AMD Ryzen 7 6800U Efficiency Review - Zen3+ beats Intel Alder Lake

[Ben29]

This is bogus.. everyone knows last 5% perf takes 20-30% more power. Power efficiency tests should be done when we have tests doing exactly same work... the faster processor will idle faster and save battery... notebook check needs to send their author to some computer science 101 class

Its much worse then that... Look up the Whisper mode numbers.

The CPU loses 50% performance but it using ~233 a 250% less power. The main reason being that the CPU is forced to use reduced frequency and thus better performance.

The race for faster and faster frequencies just kills performance. Wait for Zen4 and enjoy the s*** show that 5.5Ghz will become. People expecting that TSMC 5nm its 20% power saving compared to 7nm, are in for a rude awaking when a 5.5Ghz mobile CPU will be more power hungry, despite the advanced node power saving. Sure, you will gain maybe 15% performance from the higher frequency but you will be spending easily another 300% of power draw on that 4.7 -> 5.5Ghz range.

That is the problem when CPU's are made with desktop first strategy, where power is not a issue. Need more power? Well, just increase the TDP target to 170W ( Zen 4 ) or like Intel 240W+. And then try to downscale that same technology down to mobile platforms.

Apple their M1's are this efficient because they are designed for a mobile platform first, where you need to first look at each feature, what power does it use and what benefit does it give you. Unlike our PC platform, where its first what performance does it give and that is it. Because benchmark winning is more important then power saving, as our world waste energy everywhere. 70W ~ 100W idle PC's, no problem. That is what PC's used to do, when fully loaded on ancient nodes!!! A lot of our performance has come at the cost of power. And lets not look at NVIDIA/AMD GPU's with NVIDIA wanting 600W power connectors for their GPU's. Insanity!

[Sparkyte]

What is this? Did you measure the draw from the wall? The M1 perf TDP is entirely off.

Just saying... do not get me wrong.

[_MT_]

What is this? Did you measure the draw from the wall? The M1 perf TDP is entirely off.

Since the article talks of package and core power, it's self-reported. There is no way you could measure that at a wall.

[_MT_]

The CPU loses 50% performance but it using ~233 a 250% less power. The main reason being that the CPU is forced to use reduced frequency and thus better performance.

You mean better efficiency. It actually stems from the fact that lower frequencies allow you to use lower voltage which modern CPUs can exploit. And saying things like 250% less power is just ridiculous, no offence. What in the world that means? That the processor is making electricity? You mean 64 % of performance for 43 % of power which improves efficiency by 50 %.

[litetaker]

Ummm... you compared Zen3+ to just the P-cores in the Intel CPU for the efficiency test?? Did I get that right? So the E-cores, you know the efficiency cores, are irrelevant for an efficiency comparison?

[Ssgsdhgzzfhczxvvvc]

Why do you only emphasize the difference between 6000 series and Intel and not also the fact that 6000 series is worse in efficiency than the 5000 series zen 3 from AMD???

[Andreas Osthoff]

Ummm... you compared Zen3+ to just the P-cores in the Intel CPU for the efficiency test?? Did I get that right? So the E-cores, you know the efficiency cores, are irrelevant for an efficiency comparison?

Hi, that's not quite right. For the single—core tests, applications will automatically use the faster P-cores.

All cores are active in multi-core tests anyway, so the efficiency cores are included there.

[wtf]

Are you kidding me? Is it AMD payed bullshit? Or ya just f... amateurs?
You should compare 6800U w-mode vs 1260p running on E-cores only w/o turbo vs m1(m2) E-cores only. It's easy as f... Just google howto cinebench e-cores only. also 1260p zenbook has "whisper" mode too!
And show us "whisper" mode frequency, please.
i guess m2 will be 10 times more efficient than 6800u and 3x 1260p

[wb]

Still no review after all this time ?...