Value wise, the A10 already has a decent IGP that could somewhat substitute for a graphics card. However it's IGP is already obsolete from a gaming perspective and needs very fast (and expensive) RAM to get the most performance from it, something on the order of 2133 MHz or faster.
DDR3-2400 is not expensive. Where did you get that idea? Case in point:
(both 2x4gb kits)
G.Skill Sniper DDR3-1600 CAS 9:
$71.99
G.Skill Ripjaws X DDR3-2400 CAS 11:
$66.99 + s/h.
Call it cherry-picking if you want, but discount DDR3-2400 is out there.
The only real headache is finding dual-rank DIMMs, which, while not mandatory, is desirable.
What is your budget? Instead of the A10, you could get an Athlon 860K for around $100 and put the savings into a good dedicated graphics card.
The 860k does not cost $100, at least not in the US anyway. Amazon has it for
$84.29.
That aside, the upcoming 7650k will basically be a 7700k for ~$100, which will be a great deal, especially if/when a majority of software will be capable of using the iGPU for somethingorother. I would not look seriously at the 7800, and really, with the prices falling on 384 shader Kaveri chips, the 860k isn't looking that great either.