CPU for handbrake (4k UHD) and image editing ($200 - $400)

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linuxuser
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CPU for handbrake (4k UHD) and image editing ($200 - $400)

Post by linuxuser » Sun May 26, 2019 1:38 pm

I want to build a new system especially for handbrake and darktable using Ubuntu. The system should be "good" for coding "4k / UHD" videos and for 36MP image editing with darktable.

Normally I buy cpus for about $/€ 200, but it looks like there is no chance to get a reasonable cpu at this price. So I decided to spend more money, but not more than $400. Don't know for sure, but I think it should be an 8core and 1 core should have 3GHz minimum for programms which do not support multicore.

There is also spectre, meltdown a.s.o which makes everything slower. I don't care about AMD or Intel, encoding time is, what counts.

Thanks for your suggestions.

rollin_eng
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Re: CPU for handbrake (4k UHD) and image editing ($200 - $400)

Post by rollin_eng » Sun May 26, 2019 1:48 pm

Looks like the i7 9700k can be had for $400.

Should be pretty good for encoding.

linuxuser
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Re: CPU for handbrake (4k UHD) and image editing ($200 - $400)

Post by linuxuser » Sun May 26, 2019 6:52 pm

What do you think about these cpus compared to the i7 9700k?

AMD Ryzen Threadripper 1900X, 8x 3.80GHz
AMD Ryzen Threadripper 1920X, 12x 3.50GHz

I have read somewhere, that too much cores reduce the quality. How many cores are ok?

How much faster would be encoding with an AMD Ryzen Threadripper 1950X. Well, this cpu would be too expensive too me, but it would be interesting how much faster it gets.

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s55
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Re: CPU for handbrake (4k UHD) and image editing ($200 - $400)

Post by s55 » Sun May 26, 2019 7:09 pm

I'd hold off until July for Ryzen 2 before investing in Threadripper.

linuxuser
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Re: CPU for handbrake (4k UHD) and image editing ($200 - $400)

Post by linuxuser » Sun May 26, 2019 10:45 pm

No problem to wait, but I doubt it is a good idea to use a brand new cpu with an old linux kernel.

nhyone
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Re: CPU for handbrake (4k UHD) and image editing ($200 - $400)

Post by nhyone » Mon May 27, 2019 1:36 am

linuxuser wrote:
Sun May 26, 2019 6:52 pm
I have read somewhere, that too much cores reduce the quality. How many cores are ok?
Perhaps here? Request for (cpu-)benchmarks :lol:

TL;DR
With this test file, I got 379.1 MB with 4 threads, but 395.0 MB with 40 threads, using x264 slower preset.

Using more cores do not reduce quality, it just reduces encoding efficiency. This is for x264. It may or may not be true for x265.

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