Is it just me or does it seem like mobile CPUs are gaining on desktop CPUs?

magi44ken said:

Thanks. Finally we have a laptop that a proper cooling design system.

I have the Dell XPS 15 and it throttle and very hot if you use some intense applications for 19 minutes or so. I have to undervolt and additional high quality thermal to help a little.

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On my Dell XPS 15 9570, I am using Honeywell PTM-7950 Phase Changing thermal pads which is what the Lenovo Legion uses and it still throttles. Others seem to have way lower temps using the PTM-795 though. My keyboard is 50C when you put your hands above the keys.

magi44ken said:

It's the Intel i7 Gen10 and GeForce 1650 Ti. Mainly use for video editing in h265. It's a great machine.

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What's the actual model?

Almighty1 said:

I have a question, I know with most CPUs, it's 2 threads per core but how does the above work as that's bascally like 1.3 threads per core?

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It is because only P-Cores are hyper-threaded.
Intel i9 13900H 14-cores (6 P-Cores w/ 12 threads, 8 E-Cores w/ 8 threads) 20 threads total
Intel i9 13900HX 24-cores (8 P-Cores w/ 16 threads, 16 E-Cores w/ 16 threads) 32 threads total

Q: Is it just me or does it seem like mobile CPUs are gaining on desktop CPUs?

A: Of course mobile CPUs are catching up. They're... "mobile".







Most of the comparisons in this thread are apples vs. oranges.
We need to be comparing "like" processors...



The only problem laptop processors have is less room for cooling.

Almighty1 said:

What's the actual model?

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Dell XPS 9500

Almighty1 said:

On my Dell XPS 15 9570, I am using Honeywell PTM-7950 Phase Changing thermal pads which is what the Lenovo Legion uses and it still throttles. Others seem to have way lower temps using the PTM-795 though. My keyboard is 50C when you put your hands above the keys.

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Probably not enough airflow. I also use a fan underneath which helps a lot. Did you put thermal pad on vram too?

MisterEd said:

It is because only P-Cores are hyper-threaded.
Intel i9 13900H 14-cores (6 P-Cores w/ 12 threads, 8 E-Cores w/ 8 threads) 20 threads total
Intel i9 13900HX 24-cores (8 P-Cores w/ 16 threads, 16 E-Cores w/ 16 threads) 32 threads total

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Thanks, after I read more info on P-Cores and E-Cores, it is similar to mobile phone processors in about 7+ years ago.

magi44ken said:

Probably not enough airflow. I also use a fan underneath which helps a lot. Did you put thermal pad on vram too?

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The VRAM has thermal pads even when it shipped. I only added the ones in the top. Do you have AC? Since in San Francisco, we don't have AC so our temps are hotter as it depends on the room temperature too. What are your actual temps?

Almighty1 said:

The VRAM has thermal pads even when it shipped. I only added the ones in the top. Do you have AC? Since in San Francisco, we don't have AC so our temps are hotter as it depends on the room temperature too. What are your actual temps?

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We are local. That's awsome.

Those are pretty good temperature.

I don't have AC in my place too. During a hot day, I have to use an external fan pad where the laptop sit on it.

I no longer have the laptop to test the temperature. I sold it recently and using x220 as temporary for now.

I'm still debating if I go for a medium size desktop or laptop.

If I run Prime95 on my laptop for 5 minutes it doesn't appear to Thermal Throttle. Does that sound right?
Someone earlier mentioned CinebenchR23. Does it stress your CPU any more than Prime95?

@hsehestedt But wouldn't a better comparison be comparing benchmarks between Desktop and laptop core cpus of the same generation. Intel makes a lot of improvements from one generation to the next. Unless tests are done using the whole apples to apples oranges to oranges thing, about all one can say is the newer generation is faster...as one would expect.
I guess I'm too old school in my thinking to ever believe a laptop could match a like desktop especially from a thermal standpoint. I fully realize that technology has passed me by. I'm not as gung-ho in keeping up as I once was.

magi44ken said:

We are local. That's awsome.

Those are pretty good temperature.

I don't have AC in my place too. During a hot day, I have to use an external fan pad where the laptop sit on it.

I no longer have the laptop to test the temperature. I sold it recently and using x220 as temporary for now.

I'm still debating if I go for a medium size desktop or laptop.

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Finally someone local. I still have no idea why the keyboard is so hot as it wasn't that way when the system was new. Maybe my room temperatures are also higher as that part is hard to tell. I don't have a external fan and my notebook is on top of a big cardboard box with my Proceed Audio Amplifier inside and then I have this lapdesk on top where I have the notebook on top:

My problem might or might not be related to the temperature because usually after a few days, the CPU % and memory still didn't go up but the system lags badly.... I remember other people post about the issue but I have no idea what they are talking about:



Seems like the same person wrote this but I have no idea what was meant exactly..

Almighty1 said:

Finally someone local. I still have no idea why the keyboard is so hot as it wasn't that way when the system was new. Maybe my room temperatures are also higher as that part is hard to tell. I don't have a external fan and my notebook is on top of a big cardboard box with my Proceed Audio Amplifier inside and then I have this lapdesk on top where I have the notebook on top:

Home Office Pro Lap Desk, Black Carbon

SHOP DESCRIPTION The Home Office Pro Lap Desk means you can work from anywhere in style and comfort. Fitting most 15.6” laptops, the sleek 21.1” x 14” carbon-textured surface comes with a cushioned wrist rest and a built-in, precision-tracking mouse pad. The phone slot enables you to watch...

lapdesk.com

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His advice is to find that stable driver version and use the modern standby mode instead of S3 sleep mode. Once you find the stable driver, disable the Windows Update. You use Windows Update Blocker.


Also he advice to undervolt to help with the black screen issue.

As for the keyboard temperature, maybe it's time to do some cleaning on the fans and repaste thermal paste, etc..