will this all fit well with the motherboard?

Hello! I am building a new pc and I have all the parts chosen now, the only thing that I have a question about is if all the parts will fit/connect well with the mobo. I've looked at it but I'm still not sure if everything will fit. Thanks in advance

here's what I am buying

CPU: Intel Core i5-3470 3.2GHz Quad-Core Processor ($199.99 @ Newegg)
Motherboard: ASRock H77 Pro4/MVP ATX LGA1155 Motherboard ($87.55 @ Newegg)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($52.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($84.99 @ Newegg)
Storage: Samsung 840 Series 120GB 2.5" Solid State Disk ($99.99 @ Newegg)
Video Card: Sapphire Radeon HD 7870 XT 2GB Video Card ($244.99 @ Newegg)
Case: Corsair 400R ATX Mid Tower Case ($89.99 @ Newegg)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($70.98 @ Newegg)
Optical Drive: Samsung SH-224BB DVD/CD Writer ($15.99 @ Newegg)
Monitor: Acer S231HLbid 23.0" Monitor ($139.99 @ Newegg)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($99.99 @ Newegg)
Other: TP-LINK TL-WDN4800 Dual Band Wireless N900 PCI Express Adapter,2.4GHz 450Mbps/5Ghz 450Mbps, IEEE 802.1a/b/g/n,WEP, WPA/WPA2 ($29.99)