Name: Dimensity 9400 - 1x Cortex-X925, with 3x X4 and 4x A720 cores plus a 12-core Immortalis-G925 GPU
Uploaded: 2024-10-21T08:38:14.000Z
Duration: 11 min 16 s
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So MediaTek has had a kind of an up and down relationship with flagship processors at one point.

It really only focused on mid-range processors.

However, that did change with the launch of the Dimensity 9000 range.

If you take, for example, the Dimensity 9300, 9,300, that with its all big core design, it had four Cortex-X4 cores, four Cortex-A720 cores,

It's had various improvements in camera and connectivity.

So it was widely received in some markets as a good processor for flagship devices.

And now MediaTek has launched its latest processor in the 9000 range.

This is the 9400, of course, the successor to the 9300.

And in this video, I wanna tell you all about the 9400 and what we can expect.

So if you wanna find out more, please let me explain.

Okay, so the Dimensity 9400, 9,400, the new processor from MediaTek.

There's lots of information on this slide.

So we're gonna stay on here a little bit and let's just go through it.

Let's start with the diagram here on the right-hand side.

We can see for the CPU here, we've got an octa-core setup, one, two, three, four, five, six, seven, eight.

We've got a Cortex-X925 here as the primary core.

Now I've got a video here on this channel about the Cortex-X925 if you aren't familiar with that chip.

It's basically the Cortex-X5, but they did a renaming, so it's now the 925.

Then for the kind of the middle cores, which are really still performance cores, because this is an all big core setup, you've got three X4 cores.

This year we've got one Cortex-X925 and then three X4 cores.

And then for what would be the little cores, but in fact they are still themselves big cores, you've got the Cortex-A720, the same as last time, so not upgraded there.

12 megabytes of L3 cache, 10 megabytes of system cache.

So they've improved the caches a lot, and we'll talk more about that in a moment.

On the GPU side, you've got the Immortalis G925, X925.

That's the latest Immortalis GPU, and interestingly, it's got the same number of cores as the previous one, which is a good thing, because generally these GPUs get better each year, and so the manufacturers tend to reduce the number of cores, and actually they've still got the same or better performance, but this year they've kept the same number of cores, which means the performance goes up.

LPDDR5X RAM, the neural engine, and then connectivity and the display, the image signal processor, and so on.

Now as I say down the left here, we've got the TSMC 3 nanometer process here.

29.1 billion transistors, that's in fact 28% more than the NuMensity 9300, and a lot of that's gonna be in the increase in the cache sizes.

As I said, this is the second generation of all big core architectures.

You've now got the X925Z, 12 core, the latest generation of their NPU, and then the modem and so on, which we'll go to in a minute.

So that's the general overview of what we're getting.

So when you first look at that, you might say, oh, that's the same CPU as last year, just they've changed one core, and they've upgraded the GPU.

Yes, that's true, but it's a bit more nuanced than that.

So let's just look at that octa-core again here.

So second generation, all big core architectures, there's no 520s in here, for example, for the power efficiency cores.

So you've got this latest X925, and you've got three X4 cores, four A720 cores, but the point is here, they're all running much faster, because they've gone to that new process node.

Then the frequency of the X925 is 11% higher than the frequency of the prime core that was the X4, the X4 prime core in the 9300, and then the remaining X4 cores are running at 15% higher clock speed, and the 720s are actually running at 19% higher clock speed.

So big clock speed increases across the board, and the result of the improvement in the IPC, that's instructions per cycle, so that's how much the processor can do each clock cycle.

So it doesn't matter what the clock cycle is, if it was just given one clock cycle, because that doesn't happen, how much could it do?

And in fact, we're running now at 3.62 gigahertz.

So it's 15% faster at the same clock speed, and then it's actually running at a higher clock speed.

So the overall is you're getting a 35% faster single-threaded performance, compared to the Dimensity 9300, and 28% faster sustained multi-thread performance.

Interesting they've got the word sustained in there, so that's before any possible peaks that you might get at the beginning, and then on the second and third run, it dips down a bit.

We will of course test that when we get some actual phones in our hands.

These are not from devices we have in hand.

However, these are claiming 35% better, as I just said, for single-core, 28% better for multi-core.

Now, if I then plot that on some of my graphs, some of the data I've got, let's have a look at single-core first of all.

So here is that 3,055 that they're mentioning.

That's much faster than the 2,264 for the previous generation.

And as we can see here, kind of much better than the Snapdragon 8G3 and 8G2.

Now, of course, we've got the Snapdragon 8 Gen 4, if that's what it ends up being called, coming soon.

But the other one, of course, is the Apple A18 Pro, still faster in its single-threaded performance.

And we'll talk more about that in just a moment.

But interestingly, MediaTek are claiming that the Dimensity 9400 is faster in the multi-core score at 9,600 compared to 8,149.

And that is, of course, reasonable because Dimensity is an octa-core, whereas the Apple is a hexa-core.

Now, when we go here, we can look here at the single-core score per gigahertz.

So the important thing to remember here is that the iPhone is running, the latest one, is running at just over four gigahertz, whereas the MediaTek is running at 3.62 gigahertz.

Now, if you work out what speed you get per gigahertz, actually, you'll find that the X925 has actually got a better IPC than the A18 Pro, if they were running at the same clock speed.

So that's hypothetical, but it is interesting.

And then here are the other numbers for the other ones, particularly here, the Dimensity 9300.

Again, the 9300 number and the 9400 number come from MediaTek, not from me.

Okay, so when we get to the GPU, as I said, 12-core Immortalis G925.

You've got PC-level ray tracing, then a bunch of other gaming technology, which are really important, like the super resolution and the adaptive gaming technology and so on.

Overall, 41% faster peak performance, 40% faster ray tracing, 44% better power savings, and these are all compared to the Dimensity 9300.

So the fact they've stuck with the 12-core while upgrading the GPU means that it's quite a significant GPU upgrade.

And here are some numbers, again, to emphasise these are from MediaTek, not from our independent testing.

You've got here the Aztec Ruins running in Vulcan.

Okay, so we go up from 99 to 130 with the new chip.

And again, with Manhattan running in full HD from 344 to 375.

So significant performance improvements there for the GPU.

The camera, full-range HDR zoom for video recording and video capture and so on.

Basically, the key things to take away here are 8K60 decode, including AV1, 8K30 encode, but that's 10-bit encode, not AV1, but H.265 and H.264.

But you've got 8K60 8-bit H.265 encoding, and it supports triple fold displays here.

We've seen one of those at least already.

So the camera and display can cope with all of that.

And then of course, AI, the latest generation of their NPU.

Most importantly, focusing on how quick you can run a large language model locally on the device.

80% faster LLM prompt performance, they're saying here, with 35% more power efficiency, and two times image generation, diffusion generation performance.

Again, all of these are compared to the Dimensity 9300 numbers as given by MediaTek.

You've got a sub-6, of course, seven gigabits per second.

And you've got Wi-Fi 7, a Wi-Fi 7 with tri-band concurrency there.

So the latest in Wi-Fi and kind of what you'd expect for 5G.

Subtitles ListPlay Video

Dimensity 9400 - 1x Cortex-X925, with 3x X4 and 4x A720 cores plus a 12-core Immortalis-G925 GPU

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