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Razer Blade 15 Base Edition 2021 vs Lenovo ThinkPad L14 Gen 4 Comparison

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Laptop to replace
 Change

Razer Blade 15 Base Edition 2021

15.6 inches | January 2021

Speed 3.5
Size 8
Display 5
Gaming 3
Razer Blade 15 Base Edition 2021
CHECK AT AMAZON
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Lenovo ThinkPad L14 Gen 4

14 inches | February 2023

Speed 3.5
Size 8.5
Display 1.5
Gaming 2
Lenovo ThinkPad L14 Gen 4
CHECK AT AMAZON
Razer Blade 15 Base Edition 2021 vs Lenovo ThinkPad L14 Gen 4 Comparison Overview
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In this review, we will be comparing Blade 15 Base Edition 2021 and ThinkPad L14 Gen 4, two laptops from Razer and Lenovo. Razer Blade 15 Base Edition 2021 was introduced to market in January 2021 and Lenovo ThinkPad L14 Gen 4 was launched in February 2023. As you can see, Blade 15 Base Edition 2021 is 2 years older than ThinkPad L14 Gen 4. Let's see if this age difference between two laptops makes a big difference.

Click for Available Configurations of the Laptops

Razer Blade 15 Base Edition 2021

GPU:
DISPLAY:

Lenovo ThinkPad L14 Gen 4

CPU:
RAM:
DISPLAY:
BATTERY:

Here is a brief look at the main features of Razer Blade 15 Base Edition 2021 and Lenovo ThinkPad L14 Gen 4 before getting into our more detailed comparison.

Razer Blade 15 Base Edition 2021 Key Specs

  • Launched in January 2021
  • 15.6" IPS LCD, 16:9 Aspect Ratio Display
  • CPU: Intel Core i7 10750H
  • GPU: GeForce RTX 3060 6GB
  • 16GB Ram
  • 355 x 235 x 19.9 mm (13.98 x 9.25 x 0.78 inches)
  • Weight: 2.09 kg (4.61 lbs)

Lenovo ThinkPad L14 Gen 4 Key Specs

  • Launched in February 2023
  • 14.0" TN LCD, 16:9 Aspect Ratio Display
  • CPU: Intel Processor U300
  • GPU: GeForce MX550 2GB
  • 8GB Ram
  • 325.4 x 217 x 18.73 mm (12.81 x 8.54 x 0.74 inches)
  • Weight: 1.4 kg (3.09 lbs)

Let's read on the following sections in order to better understand in detail how Blade 15 Base Edition 2021 and ThinkPad L14 Gen 4 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 Razer Blade 15 Base Edition 2021 over Lenovo ThinkPad L14 Gen 4
Screen-to-Body Ratio
~80.4% vs ~76.5% Larger screen area ratio
Side Bezel Thickness
4.8 mm vs 7.8 mm 3 mm thinner bezels
Display Size
15.6 inches vs 14 inches Larger Screen Estate
Refresh Rate
144 Hz vs 60 Hz Smoother media experience
Screen PPI
141 ppi vs 112 ppi More pixels per inch
Screen Resolution
1920 x 1080 pixels vs 1366 x 768 pixels Higher pixel count screen
Max Brightness
300 nits vs 220 nits Brighter Screen
GPU Fabrication Process
8 nm vs 12 nm Newer Generation GPU
GPU FLOPS
12 TFLOPS vs 2.703 TFLOPS Connect more device at the same time
Number of USB-A Ports
3x USB 3.1 vs 2x USB 3.2 Better HDMI connectivity
HDMI Version
2.1 vs 2.0
Reasons to choose Lenovo ThinkPad L14 Gen 4 over Razer Blade 15 Base Edition 2021
Weight
1.40 kg vs 2.09 kg 0.69 kg lighter
CPU Fabrication Process
10 nm vs 14 nm Newer Generation CPU
RAM BUS
PCI-E Gen 4.0 (4x) vs PCI-E Gen 3.0 (4x) Faster RAM
Bluetooth
v5.2 vs v5.1 More advanced Bluetooth connectivity
Webcam Resolution
1920 x 1080 vs 1280 x 720 Higher Resolution Camera
USB-A Port Type
3.2 vs 3.1 Faster USB-A
USB-C Port Type
v4.0 vs v3.2 Faster USB-C connection

Common Strengths of Lenovo ThinkPad L14 Gen 4 and Razer Blade 15 Base Edition 2021
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
Upgradable RAM
Yes vs Yes Option to increase the RAM size
RAM Type
DDR4 vs DDR4 Fast RAM type
Upgradable Storage
Yes vs Yes Option to increase the Storage size
SSD Type
NVMe vs NVMe Faster Data Transfers
Dolby Atmos Support
Yes vs Yes 3D Surround Sound Support
Wi-Fi Standard
v6 vs v6E Fast and Reliable Wi-Fi Connections
Bluetooth Standard
v5.1 vs v5.2 Fast and Reliable Bluetooth Connections
Thunderbolt Port
v3 vs v4 Fast data and power transfer via Thunderbolt Port
HDMI Output
1x HDMI 2.1 vs 1x HDMI 2.1 Connect to External Displays via HDMI cable
VGA Output
No vs No Connect to External Displays via VGA cable
Ethernet RJ45 Port
Yes vs Yes Fast connection to Network via ethernet 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 Lenovo ThinkPad L14 Gen 4 and Razer Blade 15 Base Edition 2021
Touchscreen Capability
No vs No No Touchscreen Capability
HDR Support
No vs No No HDR Support
Razer Blade 15 Base Edition 2021 vs Lenovo ThinkPad L14 Gen 4: Physical Specs Comparison

In this section, we will be comparing the physical specifications and body features of the Razer Blade 15 Base Edition 2021 and the Lenovo ThinkPad L14 Gen 4.

Physical Specs
Weight 2.09 kg (4.61 lbs) 1.4 kg (3.09 lbs)
Surface Area 834 cm2 (129.3 inches2) 706 cm2 (109.4 inches2)
Screen to Surface Ratio ~80.4% ~76.5%
Side Bezel Thickness ~4.8 mm ~7.8 mm
Weight per Inch of Screen 0.13 kg/inch 0.10 kg/inch
0.286 lbs/inch 0.22 lbs/inch
Colors Black Black
Razer Blade 15 Base Edition 2021 vs Lenovo ThinkPad L14 Gen 4 Laptop Size Comparison - Front View
Comparison of the Razer Blade 15 Base Edition 2021 and the Lenovo ThinkPad L14 Gen 4 External Dimensions

Weight

Blade 15 Base Edition 2021 weighs 2.09 kg (4.61 lbs), whereas the ThinkPad L14 Gen 4 weighs 1.4 kg (3.09 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
Razer Blade 15 Base Edition 2021
Avg: 15.0-15.9"
Lenovo ThinkPad L14 Gen 4
Avg: 14.0-14.9"
Thickness Comparison
Razer Blade 15 Base Edition 2021
Avg: 15.0-15.9"
Lenovo ThinkPad L14 Gen 4
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 Razer Blade 15 Base Edition 2021 is 0.13 kg/inch.In comparison, this value for the Lenovo ThinkPad L14 Gen 4 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

Razer Blade 15 Base Edition 2021 vs Lenovo ThinkPad L14 Gen 4: Internals Comparison
CPU Comparison
CPU Model












Base Frequency 2.6 GHz 1.2 GHz
Turbo Frequency 5 GHz 4.4 GHz
Number of Cores 6 5
Number of Threads 12 6
L3 Cache 12 MB 8 MB
Integrated GPU Intel UHD Graphics 630 Intel UHD Graphics (48 EU)
CPU Fabrication Process 14 nm 10 nm
Geekbench 5 (Single) 1188 1583
Geekbench 5 (Multi) 5917 4864
Cinebench 23 (Single) 1183 1579
Cinebench 23 (Multi) 7338 4101

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 Razer Blade 15 Base Edition 2021 and Lenovo ThinkPad L14 Gen 4.

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

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Laptops with: Intel Processor U300
  • Lenovo 13w 2-in-1 Gen 3 13 Intel Compare
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  • Dell Vostro 14 3430 Compare
GPU Comparison
GPU Model



Base Clock Frequency 1215 MHz 1065 MHz
Boost CLock Frequency 1567 MHz 1320 MHz
TGP (Total Graphics Power) 95 W 25 W
Nvidia Optimus Yes
Type Dedicated Dedicated
FLOPS 12 TFLOPS 2.703 TFLOPS
Memory Size 6 GB 2 GB
Memory Type GDDR6 GDDR6
Memory Bus 192 bit 64 bit
Memory Speed 14 Gbps ~12 Gbps
Shading Units Cores 3840 1024
TMUs 120 32
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. Razer Blade 15 Base Edition 2021 has a FLOPS value of 12 TFLOPS whereas the Lenovo ThinkPad L14 Gen 4 ' has a FLOPS value of 2.703 TFLOPS. If graphical performance of the laptop is important for your use type, the Lenovo ThinkPad L14 Gen 4 may be the better choice between these two setups.

RAM Comparison
RAM




Memory Bus 2x8 GB 1x8 GB
RAM Clock 2933 MHz 3200 MHz
RAM Type DDR4 DDR4
Upgradable Yes Yes
Max RAM Size 64 GB 64 GB
Total Slots 2 2
With a larger RAM capacity of 16 GB, the Blade 15 Base Edition 2021 offers an advantage for multitasking and resource-intensive applications compared to the ThinkPad L14 Gen 4'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 CategoryRazer Blade 15 Base Edition (2021)Lenovo ThinkPad L14 Gen 4
CPUIntel Core i7 10750HIntel Processor U300
GPUGeForce RTX 3060 6GBGeForce MX550 2GB
Memory16 GB ; 6 GB VRAM8 GB ; 2 GB VRAM
Available for LLM total~17.3 GB (4.5 GB VRAM 12.8 GB RAM)~6 GB (0.5 GB VRAM 5.5 GB RAM)
Small Models (1-3B): Examples: Phi-2, Qwen-1.8B
Requires ~2 GB memory
✔ Runs Smoothly
fits in your 6 GB VRAM
! Not Practical
doesn't fit in 2 GB VRAM, spills to RAM (VRAM + RAM, slower)
Medium Models (7-8B): Examples: Mistral-7B, Qwen-7B
Requires ~5 GB memory
✔ Modest Speed
doesn't fit in 6 GB VRAM, spills to RAM (VRAM + RAM, slower)
! Not Practical
doesn't fit in 2 GB VRAM, spills to RAM (VRAM + RAM, slower)
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 Practical doesn't fit in 6 GB VRAM, spills to RAM (VRAM + RAM, slower)
✖ 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)

Razer Blade 15 Base Edition (2021)|Lenovo ThinkPad L14 Gen 4

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 LevelTypical RangeUser Experience
Runs Smoothly
(High-end dGPU)
50+ tok/sReal-time response. Feels instant, like ChatGPT.
Runs Well
(Mid-range dGPU)
20-50 tok/sGood interactive performance. Slight delay, but usable.
Modest Speed
(iGPU/NPU/CPU)
5-20 tok/sUsable for tasks that don't need instant responses. Noticeable typing delay.
Borderline / Slow
(Limited hardware)
2-5 tok/sSlow-Very slow. Patience required. Better for batch processing.
Not Practical
<2 tok/sToo 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



Battery Type Li-Po Li-Po
Replaceable No No
Fast Charging Yes Yes
USB Power Delivery Yes Yes
Charging Port Position Left Left
Charge Power 230 W 45 / 65 / 100 W
Moreover, the Blade 15 Base Edition 2021 boasts a larger battery capacity of 65 Wh, offering extended usage time compared to the ThinkPad L14 Gen 4's47 Wh.

Battery Comparison
Razer Blade 15 Base Edition 2021
Avg: 15.0-15.9"
Lenovo ThinkPad L14 Gen 4
Avg: 14.0-14.9"
STORAGE
The ThinkPad L14 Gen 4 offers a larger max storage capacity of 2 TB, providing more room for storing files and data compared to the Blade 15 Base Edition 2021's storage capacity of 512 GB.
Storage Options 512 GB 256 GB, 512 GB, 1 TB, 2 TB
Upgradable Yes Yes
Total Slots 2 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.

Razer Blade 15 Base Edition 2021 vs Lenovo ThinkPad L14 Gen 4: Display Comparison

The display is an essential aspect to consider when comparing the Razer Blade 15 Base Edition 2021 and Lenovo ThinkPad L14 Gen 4 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. Blade 15 Base Edition 2021 has a display size of 15.6".On the other hand, ThinkPad L14 Gen 4 has a smaller 14.0" display.The total usable screen area of the Blade 15 Base Edition 2021 is 670cm2 / 104inch2 whereas the ThinkPad L14 Gen 4's total usable screen area is 540cm2 / 84inch2.


PPI (Pixels per Inch)
Additionally, the Blade 15 Base Edition 2021 features a higher pixel density with 141 pixels per inch (PPI), ensuring sharper image details.

Screen PPI (Pixels Per Inch) Comparison
Razer Blade 15 Base Edition 2021
Avg: 15.0-15.9"
Lenovo ThinkPad L14 Gen 4
Avg: 14.0-14.9"

Refresh Rate
The Blade 15 Base Edition 2021 offers a higher refresh rate of 144 Hz, resulting in smoother motion and improved visual experience.

Brightness
The Blade 15 Base Edition 2021 offers a higher maximum brightness of 300 nits, delivering a brighter screen.

Brightness Comparison
Razer Blade 15 Base Edition 2021
Avg: 15.0-15.9"
Lenovo ThinkPad L14 Gen 4
Avg: 14.0-14.9"

Razer Blade 15 Base Edition 2021 vs Lenovo ThinkPad L14 Gen 4 Connectivity Comparison

In terms of connectivity,

Wifi
ThinkPad L14 Gen 4 features a more advanced Wi-Fi standard v6E, providing faster and more reliable wireless connections compared to Blade 15 Base Edition 2021 (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 Blade 15 Base Edition 2021 and ThinkPad L14 Gen 4 have USB-A ports. Blade 15 Base Edition 2021 has 3x USB 3.1 USB-A ports, while ThinkPad L14 Gen 4 has 2x USB 3.2 USB-A ports.
Both Blade 15 Base Edition 2021 and ThinkPad L14 Gen 4 have USB Type-C ports. Blade 15 Base Edition 2021 has 2x USB 3.2 USB Type-C ports, while ThinkPad L14 Gen 4 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
Both Blade 15 Base Edition 2021 and ThinkPad L14 Gen 4 feature Thunderbolt ports. Blade 15 Base Edition 2021 has Thunderbolt 3, while ThinkPad L14 Gen 4 has Thunderbolt 4.

HDMI
Both Blade 15 Base Edition 2021 and ThinkPad L14 Gen 4 feature an HDMI port. Blade 15 Base Edition 2021 offers 1x HDMI 2.1, while ThinkPad L14 Gen 4 offers 1x HDMI 2.0.

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 Blade 15 Base Edition 2021 and ThinkPad L14 Gen 4 come with an SD Card Reader for easy access to memory cards.

Audio Jack
Both Blade 15 Base Edition 2021 and ThinkPad L14 Gen 4 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)
v5.1 v5.2
USB-A
(latest: 3.2)
3x USB 3.1 2x USB 3.2
USB Type-C
(latest: USB4 2.0)
2x USB 3.2 2x USB 4.0
Thunderbolt
(latest: 5)
Thunderbolt 3 Thunderbolt 4
HDMI
(latest: 2.1)
1x HDMI 2.1 1x HDMI 2.0
Display Port
(latest: v2.0)
No No
VGA No No
Fingerprint Sensor No Optional
Optical Drive No No
Audio Jack 3.5mm Yes Yes
Ethernet RJ45 Yes Yes
SD CardReader Yes Yes
Proprietary Charging Port Yes No

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