Microsoft Surface Book 3 15 vs HP EliteBook 645 G11 Comparison

Laptop to replace

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Microsoft Surface Book 3 15

15 inches | May 2020

Speed 3

Size 8

Display 6.5

Gaming 2

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HP EliteBook 645 G11

14 inches | September 2025

Speed 4

Size 9

Display 3.5

Gaming 2

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Microsoft Surface Book 3 15 vs HP EliteBook 645 G11 Comparison Overview

Microsoft Surface Bo...

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HP EliteBook 645 G11

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Microsoft Surface Bo...

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HP EliteBook 645 G11

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In this review, we will be comparing Surface Book 3 15 and EliteBook 645 G11, two laptops from Microsoft and HP. Microsoft Surface Book 3 15 was introduced to market in May 2020 and HP EliteBook 645 G11 was launched in September 2025. As you can see, Surface Book 3 15 is 5 years older than EliteBook 645 G11. Let's see if this age difference between two laptops makes a big difference.

Click for Available Configurations of the Laptops

Here is a brief look at the main features of Microsoft Surface Book 3 15 and HP EliteBook 645 G11 before getting into our more detailed comparison.

Microsoft Surface Book 3 15 Key Specs

Launched in May 2020
15.0" TouchScreen - IPS LCD, 3:2 Aspect Ratio Display
CPU: Intel Core i7 1065G7
GPU: GeForce GTX 1660 TI Max-Q
8GB Ram
343 x 251 x 15-23 mm (13.5 x 9.88 x 0.59-0.91 inches)
Weight: 1.9 kg (4.19 lbs)

HP EliteBook 645 G11 Key Specs

Launched in September 2025
14.0" IPS LCD, 16:10 Aspect Ratio Display
CPU: AMD Ryzen 5 7535U
GPU: Radeon 660M
8GB Ram
318.6 x 224.4 x 10.9-17 mm (12.54 x 8.83 x 0.43-0.67 inches)
Weight: 1.39 kg (3.06 lbs)

Let's read on the following sections in order to better understand in detail how Surface Book 3 15 and EliteBook 645 G11 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 Microsoft Surface Book 3 15 over HP EliteBook 645 G11

Display Size	15 inches vs 14 inches	Larger Screen Estate
Screen PPI	260 ppi vs 162 ppi	More pixels per inch
Touch Screen	Yes vs No	Interact with your fingers
Screen Resolution	3240 x 2160 pixels vs 1920 x 1200 pixels	Higher pixel count screen
Max Brightness	400 nits vs 300 nits	Brighter Screen
GPU FLOPS	4.101 TFLOPS vs 1.5 TFLOPS	Dedicated GPU unit
GPU Type	Dedicated vs Integrated	3D Surround Sound Support
Dolby Atmos Speakers	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	Better typing feel
Key Travel	1.55 mm vs 1.5 mm

Reasons to choose HP EliteBook 645 G11 over Microsoft Surface Book 3 15

Weight	1.39 kg vs 1.90 kg	0.51 kg lighter
Screen-to-Body Ratio	~79.5% vs ~77.8%	Larger screen area ratio
Side Bezel Thickness	8.6 mm vs 13 mm	4.4 mm thinner bezels
Screen Type	Matte vs Glossy	potentially less reflections on screen
CPU Fabrication Process	6 nm vs 10 nm	Newer Generation CPU
GPU Fabrication Process	6 nm vs 12 nm	Newer Generation GPU
RAM Type	DDR5 vs LPDDR4X	Faster RAM Type
Upgradable RAM	Yes vs No	More RAM Options
RAM BUS	PCI-E Gen 4.0 (4x) vs PCI-E Gen 3.0 (4x)	Faster RAM
Upgradable Storage	Yes vs No	Easily increase the Storage when needed
Bluetooth	v5.3 vs v5	More advanced Bluetooth connectivity
Webcam Resolution	2592 x 1944 vs 1280 x 720	Higher Resolution Camera
USB-A Port Type	3.2 vs 3.1	Faster USB-A
Number of USB-C Ports	2x USB 4.0 vs 1x USB 3.1	Connect more device at the same time
USB-C Port Type	v4.0 vs v3.1	Faster USB-C connection
HDMI Port	1x HDMI 2.1 vs No	Connect to external monitors directly via HDMI cable
Ethernet RJ45 Port	Yes vs No	Connects to the local network via Ethernet RJ45

Common Strengths of HP EliteBook 645 G11 and Microsoft Surface Book 3 15

Fast Charging Support	Yes vs Yes	Charge the battery in a shorter time
RAM Type	LPDDR4X vs DDR5	Fast RAM type
SSD Type	NVMe vs NVMe	Faster Data Transfers
Wi-Fi Standard	v6 vs v6E	Fast and Reliable Wi-Fi Connections
VGA Output	No vs No	Connect to External Displays via VGA cable

Common Weaknesses of HP EliteBook 645 G11 and Microsoft Surface Book 3 15

HDR Support	No vs No	No HDR Support

Microsoft Surface Book 3 15 vs HP EliteBook 645 G11: Physical Specs Comparison

In this section, we will be comparing the physical specifications and body features of the Microsoft Surface Book 3 15 and the HP EliteBook 645 G11.

Physical Specs
Weight	1.9 kg (4.19 lbs)	1.39 kg (3.06 lbs)
Surface Area	861 cm2 (133.4 inches2)	715 cm2 (110.7 inches2)
Screen to Surface Ratio	~77.8%	~79.5%
Side Bezel Thickness	~13 mm	~8.6 mm
Weight per Inch of Screen	0.13 kg/inch	0.10 kg/inch
	0.286 lbs/inch	0.22 lbs/inch
Colors	Silver	Silver

Comparison of the Microsoft Surface Book 3 15 and the HP EliteBook 645 G11 External Dimensions

Weight

Surface Book 3 15 weighs 1.9 kg (4.19 lbs), whereas the EliteBook 645 G11 weighs 1.39 kg (3.06 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

Microsoft Surface Book 3 15

Avg: 15.0-15.9"

HP EliteBook 645 G11

Avg: 14.0-14.9"

Thickness Comparison

Microsoft Surface Book 3 15

Avg: 15.0-15.9"

HP EliteBook 645 G11

Avg: 14.0-14.9"

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 Microsoft Surface Book 3 15 is 0.13 kg/inch.In comparison, this value for the HP EliteBook 645 G11 is 0.10 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
Microsoft Surface Pro 12: 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

Microsoft Surface Book 3 15 vs HP EliteBook 645 G11: Internals Comparison

CPU Comparison

CPU Model	Intel Core i7 1065G7	AMD Ryzen 5 7535U AMD Ryzen 7 7735U
Base Frequency	1.3 GHz	2.9 GHz
Turbo Frequency	3.9 GHz	4.55 GHz
Number of Cores	4	6
Number of Threads	8	12
L3 Cache	8 MB	16 MB
Integrated GPU	Intel Iris Plus Graphics G7	Radeon 660M
CPU Fabrication Process	10 nm	6 nm
Geekbench 5 (Single)	1172	1481
Geekbench 5 (Multi)	3968	7618
Cinebench 23 (Single)	1156	1508
Cinebench 23 (Multi)	4496	9782

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 Microsoft Surface Book 3 15 and HP EliteBook 645 G11.

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

Laptops with: Intel Core i7 1065G7

Laptops with: AMD Ryzen 5 7535U

GPU Comparison

GPU Model	GeForce GTX 1660 TI Max-Q	Radeon 660M
Base Clock Frequency	1140 MHz	400 MHz
Boost CLock Frequency	1335 MHz	1900 MHz
TGP (Total Graphics Power)		15 W
Type	Dedicated	Integrated
FLOPS	4.101 TFLOPS	1.5 TFLOPS
Memory Size	6 GB	System Shared
Memory Type	GDDR6	DDR5
Memory Bus	192 bit	System Shared
Memory Speed	~12 Gbps	4.8 Gbps
Shading Units Cores	1536	384
TMUs	96	24
ROPs	48	16

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. Microsoft Surface Book 3 15 has a FLOPS value of 4.101 TFLOPS whereas the HP EliteBook 645 G11 ' has a FLOPS value of 1.5 TFLOPS. If graphical performance of the laptop is important for your use type, the Microsoft Surface Book 3 15 may be the better choice between these two setups.

RAM Comparison

RAM	8GB 16GB 32GB	8GB 16GB 32GB 64GB
Memory Bus	2x4 GB	1x8 GB
RAM Clock	3733 MHz	4800 MHz
RAM Type	LPDDR4X	DDR5
Upgradable	No	Yes
Total Slots	2	2

Both laptops, the Surface Book 3 15 and the EliteBook 645 G11, come with similar RAM capacities of 8 GB, providing comparable performance in memory-intensive tasks.

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	Microsoft Surface Book 3 15	HP EliteBook 645 G11
CPU	Intel Core i7 1065G7	AMD Ryzen 5 7535U
GPU	GeForce GTX 1660 TI Max-Q	Radeon 660M
Memory	8 GB ; 6 GB VRAM	8 GB
Available for LLM total	~10 GB (4.5 GB VRAM 5.5 GB RAM)	~3.5 GB (3.5 GB RAM)
Small Models (1-3B): Examples: Phi-2, Qwen-1.8B Requires ~2 GB memory	✔ Runs Well fits in your 6 GB VRAM	✔ Modest Speed fits in your 3.5 GB RAM
Medium Models (7-8B): Examples: Mistral-7B, Qwen-7B Requires ~5 GB memory	⚠ Borderline / Slow doesn't fit in 6 GB VRAM, spills to RAM (VRAM + RAM, slower)	✖ Not Supported exceeds available RAM
Large Models
13-15B Models (e.g., Llama 3 14B, Qwen1.5 14B) Requires ~9 GB memory	! Not Practical doesn't fit in 6 GB VRAM, spills to RAM (VRAM + RAM, slower)	✖ Not Supported exceeds available 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)

Microsoft Surface Book 3 15|HP EliteBook 645 G11

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	82 Wh	56 Wh
Battery Type	Li-Po	Li-Po
Replaceable	No	No
Fast Charging	No	Yes
USB Power Delivery	Yes
Charging Port Position	Left	Left
Charge Power	127 W	65 W
AC Adapter Weight	452 gramm

Moreover, the Surface Book 3 15 boasts a larger battery capacity of 82 Wh, offering extended usage time compared to the EliteBook 645 G11's56 Wh.

Battery Comparison

Microsoft Surface Book 3 15

Avg: 15.0-15.9"

HP EliteBook 645 G11

Avg: 14.0-14.9"

STORAGE
The EliteBook 645 G11 offers a larger max storage capacity of 2 TB, providing more room for storing files and data compared to the Surface Book 3 15's storage capacity of 1 TB.

Storage Options	256 GB, 512 GB, 1 TB	256 GB, 512 GB, 1 TB, 2 TB
Upgradable	No	Yes
Total Slots	1	1
Storage type	SSD (M2)	SSD (M2)
NVMe	Yes	Yes
Memory Bus	PCI-E Gen 3.0 (4x)	PCI-E Gen 4.0 (4x)

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.

Microsoft Surface Book 3 15 vs HP EliteBook 645 G11: Display Comparison

The display is an essential aspect to consider when comparing the Microsoft Surface Book 3 15 and HP EliteBook 645 G11 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. Surface Book 3 15 has a display size of 15.0".On the other hand, EliteBook 645 G11 has a smaller 14.0" display.The total usable screen area of the Surface Book 3 15 is 670cm² / 104inch² whereas the EliteBook 645 G11's total usable screen area is 568cm² / 88inch².

PPI (Pixels per Inch)
Additionally, the Surface Book 3 15 features a higher pixel density with 260 pixels per inch (PPI), ensuring sharper image details.

Screen PPI (Pixels Per Inch) Comparison

Microsoft Surface Book 3 15

Avg: 15.0-15.9"

HP EliteBook 645 G11

Avg: 14.0-14.9"

Refresh Rate
Both Surface Book 3 15 and EliteBook 645 G11 offer the same refresh rate of 60 Hz.

Brightness
The Surface Book 3 15 offers a higher maximum brightness of 400 nits, delivering a brighter screen.

Brightness Comparison

Microsoft Surface Book 3 15

Avg: 15.0-15.9"

HP EliteBook 645 G11

Avg: 14.0-14.9"

Microsoft Surface Book 3 15 vs HP EliteBook 645 G11 Connectivity Comparison

In terms of connectivity,

Wifi
EliteBook 645 G11 features a more advanced Wi-Fi standard v6E, providing faster and more reliable wireless connections compared to Surface Book 3 15 (v6).

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
Both Surface Book 3 15 and EliteBook 645 G11 have USB-A ports. Surface Book 3 15 has 2x USB 3.1 USB-A ports, while EliteBook 645 G11 has 2x USB 3.2 USB-A ports.
Both Surface Book 3 15 and EliteBook 645 G11 have USB Type-C ports. Surface Book 3 15 has 1x USB 3.1 USB Type-C ports, while EliteBook 645 G11 has 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
Neither Surface Book 3 15 nor EliteBook 645 G11 has Thunderbolt port.

HDMI
EliteBook 645 G11 features an HDMI port (1x HDMI 2.1) for connecting to external monitors. Surface Book 3 15 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
Surface Book 3 15 is equipped with an SD Card Reader for easy access to memory cards. EliteBook 645 G11 does not have an SD Card Reader.

Audio Jack
Both Surface Book 3 15 and EliteBook 645 G11 are equipped with a 3.5mm Audio Jack, providing seamless connection to headphones and speakers.

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

Connectivity and Ports
WiFi Standard (latest: v7)	v6	v6E
Bluetooth (latest: v6.2)	v5	v5.3
USB-A (latest: 3.2)	2x USB 3.1	2x USB 3.2
USB Type-C (latest: USB4 2.0)	1x USB 3.1	2x USB 4.0
Thunderbolt (latest: 5)	No	No
HDMI (latest: 2.1)	No	1x HDMI 2.1
Display Port (latest: v2.0)	No	No
VGA	No	No
Fingerprint Sensor	Yes	Optional
Optical Drive	No	No
Audio Jack 3.5mm	Yes	Yes
Ethernet RJ45	No	Yes
SD CardReader	Yes	No
Proprietary Charging Port	No	No