ThinkPad X series

ThinkPad X series
	ThinkPad X220
Developer	IBM (2000–2005); LG/IBM (2000-2004, only for South Korea branding); Lenovo (2005–present)
Type	Compact Laptop, ; Netbook (X1##e), ; Subnotebook (X2##),; Ultrabook
Release date	September 2000
Predecessor	ThinkPad 240; ThinkPad 500 series

The ThinkPad X series is a line of laptop computers and convertible tablets produced by Lenovo with less power than its other counterparts. It was initially produced by IBM until 2005.

IBM announced the ThinkPad X series (initially the X20) in September 2000 with the intention of providing "workers on the move with a better experience in extra-thin and extra-light mobile computing." The ThinkPad X series replaced both the 240 and 570 series during IBM's transition from numbered to letter series during the early 2000s. The first X Series laptops were "slimmer than a deck of cards" and "lighter than a half-gallon of milk", despite the presence of a 12.1-inch Thin-film transistor (TFT LCD) display. These design values—thin and light—continued to be integral to the ThinkPad X-series laptops' design and marketing, even after the purchase of IBM's Personal Computing Division by Lenovo. The first X Series ThinkPad released by Lenovo was the X41 in 2005.

The ThinkPad X-series laptops from Lenovo were described by Trusted Reviews as "combining an ultraportable's weight and form factor with a durable design." The X-series laptop styles include traditional ultraportables, as well as convertible tablet designs. According to Lenovo, the ThinkPad X-series laptops include low power processors, offer long battery life, and several durability features such as a Roll Cage (Magnesium Frame around the Display), magnesium alloy covers, and a spill-resistant keyboard but currently lacks a replaceable battery and upgradable RAM slots.

Battery configuration

Main	M(x)	Main hot-swappable (max.cells)	Secondary	U	Ultrabay removable
	M(x)	Main hot-swappable (max.cells)		u	Ultrabay unremovable
	M(x)	Main removable (max.cells)		m(x)	internal (max.cells) "PowerBridge"
	m(x)	Main internal (max.cells)		S	Slice battery

Laptop color codes

Processor

Socketed desktop processor

Socketed mobile processor

Soldered high power processor

Soldered standard power processor

Soldered low power processor

Soldered ultra low power processor

Weight

0.9 kg (2.0 lb)	Up to 0.91 kg
1.0 kg (2.2 lb)	0.92–1.0 kg
1.1 kg (2.4 lb)	1.01–1.1 kg
1.2 kg (2.6 lb)	1.11–1.2 kg
1.3 kg (2.9 lb)	1.21–1.3 kg
1.4 kg (3.1 lb)	1.31–1.4 kg
1.5 kg (3.3 lb)	1.41–1.5 kg
1.6 kg (3.5 lb)	1.51–1.6 kg
1.7 kg (3.7 lb)	1.61–1.7 kg
1.8 kg (4.0 lb)	1.71–1.81 kg
1.9 kg (4.2 lb)	1.81–1.91 kg
2.0 kg (4.4 lb)	1.91–2.03 kg
2.1 kg (4.6 lb)	2.04–2.14 kg
2.3 kg (5.1 lb)	2.15–2.4 kg
2.5 kg (5.5 lb)	2.41–2.75 kg
2.8 kg (6.2 lb)	2.76–3.05 kg
3.1 kg (6.8 lb)	3.06–3.42 kg
3.5 kg (7.7 lb)	3.43–3.99 kg
4.0 kg (8.8 lb)	4.0–4.99 kg
5.5 kg (12 lb)	5.0–6.49 kg
7.2 kg (16 lb)	6.5–7.99 kg
9.1 kg (20 lb)	8.0–9.99 kg
10.7 kg (24 lb)	10–11.99 kg
12.7 kg (28 lb)	12–14.49 kg
14.5 kg (32 lb)	14.5–17.99 kg
18.1 kg (40 lb)	18–20.99 kg
21.7 kg (48 lb)	21–23.99 kg
24 kg (53 lb)	24–28.99 kg
29.5 kg (65 lb)	29 kg and above

Screen resolution

4K or higher

1440p+ (WQHD,QXGA)

1080p+ (Full HD,UXGA)

Better than 768p (SXGA,SXGA+)

600p+ (SVGA,HD,XGA,HD+)

Up to 600p (VGA)

Graphics

Dual standard socket graphics option

Dual proprietary socket graphics option

Standard socket graphics option

Proprietary socket graphics option

Soldered performance graphics option

Soldered midrange graphics option

Soldered mainstream graphics option

Soldered entry graphics option

Integrated entry graphics

Integrated basic graphics

Laptop storage combinations (excluding WWAN slot)

PCIe 4.0 x4	PCIe 3.0 x4	PCIe 3.0 x2	M.2 SATA	mSATA	1.8" SATA	2.5" SATA	1.8" IDE	2.5" IDE
2019 Not yet (laptops)	2013	2013	2013	2009	2003	2003	1991	1988
3						2
4
3						1
2						2
3					2
3
2						1
4
3					1
2					2
2
1						1
3
2					1
1
2
1					1
		2				1
						4
	1
		1				1
						3
		1
			1			1
				1		1
					1	1
						2
								3
					1
						1
								2
							1
								1

Laptop memory

Amount	LPDDR5X	LPDDR5	DDR5	LPDDR4X	LPDDR4	DDR4	LPDDR3	DDR4	DDR3L		DDR3		DDR2		DDR	SDR	EDO	FPM
						dual channel		< dual channel	dual channel	< dual channel	dual channel	< dual channel	dual channel	< dual channel
	2022 (laptops)	2019 (laptops)	2020	2017	2014	2014	2012	2014	2010		2007		2003		1998	1993	1993	1987
max memory = 512 GB	N/A	N/A	512 GB	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
max memory = 256 GB	N/A		256 GB (4 slots)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
max memory = 128 GB	128 GB		128 GB	N/A	N/A	128 GB (4 slots)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
64 GB ≤ max memory < 128 GB		64 GB		N/A	N/A	64 GB	N/A	64 GB (2 slots)	64 GB (4 slots)	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
32 GB ≤ max memory < 64 GB				32 GB	32 GB	32 GB	N/A		32 GB	32 GB (2 slots)	32 GB (4 slots)	N/A	N/A	N/A	N/A	N/A	N/A	N/A
16 GB ≤ max memory < 32 GB						16 GB	16 GB		16 GB		16 GB	16 GB (2 slots)	16 GB (4 slots)	N/A	N/A	N/A	N/A	N/A
8 GB ≤ max memory < 16 GB						8 GB			8 GB		8 GB		8 GB	8 GB (2 slots)	8 GB (4 slots)	N/A	N/A	N/A
4 GB ≤ max memory < 8 GB						4 GB			4 GB		4 GB		4 GB		4 GB	4 GB (4 slots)	4 GB (4 slots)	N/A
2 GB ≤ max memory < 4 GB						2 GB (8 chips)			2 GB		2 GB		2 GB			2 GB	2 GB	N/A
1 GB ≤ max memory < 2 GB			1 GB (1 chip)	dual channel min	dual channel min	N/A		single channel min	1 GB		1 GB		1 GB					1 GB (4 slots)
512 MB ≤ max memory < 1 GB	N/A	N/A	N/A	single channel min	single channel min	N/A	dual channel min	half channel min	512 MB (8 chips)		512 MB (8 chips)		512 MB					512 MB
256 MB ≤ max memory < 512 MB	N/A	N/A	N/A	256 MB (1 chip)	256 MB (1 chip)	N/A	single channel min	256 MB (1 chip)	N/A	single channel min	N/A	single channel min	256 MB
128 MB ≤ max memory < 256 MB	N/A	N/A	N/A	N/A	N/A	N/A	128 MB (1 chip)	N/A	N/A	half channel min	N/A	half channel min
64 MB ≤ max memory < 128 MB	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	64 MB (1 chip)	N/A	64 MB (1 chip)
max memory < 64 MB	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A

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