Lenovo ThinkPad X1 Ultralight Laptop Review

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Test Systems, SiSoft Sandra

Our test systems all launched relatively recently, and both are targeted at the lightweight, ultra-mobile market. The x120e uses AMD's new Fusion platform, while the U260 uses a last-generation Core i5 with an 18W TDP, as opposed to the 35W processor inside the ThinkPad X1.

HotHardware's Mobile Test Systems
Covering the bases
 Lenovo ThinkPad X1

Intel Core i5 2520M


Intel HD 3000

Integrated Ethernet
Integrated Audio

1x 320GB HDD

Windows 7
Professional (64-bit)

13.3"LED LCD Display
(native 1366x768)
Lenovo ThinkPad X120e

AMD E-350 Zacate (Fusion)


AMD Radeon HD 6310M Graphics

On-Board Wi-Fi
On-Board Audio

1x320GB Hard Drive

Windows 7
 Professional (64-bit)

11.6" LED LCD Display
(native 1366x768)
Lenovo IdeaPad U260

Intel i5-470UM
(1.33 - 1.86 GHz)


Intel HD Graphics

On-Board Ethernet
On-Board Audio

1x320 GB Hard Drive          

Windows 7 Home
Premium (32-bit)

12.5" LED LCD Display
(native 1366x768)
Testing with SiSoft SANDRA 2011
Synthetic Benchmarks

We continued our testing with SiSoftware's SANDRA 2011, the System ANalyzer, Diagnostic and Reporting Assistant.  We ran three of the built-in subsystem tests (CPU Arithmetic, Multimedia, and Memory Bandwidth. All of the scores reported below were taken with the system running in its stock configuration.

The Sandy Bridge-based Core i5-2520M easily wins Sandra's synthetic arithmetic test, though the more powerful CPU in the U260 is competitive.

The ThinkPad X1's processor is the only chip capable of using Intel's AVX instructions; the x32 test only runs on an SB-class processor. The ThinkPad X1 easily surpasses all the competition.

Again, there's no real contest here. The IdeaPad U260 offers nearly double the X120e's memory bandwidth, but the ThinkPad X1 is twice as fast as it in turn.

HD Video

Click To Enlarge; 1080p - ThinkPad X120e

Click To Enlarge; 1080p on HP Mini 311 w/ Ion

Click To Enlarge; 1080p - ThinkPad X1

The X1 has no trouble with HD video playback; even 1080P output barely stresses the CPU to noticable levels.


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