Where to improve performance for video editing (not rendering)

[Dirtypitches]

What would be the best upgrade I could make to improve editing performance in Premiere/After Effects? (Rendering time is not as important)

Should I add ram, another SSD, 2 HDDs for a RAID, etc...

Projects will be mostly around 20 GB but my SSD doesn't have a lot of work room on it as it has my system/programs on it.

Thanks!

NZXT SWITCH 810 Full Tower Chassis
NZXT HALE90 80 Plus Gold 750 Watt Power Supply with Modular Cable HALE90-750-M
Corsair Vengeance LP 16 GB (2x8 GB) DDR3 1600MHz (PC3 12800)
Intel Core i7-3770K Quad-Core Processor 3.5 GHz 8 MB Cache LGA 1155
ASUS P8Z77-V PRO LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
NVIDIA ASUS GTX 660
Windows 8.1 PRO

 

[Dblkk]

HHD speeds are the #1 limiting factor for video editing and rendering. Whereas rendering the better the cpu/gpu also decreases time. Your setup is great, but I guarantee that your editing time is being limited by the hhd data rate speed of 100mbps. If you want straight up video editing performance, I'd get 3-4 hhd in raid that way you get solid state performance for the same price, yet vastly more storage. SSD are great for speed, but theyre speed is like a 'boost' high number speed, theyre actual consistant speed is more around 300mbps and that fluctuates, whereas hhd give a consistant 100 mbps, and if you add 3 more then your getting around 250-300mbps. But also remember, when your video editing and then producing the final video. If your reading from and writing to the same drive, that total mbps of that drive is then cut in half. Example, total speed 100mbps=read 50mbps/write 50mbps.