yeah, a faster video card, particularly if you want to use any shader mods. I find my 7970 struggles with the heaviest shader mods, only get around 40fps. a gtx970 would fix that i recon. But for vanilla minecraft that setup is more than enough. I cant help but think its not a very balanced build though. The cpu > gpu power ratio is out of wack. You would find better overall frames if you dropped to a lower tier cpu and put that money toward a faster gpu. Also, a $150 keyboard but only a $99 video card........ a bit of a facepalm moment when i saw that....and again with a 750ti yet your pairing that with a 144hz monitor....
PCPartPicker part list:
http://pcpartpicker.com/p/YgGHbv
Price breakdown by merchant: http://pcpartpicker.com/p/YgGHbv/by_merchant/
CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($229.77 @ OutletPC)
Motherboard: ASRock Z97 Anniversary ATX LGA1150 Motherboard ($88.99 @ SuperBiiz)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($76.97 @ OutletPC)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($49.99 @ SuperBiiz)
Video Card: Zotac GeForce GTX 970 4GB Video Card ($309.99 @ Best Buy)
Case: Corsair 230T Windowed-BLUE ATX Mid Tower Case ($74.99 @ Amazon)
Power Supply: SeaSonic 620W 80+ Bronze Certified Fully-Modular ATX Power Supply ($49.99 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($18.75 @ OutletPC)
Operating System: Microsoft Windows 8.1 - 64-bit (OEM) (64-bit) ($89.98 @ OutletPC)
Monitor: Asus VG248QE 144Hz 24.0" Monitor ($271.99 @ Amazon)
Wireless Network Adapter: Asus PCE-N10 802.11b/g/n PCI-Express x1 Wi-Fi Adapter ($9.79 @ SuperBiiz)
Keyboard: Cooler Master CM Storm Devastator Gaming Bundle Wired Gaming Keyboard w/Optical Mouse ($27.95 @ Newegg)
Total: $1299.15
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-12-27 02:37 EST-0500
Have given you a much better gpu and a better psu, just by removing the uberkill mouse and keyboard and a moderately priced, but still decent, motherboard, for slightly less price.