This is an excellent laptop https://www.muslims-businesses.com/product-page/16g-ram-1tb-500-1000gb-hdd-128g-ssd-15-6-gaming-laptop-i7-notebook with Intel Core i7-4500U Processor, 16 GB RAM and 128 GB SSD Drive plus 1TB (1000 GB) storage 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 this would be the best option to consider.

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The Intel Core i7-4500U Processor is a 4th Generation Intel® Core™ i7 Processors has 2 cores and 4 threads, meaning it can run 4 processes at the same time hence completing tasks much faster.
 

16 GB of RAM is great for most medium usage or even heavy use of applications. If you are a heavy user, i.e., use very demanding applications like very large Photoshop files, video processing etc, then this would be an ideal laptop. 

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The 128 SSD drive is excellent for fast processing of Operating System and Applications. At the same time the 1 TB HDD will provide plenty of storage for files.