Which card avoiding bottlenecks/overkill?

[Chong Warrior]

Need a new graphics card, pref ATI. Just upgraded my PC and my current motherboard takes both AGP and PCI-E... but my current 9800pro is showing it's age as my PC is struggling to play 1080p movies.

Current Spec:
E6400 @ 2.4ghz
4gb OCZ PC6400 (2x2gb)
640gb WD Black 32mb
600w Enermax Noisetaker
Asrock 4CoreDual VSTA - (AGP x8 & PCI-E x4)
9800pro 128mb AGPx8
Dell S2409W 24" - ( 1920x1080 native res )

Now my motherboard is limited to PCI-E x4 speed, it can't do x16. Also it's not the greatest overclocker and 2.4ghz is the highest it will take my CPU, so I'm thinking it would be useful to choose a GPU with some grunt and onboard HD gubbins? Also needs enough grunt to power my monitor at that res.

I think the Power supply should be fine?

So I was thinking maybe a 4850 would be overkill and a little wasted on this system..? What would be a good card to allow me to watch 1080p movies at their best?

Thanks for any input

 

[Chong Warrior]

Yes I upgraded from XP3200, NF7-S, 1gb RAM. Didn't want to spend anymore money on dead end upgrades so decided on cheap dual core...

Gaming? Maybe a little but I'll probably just stick to the consoles for gaming... I'm not interested in spending big bucks on PC gaming anymore.

Though I'm already thinking it might be worth changing the mobo tbh.