The Lenovo ThinkPad X1 is available with the following CPUs:
- Intel Core i5-1335U (10 cores/12 threads, up to 4.6GHz, 12MB cache)
- Intel Core i5-1345U (10 cores/12 threads, up to 4.7GHz, 12MB cache)
- Intel Core i7-1355U (10 cores/12 threads, up to 5.0GHz, 12MB cache)
- Intel Core i7-1365U (10 cores/12 threads, up to 5.2GHz, 12MB cache)
- Intel Core i5-1340P (12 cores/16 threads, up to 4.6GHz, 12MB cache)
- Intel Core i7-1360P (12 cores/16 threads, up to 5.0GHz, 18MB cache)
- Intel Core i7-1370P (14 cores/20 threads, up to 5.2GHz, 24MB cache)
All available CPUs are processors typically found in thin and light laptops, and they all have a hybrid design with a mix of performance and efficiency cores. All four U-series CPUs have two performance and eight efficiency cores; they only differ in clock speeds. The U-series CPUs are the best option for light productivity tasks like text processing, web browsing, video playback, and spreadsheets. The Core i7s with faster clock speeds will deliver a snappier desktop experience, but the difference is small. If you have a more demanding workload, like programming or music production, then you’ll want to upgrade to one of the P-series CPUs, which have more cores and, more specifically, performance cores. The Core i5-1340P and i7-1360P have four, while the Core i7-1370P has six. The P-series CPUs run at a higher wattage of 28W, which will considerably shorten the battery life.
