By Jeremy Laird

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Jeremy Laird

11 September 2025

Apple is the king of IPC…

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(Image credit: Apple)

Apple’s new A19 Pro chip for the iPhone 17 was announced yesterday and the first Geekbench scores have been uploaded. To be quite frank, if this was a new x86 CPU for gaming PCs, we’d be losing our minds.

The A19 Pro is scoring nearly 4,000 points in Geekbench 6’s single-thread test. That compares with about 3,500 for the best AMD desktop CPU. And may I remind you, that’s in a freaking phone. The A19 Pro in a desktop with the power budget and thermals that affords would be higher still, well over 4,000.
If a new AMD or Intel CPU popped up in Geekbench hitting, say, 4,500, the internet would just about break. And to be clear, these Geekbench numbers for the A19 Pro are plausible. The previous-gen A18 Pro scores around 3,500 points in Geekbench 6. So, a 15% boost to 4,000 points for the latest chip fitted to a phone with a new vapor chamber cooling system doesn’t seem like a massive stretch.

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Of course, Geekbench is hardly the perfect benchmark. And it’s demonstrably not a game. But comparative real-world performance in applications doesn’t tend to be a million miles away from Geekbench. The bottom line here is that Apple has long had a clear IPC or single-core and per-clock-cycle performance advantage over x86 chips from AMD and Intel, and it looks like the new A19 Pro chip will maintain that lead.

Really roughly, it looks like the A19 Pro has an IPC advantage approaching 30% over the best x86 chips. That’s pretty huge. It’s also a figure that AMD and Intel are very unlikely to reach in a single generation. So, it’s unlikely that AMD’s next-gen Zen 6 architecture or Intel’s Nova Lake will match the Apple A19 Pro.

The vapor chamber in the new iPhone 17 Pro is probably helping to boost the A19 Pro’s single-thread Geekbench score. (Image credit: Apple)
But here’s the really crazy bit. Even if they did, that probably wouldn’t mean they’d match Apple. Because the A19 Pro will be in iPhones you can buy in a few weeks, but Zen 6 and Nova Lake aren’t out for a year or more. And by then, there will be another new Apple CPU and that one is expected to be on TSMC’s new N2 silicon and will almost certainly be a fair bit faster than the A19 Pro which is on TSMC N3 silicon.
However you slice it, then, Apple looks to have a pretty major architectural advantage with its CPU cores. That’s a bit odd when you consider that it’s not ostensibly a CPU company. And so it begs the question of why the CPU specialists at AMD and Intel can’t match Apple.

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Part of the answer is perhaps that Apple has full control of its own hardware and software stack. It designs and engineers both its own CPUs and operating systems and can optimise them to work nicely together to the nth degree.
It also, obviously, has absolutely huge resources and uses the very latest TSMC silicon. By way of example, those Geekbench 6 results show the Apple A19 Pro with 6MB L2 cache per performance core. That’s 50% more than Geekbench reports for the previous A18 Pro.

The performance of the A19 Pro chip in a mere smartphone form factor is pretty wild. (Image credit: Apple)
The comparison gets a bit complicated because the A18 Pro actually has 8 MB of L2 cache per performance core. But here’s the thing. The AMD Ryzen 9 9950X3D has just 1MB L2 cache per core. The full cache comparison is complicated and currently unclear, what with the X3D’s V-cache and Apple’s own last level SoC cache, which was 24MB for the A18 Pro. But it certainly seems like Apple absolutely loads its chips with cache and can probably do so because it uses the most advanced silicon.
Undoubtedly, there’s a lot more going on than just Apple throwing a load of cache memory at its processor cores. But however Apple is achieving this performance, it’s very impressive. And I kinda wish we had access to it in our PCs.

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Jeremy Laird

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Hardware writer

Jeremy has been writing about technology and PCs since the 90nm Netburst era (Google it!) and enjoys nothing more than a serious dissertation on the finer points of monitor input lag and overshoot followed by a forensic examination of advanced lithography. Or maybe he just likes machines that go “ping!” He also has a thing for tennis and cars.

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With vapor-chamber cooling, ray-tracing, tensor cores and a high-refresh screen, the iPhone 17 Pro sounds like a premium gaming PC, but I’ll stick with my trusty old Steam Deck, thanks

A gaming benchmark face-off between AMD’s Ryzen Z2 Extreme and Intel’s Core Ultra 7 258V is surprisingly close, proving once more that Lunar Lake is the best chip Intel has made in years

AMD made major gains on Intel in the desktop CPU market over the last year, but still lags significantly behind in mobile, according to a Mercury Research report

An Intel Nova Lake leak suggests the next generation of Core Ultra chips will have 60% more multi-threaded performance, but the numbers just don’t add up

Intel claims 18A, the node Pat bet the company on, is either 25% faster or 38% more efficient than Intel 3. Though that’s a node Intel didn’t have enough faith in to release for desktops or laptops

Nova Lake shipping manifest confirms rumours that Intel’s flagship CPU will be packing up to 52 cores, but more cores aren’t all Intel needs

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