Live data from Hacker News

10-core i9-10900F desktop CPU lags behind 8-core Ryzen 9 4900HS mobile APU

notebookcheck.net

11–20 of 148 posts

Re: 10-core i9-10900F desktop CPU lags behind 8-core Ryzen 9 4900HS mobile APU

#11
post #3

this doesn't quite pass the smell test. I can't quite tell if there's a way to filter out results from overclocked parts in geekbench, but it looks like these results for the i9-10900F are significantly lower than typical results for a stock i9-9900K. hard to believe they would do worse on the same process with more cores.

It also doesn't pass the smell test in that the single core performance is higher than the Ryzen 4900 and it also has both more cores and more threads yet it is far behind on multicore performance? Likely some thread affinity issue that just needs a patch.

At the turbo clock the i9-10900F is 5GHz vs. 4.3Ghz for Ryzen 9 4900HS. At the base clock the i9-10900F is 2.8GHz vs. 3GHz for the Ryzen 9 4900HS.

Basically implies that Ryzen has better performance per watt, which doesn't affect absolute performance until you exhaust the power budget and have to lower the clock speed, i.e. use all the cores instead of just one.

edit: 4900HS, not 4900H

Re: 10-core i9-10900F desktop CPU lags behind 8-core Ryzen 9 4900HS mobile APU

#12
post #3

this doesn't quite pass the smell test. I can't quite tell if there's a way to filter out results from overclocked parts in geekbench, but it looks like these results for the i9-10900F are significantly lower than typical results for a stock i9-9900K. hard to believe they would do worse on the same process with more cores.

It also doesn't pass the smell test in that the single core performance is higher than the Ryzen 4900 and it also has both more cores and more threads yet it is far behind on multicore performance? Likely some thread affinity issue that just needs a patch.

Multithreaded applications tend to share a lot of data between threads, and we already know Intel's mesh fabric core interconnect[1] seems to be inferior to AMD's chiplet+io die in terms of performance and access latency uniformity.

[1] used in all 10core+ Intel CPUs.

Re: 10-core i9-10900F desktop CPU lags behind 8-core Ryzen 9 4900HS mobile APU

#13

Earlier quoted context omitted.

It is worth noting that this is the i9-10900F, not the i9-10900k (thank you, Intel, for the lovely naming scheme). I'd expect the -k variant to be at least as fast as the i9-9900k.

Also, 9900 was much easier to say... how do you pronounce 10900? "Ten-thousand-nine-hundred"? Feels tortured. "Ten-nine-hundred"? Yeesh.

Ten-Nine Hundred is what I've seen on YouTube recently and I like it.

Re: 10-core i9-10900F desktop CPU lags behind 8-core Ryzen 9 4900HS mobile APU

#14
post #3

this doesn't quite pass the smell test. I can't quite tell if there's a way to filter out results from overclocked parts in geekbench, but it looks like these results for the i9-10900F are significantly lower than typical results for a stock i9-9900K. hard to believe they would do worse on the same process with more cores.

[deleted]

Re: 10-core i9-10900F desktop CPU lags behind 8-core Ryzen 9 4900HS mobile APU

#15

Earlier quoted context omitted.

It is worth noting that this is the i9-10900F, not the i9-10900k (thank you, Intel, for the lovely naming scheme). I'd expect the -k variant to be at least as fast as the i9-9900k.

Also, 9900 was much easier to say... how do you pronounce 10900? "Ten-thousand-nine-hundred"? Feels tortured. "Ten-nine-hundred"? Yeesh.

Tenty nine hundred duh

Re: 10-core i9-10900F desktop CPU lags behind 8-core Ryzen 9 4900HS mobile APU

#17
post #3

this doesn't quite pass the smell test. I can't quite tell if there's a way to filter out results from overclocked parts in geekbench, but it looks like these results for the i9-10900F are significantly lower than typical results for a stock i9-9900K. hard to believe they would do worse on the same process with more cores.

It is worth noting that this is the i9-10900F, not the i9-10900k (thank you, Intel, for the lovely naming scheme). I'd expect the -k variant to be at least as fast as the i9-9900k.

good point, I was confusing the F-suffix with the KF-suffix parts, which usually perform identically to K-suffix parts.

Re: 10-core i9-10900F desktop CPU lags behind 8-core Ryzen 9 4900HS mobile APU

#18
post #3

this doesn't quite pass the smell test. I can't quite tell if there's a way to filter out results from overclocked parts in geekbench, but it looks like these results for the i9-10900F are significantly lower than typical results for a stock i9-9900K. hard to believe they would do worse on the same process with more cores.

It also doesn't pass the smell test in that the single core performance is higher than the Ryzen 4900 and it also has both more cores and more threads yet it is far behind on multicore performance? Likely some thread affinity issue that just needs a patch.

this part isn't quite as hard for me to believe. intel cores are less efficient than amd cores, so they have to downclock more when more cores are loaded.

Re: 10-core i9-10900F desktop CPU lags behind 8-core Ryzen 9 4900HS mobile APU

#19

I'm really hoping apple puts these AMD mobile chips in their next MacBook Pro. At the moment I'm not seeing much reason to upgrade from my 2015 model, but if I could have 8 cores, that would a different matter...

If apple ever switches CPU supplier for their macbooks, it'll probably be for their own.

Re: 10-core i9-10900F desktop CPU lags behind 8-core Ryzen 9 4900HS mobile APU

#20

I'm really hoping apple puts these AMD mobile chips in their next MacBook Pro. At the moment I'm not seeing much reason to upgrade from my 2015 model, but if I could have 8 cores, that would a different matter...

If apple ever switches CPU supplier for their macbooks, it'll probably be for their own.

I guess they could buy AMD. Not that it would make any sense. :-)
Post reply on HN