12GB of ram is not enough for 2 GPU's and GPU acceleration. You really need more ram for that. I would also suggest increasing the ram besides cc_merchant's comments on the Disk setup. I would try setting the Nvidia control panel to just use 1 GPU for acceleration and select the primary. Then see if the performance changes much. Even though both GPU's are not used for playback just enabling the 2nd will still lock down ram for the 2nd GPU.
Thanks guys for your hints, I think I'm gonna go for desktop with the new purchase.
But still, I wonder if I should be able to use one of mentioned above effects, to apply it to one short clip (10s), than render it and use a new version. Now, after applying my playback is almost freezed, but cpu works around 70% and ram much less. I'm asking because as I said there are people with i5 and 4/8gb ram and it seems like they can use some effects.
Eric - I will check what will be result with what you have suggested.
Is there anybody with simmilar machine maybe, so I could compare what other can do with own computer?
THx and regards
...first of all.....a 5400 rpm disk is BELOW spec for operating PPro. A minimum TWO 7200 rpm drives are required, and even THAT is a bare minimum. For now, you should replace your drive with a Crucial M550 SSD...just clone your existing drive onto it. Next, increase the system RAM to the maximum allowed....however, Windows 7 64bit Home Premium allows only a maximum of 16GB....hopefully, that is the version that you have. You can also download MSI Afterburner and CAREFULLY apply an overclock to the GPU memory clock.....monitoring the GPU temperature to make sure it stays low...below 67C should be OK.
The RIGHT thing to do would be to "shoot the works" and get a new Haswell E 5960X desktop system like the one Eric is using to provide the new test results !!! It is so new and powerful, it should "future proof" you for at least SIX MONTHS !!!!