My friend said it's sucky and not good for casual gaming and will most likely give me bottleneck's. The question I want to ask you is , did I cut big corner's on this mobo? Will it perform just as well as other mobo's and is it ok for casual gaming etc?
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For casual gaming, that board isn't bad; depends on how it's priced. Generally, I would recommend a z77 board over the z68, but your board is a B3 version and lists generation 3 pci-e support.
The board is good.. A z68 is good but z77 is better