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H.264 & H.265 Video Encoding Beast

by dpriest



Date Published

June 13, 2018

CPU Clock Rate


GPU Core Clock Rate


GPU Effective Memory Clock Rate



I encode 1080P and 4K videos using Vidcoder. This is my first time designing and building my own system. This is an upgrade from my old system which had the Intel i7-4770K processor. I do strictly CPU based encoding which yields excellent video quality but at a cost for speed. At least until enter Threadripper 1950X which solved that problem. I was a little nervous building this in fear of messing something up. I had to remount the cooling block on the cpu a few times and apply just the right amount of thermal compound until my temperatures were good. The Arctic Silver compound works better than the Noctua in my opinion. Normal use temperature is 29C and 56C under full load with all cores 100%.

This site is amazing and I could not have built my system without it. I did my research and the compatibility checker is priceless along with the reviews and resources. And not to mention that everybody is very helpful and likes to contribute.

I do want to mention something else. When I installed Windows 10 on the M.2 drive, I had my other drives attached. This caused a plethora of problems with performance because Windows put the bootstrap file (I think that is what it is called) on the wrong drive. My brand new Threadripper system performed miserably just navigating through Windows and performing simple tasks such as right clicking on a file and taking a long time to respond. When I did a clean install again without the other drives attached that made the difference.

I also am humbled by how cpu intensive and how slow 4K H.265 encoding is. Encoding a 4K .mkv file in Vidcoder (Handbrake) on Medium setting at CQ 20 takes 22 hours with this system. The same encode would take over 3 days with my older system i7-4770K. I also overclocked the Threadripper to 4.0GHz at 1.35 volts. This barely made a difference with the encode time and my temperatures shot up to 85C. I don't understand why so many people are overclocking when in my experience made very little difference with the processor running too hot.

Comments Sorted by:

Nullarc77 2 Builds 1 point 9 days ago


May I ask why you don't have the 1050 in the top PCIe slot? It doesn't really affect performance but it just looks kinda odd.

dpriest submitter 1 Build 1 point 9 days ago

I see your point. The answer is that I have no idea why. I guess when I assembled everything, hit the power button and everything worked correctly I was so psyched I overlooked this.

Nullarc77 2 Builds 1 point 9 days ago

lol. Well the build still looks good. Very clean.

dpriest submitter 1 Build 1 point 9 days ago

I just switched the 1050 to the top slot and it looks much better. I am thinking of moving my 960 EVO to the slot below the 1050. Do you know if that will affect performance or are all the m.2 slots the same?

Nullarc77 2 Builds 1 point 9 days ago

I say leave the 960 where it is because you can actually see it. But no it won't affect performance. Threadripper has enough PCIe lanes to go around.