I made some comparison timings for the 4 Tb Fandom 7200 RPM USB 3.0 External Hard which can be purchased on amazon.com here
Amazon product ASIN B00A0HZUB2[1] . When installed, the Xbox One allowed 3.6 Tb of available storage from the hard drive. This drive has a flashing blue LED that can be blocked off with electrical tape. It gets quite warm, but that is to be expected from a fanless drive in an aluminum case.
Product Manual:
http://www.micronet.com/support/manuals/GForce3_USB3_Manual_102110.pdf[2]
All times are calculated starting from the Games & Apps screen on the Xbox One Home screen and were closed out from the Quit option after pressing the Menu button on a windowed game screen. Some of the times are broken down from start up to reaching the Main Menu and others are from start up through going to the Main Menu then into loading an actual singleplayer or multiplayer game. My less than desirable bandwidth speed may also affect some of the multiplayer loading times.
Unless otherwise noted, I did not skip any opening cutscenes or logos animations so times can be cut even further for both internal/external by skipping these loading screens.
Dead Rising 3
Internal:
1:12 - Reach the Main Menu
2:07 - Continue Story and load from game Start Up.
External:
Test #1:
0:49 - Reach the Main Menu
1:23 - Continue Story and load from game Start Up.
Test #2:
0:51 - Reach the Main Menu
1:23 - Continue Story and load from game Start Up.
Test #3:
0:45 - Reach the Main Menu
1:20 - Continue Story and load from game Start Up.
Plants vs Zombies: Garden Warfare:
Internal:
1:10 - Reach the Main Menu from Start Up.
2:04 - Join a Welcome Mat Multiplayer Game from Start Up.
External:
Test #1:
1:03 - Reach the Main Menu from Start Up.
1:54 - Join a Welcome Mat Multiplayer Game from Start Up.
Test #2:
1:03 - Reach the Main Menu from Start Up.
1:45 - Join a Welcome Mat Multiplayer Game from Start Up.
Test #3
1:04 - Reach the Main Menu from Start Up.
1:58 - Join a Welcome Mat Multiplayer Game from Start Up.
Watch Dogs:
Continue game during a mission from start up.
Internal: 2:24
External:
Test #1: 1:48 * had to sign into Ubisoft servers @ Main Menu
Test #2: 1:42
Test #3: 1:41
Battlefield 4
Internal:
0:27 - Reach the Multiplayer Main Menu from start up.
1:12 - Spawn into a Quick Match game from start up.
External:
Test #1
0:32 - Reach the Multiplayer Main Menu from start up.
1:31 - Spawn into a Quick Match game from start up.
Test #2:
0:22 - Reach the Multiplayer Main Menu from start up.
1:14 - Spawn into a Quick Match game from start up.
Test #3:
0:21 - Reach the Multiplayer Main Menu from start up.
0:59 - Spawn into a Quick Match game from start up.
Titanfall:
Titanfall can take a while to find an open game so I didn't time joining a game as it would be hard to get a consistent recording over multiple attempts.
Internal:
0:51 - Reach the Main Menu.
External:
Test #1:
0:44 - Reach the Main Menu.
Test #2:
0:47 - Reach the Main Menu.
Test #3:
0:45 - Reach the Main Menu
Halo: Spartan Assault
Starting a singleplayer game on Mission A-1.
Internal:
0:50
External:
Test #1: 0:43
Test #2: 0:41
Test #3:40
Worms Battlegrounds
Skipped Opening Cutscene after announcer says Hello.
Internal
0:50 - Reach the Main Menu.
1:22 - Load first level of Campaign from game start up.
External
Test #1:
0:45 - Reach the Main Menu.
1:15 - Load first level of Campaign from game start up.
Test #2:
0:44 - Reach the Main Menu.
1:15 - Load first level of Campaign from game start up.
Test #3:
0:44 - Reach the Main Menu.
1:15 - Load first level of Campaign from game start up.
Zoo Tycoon:
Continue with saved game from game start up.
Internal:
1:42
External:
Test #1: 1:28
Test #2: 1:28
Test #3: 1:26
