Asus ExpertBook B5 B5405 vs Microsoft Surface Pro 12 Comparison

Laptop to replace

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Asus ExpertBook B5 B5405

14 inches | February 2025

Speed 6

Size 9

Display 3.5

Gaming 3.5

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Microsoft Surface Pro 12

12 inches | May 2025

Speed 4

Size 8.5

Display 6

Gaming 2

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Asus ExpertBook B5 B5405 vs Microsoft Surface Pro 12 Comparison Overview

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In this review, we will be comparing ExpertBook B5 B5405 and Surface Pro 12, two laptops from Asus and Microsoft. Asus ExpertBook B5 B5405 was introduced to market in February 2025 and Microsoft Surface Pro 12 was launched in May 2025. There is only 3 months difference between ExpertBook B5 B5405 and Surface Pro 12 so we are expecting this to be a fair comparison regarding age and technology level.

Click for Available Configurations of the Laptops

ExpertBook B5 B5405 and Surface Pro 12 are members of Microsoft's series of laptops. Below you can find the latest models from this series.

Asus Series History

	Release Date	Screen Size	Dimensions	Weight
Asus ExpertBook Ultra	January 2026	14.0"	310.9 x 212.8 x 10.9-16.4 mm	0.99 kg (2.18 lbs)
Asus Zenbook A16 UX3607	January 2026	16.0"	353.5 x 242.4 x 13.8-16.6 mm	1.2 kg (2.65 lbs)
Asus ProArt PZ14 HT7407	January 2026	14.0"	319.6 x 206.4 x 0.9 mm	0.79 kg (1.74 lbs)
Asus ROG Zephyrus G16 2026 GU606	January 2026	16.0"	354 x 246 x 14.9-16.4 mm	1.85 kg (4.08 lbs)
Asus ROG Flow Z13-KJP 2026	January 2026	13.4"	300 x 204 x 14.5-14.9 mm	1.72 kg (3.79 lbs)
Asus ROG Zephyrus Duo 16 GX651	January 2026	16.0"	355 x 246 x 19.9-24.9 mm	2.82 kg (6.22 lbs)
Asus ROG Zephyrus G14 2026 GU405	January 2026	14.0"	311 x 220 x 15.9-16.3 mm	1.5 kg (3.31 lbs)
Asus ROG Zephyrus G14 2026 GA403	January 2026	14.0"	311 x 220 x 15.9-16.3 mm	1.5 kg (3.31 lbs)

Here is a brief look at the main features of Asus ExpertBook B5 B5405 and Microsoft Surface Pro 12 before getting into our more detailed comparison.

Asus ExpertBook B5 B5405 Key Specs

Launched in February 2025
14.0" IPS LCD, 16:10 Aspect Ratio Display
CPU: Intel Core Ultra 5 225H
GPU: Intel Arc 130T
8GB Ram
315.1 x 226.8 x 18.9-19 mm (12.41 x 8.93 x 0.74-0.75 inches)
Weight: 1.35 kg (2.98 lbs)

Microsoft Surface Pro 12 Key Specs

Launched in May 2025
12.0" Touchscreen - IPS LCD, 3:2 Aspect Ratio Display
CPU: Qualcomm Snapdragon X Plus (X1P-42-100)
GPU: Adreno X1-45
16GB Ram
274 x 190 x 7.8 mm (10.79 x 7.48 x 0.31 inches)
Weight: 0.68 kg (1.5 lbs)

Let's read on the following sections in order to better understand in detail how ExpertBook B5 B5405 and Surface Pro 12 compares and decide which one is better for you.

**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Reasons to choose Asus ExpertBook B5 B5405 over Microsoft Surface Pro 12

Side Bezel Thickness	6.8 mm vs 10.2 mm	3.4 mm thinner bezels
Display Size	14 inches vs 12 inches	Larger Screen Estate
Screen Type	Matte vs Glossy	potentially less reflections on screen
CPU Fabrication Process	3 nm vs 4 nm	Newer Generation CPU
GPU FLOPS	3.9 TFLOPS vs 2.3 TFLOPS	More RAM Options
Upgradable RAM	Yes vs No	Easily increase the Storage when needed
Upgradable Storage	Yes vs No	Faster data transfers
NVMe Type SSD	Yes vs No	Support audio, data, power and video all through one single port
Thunderbolt	v4 vs No	Connect to external monitors directly via HDMI cable
HDMI Port	1x HDMI 2.1 vs No	Connects to the local network via Ethernet RJ45
Ethernet RJ45 Port	Yes vs No	Read & Write SD Cards with the built-in reader
SD Card Reader	Yes vs No	Easily see the keys under low light
Keyboard Backlight	Yes vs No

Reasons to choose Microsoft Surface Pro 12 over Asus ExpertBook B5 B5405

Weight	0.68 kg vs 1.35 kg	0.67 kg lighter
Screen-to-Body Ratio	~82.4% vs ~79.5%	Larger screen area ratio
Refresh Rate	90 Hz vs 60 Hz	Smoother media experience
Screen PPI	220 ppi vs 162 ppi	More pixels per inch
2-in-1 Design	Yes vs No	Use like a tablet
Touch Screen	Yes vs No	Interact with your fingers
Screen Resolution	2196 x 1464 pixels vs 1920 x 1200 pixels	Higher pixel count screen
Max Brightness	400 nits vs 300 nits	Brighter Screen
GPU Fabrication Process	4 nm vs 5 nm	Newer Generation GPU
Dolby Atmos Speakers	Yes vs No	3D Surround Sound Support
WiFi Standard	v7 vs v6E	More advanced Wi-fi connectivity

Common Strengths of Microsoft Surface Pro 12 and Asus ExpertBook B5 B5405

Launch Dates	February 2025 vs May 2025	Both laptops are recent models
Fast Charging Support	Yes vs Yes	Charge the battery in a shorter time
VGA Output	No vs No	Connect to External Displays via VGA cable

Common Weaknesses of Microsoft Surface Pro 12 and Asus ExpertBook B5 B5405

HDR Support	No vs No	No HDR Support

Asus ExpertBook B5 B5405 vs Microsoft Surface Pro 12: Physical Specs Comparison

In this section, we will be comparing the physical specifications and body features of the Asus ExpertBook B5 B5405 and the Microsoft Surface Pro 12.

Physical Specs
Weight	1.35 kg (2.98 lbs)	0.68 kg (1.5 lbs)
Surface Area	715 cm2 (110.8 inches2)	521 cm2 (80.7 inches2)
Screen to Surface Ratio	~79.5%	~82.4%
Side Bezel Thickness	~6.8 mm	~10.2 mm
Weight per Inch of Screen	0.10 kg/inch	0.06 kg/inch
	0.22 lbs/inch	0.132 lbs/inch
Colors	Gray	Gray, Blue, Purple
Cover Opening Angle	180°	360°

Comparison of the Asus ExpertBook B5 B5405 and the Microsoft Surface Pro 12 External Dimensions

Weight

ExpertBook B5 B5405 weighs 1.35 kg (2.98 lbs), whereas the Surface Pro 12 weighs 0.68 kg (1.5 lbs). There is a notable difference in weight between these two laptops. However, it's important to consider that comparing their weights directly may not provide a complete picture since they also have different display sizes.

Weight Comparison

Asus ExpertBook B5 B5405

Avg: 14.0-14.9"

Microsoft Surface Pro 12

Avg: 12.0-12.9"

Thickness Comparison

Asus ExpertBook B5 B5405

Avg: 14.0-14.9"

Microsoft Surface Pro 12

Avg: 12.0-12.9"

Another value that we use for comparing the weights of the laptops is the Weight per Inch of Screen, which is calculated by dividing the total weight of the model with its usable diagonal screen size. This value for the Asus ExpertBook B5 B5405 is 0.10 kg/inch.In comparison, this value for the Microsoft Surface Pro 12 is 0.06 kg/inch.Here are some of the best performing laptops in this area:

Microsoft Surface Go 4: 0.05 kg/inch
LG Gram SuperSlim 15.6 2023: 0.06 kg/inch
Asus ProArt PZ13 HT5306: 0.06 kg/inch
Asus Zenbook A14 UX3407: 0.06 kg/inch
Asus ProArt PZ14 HT7407: 0.06 kg/inch
Dell Latitude 7330: 0.07 kg/inch
Lenovo ThinkPad X1 Nano Gen 2: 0.07 kg/inch
LG Gram 14 2022: 0.07 kg/inch

Asus ExpertBook B5 B5405 vs Microsoft Surface Pro 12: Internals Comparison

CPU Comparison

CPU Model	Intel Core Ultra 5 225H Intel Core Ultra 7 255H	Qualcomm Snapdragon X Plus (X1P-42-100)
Base Frequency	1.7 GHz	3.2 GHz
Turbo Frequency	4.9 GHz	3.4 GHz
Number of Cores	14 (4P + 8E)	8
Number of Threads	14	8
L3 Cache	18 MB
Integrated GPU	Arc Graphics 130T	Qualcomm Adreno X1-45
CPU Fabrication Process	3 nm	4 nm

Above you can see the CPU options and the CineBench and GeekBench test scores for both laptops, which gives an idea about what kind of performance difference you may experience between the Asus ExpertBook B5 B5405 and Microsoft Surface Pro 12.

You may also read reviews of latest laptops with the same CPUs and compare them:

Laptops with: Intel Core Ultra 5 225H

Laptops with: Qualcomm Snapdragon X Plus (X1P-42-100)

GPU Comparison

GPU Model	Arc Graphics 130T	Adreno X1-45
Base Clock Frequency	300 MHz	280 MHz
Boost CLock Frequency	2200 MHz	1107 MHz
TGP (Total Graphics Power)	35 W	30 W
Type	Integrated	Integrated
FLOPS	3.9 TFLOPS	2.3 TFLOPS
Memory Size	System Shared	System Shared
Memory Type	DDR5	LPDDR5X
Memory Speed	6.4 Gbps	8.45 Gbps
Shading Units Cores	896	1024
TMUs	56	48
ROPs	28	24

GPU is as critical as the CPU for graphic heavy applications and the table above gives a picture of how the two GPU compares. FLOPS is a measure of a GPU's performance based on the number of floating-point arithmetic calculations that the processor can perform within a second. Asus ExpertBook B5 B5405 has a FLOPS value of 3.9 TFLOPS whereas the Microsoft Surface Pro 12 ' has a FLOPS value of 2.3 TFLOPS. If graphical performance of the laptop is important for your use type, the Asus ExpertBook B5 B5405 may be the better choice between these two setups.

RAM Comparison

RAM	8GB 16GB 32GB 64GB	16GB
Memory Bus	1x8 GB	2x8 GB
RAM Clock	6400 MHz	8448 MHz
RAM Type	DDR5	LPDDR5X
Upgradable	Yes	No
Max RAM Size	64 GB
Total Slots	2

The Surface Pro 12 provides a larger RAM capacity of 16 GB, which allows for smoother multitasking and improved performance in memory-demanding tasks compared to the ExpertBook B5 B5405's RAM capacity of 8 GB.

LOCAL LLM Compatibility Evaluation

This quick guide shows what types of large language models (LLMs) each of these laptops could support, based on their respective hardware specifications. It's meant to help you compare their suitability for running AI models locally.

LLM Category	Asus ExpertBook B5 (B5405)	Microsoft Surface Pro 12
CPU	Intel Core Ultra 5 225H (NPU - 13 TOPS)	Qualcomm Snapdragon X Plus (X1P-42-100) (NPU - data limited)
GPU	Arc Graphics 130T	Qualcomm Adreno X1-45
Memory	8 GB	16 GB
Available for LLM total	~3.5 GB (3.5 GB RAM)	~10.5 GB (10.5 GB RAM)
Small Models (1-3B): Examples: Phi-2, Qwen-1.8B Requires ~2 GB memory	✔ Modest Speed fits in your 3.5 GB RAM	✔ Modest Speed fits in your 10.5 GB RAM
Medium Models (7-8B): Examples: Mistral-7B, Qwen-7B Requires ~5 GB memory	✖ Not Supported exceeds available RAM	✔ Modest Speed fits in your 10.5 GB RAM
Large Models
13-15B Models (e.g., Llama 3 14B, Qwen1.5 14B) Requires ~9 GB memory	✖ Not Supported exceeds available RAM	⚠ Borderline / Slow fits in your 10.5 GB RAM
16-24B Models (e.g., Dense 20B Q4 ~15.5GB) Requires ~14 GB memory	✖ Not Supported exceeds available RAM	✖ Not Supported exceeds available RAM
24-30B Models (e.g., Dense 30B Q4) Requires ~18 GB memory	✖ Not Supported exceeds available RAM	✖ Not Supported exceeds available RAM
MoE Models (Mixture-of-Experts) (e.g., Mixtral 8x7B - total ~47B, active ~12-13B) Requires ~24 GB memory	✖ Not Supported exceeds available RAM	✖ Not Supported exceeds available RAM
Extra-Large Models (65B+): Examples: LLaMA2-70B, Qwen1.5-72B Requires ~42 GB memory	✖ Not Supported exceeds available RAM	✖ Not Supported exceeds available RAM

For more detailed LLM evaluation (subcategories, performance ranges, memory breakdown)

Asus ExpertBook B5 (B5405)|Microsoft Surface Pro 12

Note: Optimized (e.g., 4-bit) models may run on limited hardware. Performance depends on runtime and setup.

📌 Model Types: Dense 30B Q4 models typically require around 19–22 GB of total VRAM, so they run best on systems with ≥24 GB VRAM. MoE models like Mixtral 8x7B (≈47B total parameters, usually ≈23–26 GB in 4-bit) also need high memory because all experts must be loaded, even though only a few are active per token. They reduce compute cost per token (similar to a ~12–13B dense model), but not memory usage, so they are not practical on 14–16 GB systems.

🚀 Modern NPU (Neural Processing Unit): Modern processors like AMD Ryzen AI and Intel Core Ultra feature NPU and unified memory architecture. NPUs provide modest performance gains (0-30% faster) with better power efficiency compared to iGPU-only execution. Real-world tests show ~3-10 tok/s range on 13B models with 32GB RAM (varies by runtime, quantization, and context), comparable to iGPU but more power-efficient. Note: These figures are examples from various NPU systems; actual performance depends on your specific hardware configuration.

Understanding Performance Categories

The performance descriptions use general categories because actual speed varies greatly based on your specific hardware, model optimization, context length, and runtime software.

Performance Level	Typical Range	User Experience
Runs Smoothly (High-end dGPU)	50+ tok/s	Real-time response. Feels instant, like ChatGPT.
Runs Well (Mid-range dGPU)	20-50 tok/s	Good interactive performance. Slight delay, but usable.
Modest Speed (iGPU/NPU/CPU)	5-20 tok/s	Usable for tasks that don't need instant responses. Noticeable typing delay.
Borderline / Slow (Limited hardware)	2-5 tok/s	Slow-Very slow. Patience required. Better for batch processing.
Not Practical	<2 tok/s	Too slow for regular use. May cause system hangs or instability.

💡 Tip: Your actual results may be higher or lower than these ranges. Test with your specific hardware to know for sure!

⚠️ Note: Performance categorization is based on VRAM capacity and RAM fallback status. GPU type (memory bandwidth, compute power) can also affect actual performance. Currently, we prioritize whether the model fits in VRAM or requires RAM fallback for classification. We may refine this categorization in future updates based on more detailed benchmarks.

BATTERY

BATTERY	50 Wh 63 Wh	38 Wh
Battery Type	Li-Po	Li-Po
Replaceable	No	No
Fast Charging	Yes	No
Charging Port Position	Left	Right
Charge Power	65 W	45 W

Moreover, the ExpertBook B5 B5405 boasts a larger battery capacity of 50 Wh, offering extended usage time compared to the Surface Pro 12's38 Wh.

Battery Comparison

Asus ExpertBook B5 B5405

Avg: 14.0-14.9"

Microsoft Surface Pro 12

Avg: 12.0-12.9"

STORAGE
With a larger storage capacity up to 2 TB, the ExpertBook B5 B5405 provides more space for storing files and applications compared to the Surface Pro 12's max. storage capacity of 512 GB.

Storage Options	512 GB, 1 TB, 2 TB	256 GB, 512 GB
Upgradable	Yes	No
Storage type	SSD (M2)	SSD (M2)
NVMe	Yes	No
Memory Bus	PCI-E Gen 4.0 (4x)	Custom

If your budget allows, we recommend opting for the largest possible disk size, considering the potential increase in storage capacity needs in the future. However, please keep in mind the question 'What will the laptop be used for?' when making this decision. Of course, you can later upgrade the hard disk capacity by getting a larger disk. However, if your laptop has only one disk slot, it may not be as straightforward as a RAM upgrade, where you simply add or replace a module, as moving or cloning files to a new disk may be necessary.

Asus ExpertBook B5 B5405 vs Microsoft Surface Pro 12: Display Comparison

The display is an essential aspect to consider when comparing the Asus ExpertBook B5 B5405 and Microsoft Surface Pro 12 since its is the component that you interact the most and significantly impact the experience.

Screen Area and Dimensions

Now let's look at the comparison of the actual display areas of both laptops below, keeping the bezels around the screens out of the equation. ExpertBook B5 B5405 has a display size of 14.0".On the other hand, Surface Pro 12 has a smaller 12.0" display.The total usable screen area of the ExpertBook B5 B5405 is 568cm² / 88inch² whereas the Surface Pro 12's total usable screen area is 429cm² / 66inch².

PPI (Pixels per Inch)
Additionally, the Surface Pro 12 features a higher pixel density with 220 pixels per inch (PPI), ensuring sharper image details.

Screen PPI (Pixels Per Inch) Comparison

Asus ExpertBook B5 B5405

Avg: 14.0-14.9"

Microsoft Surface Pro 12

Avg: 12.0-12.9"

Refresh Rate
The Surface Pro 12 offers a higher refresh rate of 90 Hz, resulting in smoother motion and improved visual experience.

Brightness
The Surface Pro 12 offers a higher maximum brightness of 400 nits, delivering a brighter screen.

Brightness Comparison

Asus ExpertBook B5 B5405

Avg: 14.0-14.9"

Microsoft Surface Pro 12

Avg: 12.0-12.9"

Asus ExpertBook B5 B5405 vs Microsoft Surface Pro 12 Connectivity Comparison

In terms of connectivity,

Wifi
Surface Pro 12 features a more advanced Wi-Fi standard v7, providing faster and more reliable wireless connections compared to ExpertBook B5 B5405 (v6E).

Below, you'll find a Wi-Fi Versions Table, along with their release dates and speeds, to provide a brief overview of its development.

Wi-Fi Versions and Speeds

Standard	Speed	Release Date	Network	Frequency Bands (GHz)
Wi-Fi 7	up to 40 Gbps (5 GB/s)	2023	802.11be	2.4, 5, 6
Wi-Fi 6E	up to 9.6 Gbps (1.2 GB/s)	2020	802.11ax	2.4, 5, 6
Wi-Fi 6	up to 9.6 Gbps (1.2 GB/s)	2019	802.11ax	2.4, 5
Wi-Fi 5	up to 6.93 Gbps (866.25 MB/s)	2014	802.11ac	2.4, 5
Wi-Fi 4	up to 600 Mbps (75 MB/s)	2009	802.11n	2.4, 5

* Please note that the provided transfer rates are maximum theoretical values, and real-life performance may vary based on environmental factors.

USB
ExpertBook B5 B5405 is equipped with 2x USB 3.2 USB-A ports. Surface Pro 12 does not have USB-A ports.
Both ExpertBook B5 B5405 and Surface Pro 12 feature 2x USB 4.0 USB Type-C ports.

Below, you'll find a table of USB ports, along with their release dates and speeds.
To mitigate the confusion caused by generation names, the USB Implementers Forum (USB-IF) suggests using marketing names like USB 5Gbps, USB 10Gbps, and so forth, based on their respective transfer rates.

USB Type and Speeds

USB Type	Version	Speed	Date	Other Features/Explanations
USB4	Gen 4 (2.0)	80 Gbps	2022	Also known as USB 80Gbps
USB4	Gen 3×2	40 Gbps	2019	Also known as USB 40Gbps
USB 3.2	3.2 Gen 2x2	20 Gbps	2019	Double the data transfer rates of Gen 2
USB 3.2	3.2 Gen 2	10 Gbps	2017	Previously known as USB 3.1
USB 3.2	3.2 Gen 1	5 Gbps	2017	Previously known as USB 3.0
USB 3.1	3.1 Gen 2	10 Gbps	2013	Faster data transfer rates
USB 3.0	3.1 Gen 1	5 Gbps	2010	SuperSpeed USB, improved data transfer rates
USB 2.0	2.0	480 Mbps	2000	High-speed data transfer
USB 1.0	1.0	1.5 Mbps	1996	Original USB standard

Thunderbolt
ExpertBook B5 B5405 is equipped with Thunderbolt 4 port. Surface Pro 12 does not have Thunderbolt port.

HDMI
ExpertBook B5 B5405 features an HDMI port (1x HDMI 2.1) for connecting to external monitors. Surface Pro 12 does not have an HDMI port.

Below, you'll find a comparison table detailing different HDMI versions, including their bandwidth, color depth, maximum resolution, and release dates. This information can be helpful in understanding the capabilities of each HDMI version and choosing the most suitable one for your needs.

HDMI Comparison Table

HDMI Version	Maximum Resolution	Bandwidth (Gbps)	Color Depth (bits)	Release Date
HDMI 2.1-2.1b	7680 x 4320 *(8K)* @ 60p 3840 x 2160 *(4K)* @ 120p	48.0	48	2017
HDMI 2.0-2.0b	3840 x 2160 *(4K)* @ 60p	18.0	48	2013
HDMI 1.4-1.4b	3840 x 2160 *(4K)* @ 30p	10.2	48	2009
HDMI 1.3-1.3a	2560 x 1440 @ 60p	10.2	48	2006
HDMI 1.0-1.2a	1920 x 1200 @ 60p	4.95	24	2002

* Please note that the provided resolution values represent the maximum supported resolution, and actual display quality may depend on other factors such as source content and connected devices.

SD Card Reader
ExpertBook B5 B5405 is equipped with an SD Card Reader for easy access to memory cards. Surface Pro 12 does not have an SD Card Reader.

Audio Jack
ExpertBook B5 B5405 is equipped with a 3.5mm Audio Jack, allowing seamless connection to headphones and speakers. Surface Pro 12 does not have a 3.5mm Audio Jack.

To summarize the connectivity and ports details, please refer to the table below to see them listed.

Connectivity and Ports
WiFi Standard (latest: v7)	v6E	v7
Bluetooth (latest: v6.2)	v5.4	v5.4
USB-A (latest: 3.2)	2x USB 3.2	No
USB Type-C (latest: USB4 2.0)	2x USB 4.0	2x USB 4.0
Thunderbolt (latest: 5)	Thunderbolt 4	No
HDMI (latest: 2.1)	1x HDMI 2.1	No
Display Port (latest: v2.0)	No	No
VGA	No	No
Fingerprint Sensor	Optional	No
Optical Drive	No	No
Audio Jack 3.5mm	Yes	No
Ethernet RJ45	Yes	No
SD CardReader	Yes	No
Proprietary Charging Port	No	No