Question bout 2nd sreaming PC

[Heetee]

Hello guys, 

 

I was looking at the video "what kind of PC do you need for streaming" and I was like "cool I have an old i5 build lying around" but theres no dedicated GPU in it. In the vid they say that in some case you wont need one but all the capture cards Ive looked need some minimum dedicated GPU in the specs list.

 

What is important to me:

 

1- no latency on the gaming PC (most important point!!!)

2-1080 at 60 fps

2- I only do PC (no console)

 

my gaming rig:

i7-4790k

Nvidia geforce gtx 1070 (msi aero)

16gb ram ddr3

ASRock Motherboard H81M-HDS R2.0

 

my (possible?) streaming pc:

I5-4460

*no dedicated gpu*

8gb ram ddr3

Acer TC 605 mobo

 

I was initially looking to buy a Razer Ripsaw for the capture card.

 

I thought giving a second life to my old tower was nice but it's not mandatory. What are my options? Is there a specific type of capture card that will fit my need? Would buying an old used GPU with the Ripsaw a good option? Is my i5 too old to be of any uses?

 

Please help me and thanks in advance for your advices.