What is a good Internal HDD for recording Gameplay

Hard Drives are tuned for a specific usage and the "color" of the WD drives tells you what it's for... using a HD in a different application is not recommended.

Blue is consumer (target buyer "bang for buck")
Black is performance (target buyer "enthusiast")
Green is economical (low power, performance not important)
Red is for Network Attached Storage (optimized for random I/O)
Purple is for surveillance recording (optimized for continuous write speeds)

We haven't used or installed a HD in a user's box in over 5 years. We did on site benchmark and blind user testing of performance and haven't looked back. OK, ya bought an SSD and it boots in 15.6 seconds instead of that slow HD (7200 rpm) at 21.1, saving you 5 seconds a day. When data or video load off the SSD, SSHD or HD, it really has no effect as the app won't play and you won't use anything faster than it comes off storage. There is a observable difference if you copy / paste 300 GB of files ... but you won't notice if for some reason you like to watch the green line move. Defrags and backups will be faster too, but Im sleeping when that happens.

If you are the sequential type of gamer... you play 1 or 2 games at a time but mostly pay one game thru and then do another, then you will significantly benefit from the SSHD which takes your most frequently used files and stores them on the SSD for fast access... when ya finish that game, those are wiped from the SSD portion after 3 or 4 loads of the new game with the new game's files now in it's place.

You can see the impact in gaming here:

http://www.tomshardware.co.uk/charts/hdd-charts-2013/-17-PCMark-7-Gaming,2915.html

2 TB SSHD = 9.76 MB/s
2 TB WD Black = 6.24
2 TB WD Green = 5.14
2 TB WD Red = 5.10
6 TB WD Purple = 5.21
0.5 TB WD Blue = 4.01 (older model 1 TB model is a lil bit faster)

You can look at how each drive performs in various categories and pick the one9s) that best suit ya needs

http://www.tomshardware.co.uk/charts/hdd-charts-2013/benchmarks,134.html

The 2 TB SSHD is usually about $89 ... the newer one is up to $105 this week.

http://pcpartpicker.com/product/tR2kcf/seagate-internal-hard-drive-st2000dx001
http://pcpartpicker.com/product/NpBrxr/seagate-firecuda-2tb-35-7200rpm-hybrid-internal-hard-drive-st2000dx002

I started using them a bit over 5 years ago.... no failures yet that I have heard about (30+ drives).