Hi, my current specs are as follows,
Intel core 2 Quad Q8400 2.66 processor w/4mb L2 cache
Asus P5Q (Green) P45 LGA775/FSB1600MHZ/DDR2
Kingston hyper-X 4GB DDR 2
Asus 9600GT 512MB DDR3 PCI-E
Asus 500W power supply P-50GA
Am I able to just upgrade the motherboard, processor and RAM only to a better setup that is able to run multiple photo editing programs with the ability to multi task with other on going office programs, mp3 players, etc.. Without getting major lag time.
Suggest you save the money and just max out the ram at 8GB, that C2Q CPU/motherboard combo is actually already fairly capable of handling what you require. Can get the RAM/CPU(if super cheap, Q9550 like mine) 2nd hand from the IT Garage Sales sub-forum. What's your current HDD? Considered upgrading to a SSD for better boot/software-loading/response times?
My Rig on my right, also a C2Q CPU--->
Going strong after 5 years, with incremental upgrades
Assuming you go the 2nd-hand RAM/CPU route, & your existing 4GB RAM is already a 2x2GB kit.
IIRC Kingston HyperX DDR2 2 x 2GB 1066 kit 2nd hand about $50,
Q9550 $50 - $60
Total: $110
Still have remainder $290 for SSD
Xtra $145 Plextor M5S brand new
Still got leftover $145!