Any of the lightweight DEs will help you out: LXDE (which is in the throes of being ported to QT, and I don't currently recommend), XCFE, which has been improved, and MATE, which is a fork of GNOME 2, and is pretty lightweight, and the DE I prefer. No slowdown of games have I seen.

And your English is just fine; it remains the hardest second language to learn, with the possible exception of Turkish.

Thanks, I will try 'em, but just in case you think my PC is old here are my specs:
GTX 660 Ti
I7 - 3770k
8 GB RAM

Quoting: oldrocker99And your English is just fine; it remains the hardest second language to learn, with the possible exception of Turkish.

English is easy, the problem is that I don't like to use/write/speak it :D for me is the easiest language.

Thanks for the reply.

I'm using MATE desktop for over a year now. It's pretty light on resources, very much bug free and stable overall. Cinnamon has also come along nicely in recent months and it's a great candidate for my 2nd DE of choice.

I never had any game freeze my DE. I've used XFCE, KDE, i3, heck even the god awfull gnome3 doesn't freeze.

Might be a problem not related to your DE.

I'm just using Ubuntu Unity, no problems with it, and it's the most supported.

Well thanks everyone for the replies.
I've prove every DE you guys told me, failed stability in all, a game freeze (ex: CSGO, Chilvary, etc.) and I have to do hard reset. Tried other distros (Debian, OpenSUSE and Ubuntu, witch I can say that Ubuntu was the more "stable" ) and the problem still there. I changed my games location from my HDD to another.
My PC components are good, no high voltage or over heat.
I don't know what to do. I have thinking on prove Gentoo or Arch but I don't like the rolling release model.
What you guys think?

PS: Really thankfully for all your help, thanks again :)

Quoting: GuestTry XFCE I have to no problems to play games with it on debian 8 and whats the driver version of your nvidia driver? Try the lastest stable from here http://www.nvidia.com/object/unix.html

Sorry man didn't saw your reply, I tested from the oldstable driver to the beta one and the problem still there.

Thanks.

Quoting: GuestCould be a bad power supply unit, too.

No, 850 Watts for a system that only consumes 650-570 watts.
Thanks anyway

If the problem persists regardless of OS, I'd still put my money on faulty hardware. Doesn't need to be overheating or anything like that, but games and other resource intensive software do expose problems you don't see under normal desktop use. Sometimes the culprit can be really hard to pinpoint, and I speak from experience. The last time this happened to me it took literally months to finally solve. (Turned out that one of the cores in my i7 had stopped working properly for some mysterious reason, resulting in instability when said core came under load.)

Quoting: Modofokus

Quoting: GuestCould be a bad power supply unit, too.

No, 850 Watts for a system that only consumes 650-570 watts.
Thanks anyway

That doesn't mean the power supply cannot be faulty.

That doesn't mean the power supply cannot be faulty.

Well sorry if it was a short answer, but my power supply don't have problems. I tested it no more than 1 week- 5 days ago (voltage, house-to-power energy).
Sorry if I couldn't explain myself.

But I missed one thing to ask.
I have my OS on a SSD (going to 1 year old) and my games on 2 HDD (some age). Can be that a problem with the stability?

I have been a computer technician for over 25 years , I have seen a lot of strange things happening with computers so I will just name a few even though they may sound a bit funny... :P

So about your computer and your distro freezing please check the following :

1. Linux in general is a bit sensitive to overclocking so if you have overclocked your computer you may experience freezing.
Also under clocking your computer it will freeze as well :P

2. Turn off your computer. Unplugged it from the electricity plug for 3-4 minutes.
As strange it sounds it worked for some Linux systems that were very slow or were freezing.

3. We had another strange incident with computer freezing while playing games witch a crackling sound.
Removing the sound card everything was working fine.
Inserting back the sound card computer was freezing again.
The sound card was a very expensive one , we called the manufacturer etc long story and at the end he told us to change the power supply.We were 100% sure that it was the sound card problem because the PSU was tested and was ok ,the power Supply we had was brand new and a good brand,but what a surprise changing the PSU it solved all the problems.

4. Kernel , 4.2 is a very nice and stable Kernel to use and 4.3rc5 is simply amazing according to my tests.

That's all for now... let me know if any of these helped you out...

Quoting: Modofokus

That doesn't mean the power supply cannot be faulty.

Well sorry if it was a short answer, but my power supply don't have problems. I tested it no more than 1 week- 5 days ago (voltage, house-to-power energy).
Sorry if I couldn't explain myself.

But I missed one thing to ask.
I have my OS on a SSD (going to 1 year old) and my games on 2 HDD (some age). Can be that a problem with the stability?

Check your Hardware Rams please:

[http://www.memtest.org/download/5.01/memtest86+-5.01.iso.gz](http://www.memtest.org/download/5.01/memtest86+-5.01.iso.gz)

Test 24 h. Are the Rams OK, then we'll see.

Okey guys I found the problem.
The good news: was the MB causing all the problems with the RAM sockets that are f**ked up.
The bad news: I'll have to trash it... well it was good to play with him... RIP.
Anyways, thanks to all of you guys, I'm really thankfully.

Peace.

PD: If anyone want to know the MB model, it is: GA-Z77X-UD3H rev 1.1