Hey all, I want to upgrade my PC. I use it for editing videos and use programs such as Sony Vegas, Adobe products and Cyberlink. I have trouble editing larger projects and begin to lag, freeze and skip frames. I have built this PC little by little over the past few years so have many different PC parts ranging from 1-4 years old. I am looking to spend $100-200 range on the first upgrade and want to know what is the next part/parts I can improve the most performance. Any help is much appreciated and thanks in advance! This is what I currently have Windows 7 Home Professional/64 bit 16 GB Ripjaw Series Ram 21XX AMD Phenom x4 965 Processor 3.40 GHz Radeon HD 7970 HIS IceQX2 XFX PRO750W Core Edition 80+ Bronze ATX 750 ASUS M5A97 R2.0 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard