This is an excellent HP laptop https://amzn.to/2HfhjJh  with Intel Core i5-8250U Processor, 12 GB RAM and 500 SSD Drive and Windows 10. So plenty of power, memory and speed even if you are dealing with large documents, large spreadsheets and even doing graphics designs using Adobe Illustrator and Adobe Photoshop. if you are wanting to manipulate large graphics then consider a laptop with 24 GB - 32 GB RAM would be better.

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The Intel Core i5-8250U Processor is an 8th Generation Intel® Core™ i5 Processors has 4 cores and 8 threads, meaning it can run 8 processes at the same time hence completing tasks much faster.
 

12 GB of RAM is great for most medium usage of applications. If you are a heavy user, i.e., use very demanding applications like very large Photoshop files, video processing etc, then considering a laptop with more RAM would be beneficial. 

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The SSD drive is excellent for fast processing of files, especially if you are working with large files.