Hello, my board cpu support list goes up to the X6800 which is dual core - its an older board will it support the E8600 (which came out after the board I believe) will a quad core work such as QX9770 or the Q9650
the motherboard is the Asrock Dual Vista 775
I wouldn't try to hunt for a Q9xx0 due to their rarity and high costs especially the qx9770 which costs easily around $300 a pop on eBay. I suggest a rebuild with a new cpu and board for around the same cost but much better overall performance.
personally i would say any upgrade to a dual core system that sticks with a dual core cpu is a waste of money. asrock do some really nice but very cheap quad 775 motherboards for around 50bux /35 quid that will support anything up to the top end quads. your board was good when dual core were top dog. and was designed with dual cores in mind... end result no support for quads as that would add cost to what is a cheap brand..
I don't like cheap 775 boards and don't recommend to anyone to buy them. I suggest that you look at all your options and places where you can shop before spending any thing. Cheap low end 775 boards often are the worst as they often don't support the best cpus or are very poor quality. I've learned the hard way on my own dime. I eventually got very lucky on a now rare xfx 780i
Look for a cheap P35 or P45 based Intel board and stay away from anything VIA. You will get much better cpu support, better overall ram support, and far better build quality while providing decent overclocking options.
It's good enough. Highly overclockable. At 4.6ghz it performs 27% better in Cinebench than at stock, add a 10-20% performance increase with Windows 8 and it's good enough. The motherboard has a future for upgrades too and at $200 for the whole platform you can't go wrong.