Live data from Hacker News

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

notebookcheck.net

141–148 of 148 posts

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

#141
post #129

Earlier quoted context omitted.

The machine definitely looks tempting, but based on the mostly failed attempts by Ars Technica to run Linux on it, I had stopped looking at it. But perhaps the kernels they used were too old. Still, for that price, I would expect it to work without issues, as I really would buy it as a Linux machine. How is your experience, Ars had problems with the fans running too high and the battery not lasting as long as it shou…

I generally avoid Ubuntu, but I'm not looking for an out-of-the-box perfect experience, and I like new hardware. The unfortunate reality is that hardware vendors, not OS vendors, provide software support for their hardware. Additionally, Linux is a minuscule portion of the desktop/laptop market, and hardware vendors can't justify dropping as much money on Linux as they do for Windows. Still, plenty of hobbyists are h…

Thanks for your feedback. I would be using Fedora, so a pretty up-to-date distro. I don't mind a bit tinkering, but don't consider sys-admin stuff a hobby :). So I am very keen on reports, how far the support for this hardware is, as it would be bad, if I end up not really being able to use Linux after buying the machine for this purpose.

But your report is encouraging, especially that the fans are not too noisy and the battery runtime is as expected - no laptop runs long when on full steam. But for casual use, the time you are getting sounds good - more than enough. I don't need the ultimate runtimes on battery, as long as it is quite a bit longer than the 2 hours Ars Technica got. So you have me definitely tempted :)

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

#142
post #111
post #85

Earlier quoted context omitted.

Intel's is roughly "the thermal dissipation required to maintain base clock speeds indefinitely without thermal throttling". AMD's is roughly "the thermal dissipation required for all-core turbo indefinitely". In recent generations (since AMD's Zen architecture), AMD is much closer in testing to their published numbers than Intel is. It is important to note that this is a thermal specification, rather than a power co…

>There are processors that exist which can hit their performance numbers without needing any thermal solution, and as such would have an "honest" TDP of 0, despite having a >0 power draw from the wall. Nitpick warning - I assume you mean that they are passively cooled in free air. They are still emitting heat into their environment. If you stuck such a processor into a perfectly insulated container, it would eventual…

This is correct.

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

#143

Earlier quoted context omitted.

No, Nvidia Optimus is still an unsolved problem in Linux. Vegas run fine tho.

Unsolved, but with exciting new progress. I've gotten PRIME running on my new ROG Zephyrus G14, and all I have to do to run applications on the dGPU is use "prime-run". Dynamic power management also shuts down the GPU when it's not in use.

That's highly inconvenient. The best solution I've found is optimus-manager or prime-switcher.

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

#144

Earlier quoted context omitted.

Here is a link to a test of 101 different processors, with corresponding power consumption figures. Alas it is in Russian. https://www.ixbt.com/platform/101-cpu-platform-test-2017.htm...

Oh that's helpful, thanks. Don't need to read the text. It's also a bit insane how far they go with the marketing lies.

I apologize, did not link the graphs: power consumption: https://www.ixbt.com/img/x780/r30/00/02/26/21/31power_334783...

power effciency: https://www.ixbt.com/img/r30/00/02/26/21/33ee_794961.png

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

#145
post #28
post #24

Hmm I need some schooling please: "The TDP for the latter part is 35 W while the i9-10900F is listed at 65 W, but being an Intel desktop processor that just reflects the TDP for the base clock, with much higher energy demands required for higher clocks (e.g. maximum PL1 has been recorded at 170 W)." So where do I find the actual maximum power consumption on recent desktop CPUs then? Do I set a limit in the BIOS? Do I…

> So where do I find the actual maximum power consumption on recent desktop CPUs then? Unfortunately you do this by putting it on a motherboard and and generally putting an amp meter on the 12v EPS rail. Either that or just power from wall. The CPU vendors have worked really hard to hide this. Mostly because for most people it's largely irrelevant these days as the CPU will scale to cooling and power delivery. There…

Yeah, it's irrelevant if you buy prebuilt.

If you build it yourself, how do you know how to spec the system? You either waste resources by overspeccing it or you waste money by paying for something that can't run at full tilt on your system.

And if you care about quiet and cool computing, you're screwed even more. A CPU that will run until it hits thermal limits means maxed out fan speed. I don't want maxed out fan speed.

Are there any CPU coolers left that allow you to set a fixed speed manually? :)

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

#146

Earlier quoted context omitted.

Interestingly, it was not like that previously. I'd say it slowly started with Haswells. Sandy and Ivy were often less power hungry than their TDP suggested.

I don’t think this is about power efficiency, but thermal envelope.

Is there much difference?

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

#147
post #66

Earlier quoted context omitted.

Mind sharing the brand/model?

https://www.amazon.com/gp/product/B086K3NFQQ/ref=ppx_yo_dt_b... Is what we picked up. First time I've ordered a laptop without actually messing with it first. This likely will be used as more of a workstation/desktop replacement. Looking forward. Package just showed up! Unboxing now.

I kept a bookmark just to come back to this thread later. Would you mind sharing your experience so far?

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

#148

Earlier quoted context omitted.

I don’t think this is about power efficiency, but thermal envelope.

Is there much difference?

Yeah, I believe the point was max performance, not performance per watt.
Post reply on HN