Off-Topic Discussions

Hey there
i got a question for you guys

i've been looking around for a budget system upgrade for my current system
now i've come up with this:

My Current System

E8500 Core 2 Duo @ 3.3GHz (Default = 3.16GHz)
Asus P5Q Pro Motherboard (DDR2, 2xPCI 16, 775 Socket)
9800GT 512 MB (Spec's: Link)
2 Gig of Kingston DDR2 Ram (800Mhz)
750Watt PS

Now after my upgrading done over the time from now till may
it will ook like this:

Intel Core 2 Quad Q9650 3.0 Ghz (< Default)
Asus P5Q Pro Motherboard (DDR2, 2xPCI 16, 775 Socket)
SI ATI Radeon HD 6950 2048MB (Link)
Kingston HyperX 4 GB DDR2 1066Ghz (2 Units of 2048MB each)
750Watt PS

now , i was wondering , will this upgrade be sufficient to last me for another 1.5 / 2 years , Lagg Free gaming?
and by lagg free i mean , decent frame rate, i do not expect to run games maxed out in 1 year or so

Feedback?
~Infinity