Monday, March 23rd 2020

Intel Core i5-L15G7 Lakefield Processor Spotted

Intel has been experimenting with a concept of mixing various types of cores in a single package with a design called Lakefield. With this processor, you would get a package of relatively small dimensions that are 12-by-12-by-1 millimeters withing very low TDP. Thanks to the Twitter user InstLatX64 (@InstLatX64) we have some GeekBench 5 results of the new Lakefield chip. The CPU in question is the Core i5-L15G7, a 5 core CPU without HyperThreading. The 5C/5T would be a weird configuration if only Lakefield wasn't meant for such configs. There are one "big" Sunny Cove core and four "small" Tremont cores built on the 10 nm manufacturing process. This is the so-called compute die, where only the CPU cores are present. The base dies containing other stuff like I/O controllers and PHYs, memory etc. is made on a low-cost node like 22 nm, where performance isn't the primary target. The whole chip is targeting the 5-7 W TDP range.

In the GeekBench 5 result we got, the Core i5-L15G7 is a processor that has a base frequency of 1.4 GHz, while in the test it reached as high as 2.95 GHz speeds. This is presumably for the big Sunny Cove cores, as Tremont cores are supposed to be slower. The cache configuration reportedly puts 1.5 MB of L2$ and 4 MB of L3$ for the CPUs. If we take a look at performance numbers, the chip scores 725 points in single-core tests, while the multi-core result is 1566 points. We don't know what is the targeted market and what it competes with, however, if compared to some offerings from Snapdragon, like the Snapdragon 835, it offers double the single-threaded performance with a similar multi-core score. If this is meant to compete with the more powerful Snapdragon offerings like the 8cx model, comparing the two results in Intel's fail. While the two have similar single-core performance, the Snapdragon 8cx leads by as much as 76.9% in a multi-core scenario, giving this chip a heavy blow.
Intel Core i5-L15G7 Intel Lakefield
Source: Tom's Hardware
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47 Comments on Intel Core i5-L15G7 Lakefield Processor Spotted

#1
Mats
Is 144 mm² considered small for what you get? Renoir is 150 mm² and it's got 8 cores, SMT, and powerful graphics.
Posted on Reply
#2
john_
You buy a 5 core CPU and when you really, REALLY need processing power, you end up with a single core CPU.

On the other hand, even PassMark was.... convinced that, in 2020, single core performance is more important, so what do I know?
Posted on Reply
#4
ARF
john_
You buy a 5 core CPU and when you really, REALLY need processing power, you end up with a single core CPU.

On the other hand, even PassMark was.... convinced that, in 2020, single core performance is more important, so what do I know?
Passmark, userbenchmark, CPU-Z, Adobe...... the list goes on and on.

We should blame that dark moment when IBM gave a birth to Intel.
But many people buy AMD products and things for Intel will become only worse, despite the corruption and anti-thrust activities.


www.cpubenchmark.net/cpu.php?cpu=Intel+Core+i9-9900K+%40+3.60GHz&id=3334


www.cpubenchmark.net/cpu.php?cpu=AMD+Ryzen+9+3900X&id=3493


www.cpubenchmark.net/cpu.php?cpu=AMD+Ryzen+9+3950X&id=3598
Posted on Reply
#5
ratirt
I wonder what's this CPU's purpose. Mobile market?
Posted on Reply
#6
londiste
ratirt
I wonder what's this CPU's purpose. Mobile market?
5-7W is basically tablets.
Posted on Reply
#7
ratirt
londiste
5-7W is basically tablets.
So mobile market because tablets are a part of the mobile market.
Posted on Reply
#8
notb
ratirt
I wonder what's this CPU's purpose. Mobile market?
Mobile is the main goal. But it would also be fine for a home NAS, a TV, a handheld console.

Also, that's all just consumer stuff. There's a big market for commercial / industrial solutions.
These SoCs should be really fast in single-thread, so it's an interesting choice for semi-custom devices - competing with both ARM and older x86.
Mats
Is 144 mm² considered small for what you get? Renoir is 150 mm² and it's got 8 cores, SMT, and powerful graphics.
Similarly, there's no reason to buy meat or vegetables, because chocolate gives you way more calories in the same size (probably cheaper as well).

12x12mm is the whole package (visible in one of the photos) - the element that you're supposed to put on a PCB. It contains more than just the die.
It's not much larger than high-end Snapdragon SoCs.
Package size doesn't scale linearly with die size (the computing element).

Renoir APU package will be 25x25mm or slightly larger. But it's a moot point anyway. Renoir and Lakefield probably won't compete in ANY product segment.
Posted on Reply
#9
Mats
I actually didn't look at the photo. Yeah, that's small, thanks for the heads up.

Never said they would be competing with each other, I just questioned if it really was considered small. Your food analogy doesn't work here.
Posted on Reply
#11
Assimilator
A chip with 4 big cores beating a chip with 1 core by 77% isn't really something for Qualcomm to write home about. Atom's problem has always been performance - if adding single x86 core, even a slow one, is able to overcome that, Intel will finally be able to break into the mobile market.
Mats
Is 144 mm² considered small for what you get? Renoir is 150 mm² and it's got 8 cores, SMT, and powerful graphics.
Renoir isn't 7W.
Posted on Reply
#12
Mats
Assimilator
Renoir isn't 7W.
How is that relevant? I'm strictly talking die size here. Are you suggesting that Renoir would have to be larger in order to just use 7 W? Of course not.
Besides, I've already been proven wrong here, for a different reason.
Posted on Reply
#13
TheGuruStud
Assimilator
A chip with 4 big cores beating a chip with 1 core by 77% isn't really something for Qualcomm to write home about. Atom's problem has always been performance - if adding single x86 core, even a slow one, is able to overcome that, Intel will finally be able to break into the mobile market.



Renoir isn't 7W.
Break into the mobile market with....a steaming turd?

Time for tdp down Renoir or dual core to annihilate this laughing stock lol
Posted on Reply
#14
notb
Assimilator
A chip with 4 big cores beating a chip with 1 core by 77% isn't really something for Qualcomm to write home about. Atom's problem has always been performance - if adding single x86 core, even a slow one, is able to overcome that, Intel will finally be able to break into the mobile market.
Honestly, this will be such a huge jump in low-power single-core performance... It's going to be a shock for device makers.
Ice lake U is 2-3 times faster than 6W Celerons in single-thread benchmarks, but real life gain will be even larger.

So the idea is excellent. Lets hope both Intel and OEMs execute this properly.

And I hope we see this in some budget products as well - for now it's only been announced in halo folding products and so on.
TheGuruStud
Time for tdp down Renoir or dual core to annihilate this laughing stock lol
Pulling 5-7W this will probably be twice as fast as a 2-core 6W Zen+ (in single-thread). AMD lately launched such a part: R1102G. I haven't seen any tests yet.
You can look for benchmarks of other Ryzen Embedded SoCs. Not great. This is not what Zen architecture was designed for.
Posted on Reply
#15
TheGuruStud
notb
Honestly, this will be such a huge jump in low-power single-core performance... It's going to be a shock for device makers.
Ice lake U is 2-3 times faster than 6W Celerons in single-thread benchmarks, but real life gain will be even larger.

So the idea is excellent. Lets hope both Intel and OEMs execute this properly.

And I hope we see this in some budget products as well - for now it's only been announced in halo folding products and so on.


Pulling 5-7W this will probably be twice as fast as a 2-core 6W Zen+ (in single-thread). AMD lately launched such a part: R1102G. I haven't seen any tests yet.
You can look for benchmarks of other Ryzen Embedded SoCs. Not great. This is not what Zen architecture was designed for.
Yet, it'll do it anyway with flying colors.
Zen+ lul. Get with the program.

Intel is throwing crap at the wall and doesn't know what to do (22nm lul).
Posted on Reply
#16
Vayra86
Quite curious to see what Intel can pull off with big little, tbh. They do have that single core performance as their main strength historically; if they can port that to mobile, they can make a dent.
Posted on Reply
#19
notb
TheGuruStud
It's a joke. Zen 2 would annihilate this garbo.
Zen 2 alternative doesn't exist.
And AMD just launched a 6W Zen SoC. Not even Zen+.

We've seen some leaked benchmarks and Zen2 mobile APUs will probably match Ice Lake U in single-thread performance (give or take) and won't scale so well for low power.
If using words like "annihilation" makes you happy - fine. But you may be disappointed...
Posted on Reply
#20
Chloe Price
I had 5c/10t when one core was defective in my 5820K.
Posted on Reply
#21
dicktracy
So many AMD fanboys it’s insane lol
Posted on Reply
#23
nienorgt
This processor have performance in the ballpark of my Acer Alpha Switch 12 2in1 using an i5-6200 while being fanless. Using a full fledged i5 in a fanless tablet sounded good on paper, but in reality the tablet gets burning hot and you are lucky if you hit 3h of real use.

So, now being able to have a tablet / 2in1 with the same performance without the heat and real battery life would be quite good.
It would certainly make a good candidate for next gen Surface Go, Windows 10X tablets and Chromebooks.
Posted on Reply
#24
Caring1
Mats
Is 144 mm² considered small for what you get? Renoir is 150 mm² and it's got 8 cores, SMT, and powerful graphics.
12mm X 12mm =144 mm² now?
My math puts it at 12mm²
Posted on Reply
#25
notb
Caring1
12mm X 12mm =144 mm² now?
My math puts it at 12mm²
I hope this was a weird joke. :)
Posted on Reply
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