BTW, i will be using Premiere Pro CC.
Just make sure that you do not get the Entry Level Power suppy.
"525 watts wide-ranging, active Power Factor Correction, 85% Efficient,
with no 6-pin graphics power cable"
They have a 700 watt unit which would support one GPU. If you can get the big power supply without any graphics card then you would add your own GTX 970 or GTX 980 it would be a good deal. Maybe you would have to get a graphics card, get the cheapest one you can and pull it, sell it and have a decent low-end NLE machine.
You asked for opinions, so here goes!
Your old system was absolutely a beast when it was born. The new Z440 your are considering is by comparison several steps down HP's chain from their current flagship workstation the Z840. Speed wise, I would expect the newer PC to outperform the old system, but not by much. Too, it will likely be quieter, but if you are moving your GTX 780 Ti to the new system, then for renders that require both CPU and GPU crunching the video card will definitely be moving some air (and making some noise).
1) Have ADK build you a screaming fast, quiet i7-5960x system that can turbo up to 4.4 GHz. This would be my suggestion to you.
2) Get the more expensive HP Z840 model. Populate it with the same 64GB as you suggested (8x8GB) and start with a single CPU (e5-2687w would be my first choice, e5-2667 would be fine as well and very close to your previous selection with the e5-1680 Xeon). I like the roomier boxes - tend to be quieter and much more expandable. This would also allow for you to add a 2nd CPU later on if you wanted more speed. (8x8GB sticks allows you to have a single or dual CPU).
3) I personally prefer Dell's T7910 over the Z840 if you are set on going with one of the "big" manufacturers. It has even more PCIe expansion options and both air/liquid cooling options for the CPUs.
Thank you Jim.
I did not think about moving the GTX 780 Ti to the new machine, you cannot do that it only can use a 225 watt maximum GPU and the 780 Ti is 250 Wats and only has two 6-pin power cables but the 780Ti requires one 6-pin and one 8-pin.
Thanks for your answers!
@Bill: Yes, i will use the 700w power supply and i will use the GTX 980. (700w i standard while the 525w is optional) I will made a custom order with HP and will order it without any graphic card.
I bought the Z440 but bought it with the 6-core E5-1650v3 instead of the 8-core E5-1680v3 and put in 32GB RAM, MSI GTX 980, Samsung 850 Pro 1TB SSD´s, Samsung 840 Pro SSD´s, and one