Don’t bother doubling your ram. Add 1GB if you want, but unless you are running XP-64 bit (not likely), your machine probably won’t even boot to Windows with 4 gb installed. XP 32 bit, which 99% of us have, will see 3GB but that’s it.
Rather, I would suggest going to NewEgg or similar, and just upgrading your processor. $279 will get you the q6600 QUAD core; it’s Socket 775 just like your e6600(check to make sure your Motherboard is compatible with Quad Core cpu’s) Video rendering benefits from extra cores more than anything. Extra 1 GB of memory? Sure, but if it were me, I’d drop in a Q6600. See Tom’s Hardware CPU chart(https://tinyurl.com/2nzqrt) The Q6600 beats the E6600 on a Cinema 4D render by OVER 2 MINUTES. If your motherboard supports it and you’re comfortable “getting under the hood”, you can easily clock the Q6600 up to 3.0ghz, making it a total screamer. I’m actually looking at building a 2nd machine based on the Q6600 and only using it for After Effects and audio/video editing.
Improviz in SF