Which Gaming Rig should I get and why?

Option 1:

Desktop Specifications
Lifestyle Gaming
Condition New
Operating Systems Windows 7 Professional 64-Bit
Colors Black
Platform PC
Orientations Allowed Vertical
Form Factor Mid-Tower
Bays 4 - 5.25" Drive Bays
1 - 3.5" Drive Bay
Internal Bays 5 - 3.5" Drive Bays
Available 3.5" Drive Bays 4
Available 5.25" Drive Bays 3
PCI Slots (Total) 2
PCI Slots (Available) 2
PCI Express X1 Slots (Total) 2
PCI Express X1 Slots (Available) 2
PCI Express X16 Slots (Total) 2
PCI Express X16 Slots (Available) 0
Memory Module Specifications
Memory Type DDR3
Memory Speed PC3-12800
Memory Speed MHz 1600MHz
Total Memory Size 32GB
Memory Slots (Total) 4
Memory Slots (Available) 0
Memory Configuration 4 x 8GB
Maximum Memory Supported 32GB - 64 bit
Media Ports
PS/2 Connectors 1 - Keyboard/Mouse Combo
USB Ports (Total) 7 - USB 2.0
4 - USB 3.0
Audio Out Jacks 2
Line In Jacks 1
Microphone Jacks 2
DVI Video 2
DisplayPorts 2
HDMI Ports 2
Processor Specifications
Processor Brand Intel
Processor Class Core i7
Processor Number i7-3770K
Processor Speed 3.5GHz
Processor Interface Socket 1155
Hard Disk Drive Specifications
Interface SATA III (6.0Gb/s)
Capacity 2TB
Hard Drive Types Hard Disk Drive
RAID RAID-capable
RAID Modes 0, 1, 5, 10
Optical Drive Specifications
Optical Drive Type SuperMulti DVD±RW Dual Layer
Optical Drives Included 1
Supplemental Drive
Supplemental Media Type Media Reader
Capacity Multi-in-one
Media Types Secure Digital (SD)
Memory Stick Duo
Memory Stick PRO Duo
Mini Secure Digital (Mini SD)
xD Picture Card
Compact Flash Il
Compact Flash I
MultiMediaCard (MMC)
Memory Stick (MS)
Memory Stick Pro (MS-Pro)
T-Flash
Extreme SD
Extreme III SD
Ultra II SD
Ultra II MS Pro
Audio Specifications
Audio Description Integrated Audio
Audio Chipset High Definition Audio
Channels 7.1
Graphics Specifications
Graphics Description Crossfire Mode
GPU/VPU AMD Radeon HD 7750
Video Memory 1GB
Video Interface DVI
HDMI
Display Port
Secondary Graphics Specifications
Graphics Description Crossfire Mode
GPU/VPU AMD Radeon HD 7750
Video Memory 1GB
Video Interface DVI
HDMI
Display Port
Network Adapter Specifications
LAN Data Transfer Rate 10/100/1000Mbps
LAN Description Gigabit Ethernet
LAN Interface Type RJ-45
LAN Ports 1
Power Management
Power 750 Watt
Mouse Specifications
Mouse Type Optical
Wheel
Buttons 3
Scrolling Capability Vertical
Keyboard Specifications
Keyboard Type Standard
Dimensions
Height 18.2"
Width 9.2"
Depth 20"
All-In-One Desktops
Additional Technologies Fan Control Panel



Option 2:

Performance
Processor 3.6GHz AMD FX-8150 Zambezi Eight-Core
Cache L2: 8MB
Chipset Socket: Socket AM3+
Type: AMD 970
Memory Slots: 4x DIMM 240-Pin
Type: DDR3 SDRAM
Installed: 16GB (4x4GB)
Capacity: 32GB
Graphics Card Type: Dedicated
Installed: nVIDIA GeForce GTX 660 Ti with 2GB Dedicated
Storage
Hard Drive Installed: 2120GB (1x 2TB 7200rpm; 1x 120GB SSD)
Type: SATA
Optical Drive Blu-ray ROM with DVD Burning
Drive Bay Expansion Quantity: 4
Size: 5.25"
Type: External
Quantity: 6
Size: 3.5"
Type: Internal
PCI Expansion Quantity: 2
Type: PCIe x16
Quantity: 3
Type: PCIe x1
Quantity: 2
Type: PCI
Inputs/Outputs
Ports 4x USB 3.0 (A)
10x USB 2.0 (A)
Display 1x DisplayPort
1x HDMI
2x DVI
Audio 6x Combo Analog Headphone/Optical Digital Audio Out
Communications
Network 10/100/1000Mbps Gigabit Ethernet (RJ-45)
Wi-Fi None
Bluetooth None
Keyboard & Mouse
Keyboard Type: Full-Size
Mouse USB
General
Operating System Windows 8 (64-bit)
Power Supply 800W
Dimensions (WxHxD) 9.3 x 22.4 x 22.9" / 23.6 x 56.9 x 58.2 cm
Weight 60 lb / 27.22 kg