WYP
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Insane specs for today's mobile workloads.
Read more about Intel's 9th Generation of mobile processor.
Read more about Intel's 9th Generation of mobile processor.
Intel Launches their 9th Generation Mobile Lineup with up to 8 cores and 5GHz Clocks
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Thanos
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Let's take a closer look at the i9-9880H.
4.8GHz (single core active?) when operating below about 50C otherwise 4.6GHz. Does this also apply to the all core of 4.1GHz meaning a real clock of 3.9GHz for most users?
Will it run 3.9GHz all core with a TDP of 45W? How does a 9900K compare if limited to 45W running CBR15/20, anyone with a 9900K care to try? Of course undervolting would be recommended to achieve the highest possible clocks under such a power restriction.
4.8GHz (single core active?) when operating below about 50C otherwise 4.6GHz. Does this also apply to the all core of 4.1GHz meaning a real clock of 3.9GHz for most users?
Will it run 3.9GHz all core with a TDP of 45W? How does a 9900K compare if limited to 45W running CBR15/20, anyone with a 9900K care to try? Of course undervolting would be recommended to achieve the highest possible clocks under such a power restriction.
You can't really compare chips binned for desktop with those binned for mobile, without a doubt the mobile parts will be binned for lower leakage.
I currently use a 35W 3Ghz Ivy Bridge i7 quad, it's essentially a i5-3330 with HT enabled, hits 3Ghz fine within the 35W window, but if you limited a desktop Ivy i7(77W) to 35W you'd be very lucky to still get 3Ghz in that window.
I think luck would sum up this, modern power management means the chip will push itself to the limits of its silicon, and ofc every slab of silicon is different, will have different leakage at different clocks, chips that could be quite efficient in the 3Ghz range could have a sharp drop off not much higher depending on what areas the defects are in, alternatively chips could require a relatively high amount of power to hit 3Ghz but hit 5Ghz with a less steep ramp than most parts.
I currently use a 35W 3Ghz Ivy Bridge i7 quad, it's essentially a i5-3330 with HT enabled, hits 3Ghz fine within the 35W window, but if you limited a desktop Ivy i7(77W) to 35W you'd be very lucky to still get 3Ghz in that window.
I think luck would sum up this, modern power management means the chip will push itself to the limits of its silicon, and ofc every slab of silicon is different, will have different leakage at different clocks, chips that could be quite efficient in the 3Ghz range could have a sharp drop off not much higher depending on what areas the defects are in, alternatively chips could require a relatively high amount of power to hit 3Ghz but hit 5Ghz with a less steep ramp than most parts.
Thanos
New member
From my own experience which is quite small / limited, the desktop and mobile seem much the same except mobile seems to run hotter even though it's bare die. Heat produces more leakage. Perhaps they are in some cases desktop rejects that didn't cut the thermals so are set to run at lower clocks and power which would kind of make sense.
I think the results while not being exactly the same, wouldn't be hugely different.
There are laptops with 9900K desktop CPU's and PL1 may be somewhat closer to 120W than 45W. Would it be surprising if some laptop manufacturers set PL1 to 45W for these mobile CPU's while allowing some 28 seconds of prime time to make the benches look good. Hopefully we will find out soon.
I don't know what IVB CPU you have, perhaps a 3612QM with TDP rated at a base clock of 2.1GHz. I do have a 3770K which has a TDP of 77W IIRC rated at a base clock of 3.5GHz so the power doesn't seem so different in that respect, just lower clock and power limit set for the mobile. I could test it I suppose but not on this thread.
I think the results while not being exactly the same, wouldn't be hugely different.
There are laptops with 9900K desktop CPU's and PL1 may be somewhat closer to 120W than 45W. Would it be surprising if some laptop manufacturers set PL1 to 45W for these mobile CPU's while allowing some 28 seconds of prime time to make the benches look good. Hopefully we will find out soon.
I don't know what IVB CPU you have, perhaps a 3612QM with TDP rated at a base clock of 2.1GHz. I do have a 3770K which has a TDP of 77W IIRC rated at a base clock of 3.5GHz so the power doesn't seem so different in that respect, just lower clock and power limit set for the mobile. I could test it I suppose but not on this thread.
Yeah it's a 3612QM, while it does have a 2.1Ghz base, if I leave it at stock settings it always goes to 2.8Ghz under load. I'm using a strictly 35W cooler(T430 no GPU mod), so it seems to be boosting to that 2.8Ghz roughly within that TDP. My laptop charger is 65W and it charges under load with lots of USB devices & the screen on so it seems to be sticking within that when the whole system load is under 65W.
This laptops designed for 35W Ivy dual core i5's, you could never buy them with quad cores but it's a socketed laptop so this is kinda over-spec'd for the coolers ratings(It does sit at 80s under load)
This laptops designed for 35W Ivy dual core i5's, you could never buy them with quad cores but it's a socketed laptop so this is kinda over-spec'd for the coolers ratings(It does sit at 80s under load)
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Thanos
New member
Just noticed that over here they already have the MSI Titan GT75 9SG on sale with the i9-9980HK
https://www.jib.co.th/web/product/r.../NOTEBOOK--โน้ตบุ๊ค--MSI-GT75-9SG-299TH-TITAN
At around USD5300 I'll give it a miss as much as I'd like to give it a try
Also looking at some MSI EC firmware notes
https://www.jib.co.th/web/product/r.../NOTEBOOK--โน้ตบุ๊ค--MSI-GT75-9SG-299TH-TITAN
At around USD5300 I'll give it a miss as much as I'd like to give it a try
Also looking at some MSI EC firmware notes
Haven't checked how much that limit is though.
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