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Dell Inspiron 16 5645 Laptop vs Dell Inspiron 15 i3 Laptop

Buy the Inspiron 16 5645 if you want more processing power, a bigger screen and a touch display. Its Ryzen 7 8840U with 8 cores and 16 threads, 16 GB of DDR5 and a 1 TB SSD handle heavy multitasking and light creative work well. The 15.6-inch model is a basic machine: the Core i3-1215U with 6 cores is fine for browsing, documents and classes, but it slows under sustained load. Owners of the 16 praise the screen and keyboard; the 15 is a budget pick that gets the basics done.

  • Choose the Inspiron 16 5645 if you multitask, edit photos or want a larger touchscreen and stronger processor.
  • Choose the Dell 15 if you need a light, simple laptop for school, email and web browsing.

Prices

  • Dell Inspiron 16 5645 Laptop: $999.99 at Amazon (checked today)
  • Dell Inspiron 15 i3 Laptop: $715.00 at Amazon (last seen Nov 8)
  • Difference: the Dell Inspiron 15 i3 Laptop is $284.99 cheaper than the Dell Inspiron 16 5645 Laptop at the latest prices (Nov 8 and Nov 10)
Dell
Dell Inspiron 16 5645 Laptop

Dell Inspiron 16 5645 Laptop
5(1 rating)
$999.99at AmazonChecked 12 h ago
See all prices and details
Visit Amazon

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Pros
  • 8-core Ryzen 7 handles heavy multitasking
  • 16-inch FHD touchscreen
  • Backlit keyboard with numeric keypad
  • Wi-Fi 6E for faster wireless
  • 1 TB NVMe SSD
Cons
  • Heavier at 4.12 lbs
  • RAM is soldered and capped at 16 GB
  • No Windows 11 Pro
Dell
Dell 15 touchscreen laptop with 1TB of storage

Dell Inspiron 15 i3 Laptop

Dell 15 touchscreen laptop with 1TB of storage

5(3 ratings)
$715.00at AmazonChecked Nov 8
See all prices and details
Visit Amazon

As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • Lighter at 3.65 lbs
  • RAM upgradeable to 32 GB
  • Windows 11 Pro included
  • 120 Hz display refresh rate
Cons
  • Core i3 slows under sustained load
  • No touchscreen
  • Intel UHD graphics limit gaming and creative work
  • Wi-Fi 6 only

What separates them

Dell Inspiron 16 5645 LaptopDell Inspiron 15 i3 Laptop
ProcessorAMD Ryzen 7 8840U, 8 cores and 16 threads, up to 5.1 GHzIntel Core i3-1215U, 6 cores and 8 threads, up to 4.4 GHz
Memory16 GB DDR5 at 5600 MT/s, soldered, max 16 GB16 GB DDR4, upgradeable to 32 GB
Display16-inch FHD touchscreen15.6-inch FHD, non-touch, 120 Hz
GraphicsAMD Radeon integrated graphicsIntel UHD integrated graphics
Weight4.12 lbs3.65 lbs
WirelessWi-Fi 6E and BluetoothWi-Fi 6 and Bluetooth
Operating systemWindows 11 HomeWindows 11 Pro
KeyboardBacklit with numeric keypadStandard keyboard

Price history

$1,099.99$34.99
Nov 8Nov 10
  • Dell Inspiron 16 5645 Laptop: lowest $969.00 on Nov 10 at Walmart.
  • Dell Inspiron 15 i3 Laptop: lowest $34.99 on Nov 10 at Walmart.

Prices at every store

Dell Inspiron 16 5645 Laptop

  • WalmartNew

    In stockSold by CompNex Tech Solutions

    $969.00Free shippingChecked 12 h ago
    Visit Walmart
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $999.99Free shippingChecked 12 h ago
    Visit Amazon
  • WalmartNew

    Out of stockSold by Top Gifts of Tech, LLCReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $699.00Free shippingChecked 12 h ago
    Visit Walmart
All 2 stores and price history →

Dell Inspiron 15 i3 Laptop

  • WalmartNew

    In stock

    $34.99+ $6.99 shippingChecked 4 h ago
    Visit Walmart
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $715.00Free shippingChecked Nov 8
    Visit Amazon
All 2 stores and price history →

Specs compared

SpecDell Inspiron 16 5645 LaptopDell Inspiron 15 i3 Laptop
colorBlueBlack
ProcessorAMD Ryzen™ 7 8840U 8-core/16-thread Processor w…Intel Core i3-1215U
WirelessRealtek Wi-Fi 6E RTL8852CE, 2x2, 802.11ax, MU-M…Wi-Fi 6 and Bluetooth
Proc. BrandAMDIntel
Screen Size16 in15.6 in
Graphic CardAMD Radeon GraphicsIntel UHD Graphics
Core Count86
Proc. Speed5.1 GHz4.4 GHz
Data Storage1 TB1 TB
TouchscreenYN
Memory16 GB: 2 x 8 GB, DDR5, 5600 MT/s—
Storage1 TB, M.2, PCIe NVMe, SSD—
Show all 32 specsShow fewer specs
SpecDell Inspiron 16 5645 LaptopDell Inspiron 15 i3 Laptop
Operating SystemWindows 11 Home, English, French, Spanish—
Graphics CardAMD Radeon™ Graphics—
Battery Capacity4-Cell Battery, 54WHr (Integrated)—
Battery LifeUp to 11 hours, 20 minutes—
Power Adapter65 Watt AC adapter—
Starting Weight4.12 lbs (1.87 kg)—
Camera1080p at 30 fps FHD RGB camera, Dual-array micr…—
KeyboardIce Blue English Backlit Copilot Key Keyboard, …—
HD Capacity1 TB—

What reviewers say

Dell Inspiron 15 i3 Laptop

Owner feedback on this Inspiron 15 configuration is limited, but buyers of similar i3 Inspiron 15 models generally find them fine for everyday tasks and complain about the plastic build and modest performance under load.

What people mention
  • PerformanceMixedFine for browsing, Office and streaming, but the i3 slows under heavy multitasking or large files.
  • BuildCriticisedOwners describe the plastic body as functional but not premium.
  • BatteryMixedTypical for a 15-inch budget laptop: a full workday is a stretch, so carry the charger.
  • DisplayPraisedThe 15.6-inch 1080p panel is sharp and the 120Hz refresh looks smooth for the price.

Questions and answers

Which is better for college work?
The Inspiron 16 5645 is better for demanding majors like engineering or design. The Dell 15 handles notes, essays and web research fine.
Which lasts longer?
The Inspiron 16 has a 54 Whr battery rated up to 11 hours 20 minutes. The Dell 15 has no published battery rating, so expect shorter runtime on the i3.
Is the Inspiron 16 worth stepping up to?
Yes if you multitask, edit photos or want a touchscreen. The Ryzen 7 and DDR5 memory are a clear step above the i3 and DDR4.
Can I upgrade the memory?
The Dell 15 accepts up to 32 GB of DDR4. The Inspiron 16 is soldered at 16 GB and cannot be upgraded.
Which is better for light gaming?
The Inspiron 16. Its Radeon graphics beat Intel UHD, though neither is a gaming laptop.
Does either have a touchscreen?
The Inspiron 16 5645 has a touchscreen. The Dell 15 does not, despite the listing title.

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More comparisons

  • Dell Inspiron 15 Touchscreen Laptop vs Dell Inspiron 16 5645 Laptop
  • Dell Inspiron 16 5645 Laptop vs Dell Inspiron 14 7445 2-in-1 Laptop

Buying guides that pick them

  • Best Dell laptops for everyday home and work use
Laptop Type
PC Laptops
—
Max RAM16 GB—
Solid State Drive Capacity1 TB—
In / Out TypeHDMI—
Built-In Camera Information1080P Webcam—
HD Type—No Drive
Resolution—1920 x 1080
Refresh Rate—120 Hz
Display—LED
Rec. Use—College
edition—i3|16GB RAM|1TB SSD