Advice guys, What would you choose?

Hello there, Im new to forum but had own since 2012 an Alienware X51 R1, i-7 3770, 8GB ram and poorly a gt 640 graphic card. i can't run games at 1080p not even thinking of new gen games at low res and got frustated,i bought a Evga gtx 670 ftw edition but haven't installed yet because i know i wont still be able to run games for long and my upgrade capabilities are gone with the x51 after that. So decided I'll get another pc instead.But, can't decide which of these two.
First a Ibuypower Chimera here are the specs:
Case 1 x Chimera Inferno 4SE Gaming Case - Flame
iBUYPOWER Labs - Noise Reduction X
iBUYPOWER Labs - Internal Expansion 1 x iBUYPOWER Internal USB Expansion System + Bluetooth & Wireless N Module
Processor 1 x Intel® Core™ i7 4820K Processor (4x 3.70GHz/10MB L3 Cache) - Intel Core i7 4820K
iBUYPOWER PowerDrive 1 x PowerDrive Level 2 - Up to 20% Overclocking
Processor Cooling 1 x Corsair Hydro Series H60 Liquid CPU Cooling System - ARC Dual Silent High Performance Fan Upgrade (Push-Pull Airflow)
Memory 1 x 16 GB [4 GB X4] DDR3-1600 Memory Module - Corsair or Major Brand **FREE Upgrade to DDR3-1866 ADATA XPG V2**
Video Card 1 x NVIDIA GeForce GTX 780 Ti - 3GB - MSI Twin Frozer Gaming OC - Single Card
Free Stuff 1 x [FREE] - Turtle Beach Z1 Headset - FREE with ALL iBUYPOWER Systems ($29 Value)
Free Stuff 1 x [FREE] - McAfee Antivirus PLUS 2014 - FREE with any System ($49 Value)
Free Stuff 1 x [FREE Game Coupon] - Borderlands: The Pre-Sequel! - Free with purchase of NVIDIA GTX GTX 770, 780, 780 Ti and TITAN Black Video Cards
Motherboard 1 x ASUS P9X79 LE -- 2x USB 3.0
Power Supply 1 x 850 Watt - Corsair RM850 - 80 PLUS Gold, Full Modular
Primary Hard Drive 1 x 2 TB HARD DRIVE -- 64M Cache, 7200rpm, 6.0Gb/s - Single Drive
Data Hard Drive X
Optical Drive 1 x ASUS 12x Blu-ray Reader, DVD±R/±RW Combo Drive - Black
2nd Optical Drive 1 x ASUS 24x Double Layer DVD±R/±RW + CD-R/RW Drive - Black
Media Card Reader / Writer 1 x 12-In-1 Internal Media Card Reader/Writer - Black
Meter Display 1 x AeroCool V12XT Touch Screen Fan, Temperature Control & HDD Working Display
Sound Card 1 x 3D Premium Surround Sound Onboard
Network Card 1 x Intel Pro 10/100/1000 Network Card
USB Expansion Card X
Operating System 1 x Microsoft Windows 7 Professional + Office Starter 2010 (Includes basic versions of Word and Excel) - 64-bit
Keyboard 1 x iBUYPOWER Standard Gaming Keyboard
Mouse 1 x iBUYPOWER Standard Gaming Mouse

And also I love the Origin Genesis and here are the specs:

Orientation: Standard
Standard Color: White
Back to School (FREE SSD must be selected below)
Truly Custom PC's. Want a component that is not on our site? Call or email us and we will include it in your system.
Remote Controlled Multi-Colored LED
ORIGIN High-Performance Ultra Silent Fans - Black
ORIGIN FROSTBYTE 120 Sealed Liquid Cooling System
Intel Core i7 4820K Quad-Core 3.7GHz (3.9GHz TurboBoost)
850 Watt Corsair RM850
Red Individually Sleeved Cables
Single 3GB NVIDIA GTX 780
ORIGIN Professional Graphics Card Overclocking
8GB Corsair Vengeance 1600Mhz (2x4GB)
Genuine MS Windows 7 Professional 64-Bit Edition
FREE 240GB Visiontek Go Drive
1TB ORIGIN PC Approved Hard Drive
5 Bay Hot-Swap Cage
Cryogenic Cooling Support
40-in-1 Media Card Reader
On Board Audio
Onboard Network Port

the Chimera i manage to add way more upgrades for the same the Genesis cost.Both come at almost 2700.I Just want a xtreme pc that will last years and years without updating anything.
Let me know what you guys think and by the way I'm not interested in building a pc by my own.
Thanks in advance