I have my gaming rig set for everything except a motherboard. Motherboard needs to support SLI. Starting with 8GB of RAM and later upgrading to 16 GB i can use either 2 - 4 x 4gb or 1 - 2 x 8GB whichever is better (if any). Case supports up to 11 fans so headers to support this.
My Rig:
Intel i5 4690K
MSI Nvidia GTX 970 (Gaming)
750W EVGA SuperNOVA Bronze 80+
Corsair CMY8GX3M2A2133C11 Vengeance Pro (4gb or 8gb)
1TB HDD/SSDD
250GB SSD (Potentially)
Phanteks Enthoo Pro
Budget is in the £100 - £130 range
Cheers
My Rig:
Intel i5 4690K
MSI Nvidia GTX 970 (Gaming)
750W EVGA SuperNOVA Bronze 80+
Corsair CMY8GX3M2A2133C11 Vengeance Pro (4gb or 8gb)
1TB HDD/SSDD
250GB SSD (Potentially)
Phanteks Enthoo Pro
Budget is in the £100 - £130 range
Cheers