Hardware for Lightroom 5

Wich hardware is needed especially for rendering preview in Lightroom 5, latest version 5.x. Last week I had a download of 500 RAW-files and it took aproximately 3hrs to render the previews in LR5. So I'm thinking about anew Mac, but I want to know if I need fast graphic hardware, processors speed or a lot of working memory (?)
Tahnk you or answering
Michael

Hi Michael.
Want you want is an i7 4-core processor with (obviously a motherboard to match), plenty of RAM 16 GB would be my recommendation.
6-core processors don't play nicely with Lightroom currently.
If you are just using Lightroom and not Photoshop then any old graphics card will do.
Get yourslef an SSD for the OS and applications.
Conventional 7200 rpm internal HDD's are fine for the catalog and images.
Tony Jay

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