PC help

Do you have a SSD? If not, that's your upgrade.

Your CPU is more than strong enough, 2nd gen i7's still have no trouble playing games.

yeah i would prefer a new GPU and maybe RAM and a ssd

More RAM would be the best upgrade, no need to change CPU and GPU, as they're still pretty powerful.

It depends on what you do on the computer really..

Get RAM + GPU. 1070 is like my dream GPU, it's way too damn good.

An SSD on the other hand, would make absolutely no difference in terms of gaming except faster loading times.

What's your PSU anyway?
Because if you have a cheap one, getting a better one should be the top priority.
Cheap PSUs usually aren't true to their advertised power, and might not have many protections.

Don't upgrade from a 4770K. I mean, if you're gonna sell the 4770K and other hardware for like 60% of what you paid for it or something, okay. But otherwise, full-price upgrade with no remuneration from the replaced hardware, modest as heck increase in performance. Why?

I do recommend getting more RAM, though. 8GB isn't #$%^ anymore.

If you don't have SSD, upgrade your hard drive to SSD is the best step. PCI SSD will be even faster than SATA.
After that, I will recommend upgrade the GPU to 1070 because there is very few improvement in gaming by upgrading your memory from 8GB to 16GB, if there is no budget concern.
You might also want to replace your power supply if you upgrade your GPU.

if you play in Full HD (1920x1080) - gtx 1070 is overpowered, gtx 1060 would be enough

Your idea is good, yes. 16 GB memory should be enough for a while, and the CPU can handle that GPU and most likely the two next series as well. Don't worry about the PSU, it will cover the needs (a 500 W one would).

gtx 1060 is 2x faster than your gtx 770 - https://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_1060/26.html
and you can buy more RAMs on saved money

8gb of RAM is more than enough for gaming, at least for the moment. And your CPU is really powerful. In your place, I'd just go for a GPU (assuming that your PSU can handle it).

that CPU is more than enough for current games, 16GB would be nice, most games do use the extra ram, and also makes your PC all smooth and nice :P, and if you have the money for a 1070 then go for it.

I wouldn't upgrade anything yet. If you want better performance in games and want to spend the money, then just upgrade the GPU.

Do you have an i7-4770 or an i7-4770k. If you have the k version, I would suggest buying a decent aftermarket cooler and overclocking it. The coolers are cheap and you should be able to easily overclock it between 4.2 and 4.5 Ghz with an air cooler. I would double check, but I think your motherboard supports overclocking, you may just need the latest bios version.

CPU is fine, you really don't need the latest generation if you are not concerned about the lesser TDPs of the latest/next gen. If you really want to upgrade, then get the 1070. 8gb RAM is good enough for most games, adding another 8gb is recommended for future titles.

sigh why do people not get the K series of CPUs? You could be getting a huge performance boost for free by overclocking. (in other words, spend the little extra and get the K next time lol). I ran a 2500K (3.3GHz) overclocked to 5.0GHz for several years before upgrading recently. :X

I'd go with the GPU first on that rig, then the RAM. Both are still fine for now, but if you must upgrade, that's where I would start. CPU tech isn't progressing as fast as GPU tech right now, and your 4770 isn't much behind the current tech. As long as your motherboard has all the features you want, you're golden. If you're only gaming in 1080p, it might be worth checking out the 1060 and AMD's 480X. They're both pretty ballsy at 1080p and a fair bit cheaper than the 1070.