I'm running Hitfilm Express 2017 on a Lenovo 320s laptop with 8gb ram, i5-8250u and geforce 920mx. I've undervolted the cpu and increased the max Watt in an attempt to make it run higher clock speeds. The 8250u base speed is 1,6ghz, boost is 3,4ghz. But I'm getting poor performance, and I'm not able to utilize cpu/gpu simultaneously.
A few examples. All drivers are latest version.
A 52sec video. Two 1080p/30fps composite clips reduced to 50%, covering 50% of the screen running in parallell. The rest of the screen is static text and white background.
1.1 gpu 920mx, time 11m30secs, cpu 1,6ghz almost the entire time.
1.2 gpu uhd620, time 7m30s, cpu at 2.8-3.2ghz most of the time
A 5m50sec film. All video 1080p/60fps composite. Quite a bit of static images and text, a 15sec sequence of 3 video clips in parallell and 3 clips of text tracking a point.
2.1 gpu 920mx, time ~30m, cpu at 1.6 almost all the time
2.2 gpu uhd620, time ~1h30m, cpu at about 3.0ghz and 25% load.
A 2m30s simple edit. 30s of static white bakground and text. 1min raw 1080p/30fps clip, 1min 1080/30 composite clip with text.
3.1 gpu 920mx, time 10m, a few reapeated 3ghz boosts, mostly 1.6ghz
3.2 gpu uhd620, time 7m, mostly cpu at 3ghz
Same project as 3. Adding auto color/lightFlares/contrast, sharpen, color balance to the composite clip. Transition and fade between all audio/video.
4.1 gpu 902mx, time 33m. First ~60% done in 6mins. High cpu freq, low load.
4.2 gpu uhd620, time 32m. First ~60% done in 6mins. High cpu freq, low load.
When exporting simple clips, like static background with text and raw 1080p/60fps clips, the UHD620 performs better than the 920mx. I'm assuming it's because the overall system temperature is lower with the UHD620, which allows the cpu to operate at a higher temperature. I've undervolted the cpu by 0,105V, that helps with the UHD620, but it makes no difference with the 920mx. Is there any way I can optimize the hardware performance on my laptop to run above base cpu speed while taking advantage of the gpu with the extra ram?
If not then I plan to get a dekstop/tower PC. And I guess I need some advice on how to balance cpu/gpu. My budget is limiting me to AMD Ryzen 5 1600 or Intel Core i5-8400.