USB PD 3.0) |
| 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 | 2x USB4 Type-C 40Gbps (PD, DP 2.1), 1x USB-C 10Gbps, 1x USB-A 10Gbps (powered), HDMI 2.1, headset combo | 2× Thunderbolt 4 / USB4 40 Gbps (DisplayPort 2.1, USB PD 3.0), 2× USB-A 5 Gbps (one Always On), HDMI 2.1 (4K/60 Hz), 3.5 mm combo; nano-SIM on WWAN builds. No onboard Ethernet |
| Mobile broadband (4G/5G) option | optional 4G LTE (selected territories) | -- | 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 1.49 kg | ✓from 1.08 kg (1.09 kg with haptic touchpad) |
| Dimensions | 14": 313.7 x 226.8 x 18.9-23.0 mm (16" B5604 larger footprint) | -- | 312.8 × 214.75 × 14.96 mm |
| Security & management | |||
| Intel vPro | Intel Core Ultra vPro options | N/A — AMD Ryzen AI platform; Intel vPro not offered (AMD PRO manageability instead) | vPro-capable (per Wireless spec) |
| Copilot+ PC (40+ TOPS NPU) | -- | ✓Copilot+ PC — AMD Ryzen AI NPU up to 55 TOPS | AI PC — Intel AI Boost NPU up to 11 TOPS, below the 40-TOPS Copilot+ bar |
| Battery | |||
| Battery capacity | 63 Wh (50 Wh on some SKUs), 3-cell Li-ion; 65 W / 90 W USB-C charging | ✓74.5 Wh, 4-cell Li-Polymer; USB-C Power Delivery charging | 57 Wh Li-ion, Rapid Charge to 80% in 1 hr |
| Rated battery life | -- | -- | up to ~16 hr (MobileMark 25, WUXGA / 125U) |
| Support | |||
| Operating system | Windows 11 Pro (Pro Education / Home options) | Windows 11 Pro | Windows 11 Pro (stocked); Windows 11 Home / Ubuntu / Fedora Linux to order |
| Base warranty | 1-year commercial warranty; ASUS extended / on-site uplift available | HP standard commercial warranty; HP Care Pack uplifts and Wolf Pro Security licence extensions available | Lenovo base warranty (cover varies by configuration); Lenovo Premier Support uplift (to 3/5-year, ADP options) quoted |
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
HP EliteBook X G1a 14 inchAMD Ryzen AI PRO 300 series - up to Ryzen AI 9 HX 375 (12C/24T, up to 5.1 GHz, 24 MB L3)
ThinkPad X1 Carbon Gen 12Intel Core Ultra Series 1 (Meteor Lake), U/H-series. Stocked: Core Ultra 5 125U (12C/14T) · Core Ultra 7 155U (12C/14T, to 4.8 GHz, 12 MB). 135U/165U and 16-core 155H/165H to order
CPU cores
ExpertBook B5 (B5404 / B5604)--
HP EliteBook X G1a 14 inchUp to 12 cores / 24 threads (Ryzen AI 9 HX 375)
ThinkPad X1 Carbon Gen 12Core Ultra 5 125U / Core Ultra 7 155U — 12 cores / 14 threads (Meteor Lake)
Graphics
ExpertBook B5 (B5404 / B5604)Intel Arc Graphics integrated; optional NVIDIA GeForce RTX (B5604)
HP EliteBook X G1a 14 inchIntegrated AMD Radeon 890M / 880M
ThinkPad X1 Carbon Gen 12Intel Graphics integrated (Intel Arc Graphics on H-series)
Discrete GPU
ExpertBook B5 (B5404 / B5604)Optional NVIDIA GeForce RTX (B5604)
HP EliteBook X G1a 14 inchIntegrated AMD Radeon only
ThinkPad X1 Carbon Gen 12Integrated only
Memory & storage
Maximum memory
ExpertBook B5 (B5404 / B5604)DDR5 SO-DIMM, 2 slots, up to 32 GB (user-upgradeable)
HP EliteBook X G1a 14 inchUp to 64 GB LPDDR5x-8533 (on-board)
ThinkPad X1 Carbon Gen 1216 / 32 / 64 GB LPDDR5x-6400 soldered, 8-channel, not upgradable
Memory type
ExpertBook B5 (B5404 / B5604)DDR5 SO-DIMM, 2 slots (user-upgradeable)
HP EliteBook X G1a 14 inchLPDDR5x-8533 (on-board)
ThinkPad X1 Carbon Gen 12LPDDR5x-6400 soldered (installed 7500-class, runs at 6400)
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
HP EliteBook X G1a 14 inchUp to 2 TB PCIe NVMe M.2 SSD
ThinkPad X1 Carbon Gen 12One M.2 2280 PCIe 4.0 x4 NVMe SSD, Opal 2.0, up to 2 TB. Single drive, no card reader
Display
Display size
ExpertBook B5 (B5404 / B5604)14" or 16" (B5404 / B5604)
HP EliteBook X G1a 14 inch14" 2.8K OLED touch
ThinkPad X1 Carbon Gen 1214.0″
Resolution
ExpertBook B5 (B5404 / B5604)2560 x 1600
HP EliteBook X G1a 14 inch2880×1800
ThinkPad X1 Carbon Gen 121920×1200 (WUXGA); 2880×1800 OLED option
Brightness
ExpertBook B5 (B5404 / B5604)up to 500 nits
HP EliteBook X G1a 14 inch400 nits
ThinkPad X1 Carbon Gen 12WUXGA 400-nit; 500-nit Privacy Guard option; 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
HP EliteBook X G1a 14 inchOLED touch, 100% DCI-P3, up to 120 Hz
ThinkPad X1 Carbon Gen 12WUXGA IPS anti-glare / 2.8K OLED 120 Hz touch, DisplayHDR True Black 500
Touchscreen
ExpertBook B5 (B5404 / B5604)WUXGA and touch options
HP EliteBook X G1a 14 inch2.8K OLED touch
ThinkPad X1 Carbon Gen 12WUXGA touch or non-touch; 2.8K OLED touch
Connectivity
Thunderbolt / USB4 ports
ExpertBook B5 (B5404 / B5604)2x Thunderbolt 4 (USB4)
HP EliteBook X G1a 14 inch2x USB4 Type-C 40Gbps (PD, DP 2.1) — USB4, not Thunderbolt (AMD platform)
ThinkPad X1 Carbon Gen 122× Thunderbolt 4 / USB4 40 Gbps (DisplayPort 2.1, USB PD 3.0)
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
HP EliteBook X G1a 14 inch2x USB4 Type-C 40Gbps (PD, DP 2.1), 1x USB-C 10Gbps, 1x USB-A 10Gbps (powered), HDMI 2.1, headset combo
ThinkPad X1 Carbon Gen 122× Thunderbolt 4 / USB4 40 Gbps (DisplayPort 2.1, USB PD 3.0), 2× USB-A 5 Gbps (one Always On), HDMI 2.1 (4K/60 Hz), 3.5 mm combo; nano-SIM on WWAN builds. No onboard Ethernet
Mobile broadband (4G/5G) option
ExpertBook B5 (B5404 / B5604)optional 4G LTE (selected territories)
HP EliteBook X G1a 14 inch--
ThinkPad X1 Carbon Gen 12Optional 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
HP EliteBook X G1a 14 inchFrom 1.49 kg
ThinkPad X1 Carbon Gen 12from 1.08 kg (1.09 kg with haptic touchpad)
Dimensions
ExpertBook B5 (B5404 / B5604)14": 313.7 x 226.8 x 18.9-23.0 mm (16" B5604 larger footprint)
HP EliteBook X G1a 14 inch--
ThinkPad X1 Carbon Gen 12312.8 × 214.75 × 14.96 mm
Security & management
Intel vPro
ExpertBook B5 (B5404 / B5604)Intel Core Ultra vPro options
HP EliteBook X G1a 14 inchN/A — AMD Ryzen AI platform; Intel vPro not offered (AMD PRO manageability instead)
ThinkPad X1 Carbon Gen 12vPro-capable (per Wireless spec)
Copilot+ PC (40+ TOPS NPU)
ExpertBook B5 (B5404 / B5604)--
HP EliteBook X G1a 14 inchCopilot+ PC — AMD Ryzen AI NPU up to 55 TOPS
ThinkPad X1 Carbon Gen 12AI PC — Intel AI Boost NPU up to 11 TOPS, below the 40-TOPS Copilot+ bar
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
HP EliteBook X G1a 14 inch74.5 Wh, 4-cell Li-Polymer; USB-C Power Delivery charging
ThinkPad X1 Carbon Gen 1257 Wh Li-ion, Rapid Charge to 80% in 1 hr
Rated battery life
ExpertBook B5 (B5404 / B5604)--
HP EliteBook X G1a 14 inch--
ThinkPad X1 Carbon Gen 12up to ~16 hr (MobileMark 25, WUXGA / 125U)
Support
Operating system
ExpertBook B5 (B5404 / B5604)Windows 11 Pro (Pro Education / Home options)
HP EliteBook X G1a 14 inchWindows 11 Pro
ThinkPad X1 Carbon Gen 12Windows 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
HP EliteBook X G1a 14 inchHP standard commercial warranty; HP Care Pack uplifts and Wolf Pro Security licence extensions available
ThinkPad X1 Carbon Gen 12Lenovo base warranty (cover varies by configuration); Lenovo Premier Support uplift (to 3/5-year, ADP options) quoted
★
Expert Analysis
Specs web-verified from manufacturer datasheets · Servnet-reviewed · Last reviewed 8 Sept 2026
The ASUS ExpertBook B5 OLED delivers the most versatile platform for enterprise deployments requiring dedicated graphics and internal upgradeability, whereas the HP EliteBook X G1a leads in raw battery capacity and on-device AI acceleration, and the Lenovo ThinkPad X1 Carbon Gen 12 sets the benchmark for lightweight executive mobility.
For organisations prioritising workstation-class graphics and hardware serviceability, the ExpertBook B5 offers optional NVIDIA GeForce RTX graphics, dual SO-DIMM memory slots, a native RJ45 Gigabit Ethernet port, and a smart-card reader, alongside a display reaching 500 nits. However, it is heavier than its rivals at 1.29 kg to 1.42 kg. In contrast, HP's EliteBook X G1a features a substantial 74.5 Wh battery and an AMD Ryzen AI 9 HX 375 processor delivering up to 55 TOPS of NPU performance, achieving Copilot+ PC compliance, though its high-speed LPDDR5x memory remains soldered.
Lenovo's ThinkPad X1 Carbon Gen 12 excels in portable deployments, weighing from just 1.08 kg, with optional 5G Sub-6 mobile broadband and flexible operating system support including Ubuntu and Fedora Linux alongside Windows 11 Pro, but it relies on a smaller 57 Wh battery and integrated graphics.
ExpertBook B5 (B5404 / B5604)
Best for office-based professionals requiring discrete graphics, native Ethernet, and upgradeable memory
HP EliteBook X G1a 14 inch
Best for power users demanding local Copilot+ AI acceleration and maximum battery endurance
ThinkPad X1 Carbon Gen 12
Best for mobile executives needing an ultralight chassis with optional 5G cellular connectivity
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ExpertBook B5 (B5404 / B5604)
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