Render boost by system overclocking. Why?

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Zay
Licensed Customer
Posts: 1129
Joined: Sun Jan 17, 2010 2:53 am

I noticed with the new Octane benchmark that I can get better scores by overclocking my PC system in the bios. Going from "Normal" to "Performance" in the bios, raise my scores from 198 to 211 on a GTX 1080 Ti.
To verify there was actually a speed gain I tested it again on one of my own scenes. Render time dropped from 139 to 132 seconds. It was a pure rendering test, so compiling the scene was not a part of it.

Is this speed gain because of a higher CPU clock ? Anyone with similar experience?
Win 11 Pro | i5 12600K | 32GB ram | 2x GTX 1080Ti + 3080Ti - studio driver 560.94| Modo/Blender/ZBrush/Daz/Poser
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bepeg4d
Octane Guru
Posts: 10461
Joined: Wed Jun 02, 2010 6:02 am
Location: Italy
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Hi Zay,
since from v3 the frame buffer has been moved to RAM and managed by CPU, it seems quite normal to me that you see a little bit of better performance with oc settings.
Obviously, you need to consider the general temperature of the system during long rendering sessions.
ciao beppe
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