How does a Radeon R7 450 compare with a Radeon HD 7770 GHz Edition?

MountainDrew329

Honorable
May 28, 2013
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I'm interested in an upgrade to my current system which is a Lenovo Ideacentre K410 with a Pentium G645 2.9 GHz and I've swapped out the ram for 2x4GB Kingston HyperX DDR3-1600MHz and the GPU with a Radeon HD 7770 GHz edition. I put together the whole thing for like 500 bucks a few years ago and it has served me decently since then but now it's just getting a little old.

I'd like to buy/build a computer that could play Playerunknowns's battlegrounds and similar games with medium or high settings at 60fps.

I was tempted by this HP tower on Best Buy.
http://www.bestbuy.com/site/hp-refurbished-pavilion-desktop-intel-core-i5-16gb-memory-amd-radeon-r7-450-1tb-hard-drive-hp-finish-in-twinkle-black/5901221.p?skuId=5901221

From what I see the specs are decent and I wanted to know how the included GPU stacks up against my current GPU (since I know the processor is better for sure).

Is this Radeon R7 450 a decent card or would I need to buy an upgrade? (I was thinking maybe a 1050ti eventually)