My trusty Q6600 build has finally died 
I have long since stopped gaming and am looking to build a general purpose PC. If possible, I would like to focus on quietness and low power than out and out performance.
I need a new mobo/ cpu/ (cooler? have a tuniq tower)/ ram and gfx.
At the moment I have:
Q6600 (overclocked to 3.8ghz)
Tuniq Tower - nice and quiet
Abit IP35 - solid mobo, no real preference on manufacturer
4gb OCZ reaper ram with the funky heatsinks - again not too bothered re 4gb/8gb
Ati 4890 2GB Vapour X - nice and quiet.
What would be the equivalent system today- mid end to lower performance. Budget is around £300 all in (ex VAT), I can push this a bit further if the extra money would give a big gain.
Anyone built something similar recently?

I have long since stopped gaming and am looking to build a general purpose PC. If possible, I would like to focus on quietness and low power than out and out performance.
I need a new mobo/ cpu/ (cooler? have a tuniq tower)/ ram and gfx.
At the moment I have:
Q6600 (overclocked to 3.8ghz)
Tuniq Tower - nice and quiet
Abit IP35 - solid mobo, no real preference on manufacturer
4gb OCZ reaper ram with the funky heatsinks - again not too bothered re 4gb/8gb
Ati 4890 2GB Vapour X - nice and quiet.
What would be the equivalent system today- mid end to lower performance. Budget is around £300 all in (ex VAT), I can push this a bit further if the extra money would give a big gain.
Anyone built something similar recently?