Newegg has the 1.0 TB Samsung Spinpoint M8 ST1000LM024 on sale for $90 -18 code "EMCNJNJ26".http://www.newegg.com/Product/Product.a ... 6822152291
This drive is 9½ mm tall, so it will fit into your notebook. The larger/faster drives that are currently available are too tall for many notebooks (15 mm). This is a 5400 rpm drive with an 8 MB cache. Average seek time is 12 ms. Average latency is 5.6 ms.
Even if a mechanical hard-drive is too slow to go into a notebook that only has room for one internal drive (which would of course be an SSD), this could be a good drive to install in a lightweight external USB enclosure for archiving the photos/videos/etc. that won't fit on your SSD.http://www.newegg.com/Product/Product.a ... 6817576016
A 0.75 TB 7200 rpm drive like the Western Digital Scorpio Black WD7500BPKT is $90.http://www.newegg.com/Product/Product.a ... 6822136835
A 1.0 TB SSD is $1000 to $2550.http://www.newegg.com/Product/Product.a ... 6820227797http://www.newegg.com/Product/Product.a ... 6820226360
0.5 TB SSDs are $150 to $600.http://www.newegg.com/Product/ProductLi ... ageSize=50
i7-8700K, H100i v2, RoG Strix Z370-G Gaming, 16 GiB, RX Vega64, 960Pro SSD, 5TB HDD, Define Mini-C, SS-660XP2, C32HG70, RK-9000BR, MX518