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My 7800X3D gets 2833, with an average package power of ~28W over the ST/MT benchmarks. https://browser.geekbench.com/v6/cpu/2986403 https://browser.geekbench.c

My 7800X3D gets 2833, with an average package power of ~28W over the ST/MT benchmarks. https://browser.geekbench.com/v6/cpu/2986403 https://browser.geekbench.com/v6/cpu/2986403 I can probably squeeze a bit more out if I boot to linux and cap the TDP for the MT tests. I'm not saying the Apple silicon isn't impressive, but the 7640U (or any Phoenix silicon) isn't positioned as premium silicon like Apple's stuff. AMD would be using a wider bus, more on-die L3, faster packaged RAM, their TSV L3 or something like that if it was.

schmorptron 3y ago
Did you undervolt / clock it, or is that stock behaviour?
- brucethemoose2 3y ago
  Its undervolted, but it doesn't make a difference in ST tests because (without bus overclocking) its hard capped at 5GHz. I am running good RAM, and some laptops run soldered LPDDR5X which is also very good. DDR5 SODIMMs are unfortunately not so good, as they need 1.35V to run at awful timings/speed.
  - schmorptron 3y ago
    Oh, interesting. Are the new dell CAMM modules better in that regard?
    - brucethemoose2 3y ago
      Supposedly, yes: https://www.anandtech.com/show/21069/modular-lpddr-becomes-a-reality-samsung-introduces-lpcamm-memory-modules https://www.anandtech.com/show/21069/modular-lpddr-becomes-a... Honestly I hope they come to desktops and servers too. The performance of full size ddr5 dimms seems OK for now, but it must be close to its limit if SODIMMs are already past their limit.
      - schmorptron 3y ago
        Oh wow, LPCAMM sounds like a dream! According to the article this form factor is incompatible with normal CAMMs, let's hope that gets figured out and standardized before long. (And actually gets applied throughout the market!)
ksec 3y ago
OK Zen 4, AMD 7800X3D, 5.04Ghz, Single Core GB6 Score @ 2833. Apple A17 Pro, 3.8Ghz, Single Core GB6 Score @ 2914 The reason why Phoenix were chosen was because of power saving and TDP figures. If 7800X3D were using 28W on single core, the A17 Pro was using ~5W.
- smoldesu 3y ago
  sigh Look: Apple fabs good cores. As a matter of fact, they're pretty much the only company even attempting to make ARM cores. They have lots of money, and good designs on dense silicon usually equals fast chips. This is a brutally facetious comparison though. Nevermind the obvious ARM/x86 disparity, or even the node difference in fabrication; you're not even comparing mobile cores to each other. What kind of serious comparison takes desktop wattages and compares them to a smartphone SOC? If you take the chip the parent mentioned (7640U) instead of picking a random desktop option, the gap closes considerably. 7640U scores 2559 in single-core, which scales very well for multicore workloads. Given that it's a 6-core chip with a 30w max TDP, a single core probably couldn't draw more than 5w either.

schmorptron 3y ago

Did you undervolt / clock it, or is that stock behaviour?

brucethemoose2 3y ago
Its undervolted, but it doesn't make a difference in ST tests because (without bus overclocking) its hard capped at 5GHz. I am running good RAM, and some laptops run soldered LPDDR5X which is also very good. DDR5 SODIMMs are unfortunately not so good, as they need 1.35V to run at awful timings/speed.
- schmorptron 3y ago
  Oh, interesting. Are the new dell CAMM modules better in that regard?
  - brucethemoose2 3y ago
    Supposedly, yes: https://www.anandtech.com/show/21069/modular-lpddr-becomes-a-reality-samsung-introduces-lpcamm-memory-modules https://www.anandtech.com/show/21069/modular-lpddr-becomes-a... Honestly I hope they come to desktops and servers too. The performance of full size ddr5 dimms seems OK for now, but it must be close to its limit if SODIMMs are already past their limit.
    - schmorptron 3y ago
      Oh wow, LPCAMM sounds like a dream! According to the article this form factor is incompatible with normal CAMMs, let's hope that gets figured out and standardized before long. (And actually gets applied throughout the market!)

ksec 3y ago

OK Zen 4, AMD 7800X3D, 5.04Ghz, Single Core GB6 Score @ 2833. Apple A17 Pro, 3.8Ghz, Single Core GB6 Score @ 2914 The reason why Phoenix were chosen was because of power saving and TDP figures. If 7800X3D were using 28W on single core, the A17 Pro was using ~5W.

smoldesu 3y ago
sigh Look: Apple fabs good cores. As a matter of fact, they're pretty much the only company even attempting to make ARM cores. They have lots of money, and good designs on dense silicon usually equals fast chips. This is a brutally facetious comparison though. Nevermind the obvious ARM/x86 disparity, or even the node difference in fabrication; you're not even comparing mobile cores to each other. What kind of serious comparison takes desktop wattages and compares them to a smartphone SOC? If you take the chip the parent mentioned (7640U) instead of picking a random desktop option, the gap closes considerably. 7640U scores 2559 in single-core, which scales very well for multicore workloads. Given that it's a 6-core chip with a 30w max TDP, a single core probably couldn't draw more than 5w either.