5800x with no boost clock needs only 0.750v for 3.8ghz.

[Tired9]

And runs at a toasty 33c max under Cinebench scoring 12244 points.

I mean if you are serious about being as efficient as you can... I did this by mistake.

 

[KompuKare]

So, any idea what your power usage was during that?

A quick google has a 5800X at 15,500ish so you scored around 79% of that. So in terms of perf/watt you might have had very impressive results.

I do wish there was a site like undervolting-hardware.net which concentrated on these kind of results: "The Undervolter's Guide and Results for current GPUs and CPUs" would be a nice thing to have.

 

[Tired9]

So, any idea what your power usage was during that?

A quick google has a 5800X at 15,500ish so you scored around 79% of that. So in terms of perf/watt you might have had very impressive results.

I do wish there was a site like undervolting-hardware.net which concentrated on these kind of results: "The Undervolter's Guide and Results for current GPUs and CPUs" would be a nice thing to have.

23 amps according to HW monitor.

 

[KompuKare]

23A * 0.75 is around 17W. Pretty impressive gain in perf/watt there.

 

[Journey]

If that wattage figure is correct then most of that power draw is the IOD, so I would think that isn't included in the measurement. I could see it at 35w like the 5700GE, even though that is monolithic.

 

[DeliciousStorage]

23A * 0.75 is around 17W. Pretty impressive gain in perf/watt there.

A 5800X will draw more than 17w at idle.

 

[KompuKare]

Yes, most hw info programs would list CPU Package and CPU Cores so the 17W is probably excluding the package.

Still pretty impressive IMO.

Now the question then is: at 0.75v and 3.8GHz would the 5800X or the 5700G be ahead? Or is 0.75V and 3.8Ghz a distraction and the real measure should be the complete power usage where the APU should gain with a more frugal Package power, then the results would be more about how important double the cache is for a particular program.

 

[DeliciousStorage]

And runs at a toasty 33c max under Cinebench scoring 12244 points.

I mean if you are serious about being as efficient as you can... I did this by mistake.

A 5700G is much better if you care about efficiency due to it being monolithic, the chiplet design on the x chips consume a lot of extra power especially under low loads and idle. Also your Cinebench score doesn't seem right because my 5700G gets 12665 at 3.8Ghz.

Spoiler: Cinebench Score

Spoiler: Power Consumption

 

[Cyber-Mav]

Zen3 going over 4ghz starts to pull the wattage. Im sure someone on this forum done extensive testing when the CPUs first came out.