Compare Lenovo – 81WB vs Lenovo – 21CB Specifications

81WB 21CB
ENERGY STAR Partner
Lenovo Group Limited Lenovo Group Limited
Product Category
Computers Computers
Type
Notebook Notebook
Brand Name
Lenovo Lenovo
Model Name
IdeaPad 3 15IML05 ThinkPad X1 Carbon Gen 10
Model Number
81WB 21CB
Additional Model Information
IdeaPad 15sIML 2020, IdeaPad 3 15IML05 D, IdeaPad 3 15IML05 U, Lenovo V15 G1 IML,81WR, ThinkPad X1 Yoga Gen 7, ThinkPad X1 Yoga Gen 7 LTE2, ThinkPad X1 Yoga Gen 7 5G, ThinkPad X1 Carbon Gen 10 LTE1, ThinkPad X1 Carbon Gen 10 LTE2, ThinkPad X1 Carbon Gen 10 5G,21CC, 21CD, 21CE,
Date Available On Market
January 4, 2021 March 8, 2022
Date Certified
November 6, 2020 May 23, 2023
Markets
United States, Switzerland, Taiwan, Japan, Canada United States, Switzerland, Taiwan, Japan, Canada
CB Model Identifier
ES_1037540_81WB_01032020155856_9898186 ES_1037540_21CB_01192022102436I06_7349927
Meets ENERGY STAR Most Efficient 2024 Criteria
No No
Fuel Type
Notebook Notebook
Touch Screen
No Yes
Notebooks, Desktops, Integrated Computers, Slate/Tablets, Two-in-one Notebooks, and Portable All-in-ones Category for TEC (Typical Energy Consumption) Criteria
1 2
Category 1: Processor Brand
Intel Other
Category 1: Processor Name
Core i7 N/A
Category 1: Operating System Name
Windows 10 N/A
Category 1: Base Processor Speed Per Core (GHz)
2 N/A
Category 1: Physical CPU Cores (count)
4 N/A
Category 1: System Memory (GB)
12 N/A
Category 1: Default Low-power Mode
None None
Category 1: Long Idle Power Used for Sleep Mode
No No
Category 1: Off Mode (watts)
0 N/A
Category 1: Sleep Mode (watts)
0 N/A
Category 1: Long Idle (watts)
3 N/A
Category 1: Short Idle (watts)
5 N/A
Category 1: Base TEC Allowance (kWh)
8 N/A
Category 1: Functional Adder Allowances (kWh)
17 N/A
Category 1: TEC of Model (kWh)
17 N/A
Ethernet Capability
Yes No
Sleep Mode Default Time Upon Shipment (min.)
30 10
Display Sleep Mode Default Time Upon Shipment (min.)
10 10
WOL (Wake on LAN) From Sleep
Shipped Disabled Shipped Enabled Under All Conditions
Date Qualified
November 6, 2020 May 23, 2023

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