i have problem with high temperatures too
i7 4770k
air cooling: fortis he 1225
motheroard: z87-g43 MSI last bios 1.6
xfx 750 powersuply
case: gladius M40
i didnt OC processor.
all tests with opened case and all fans on (2 front 120 and 1 back 120)
termal paste is MX-4
i was reapply paste 3...