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AMD is not behind at all. Have you seen the latest benchmarks? https://www.phoronix.com/review/apple-m2-linux/15 https://www.phoronix.com/review/apple-m2-linux

AMD is not behind at all. Have you seen the latest benchmarks? https://www.phoronix.com/review/apple-m2-linux/15 https://www.phoronix.com/review/apple-m2-linux/15

free652 4y ago
It's behind, looks like they are comparing the high end 5900hx with the low end m1 in multi core tests.
- Tsarbomb 4y ago
  As the other reply mentioned they are testing against the M2, and they are also testing the lower powered AMD part 6850U which does best the M2 in some tests. Not sure why you came out so strong with such a false statement.
- KaoruAoiShiho 4y ago
  Dunno what you're talking about it's definitely the M2 in the test. It's also the same price.
ceeplusplus 4y ago
5900HX TDP: 35-80W depending on boost setting. Most gaming laptops set it at 60W+. M2 TDP: 20W
- kimixa 4y ago
  Power use tends to scale non-linearly past a point - disabling turbo modes would likely significantly reduce the peak power use, and ~18% performance differenceis pretty big buffer to lose. The 6850u also beats it rather comprehensively according to those same results, and that's only 18-25w. Really, you'd need everything power normalized, and even the rest of the hardware and software used normalized to compare "just" the CPU, which is pretty much impossible due to Apple and their vertical integration - which is often a strength in tests like this.
- KaoruAoiShiho 4y ago
  The 6850U is comparable in power use and still has a big perf gap against the M2 in mosts tests. Though there are some tests where the M2 leads with a big gap too so maybe it comes down to software in a lot of these. Still it seems to me like Apple is not leading.
  - ceeplusplus 4y ago
    It is not, the laptop tested with the 6850U has a 30W PL2 and 50W PL1.
    - KaoruAoiShiho 4y ago
      I don't know where you got those numbers. That it can sometimes hit higher peaks is a good thing and shouldn't be counted against it. https://www.phoronix.com/review/ryzen7-6850u-acpi/6 https://www.phoronix.com/review/ryzen7-6850u-acpi/6 According to this it should be an average of 19.3 Watts with a peak of 31.85 Watts. Apple also exceeds the stated tdp during peaks as well but we don't have that information atm. And remember there's a 14% perf gap between the two. My purpose isn't really to say AMD is definitely better since apple still probably takes the win in overall product, I think the MBA is thinner and that's important to me. But it's to show that x86 isn't behind in performance and that you're not making sacrifices in that department to maintain software compatibility with the x86 ecosystem. No sacrifices imo, AMD is just fine.
      - ceeplusplus 4y ago
        That average is over the entire benchmarking suite, including single thread tests and when tests are loading from disk or otherwise not fully saturating the CPU. Some of those benchmarks in that power consumption number are GPU only! Take a look at the AOM AV1 power consumption graph (https://openbenchmarking.org/result/2208044-NE-6850U700026&sgm=1&sor https://openbenchmarking.org/result/2208044-NE-6850U700026&s...), it clearly displays huge drops when the test stops running. The CPU is turboing to 30 watts in 75% of the run. If you use the 15W hard cap performance numbers (low power mode), performance drops 20-40%. > Apple also exceeds the stated tdp during peaks as well but we don't have that information atm We actually do. Notebookcheck recorded 20W usage on a peak MT load (https://www.notebookcheck.net/Apple-MacBook-Air-M2-Entry-Review-A-very-good-but-too-expensive-daily-MacBook.636637.0.html#toc-5 https://www.notebookcheck.net/Apple-MacBook-Air-M2-Entry-Rev...). The MBA is fanless so it's physically impossible for it to substantially exceed that amount without frying your lap. > And remember there's a 14% perf gap between the two Like I said, power is not equal at all. > x86 isn't behind in performance and that you're not making sacrifices in that department to maintain software compatibility with the x86 ecosystem Comparing the lowest end chip from one vendor to the highest end chip from another is not exactly a great look. Especially when the Arm chip is basically matching the x86 one while having only a few years of software optimization work.

AMD is not behind at all. Have you seen the latest benchmarks? https://www.phoronix.com/review/apple-m2-linux/15 https://www.phoronix.com/review/apple-m2-linux/15

free652 4y ago

It's behind, looks like they are comparing the high end 5900hx with the low end m1 in multi core tests.

Tsarbomb 4y ago
As the other reply mentioned they are testing against the M2, and they are also testing the lower powered AMD part 6850U which does best the M2 in some tests. Not sure why you came out so strong with such a false statement.
KaoruAoiShiho 4y ago
Dunno what you're talking about it's definitely the M2 in the test. It's also the same price.

ceeplusplus 4y ago

5900HX TDP: 35-80W depending on boost setting. Most gaming laptops set it at 60W+. M2 TDP: 20W

kimixa 4y ago
Power use tends to scale non-linearly past a point - disabling turbo modes would likely significantly reduce the peak power use, and ~18% performance differenceis pretty big buffer to lose. The 6850u also beats it rather comprehensively according to those same results, and that's only 18-25w. Really, you'd need everything power normalized, and even the rest of the hardware and software used normalized to compare "just" the CPU, which is pretty much impossible due to Apple and their vertical integration - which is often a strength in tests like this.
KaoruAoiShiho 4y ago
The 6850U is comparable in power use and still has a big perf gap against the M2 in mosts tests. Though there are some tests where the M2 leads with a big gap too so maybe it comes down to software in a lot of these. Still it seems to me like Apple is not leading.
- ceeplusplus 4y ago
  It is not, the laptop tested with the 6850U has a 30W PL2 and 50W PL1.
  - KaoruAoiShiho 4y ago
    I don't know where you got those numbers. That it can sometimes hit higher peaks is a good thing and shouldn't be counted against it. https://www.phoronix.com/review/ryzen7-6850u-acpi/6 https://www.phoronix.com/review/ryzen7-6850u-acpi/6 According to this it should be an average of 19.3 Watts with a peak of 31.85 Watts. Apple also exceeds the stated tdp during peaks as well but we don't have that information atm. And remember there's a 14% perf gap between the two. My purpose isn't really to say AMD is definitely better since apple still probably takes the win in overall product, I think the MBA is thinner and that's important to me. But it's to show that x86 isn't behind in performance and that you're not making sacrifices in that department to maintain software compatibility with the x86 ecosystem. No sacrifices imo, AMD is just fine.
    - ceeplusplus 4y ago
      That average is over the entire benchmarking suite, including single thread tests and when tests are loading from disk or otherwise not fully saturating the CPU. Some of those benchmarks in that power consumption number are GPU only! Take a look at the AOM AV1 power consumption graph (https://openbenchmarking.org/result/2208044-NE-6850U700026&sgm=1&sor https://openbenchmarking.org/result/2208044-NE-6850U700026&s...), it clearly displays huge drops when the test stops running. The CPU is turboing to 30 watts in 75% of the run. If you use the 15W hard cap performance numbers (low power mode), performance drops 20-40%. > Apple also exceeds the stated tdp during peaks as well but we don't have that information atm We actually do. Notebookcheck recorded 20W usage on a peak MT load (https://www.notebookcheck.net/Apple-MacBook-Air-M2-Entry-Review-A-very-good-but-too-expensive-daily-MacBook.636637.0.html#toc-5 https://www.notebookcheck.net/Apple-MacBook-Air-M2-Entry-Rev...). The MBA is fanless so it's physically impossible for it to substantially exceed that amount without frying your lap. > And remember there's a 14% perf gap between the two Like I said, power is not equal at all. > x86 isn't behind in performance and that you're not making sacrifices in that department to maintain software compatibility with the x86 ecosystem Comparing the lowest end chip from one vendor to the highest end chip from another is not exactly a great look. Especially when the Arm chip is basically matching the x86 one while having only a few years of software optimization work.