Hello I hope you guys might be able to help me. My old computer fried so I bought a refurbished one at new egg. The problem is when I'm watching movies or videos it takes a long time to buffer, it's slow, I don't play games just watch movies on Netflix and YouTube. Should I buy a new computer with a better processor or just buy more RAM? I have listed my computer specs below. Thank you for the help
Dell Inc. OptiPlex 780
System Service Tag: JJ4MZL1 (support for this PC)
Asset Tag: LSE505231
Chassis Serial Number: JJ4MZL1
Enclosure Type: Mini-Tower
Board: Dell Inc. 0C27VV A00
Serial Number: ..CN1374001F04PR.
Bus Clock: 1333 megahertz
BIOS: Dell Inc. A14 08/21/2012
Slot 'DIMM_1' has 2048 MB
Slot 'DIMM_3' has 2048 MB
Slot 'DIMM_2' has 2048 MB
Slot 'DIMM_4' has 2048 MB
3.00 gigahertz Intel Core 2 Duo E8400
64 kilobyte primary memory cache
6144 kilobyte secondary memory cache
64-bit ready
Multi-core (2 total)
Not hyper-threaded