Dell Inspiron 14 7400 vs Dell Inspiron 15 5515 Comparison

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Dell Inspiron 14 7400

14.5 inches | January 2020

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Dell Inspiron 15 5515

15.6 inches | April 2021

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Dell Inspiron 14 7400 vs Dell Inspiron 15 5515 Comparison Overview

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In this review, we will be comparing Inspiron 14 7400 and Inspiron 15 5515, two laptops by Dell. Dell Inspiron 14 7400 was introduced to market in January 2020 and Dell Inspiron 15 5515 was launched in April 2021. There is 15 months difference between Inspiron 14 7400 and Inspiron 15 5515 so it would still give an advantage to younger Inspiron 15 5515.

Click for Available Configurations of the Laptops

Inspiron 14 7400 and Inspiron 15 5515 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 14 7400 and Dell Inspiron 15 5515 before getting into our more detailed comparison.

Dell Inspiron 14 7400 Key Specs

Launched in January 2020
14.5" IPS LCD, 16:10 Aspect Ratio Display
CPU: Intel Core i5 1135G7
GPU: GeForce MX350 2GB
8GB Ram
321.6 x 224.5 x 14.2-16.7 mm (12.66 x 8.84 x 0.56-0.66 inches)
Weight: 1.25 kg (2.76 lbs)

Dell Inspiron 15 5515 Key Specs

Launched in April 2021
15.6" IPS LCD, 16:9 Aspect Ratio Display
CPU: AMD Ryzen 3 5300U
GPU: Radeon RX Vega 6 (Ryzen 4000)
8GB Ram
356 x 228.9 x 14.6-17.9 mm (14.02 x 9.01 x 0.57-0.7 inches)
Weight: 1.64 kg (3.62 lbs)

Let's read on the following sections in order to better understand in detail how Inspiron 14 7400 and Inspiron 15 5515 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 14 7400 over Dell Inspiron 15 5515

Weight	1.25 kg vs 1.64 kg	0.39 kg lighter
Screen-to-Body Ratio	~84.4% vs ~82.4%	Larger screen area ratio
Side Bezel Thickness	4.7 mm vs 5.3 mm	0.6 mm thinner bezels
Contrast Rate	800:1 vs 600:1	more pleasing colors
Screen PPI	208 ppi vs 141 ppi	More pixels per inch
Screen Resolution	2560 x 1600 pixels vs 1920 x 1080 pixels	Higher pixel count screen
sRGB Color Space	97.4% vs 55.7%	Wider sRGB Color Space Coverage
DCI-P3 Color Gamut	65.8% vs 39.5%	Wider DCI-P3 Color Gamut
Adobe RGB Profile	67.8% vs 38.4%	Wider Adobe RGB Coverage
Max Brightness	300 nits vs 250 nits	Brighter Screen
Response Time	22 ms vs 35 ms	Faster Response screen
GPU FLOPS	1.879 TFLOPS vs 1.23 TFLOPS	Dedicated GPU unit
GPU Type	Dedicated vs Integrated	Faster USB-C connection
USB-C Port Type	v4.0 vs v3.2	Support audio, data, power and video all through one single port
Thunderbolt	v4 vs No	Better HDMI connectivity
HDMI Version	2.0 vs 1.4

Reasons to choose Dell Inspiron 15 5515 over Dell Inspiron 14 7400

Display Size	15.6 inches vs 14.5 inches	Larger Screen Estate
CPU Fabrication Process	7 nm vs 10 nm	Newer Generation CPU
GPU Fabrication Process	7 nm vs 14 nm	Newer Generation GPU
Upgradable RAM	Yes vs No	More RAM Options
Numeric Pad	Yes vs No	Fast way to input numbers

Common Strengths of Dell Inspiron 15 5515 and Dell Inspiron 14 7400

Screen Coating	Matte vs Matte	Less reflections on the screen
Fast Charging Support	Yes vs Yes	Charge the battery in a shorter time
USB Power Delivery	Yes vs Yes	Charging via USB port gives flexibility
RAM Type	PCI-E Gen 3.0 (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	v6 vs v6	Fast and Reliable Wi-Fi Connections
Bluetooth Standard	v5.1 vs v5.1	Fast and Reliable Bluetooth Connections
Fingerprint Sensor	Yes vs Yes	Easy Login with Fingerprint Sensor
HDMI Output	1x HDMI 2.0 vs 1x HDMI 2.0	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
Keyboard Backlight	Yes vs Yes	Easily see the keys under low light

Common Weaknesses of Dell Inspiron 15 5515 and Dell Inspiron 14 7400

Touchscreen Capability	No vs No	No Touchscreen Capability

Dell Inspiron 14 7400 vs Dell Inspiron 15 5515: Physical Specs Comparison

In this section, we will be comparing the physical specifications and body features of the Dell Inspiron 14 7400 and the Dell Inspiron 15 5515.

Physical Specs
Weight	1.25 kg (2.76 lbs)	1.64 kg (3.62 lbs)
Surface Area	722 cm2 (111.9 inches2)	815 cm2 (126.3 inches2)
Screen to Surface Ratio	~84.4%	~82.4%
Side Bezel Thickness	~4.7 mm	~5.3 mm
Weight per Inch of Screen	0.09 kg/inch	0.11 kg/inch
	0.198 lbs/inch	0.242 lbs/inch
Colors	Silver	Blue

Comparison of the Dell Inspiron 14 7400 and the Dell Inspiron 15 5515 External Dimensions

Weight

Inspiron 14 7400 weighs 1.25 kg (2.76 lbs), whereas the Inspiron 15 5515 weighs 1.64 kg (3.62 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 14 7400 1.25 kg

Avg: 14.0-14.9" 1.42 kg

Dell Inspiron 15 5515 1.64 kg

Avg: 15.0-15.9" 1.95 kg

Thickness Comparison

Dell Inspiron 14 7400 14.20 mm

Avg: 14.0-14.9" 17.12 mm

Dell Inspiron 15 5515 14.60 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 14 7400 is 0.09 kg/inch.In comparison, this value for the Dell Inspiron 15 5515 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 14 7400 vs Dell Inspiron 15 5515: Internals (CPU, GPU, RAM, Battery, SSD, etc.) Comparison

CPU Comparison

CPU Model	Intel Core i5 1135G7 Intel Core i7 1165G7	AMD Ryzen 3 5300U AMD Ryzen 5 5500U AMD Ryzen 7 5700U
Base Frequency	0.9-2.4 GHz	2.6 GHz
Turbo Frequency	4.2 GHz	3.8 GHz
Number of Cores	4	4
Number of Threads	8	8
L3 Cache	8 MB	4 MB
Integrated GPU	Iris Xe Graphics G7 80EU	Radeon RX Vega 6
CPU Fabrication Process	10 nm	7 nm
Geekbench 5 (Single)	1324	1008
Geekbench 5 (Multi)	4633	3760
Cinebench 23 (Single)	1355	1125
Cinebench 23 (Multi)	5087	4664

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 14 7400 and Dell Inspiron 15 5515.

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

Laptops with: Intel Core i5 1135G7

Laptops with: AMD Ryzen 3 5300U

GPU Comparison

GPU Model	GeForce MX350 2GB	Radeon RX Vega 6 (Ryzen 4000)
Base Clock Frequency	747 MHz	300 MHz
Boost CLock Frequency	937 MHz	1600 MHz
TGP (Total Graphics Power)	20 W	45 W
Type	Dedicated	Integrated
FLOPS	1,199 GFLOPS	1,229 GFLOPS
Memory Size	2 GB	System Shared
Memory Type	GDDR5	System Shared
Memory Bus	64 bit	System Shared
Memory Speed	1752 MHz 7 Gbps effective	System Shared
Shading Units Cores	640	384
TMUs	32	24
ROPs	16	8

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 14 7400 has a FLOPS value of 1.879 TFLOPS whereas the Dell Inspiron 15 5515 ' has a FLOPS value of 1.23 TFLOPS. If graphical performance of the laptop is important for your use type, the Dell Inspiron 14 7400 may be the better choice between these two setups.

RAM Comparison

RAM	8GB 16GB	8GB 16GB 32GB
Memory Bus	2x4 GB	2x4 GB
RAM Clock	4267 MHz	3200 MHz
RAM Type	LPDDR4X	DDR4
Upgradable	No	Yes
Memory Bus	PCI-E Gen 3.0 (4x)	PCI-E Gen 3.0 (4x)

Both laptops, the Inspiron 14 7400 and the Inspiron 15 5515, 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	Dell Inspiron 14 7400	Dell Inspiron 15 5515
Small Models(1-3B):Examples: Phi-2, Qwen-1.8B	✖ Not supported.	✔ Run smoothly.
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	52 Wh 78 Wh	41 Wh 54 Wh
Battery Type	Li-Ion	Li-Po
Replaceable	No	No
Fast Charging	No	Yes
USB Power Delivery	Yes	Yes
Charging Port Position	Left	Left
Charge Power	65 W	65 W
Voltage	7.6 V	11.25 V
AC Adapter Weight	290 gramm

Moreover, the Inspiron 14 7400 boasts a larger battery capacity of 52 Wh, offering extended usage time compared to the Inspiron 15 5515's41 Wh.

Battery Comparison

Dell Inspiron 14 7400 52 Wh

Avg: 14.0-14.9" 55.79 Wh

Dell Inspiron 15 5515 41 Wh

Avg: 15.0-15.9" 62.1 Wh

STORAGE
Both laptops, the Inspiron 14 7400 and the Inspiron 15 5515 have similar max. storage capacities of 2 TB, allowing for ample space to store files and applications.

Storage Options	256 GB, 512 GB, 1 TB, 2 TB	256 GB, 512 GB, 1 TB, 2 TB
Upgradable	Yes	Yes
Total Slots	1	2
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 14 7400 vs Dell Inspiron 15 5515: Display Comparison

The display is an essential aspect to consider when comparing the Dell Inspiron 14 7400 and Dell Inspiron 15 5515 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 14 7400 has a display size of 14.5".On the other hand, Inspiron 15 5515 has a larger15.6" display.The total usable screen area of the Inspiron 14 7400 is 610cm² / 94inch² whereas the Inspiron 15 5515's total usable screen area is 670cm² / 104inch².

PPI (Pixels per Inch)
Additionally, the Inspiron 14 7400 features a higher pixel density with 208 pixels per inch (PPI), ensuring sharper image details.

Screen PPI (Pixels Per Inch) Comparison

Dell Inspiron 14 7400 208 PPI

Avg: 14.0-14.9" 173 PPI

Dell Inspiron 15 5515 141 PPI

Avg: 15.0-15.9" 144 PPI

Refresh Rate
Both Inspiron 14 7400 and Inspiron 15 5515 offer the same refresh rate of 60 Hz.

Furthermore, the Inspiron 14 7400 boasts a faster response time of 22.0 ms, reducing motion blur for fast-paced content.

Brightness
The Inspiron 14 7400 offers a higher maximum brightness of 300 nits, delivering a brighter screen.

Brightness Comparison

Dell Inspiron 14 7400 300 nits

Avg: 14.0-14.9" 383 nits

Dell Inspiron 15 5515 250 nits

Avg: 15.0-15.9" 319 nits

Dell Inspiron 14 7400 vs Dell Inspiron 15 5515 Connectivity Comparison

In terms of connectivity,

Wifi
Both laptops offer the same Wi-Fi standard (v6), ensuring fast and reliable wireless connections.

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 14 7400 and Inspiron 15 5515 feature 2x USB 3.2 USB-A ports.
Both Inspiron 14 7400 and Inspiron 15 5515 have USB Type-C ports. Inspiron 14 7400 has 1x USB 4.0 USB Type-C ports, while Inspiron 15 5515 has 1x USB 3.2 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
Inspiron 14 7400 is equipped with Thunderbolt 4 port. Inspiron 15 5515 does not have Thunderbolt port.

HDMI
Both Inspiron 14 7400 and Inspiron 15 5515 feature an HDMI port. Inspiron 14 7400 offers 1x HDMI 2.0, while Inspiron 15 5515 offers 1x HDMI 1.4.

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 14 7400 and Inspiron 15 5515 come with an SD Card Reader for easy access to memory cards.

Audio Jack
Both Inspiron 14 7400 and Inspiron 15 5515 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	v6
Bluetooth (latest: v5.4)	v5.1	v5.1
USB-A (latest: 3.2)	2x USB 3.2	2x USB 3.2
USB Type-C (latest: USB4 2.0)	1x USB 4.0	1x USB 3.2
Thunderbolt (latest: 4)	Thunderbolt 4	No
HDMI (latest: 2.1)	1x HDMI 2.0	1x HDMI 1.4
Display Port (latest: v2.0)	No	No
VGA	No	No
Fingerprint Sensor	Yes	Yes
Optical Drive	No	No
Audio Jack 3.5mm	Yes	Yes
Ethernet RJ45	No	No
SD CardReader	Yes	Yes
Proprietary Charging Port	Yes	Yes