Want to upgrade old Lenovo idea center k450.

I have an old Lenovo idea center k450, this model came out in 2013 and I bought mine in 3/14. It was great when I got it, but I haven't used it in a few years due to very loud noise it was making... I recently moved and took it with me, cleaned it out (so much dust!) And reset it when it wouldn't take any of my passwords. It no longer makes any noise, my guess is dust build up caused it, though it doesn't make much sense to me.

I've gotten a few new games and Xbox game pass, because I bought an Xbox one s last year, and this computer is having issues. The biggest issue it has is Forza horizon 4, which has its own benchmark test. The GPU is the bottleneck, 14fps, everything else is around 100fps capable, the test claims. I've tried running catzilla benchmark test, because it's free, but it crashes at the same test, which is the one after the you render test, I forget the name of it. It never gets over 30fps at 720 resolution or whatever.

So, base specs as listed on the best buy website:

Processor: Intel core i5 4th Gen, 3.1ghz base and 3.2ghz boosted.

Ram: 8gb ddr3. Claims it's expandable to 32gb. I want to add another 8gb stick.

Gpu: Nvidia GeForce GT 635, 2gb. This thing sucks...

It has "3 pci express x1", I don't know what that means.

Storage: 1tb data hd (7200rpm). I want to boost storage as well, it has another spot the same size as the one this uses.

I've looked around for parts, I've found...

Gpu: gigabyte Nvidia gt 1030 of 2g for $89, and msi GeForce GT 710 2gb for $53. This is the price range I'm working in, trying to keep it under $100 and get the best I can.

Ram: looks like the only option on Amazon is Patriot viper, around $25 for one stick, around $50+ for 2.

Storage: Samsung 860 Evo 500gb 2.5 inch sata 3 internal ssd. $58. 1tb for $88

I'm not sure what's going to work best with this setup. These are simply what I've found that appeal to me in price and features. I know nothing about modern GPUs.

As far as usage, I mostly game and watch video. I also browse the internet, but that isn't intensive on this computer. I just want to maintain decent fps with 720/1080 resolution. I want at least 30fps on more intense games. Forza is currently unplayable even on lowest settings, even fallout 4 doesn't want to run on highest settings anymore. I used to run every game at Max settings and furthest rendering distances I could choose and had no issues.

I should note I don't play many games expect for freebies and game pass games. I don't play much in the way of competitive games, especially shooters, but I'd like to be able to. I'm not expecting any miracles from this machine. I do plan on building a new computer, but not for at least another year or so unless this machine kicks the bucket beyond repair or costs for upgrading exceed a new build. Which I guess everything is serviceable and upgradable in this thing?

Sorry for the undoubtedly huge wall of text, I just wanted to make sure I got as much information into this post as possible. Feel free to make recommendations, the parts I've found are simply what I've found. I don't want to spend more than $250-300 total. If I get 3fps from spending an extra $50, I don't want it. I want budget performance that will hopefully last at least a couple years more.

Thank you for your time.

Also, I'm only running a 720p TV at the moment, but I don't care about anything above 1080.

Submitted by BigByLarge | #Specialdealer Special Offer Online Shopping Store 2016