sandy bridge or ivy bridge i5 should do ya skyrim is quite cpu bound ... then a z77 motherboard ... OC only if you feel comfortable doing so, tomshardware is an excellent resource ... reviews from arstechnica, tomshardware hardocp & anandtech are all top notch for helping pick out parts.
for motherboards MSI has been good to me ..gigabyte okay.... ram get ddr3 1600 or better and at least 8gb but 16 would be better its dirt cheap right now.... i have 32 gb running in the vgz minecraft server
what case are you using?
edit : if you can swing the cash for it a 128gb ssd as a boot drive is amazing.. day and night difference ... if not save that for your next upgrade
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minecraft name: hansrotec
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