Dell Inspiron 16 5645 vs Dell Inspiron 15 3511 Comparison

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Dell Inspiron 16 5645

16 inches | April 2024

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Dell Inspiron 15 3511

15.6 inches | January 2021

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Dell Inspiron 16 5645 vs Dell Inspiron 15 3511 Comparison Overview

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Dell Inspiron 15 351...

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In this review, we will be comparing Inspiron 16 5645 and Inspiron 15 3511, two laptops by Dell. Dell Inspiron 16 5645 was introduced to market in April 2024 and Dell Inspiron 15 3511 was launched in January 2021. As you can see, Inspiron 15 3511 is 3 years older than Inspiron 16 5645. Let's see if this age difference between two laptops makes a big difference.

Click for Available Configurations of the Laptops

Inspiron 16 5645 and Inspiron 15 3511 are members of Dell's Inspiron series of laptops. Below you can find the latest models from this series.

Dell Inspiron Series History

	Release Date	Screen Size	Dimensions	Weight
Dell Inspiron 14 Plus 7441	May 2024	14.0"	314 x 223.75 x 16.9 mm	1.4 kg (3.09 lbs)
Dell Inspiron 14 5445	April 2024	14.0"	314 x 226.15 x 15.86-17.31 mm	1.56 kg (3.44 lbs)
Dell Inspiron 16 5645	April 2024	16.0"	356.78 x 249.52 x 16.18-19.05 mm	1.87 kg (4.12 lbs)
Dell Inspiron 16 5640	April 2024	16.0"	356.78 x 249.52 x 16.1-19.05 mm	1.87 kg (4.12 lbs)
Dell Inspiron 14 Plus 7440	February 2024	14.0"	314 x 226.56 x 15.99-18.99 mm	1.6 kg (3.53 lbs)
Dell Inspiron 13 5330	January 2024	13.3"	296.68 x 213.5 x 14.35-15.65 mm	1.26 kg (2.78 lbs)
Dell Inspiron 15 3530	May 2023	15.6"	358.5 x 234.9 x 16.96-19.99 mm	1.66 kg (3.66 lbs)
Dell Inspiron 14 7430	March 2023	14.0"	314 x 226.56 x 15.54-18.55 mm	1.58 kg (3.48 lbs)

Here is a brief look at the main features of Dell Inspiron 16 5645 and Dell Inspiron 15 3511 before getting into our more detailed comparison.

Dell Inspiron 16 5645 Key Specs

Launched in April 2024
16.0" IPS LCD, 16:10 Aspect Ratio Display
CPU: AMD Ryzen 5 8540U
GPU: Radeon 740M
8GB Ram
356.78 x 249.52 x 16.18-19.05 mm (14.05 x 9.82 x 0.64-0.75 inches)
Weight: 1.87 kg (4.12 lbs)

Dell Inspiron 15 3511 Key Specs

Launched in January 2021
15.6" TN LCD, 16:9 Aspect Ratio Display
CPU: Intel Pentium Gold 7505
GPU: Intel UHD Graphics Xe G4
4GB Ram
358.5 x 235.56 x 17.5-18.99 mm (14.11 x 9.27 x 0.69-0.75 inches)
Weight: 1.73 kg (3.81 lbs)

Let's read on the following sections in order to better understand in detail how Inspiron 16 5645 and Inspiron 15 3511 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 Dell Inspiron 16 5645 over Dell Inspiron 15 3511

Screen-to-Body Ratio	~83.4% vs ~79.5%	Larger screen area ratio
Side Bezel Thickness	6.1 mm vs 6.6 mm	0.5 mm thinner bezels
Display Size	16 inches vs 15.6 inches	Larger Screen Estate
Contrast Rate	1200:1 vs 400:1	more pleasing colors
Screen PPI	142 ppi vs 100 ppi	More pixels per inch
Screen Resolution	1920 x 1200 pixels vs 1366 x 768 pixels	Higher pixel count screen
Max Brightness	300 nits vs 220 nits	Brighter Screen
CPU Fabrication Process	4 nm vs 10 nm	Newer Generation CPU
GPU Fabrication Process	4 nm vs 10 nm	Newer Generation GPU
GPU FLOPS	2.56 TFLOPS vs 0.84 TFLOPS	Charges via USB-C type cable
USB Power Delivery	Yes vs No	Faster RAM Type
RAM Type	DDR5 vs DDR4	Higher RAM potential
Max Total RAM	32 GB vs 16 GB	Faster RAM
RAM BUS	PCI-E Gen 4.0 (4x) vs PCI-E Gen 3.0 (4x)	3D Surround Sound Support
Dolby Atmos Speakers	Yes vs No	Better Sound capture
Number of Microphones	2 vs 1	More advanced Bluetooth connectivity
Bluetooth	v5.3 vs v5.1	Higher Resolution Camera
Webcam Resolution	1920 x 1080 vs 1280 x 720

Reasons to choose Dell Inspiron 15 3511 over Dell Inspiron 16 5645

Weight	1.73 kg vs 1.87 kg	0.14 kg lighter
Response Time	25 ms vs 35 ms	Faster Response screen
Number of USB-A Ports	3x USB 3.2 vs 2x USB 3.2	Connect more device at the same time

Common Strengths of Dell Inspiron 15 3511 and Dell Inspiron 16 5645

Screen Coating	Matte vs Matte	Less reflections on the screen
Fast Charging Support	Yes vs Yes	Charge the battery in a shorter time
Upgradable RAM	Yes vs Yes	Option to increase the RAM size
RAM Type	PCI-E Gen 4.0 (4x) vs PCI-E Gen 3.0 (4x)	Fast RAM type
Upgradable Storage	Yes vs Yes	Option to increase the Storage size
SSD Type	NVMe vs NVMe	Faster Data Transfers
Wi-Fi Standard	v6E vs v6	Fast and Reliable Wi-Fi Connections
HDMI Output	1x HDMI 1.4 vs 1x HDMI 1.4	Connect to External Displays via HDMI cable
VGA Output	No vs No	Connect to External Displays via VGA cable
Built-in SD Card Reader	Yes vs Yes	Read & Write SD Cards
Numeric Pad	Yes vs Yes	Fast way to input numbers
Keyboard Backlight	Yes vs Yes	Easily see the keys under low light

Common Weaknesses of Dell Inspiron 15 3511 and Dell Inspiron 16 5645

Touchscreen Capability	No vs No	No Touchscreen Capability
HDR Support	No vs No	No HDR Support

Dell Inspiron 16 5645 vs Dell Inspiron 15 3511: Physical Specs Comparison

In this section, we will be comparing the physical specifications and body features of the Dell Inspiron 16 5645 and the Dell Inspiron 15 3511.

Physical Specs
Weight	1.87 kg (4.12 lbs)	1.73 kg (3.81 lbs)
Surface Area	890 cm2 (138 inches2)	844 cm2 (130.8 inches2)
Screen to Surface Ratio	~83.4%	~79.5%
Side Bezel Thickness	~6.1 mm	~6.6 mm
Weight per Inch of Screen	0.12 kg/inch	0.11 kg/inch
	0.264 lbs/inch	0.242 lbs/inch
Colors	Blue	Black, Silver

Comparison of the Dell Inspiron 16 5645 and the Dell Inspiron 15 3511 External Dimensions

Weight

Inspiron 16 5645 weighs 1.87 kg (4.12 lbs), whereas the Inspiron 15 3511 weighs 1.73 kg (3.81 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

Dell Inspiron 16 5645 1.87 kg

Avg: 16.0-16.9" 2.07 kg

Dell Inspiron 15 3511 1.73 kg

Avg: 15.0-15.9" 1.95 kg

Thickness Comparison

Dell Inspiron 16 5645 19.05 mm

Avg: 16.0-16.9" 20.35 mm

Dell Inspiron 15 3511 17.50 mm

Avg: 15.0-15.9" 20.17 mm

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 Dell Inspiron 16 5645 is 0.12 kg/inch.In comparison, this value for the Dell Inspiron 15 3511 is 0.11 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
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
LG Gram 14 2-in-1 2022: 0.07 kg/inch

Dell Inspiron 16 5645 vs Dell Inspiron 15 3511: Internals (CPU, GPU, RAM, Battery, SSD, etc.) Comparison

CPU Comparison

CPU Model	AMD Ryzen 5 8540U AMD Ryzen 7 8840U	Intel Pentium Gold 7505 Intel Core i3 1115G4 Intel Core i3 1125G4 Intel Core i5 1135G7 Intel Core i7 1165G7
Base Frequency	3.2 GHz	2.0 GHz
Turbo Frequency	4.9 GHz	3.5 GHz
Number of Cores	6	2
Number of Threads	12	4
L3 Cache	16 MB	4 MB
Integrated GPU	Radeon 740M	Intel UHD Graphics Xe G4 48 EUs
CPU Fabrication Process	4 nm	10 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 Dell Inspiron 16 5645 and Dell Inspiron 15 3511.

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

Laptops with: AMD Ryzen 5 8540U

Laptops with: Intel Pentium Gold 7505

GPU Comparison

GPU Model	Radeon 740M	Intel UHD Graphics Xe G4
Base Clock Frequency	800 MHz	300 MHz
Boost CLock Frequency	2500 MHz	1100 MHz
TGP (Total Graphics Power)	15 W	15 W
Type	Integrated	Integrated
FLOPS	2.56 TFLOPS	844.8 GFLOPS
Memory Size	System Shared	System Shared
Memory Type	DDR5	System Shared
Memory Speed	5.6 Gbps	System Shared
Shading Units Cores	256	384
TMUs	16	24
ROPs	8	12

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. Dell Inspiron 16 5645 has a FLOPS value of 2.56 TFLOPS whereas the Dell Inspiron 15 3511 ' has a FLOPS value of 0.84 TFLOPS. If graphical performance of the laptop is important for your use type, the Dell Inspiron 16 5645 may be the better choice between these two setups.

RAM Comparison

RAM	8GB 16GB 32GB	4GB 8GB 12GB 16GB
Memory Bus	1x8 GB	1x4 GB
RAM Clock	5600 MHz	2666 MHz
RAM Type	DDR5	DDR4
Upgradable	Yes	Yes
Max RAM Size	32 GB	16 GB
Total Slots	2	2
Memory Bus	PCI-E Gen 4.0 (4x)	PCI-E Gen 3.0 (4x)

With a larger RAM capacity of 8 GB, the Inspiron 16 5645 offers an advantage for multitasking and resource-intensive applications compared to the Inspiron 15 3511's RAM capacity of 4 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	Dell Inspiron 16 5645	Dell Inspiron 15 3511
Small Models(1-3B):Examples: Phi-2, Qwen-1.8B	✔ Run smoothly.	✖ Not supported.
Medium Models(7-8B):Examples: Mistral-7B, Qwen-7B	✖ Not supported.	✖ Not supported.
Large Models(13-30B):Examples: Mixtral, Qwen-14B	✖ Not supported.	✖ Not supported.
Extra-Large Models(65B+):Examples: LLaMA2-70B, Qwen1.5-72B	✖ Not supported on most systems. Requires high-end GPU or advanced setup.	✖ Not supported on most systems. Requires high-end GPU or advanced setup.

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

📌 MoE Models: Some models like Mixtral 8x7B and Qwen3-30B-A3B use a Mixture of Experts (MoE) design, activating only part of the model during inference. This means they can often run efficiently on laptops with 12–16 GB of VRAM when quantized.

BATTERY

BATTERY	54 Wh 64 Wh	41 Wh 54 Wh
Battery Type	Li-Po	Li-Po
Replaceable	No	No
Fast Charging	Yes	Yes
USB Power Delivery	Yes	No
Charging Port Position	Left	Left
Charge Power	65 W	65 W
Voltage	15 V	11.25 V
Cable Length	1 meters

Moreover, the Inspiron 16 5645 boasts a larger battery capacity of 54 Wh, offering extended usage time compared to the Inspiron 15 3511's41 Wh.

Battery Comparison

Dell Inspiron 16 5645 54 Wh

Avg: 16.0-16.9" 74.15 Wh

Dell Inspiron 15 3511 41 Wh

Avg: 15.0-15.9" 62.1 Wh

STORAGE
Both laptops, the Inspiron 16 5645 and the Inspiron 15 3511 have similar max. storage capacities of 1 TB, allowing for ample space to store files and applications.

Storage Options	256 GB, 512 GB, 1 TB	128 GB, 256 GB, 512 GB, 1 TB
Upgradable	Yes	Yes
Total Slots	1	1
Storage type	SSD (M2)	SSD (M2)
NVMe	Yes	Yes

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.

Dell Inspiron 16 5645 vs Dell Inspiron 15 3511: Display Comparison

The display is an essential aspect to consider when comparing the Dell Inspiron 16 5645 and Dell Inspiron 15 3511 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. Inspiron 16 5645 has a display size of 16.0".On the other hand, Inspiron 15 3511 has a smaller 15.6" display.The total usable screen area of the Inspiron 16 5645 is 742cm² / 115inch² whereas the Inspiron 15 3511's total usable screen area is 670cm² / 104inch².

PPI (Pixels per Inch)
Additionally, the Inspiron 16 5645 features a higher pixel density with 142 pixels per inch (PPI), ensuring sharper image details.

Screen PPI (Pixels Per Inch) Comparison

Dell Inspiron 16 5645 142 PPI

Avg: 16.0-16.9" 169 PPI

Dell Inspiron 15 3511 100 PPI

Avg: 15.0-15.9" 144 PPI

Refresh Rate
Both Inspiron 16 5645 and Inspiron 15 3511 offer the same refresh rate of 60 Hz.

Furthermore, the Inspiron 15 3511 boasts a faster response time of 25.0 ms, reducing motion blur for fast-paced content.

Brightness
The Inspiron 16 5645 offers a higher maximum brightness of 300 nits, delivering a brighter screen.

Brightness Comparison

Dell Inspiron 16 5645 300 nits

Avg: 16.0-16.9" 413 nits

Dell Inspiron 15 3511 220 nits

Avg: 15.0-15.9" 319 nits

Dell Inspiron 16 5645 vs Dell Inspiron 15 3511 Connectivity Comparison

In terms of connectivity,

Wifi
Inspiron 16 5645 features a more advanced Wi-Fi standard v6E, providing faster and more reliable wireless connections compared to Inspiron 15 3511 (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 Inspiron 16 5645 and Inspiron 15 3511 have USB-A ports. Inspiron 16 5645 has 2x USB 3.2 USB-A ports, while Inspiron 15 3511 has 3x USB 3.2 USB-A ports.
Inspiron 16 5645 is equipped with 1x USB 3.2 USB Type-C ports. Inspiron 15 3511 does not have 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 Inspiron 16 5645 nor Inspiron 15 3511 has Thunderbolt port.

HDMI
Both Inspiron 16 5645 and Inspiron 15 3511 feature an HDMI port (1x HDMI 1.4) for connecting to external monitors.

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
Both Inspiron 16 5645 and Inspiron 15 3511 come with an SD Card Reader for easy access to memory cards.

Audio Jack
Both Inspiron 16 5645 and Inspiron 15 3511 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)	v6E	v6
Bluetooth (latest: v5.4)	v5.3	v5.1
USB-A (latest: 3.2)	2x USB 3.2	3x USB 3.2
USB Type-C (latest: USB4 2.0)	1x USB 3.2	No
Thunderbolt (latest: 4)	No	No
HDMI (latest: 2.1)	1x HDMI 1.4	1x HDMI 1.4
Display Port (latest: v2.0)	No	No
VGA	No	No
Fingerprint Sensor	Optional	No
Optical Drive	No	No
Audio Jack 3.5mm	Yes	Yes
Ethernet RJ45	No	No
SD CardReader	Yes	Yes
Proprietary Charging Port	Yes	Yes