I'd compare this to say the 950 on GPUBOSS.com
If lag is an issue you need to move to at least 4 or more times the power of the 750 ti.
Then again, someone complained and they had Vista with 1GB RAM.
I have a gtx 750 ti with a amd fx 6300
I go on low settings on gta 5 but still continue to receive lag. It might be my monitor because I use a hdtv as a monitor. It does not have a game mode btw

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