Intel calls its 5.3GHz 'Comet Lake-H' chip for gaming laptops the 'fastest mobile processor'

Intel's new 10th-gen Core chips are the fastest ever, Intel claims, setting up a showdown between the Comet Lake-H chips and AMD's latest Ryzen 9 4900HS.

Credit: Intel

Intel’s 10th-gen “Comet Lake-H” mobile processors for gaming laptops aspire to something that, so far, AMD’s Ryzen hasn’t: pure clock speed. Announced Thursday, Intel’s 10th-gen H-series chips go above 5GHz, the first time a mobile PC processor has reached those heights.

In fact, most of Intel’s six new Comet Lake H-series chips top 5GHz, including a “step up” Core i7 chip, the Core i7-10875H (2.3GHz base, 5.1GHz turbo). Intel’s designed it as a slightly cheaper alternative to the new uber-premium Core i9-10980HK, though both chips include 8 cores and 16 threads. It’s this new Core i9 that sets a high-water mark for clock speed, cresting at a whopping 5.3GHz.

All this potentially sets up a hot debate among mobile gamers: buy in to Intel’s claims that most games still are largely dependent on single threads, where clock speed rules the roost? Or follow AMD, which has made its strongest case in decades that its Ryzen 9 4900HS is simply the highest-performing mobile PC processor on the market?

It sounds like we’ll have a number of points of comparison, as Intel’s promising more than 100 different systems, largely aimed at gamers and content creators, will include the new H-series chips. Pre-orders for those PCs will begin April 2, with systems starting to ship on April 15.

Asus ROG Zephyrus GX501 IDG/Gordon Mah Ung

Expect that Intel’s new Comet Lake-H chips will go into notebooks like (but not necessarily including) this Asus ROG Zephyrus GX501.

Intel's Comet Lake-H pushes well above 5GHz

Comet Lake-H isn't Intel's first mobile gaming chip, but it's the first to appear in such a wide swath of laptops, including thin-and-lights. Intel didn’t even make a 9th-gen Core chip for thin-and-light PCs, so the prior Intel Core i9-9980HK and its cousins ended up being stuffed into 4-pound notebooks like the Asus ZenBook Pro, Dell Precision 15, or the Apple MacBook Pro 15.

In contrast, Intel expects more than 30 systems using Comet Lake-H will be thin-and-light designs slimmer than 20mm. Intel executives said that Comet Lake-H will be featured in designs across the consumer, commercial, and workstation markets, which innovations including 300Hz displays and HDR1000 panels. 

intel comet lake-h skus Intel

Intel’s new Comet Lake-H lineup.

Every chip in Intel’s new Comet Lake-H lineup consumes 45W, which makes them far more powerful and power-hungry than Intel’s well-received 28W ”Ice Lake” chips introduced last year. (AMD’s Ryzen 4000 series are 35W chips.)

One question is why Intel built a “Comet Lake-H” chip, rather than design a more powerful version of the well-rounded Ice Lake chip. The idea, according to Frederik Hamberger, Intel’s general manager of premium and gaming laptops, was to design Comet Lake-H specifically for gamers and content creators, each of which typically prefer a discrete GPU. As such, the Comet Lake-H chips do not include integrated graphics. “We think about catering to the end user with a Comet Lake-H focus on frequency and best performance...with a big pipeline to the discrete graphics,” Hamberger said.

intel comet lake-h new features Intel

A summary of the new and shaowcase features within Intel’s Comet Lake-H.

Intel has launched six chips in the category, ranging from the Intel Core i5-10300H (2.5GHz base, 4.5GHz turbo) at the low end, all the way up to the Core i9-10980HK at the high end. As Intel’s screenshot above indicates, all of the chips support Optane Memory, an Intel storage innovation that hasn't quite received the attention Intel would like.

As always, Intel’s processor matrix hides a few quirks. First, only the Core i9-10980HK is truly unlocked; the Core i7-10750H is “partially” unlocked, meaning that it can be pushed upward by four speed bins—probably maxing out at 5.5GHz, though Intel didn’t specify. 

intel comet lake-h features Intel

Intel’s Comet Lake-H chips should appear in a variety of devices and form factors.

The single-core turbo frequency reflects what Intel calls Intel Thermal Velocity Boost (TVB), which typically provides two “speed bins” worth of overclocking ability—200MHz, in real-world terms. Intel has improved Thermal Velocity Boost in this generation to allow overclocking the chip to 65W, far higher than its 45W rating. Thermal Velocity Boost works hand in hand with on-die and in-system temperature sensors, pushing the speeds up higher until they reach unsafe or uncomfortable levels. In the case of the Core i9-10980HK, that equates to 5.3GHz up to 65 degrees Celsius, 5.2GHz at 85 degrees Celsius, and 5.1GHz at 100 degrees Celsius, Intel executives said.

Intel's TVB works with Speed Optimizer, a one-click overclocking feature built into Intel’s Extreme Tuning Utility. The related Intel Turbo Boost Max Technology 3.0 also identifies the two fastest-performing cores on the chip and pushes lightly-threaded apps like games to them. 

Another generational improvement is the memory. While the 9th-gen mobile Core chips used DDR4-2666 memory, the Comet Lake-H series bumps that to DDR4-2933.

How fast is Intel's Comet Lake-H, exactly?

So we know how fast these chips are, in terms of clock speed. But exactly how much performance are they expected to deliver?

Recall Intel’s newfound love of real-world benchmarks: great for indicating what sort of performance you’ll expect running real-world applications, but lousy for comparing Intel’s offerings against the competition. PCWorld asked Intel for Cinebench numbers to provide more context, and was politely refused. So we have to use what Intel provided us, in terms of comparisons against its own chips.

intel comet lake-h gaming performance Intel

Intel doesn’t show its cards with regards to performance, but this is one of the better comparison between Comet Lake-H and its predecessors.

Intel claims that its new Core i9 is 44 percent faster in overall performance (measured in SysMark 2018) than a three-year-old PC powered by a Core i7-7820HK. It’s twice as fast in Blender video rendering, using the same two systems. Intel claims that the overall performance of the Core i7-10750H is 33 percent faster (in SysMark) than a three-year-old PC powered by a Core i7-7700HQ, 44 percent faster in gaming (Assassin’s Creed: Odyssey), and 70 percent faster in exporting a 4K video file in Power Director 4K.

Intel’s gen-over-gen gaming tests provide a bit more clarity. Here, the Intel Core i7 is compared against the older 7th-gen Core i7-7700HQ, with significant increases in terms of gaming performance: from 31 percent in World of Tanks to 44 percent in Assassin’s Creed Odyssey.

Intel also compared the Core i9-10980HK to the Core i7-7820HK, generating performance increases of between 23 percent and 54 percent in games, with the most gains coming in Red Dead Redemption 2. However, Intel didn’t manufacture a mobile 7th-gen Core i9, skewing the comparison.

Hamberger said he expects “double-digit” performance improvements up and down the new Comet Lake-H chips over the previous, 9th-gen parts. The exception may be the new “step-up” Core i7-10875H, where Hamberger said Intel expects up to a 20-percent improvement. He called that just an estimate, however; because of the limitations placed on Intel by the coronavirus, Intel hasn’t actually tested the Core i7-10875H yet. “We expect it soon, and we’ll run those system tests as soon as we have it,” Hamberger said.

None of this gets us as close as we’d like for comparing the Core i7-10875H or any of the other new chips against AMD’s Ryzen 9 4900HS. But you can take our tests of the older Core i9-9980HK or similar parts and tack on 10 percent or more to their scores, just for fun.

asus rog zephyrus g14 cinebench r15 nt IDG

Our multithreaded Cinebench scores for the Asus ROG Zephyrus G14, the first notebook to use AMD’s Ryzen 4000 mobile chips.

One aspect that Intel hasn't said much about is battery life, a critical element in notebooks though less so in gaming models, where they're almost always plugged in. Hamberger said the best-performing system that Intel has seen in its labs has delivered between 20 and 22 hours of battery life, based on a video rundown test. 

Platform improvements help round out CPU performance

Intel’s latest 10th-gen mobile chips have a new chipset, too: the follow-up to the existing HM370, known as the HM470. On board are 40 PCI 3.0 lanes, 16 of them sitting off of the CPU. 

intel comet lake h chipset diagram Intel

One of its more interesting features of the HM470 is the addition of two Thunderbolt 3.0 controllers, each of which supports two ports. That means Comet Lake-H laptops could support up to four Thunderbolt ports, potentially replacing the more generic USB-C ports found in some laptops.

While Thunderbolt 3 ports allow for exotic I/O solutions such as external GPUs, the real difference between a regular USB-C port and a true Thunderbolt connection comes down to displays. USB-C allows for a pair of external 4K displays running at 30Hz, good mainly for static images. Thunderbolt 3 can power two 4K displays running at 60Hz, much more comfortable for gaming and intensive use. In general, the implementation of Thunderbolt technology within chipsets has been exclusive to Intel.

The HM370 chipset is also expected to support Intel’s Wi-Fi 6 (Gig+) wireless technology, which first accompanied Ice Lake. Wi-Fi 6’s chief benefit is what’s known as “Orthogonal Frequency Division Multiple Access,” or OFDM, divvying up the bandwidth to let devices communicate without waiting. “Wi-Fi 6 Gig+” is an optional feature which increases the size of the available channels to 160MHz, allowing a total bandwidth of 1.68Gbps. Laptop makers have the option of using older radios as an alternative to WI-Fi 6, but Intel executives said they doubted that would happen.

With Comet Lake-H closely following Ryzen 4000, we have hot competition and renewed excitement in the gaming laptop market. AMD is now just as potent in mobile as it already is on desktop, where it swaggered in and, depending on the workload, cleaned Intel's clock. Will it be the same result in laptops? We shouldn't have to wait long to tell.

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Mark Hachman

Mark Hachman

PC World (US online)
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