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> AMD's turbo numbers are also pure fantasy. I'm pretty certain that I remember watching videos from GN, LTT, or Bitwit (can't recall which) where they noted t
by sq_ 6y ago
> AMD's turbo numbers are also pure fantasy.
I'm pretty certain that I remember watching videos from GN, LTT, or Bitwit (can't recall which) where they noted that AMD chips were turboing up to a few hundred MHz above the specced numbers.
- Dylan16807 6y agoThe most recent generation had turbo numbers that were about 100MHz higher than they should be, and it was difficult or impossible to reach the stated number on most chips, especially on launch or near-launch BIOS versions.
- tracker1 6y agoMost came close, but you're right... Of course, Intel's max boost is the same, and unlikely in most consumer systems. The AMD bios's were updated and do get better boosts now, but really in short bursts. That said, they do incredibly well for most circumstances and depending on your use, a much better option at all price points, except for some gaming at the ~$500 mark. I'd still take an R9 3900X over an i9 *900K series. Using a 3950X now, no plans to upgrade for 3-5 years.
- magila 6y agoThose youtubers are measuring "turboing" by looking at the maximum frequency column in HWiNFO. So they consider a CPU to have hit a frequency even if it only touched it for a single millisecond during a minutes long benchmark run. For AMD CPUs the average frequency is typically significantly lower.
- sq_ 6y agoMaybe smaller channels, but I find that most of the bigger ones (especially GamersNexus) put a ton of effort into having a good, repeatable process for in-depth looks at performance. Certainly on par with Anandtech or any of the other typically trusted review sites.
- magila 6y agoOk, now show me the GN video showing an AMD CPU sustaining a turbo frequency "a few hundred MHz above the specced numbers".
- yxhuvud 6y agoYes, that is the nature of turbo. If the CPUs could sustain operating at those speeds, it would be the base speed, not the turbo. Turbo is for really short burst. After that the system ends up being restrained by the available cooling and will go at lower speed (but usually still higher than base).
- magila 6y agoThere's a difference between "might hit the max turbo frequency for a millisecond under light load if the phase of the moon is just right" and "can sustain max turbo indefinitely so long as adequate power and cooling are provided". AMD CPUs are the former, Intel the latter.