stay with current cpu or upgrade cpu/motherboard?

iSoLateD1

Distinguished
Sep 10, 2009
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Here is my system:

Core i7 860 2.8ghz
p55
gtx 770
850 w psu

would upgrading to a i5 4760k and a z87 motherboard help game performance? I have a 120hz lcd and game at 1080p. Grid 2 does 75 fps om 1080p maxed settings. Would it do any better on a haswell cpu/motherboard? Thanks.