Can I do this?

[TheKillerJack21]

Motherboard - ECS KAM1-I (V1.0) AM1 2 x SATA 6Gb/s USB 3.0 HDMI Mini ITX AMD Motherboard
GPU - EVGA 02G-P4-3753-KR G-SYNC Support GeForce GTX 750 Ti Superclocked 2GB 128-Bit GDDR5 PCI Express 3.0 Video Card
CPU - AMD Sempron 2650 Kabini Dual-Core 1.4 GHz Socket AM1 25W SD2650JAHMBOX Desktop Processor AMD Radeon HD 8240
The motherboard has a PCI Express 2.0 and the gpu is a PCI Express 3.0 HELP!

 

[TheKillerJack21]

I know the motherboard and cpu are crap but it is way better than what I have. Also I'm buy this today with gta 5.

 

[Nodyjoe]

What is your budget??? where are you at in the world as prices very? also PCIe 3.0 cards are backwards compatible, so it will work.

 

[TheKillerJack21]

I'm in Wichita Kansas, US

 

[Nodyjoe]

Ok and Budget cause you might be able to get a better processor and MB for the same price.

 

[TheKillerJack21]

My budget is 150$ US, but I have Case, HDD, Ram, and Case Fan

 

[Nodyjoe]

Im asuming the case is mini ITX then right?

 

[Nodyjoe]

PCPartPicker part list: http://pcpartpicker.com/p/nQfHMp
Price breakdown by merchant: http://pcpartpicker.com/p/nQfHMp/by_merchant/

CPU: AMD A6-5400K 3.6GHz Dual-Core Processor ($38.89 @ OutletPC)
Motherboard: Gigabyte GA-F2A68HM-DS2H Micro ATX FM2+ Motherboard ($44.99 @ Micro Center)
Video Card: EVGA GeForce GTX 750 Ti 2GB Superclocked Video Card ($99.99 @ Newegg)
Total: $183.87
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-01-19 22:01 EST-0500

I know its over budget, but you would get better performance and this is also assuming you dont have a mini ITX case.
also the parts you chose have no upgrade paths open since AM1 has long since been outdated.