Lenovo ThinkPad X1 Carbon Ultrabook Review
SiSoftware SANDRA and ATTO
SiSoft SANDRA
Synthetic General Performance Mertrics
![](https://hothardware.com/articleimages/Item1894/small_san-mm.png)
![](https://hothardware.com/articleimages/Item1894/small_san-mm.png)
SANDRA CPU Arithmetic and Multimedia Performance
![](https://hothardware.com/articleimages/Item1894/small_san_mem.png)
![](https://hothardware.com/articleimages/Item1894/small_san-disk.png)
SANDRA Memory and Physical Disk Performance
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Lenovo ThinkPad X1 Carbon and Asus Zenbook SSD Performance Comparison with ATTO
We were so impressed with the SSD performance numbers with our first round of ultrabooks that hit the lab, that we've added ATTO as a quick sanity check for many of our notebook reviews lately, especially SSD-powered machines.
![](https://hothardware.com/articleimages/Item1749/atto-ux21.png)
Asus Zenbook UX21
Lenovo ThinkPad X1 Carbon