The only SANITY CHECK that fails here is the processor... as there's no such thing as an Intel Core i7-5130 (the numbers don't follow their SKU standard). It's more likely you have a Intel Xeon 5130 processor... which is a dual core processor with 2.0 Ghz clock speed.
With that clarified, here's the quick rundown...
* Graphics Card: Nvidia GTX 980 -- Aged, but still excellent -- This has an effective performance equivalence of the the GTX 1070... so gaming at 1080p with default settings will pose no problems here. You may even bump up the quality setting if you like & still maintain at least a 60 fps here.
* RAM: 8 GB's -- OK, but may want more -- Your system has the MINIMUM RECOMMENDATION for gaming as many games will want 8 GB's under recommended requirements. If your system can handle it, consider increasing to 12 or 16 GB's. Beyond that would be considered a waste unless you doing major graphics or video editing.
* Processor: Intel Xeon 5130 (dual core, 2.0 Ghz baseline, No turbo) -- POTENTIAL ISSUES, UPGRADE HIGHLY RECOMMENDED -- This is sadly where the performance bottleneck is for your system. Many mid-range games are requiring at least a dual-core processor with the high-end requiring a quad-core.
GTA V (& GTA Online) wants a quad core processor running at 2.4 Ghz for minimum specs.
PlayerUnknown's Battlegrounds (aka PuBg) wants at least an Intel Core i5-4430 (Quad core, base speed of 3.0 Ghz), but it's noted that this game is a bit unoptimized (even for a release title) & is one of the most system-demanding games out there.
If you wish to stay in the Xeon line of processor, you'll have to start looking at the Xeon E3 12xx series, where the versions numbers are one behind the Core iX generations (So a Xeon E3 12xx v6 processor would be comparable to a 7th Gen Intel Core i5/i7 processor)
CONCLUSION: It's the processor alone that will prevent you from playing the major AAA current-release titles.. Even games like Saints Row IV (from 2013) wouldn't be supported as that requires a 2.4 GHz Dual-Core processor (20% more than what your processor can provide). Even No Man's Sky, which only requires a 1st generation Intel Core i3 processor (i3-530; Dual-Core, base speed of 2.93 GHz) would likely grind your processor to a halt.
HOWEVER, Astroneer would be playable on your system as it would meet the minimum requirements (as it only requires a dual core processor running at 2.0 GHz or faster). You would likely be able to handle Minecraft at reduced settings (at the very least, changing graphics from "Fancy" to "Fast" would all that you would have to do to hit acceptable framerates). Terraria & Starbound (which are considered 2D versions of Minecraft) should run acceptably as well.
Please be aware that this is based on the assumption that you noted the processor incorrectly & I'm running on a best-effort match-up (as there's a Xeon 5130 processor & no i7-5730 processor). You will want to double-check the processor (Make & Model ID) & reference it with Intel's website & even Wikipedia to see that you have the correct info. Even having one digit off on the processor model can greatly change things
If it happens to be a Core i7-5930K (which is a 4th generation high-end processor; being a 6-core HyperThreading processor with a base speed of 3.5 GHz & turbo of 3.7 GHz), then all the processor assessments can easily get thrown out the window as you would cover at least the minimum requirements for most modern games. (See what a difference a character or two can make?)
While I hope you double check that processor, I hope this sheds light on the subject.