So I received my MM I7 today and ran tests that are important to me, all revolving around FCP X. My late 2015 iMac has an I5 3.3, 24 Gigs RAM & a Radeon R9M395 with 2 gigs RAM. My MM has an I7, 16 Gigs RAM & I'm using the onboard graphics. So here are my results, all revolving around a 1 minute SDR 4K clip and a 1 minute 4K HLG/HDR clip. I repeated each test 3x and averaged the results. I should also note that I never saw the processor or RAM maxed out:
2015 IMac with a 1 minute SDR 4K clip:
Straight export of the project to H264- 0:53
Export via Compressor H264-H264 (no conversion)- 1:23
Export via Compressor H264>H265- 3:07
HLG/HDR export via Compressor H265>H265- 17:42
Mac Mini with the same 1 minute SDR 4K clip as above:
Straight export of the project to H264- 0:54
Export via Compressor H264-H264 (no conversion)- 2:03
Export via Compressor H264>H265- 1:16
HLG/HDR export via Compressor H265>H265- 16:52
So for me, these results are disappointing. My workflow would almost exclusively revolve around the first and last scenarios. I'd either export the H264 timeline straight, without using Compressor, or export an HLG/HDR project via Compressor. The times for the first scenario are virtually identical. Although the performance of the HLG/HDR scenario is a bit better, it's hardly breathtaking.
Unfortunately the biggest difference in favor of the MM is converting H264 to H265 via Compressor, a scenario I don't use. I'm not sure how any of these results would improve with an Egpu, but these are the results thus far with what I have. I have no idea why the older iMac did better in the Export via Compressor with no conversion.
My current thinking is that if I were to buy an Egpu, my total cost would rise to near $2800...and that's without a monitor. I'm currently using the HDMI input on my 27" 4K HP All-In-One computer. It works well, but it's not what I'd use as a long term solution with the MM. So factoring in a monitor, my cost would now rise to the neighborhood of $3,200. I'm not even factoring in a keyboard & mouse. At this point I'd rather wait for the next iteration of the iMac. Apple allows you to trade in your current computer and mine is worth close to $600.
Of course for others this use case doesn't apply, but for me it is what it is.
2015 IMac with a 1 minute SDR 4K clip:
Straight export of the project to H264- 0:53
Export via Compressor H264-H264 (no conversion)- 1:23
Export via Compressor H264>H265- 3:07
HLG/HDR export via Compressor H265>H265- 17:42
Mac Mini with the same 1 minute SDR 4K clip as above:
Straight export of the project to H264- 0:54
Export via Compressor H264-H264 (no conversion)- 2:03
Export via Compressor H264>H265- 1:16
HLG/HDR export via Compressor H265>H265- 16:52
So for me, these results are disappointing. My workflow would almost exclusively revolve around the first and last scenarios. I'd either export the H264 timeline straight, without using Compressor, or export an HLG/HDR project via Compressor. The times for the first scenario are virtually identical. Although the performance of the HLG/HDR scenario is a bit better, it's hardly breathtaking.
Unfortunately the biggest difference in favor of the MM is converting H264 to H265 via Compressor, a scenario I don't use. I'm not sure how any of these results would improve with an Egpu, but these are the results thus far with what I have. I have no idea why the older iMac did better in the Export via Compressor with no conversion.
My current thinking is that if I were to buy an Egpu, my total cost would rise to near $2800...and that's without a monitor. I'm currently using the HDMI input on my 27" 4K HP All-In-One computer. It works well, but it's not what I'd use as a long term solution with the MM. So factoring in a monitor, my cost would now rise to the neighborhood of $3,200. I'm not even factoring in a keyboard & mouse. At this point I'd rather wait for the next iteration of the iMac. Apple allows you to trade in your current computer and mine is worth close to $600.
Of course for others this use case doesn't apply, but for me it is what it is.