My 3950x works great for what I do….but I’m having trouble wrapping my head around some data that seems non-intuitive…
I do a lot of video transcoding from ISO to MKV and in the past I’ve had an I7-5960x HEDT which I replaced six months ago with an AMD 3950x.
I tried various OC methods but never came up with anything that made sense – my baseline has comfortable power and temps and every OC would massively increase power and temps while only increasing throughput a few percent – not a good tradeoff for a machine that might run continuously for days at a time.
In any case, I’ve settled with ‘AUTO’ settings for everything other than DOCP for my RAM on my ASUS Crosshair VIII Formula motherboard. The interesting results I see (repeated multiple times) involve running a single Handbrake encode instance versus two concurrent encode instances. Also, these averages are from several to 12+ hour timeframes.
SINGLE HANDBRAKE INSTANCE
The part that challenges my logic is – with two instances I get:
I do a lot of video transcoding from ISO to MKV and in the past I’ve had an I7-5960x HEDT which I replaced six months ago with an AMD 3950x.
I tried various OC methods but never came up with anything that made sense – my baseline has comfortable power and temps and every OC would massively increase power and temps while only increasing throughput a few percent – not a good tradeoff for a machine that might run continuously for days at a time.
In any case, I’ve settled with ‘AUTO’ settings for everything other than DOCP for my RAM on my ASUS Crosshair VIII Formula motherboard. The interesting results I see (repeated multiple times) involve running a single Handbrake encode instance versus two concurrent encode instances. Also, these averages are from several to 12+ hour timeframes.
SINGLE HANDBRAKE INSTANCE
TWO CONCURRENT HANDBRAKE INSTANCES69C - CPU Package Temp
1.250v – CPU Vcore
140w – CPU package power
4026 – CPU clock
60% - CPU utilization
I realize that with the single instance, voltage, temp and clock speed is increased due to lighter loading of cores – this is expected Ryzen behavior.62C – CPU Package Temp
1.104v – CPU Vcore
141w – CPU package power
3832 – CPU clock
98% - CPU utilization
The part that challenges my logic is – with two instances I get:
My brain keeps saying it isn’t logical to get more work done without more power and with lower temps and voltages…23% MORE work done (measured by output completed)
Lower average CPU temp
Lower average CPU voltage
Same average CPU power consumption