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AMD Releases Ryzen 7040U Series "Zen 4" Processors for Ultraportables

btarunr

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AMD today released its Ryzen 7040U series "Zen 4" mobile processors for the Ultraportable segment. These are processors with a 15 W TDP that's configurable up to 30 W by notebook designers to enable better boost frequency residency. AMD technically announced its entire Ryzen 7040 series at the 2023 International CES, but put out details for only the 7040HS series with a 28 W to 45 W TDP targeting thin-and-light and mainstream notebook form-factors. This would be the first time we're seeing details of the 7040U series. The company announced that processors in the 7040U series are shipping to notebook manufacturers, but it did not put out a specific date on which you can buy notebooks powered by these processors.

The Ryzen 7040U series consists of four processor models (SKUs). The lineup is led by the Ryzen 7 7840U, followed by the Ryzen 5 7640U, the Ryzen 5 7540U, and has the Ryzen 3 7440U at the entry level. All four processor models offer the latest "Zen 4" CPU cores and RDNA3 graphics. The Ryzen 7 7840U packs an 8-core/16-thread CPU clocked at 3.30 GHz with up to 5.10 GHz boost frequency. The Ryzen 5 7640U has a 6-core/12-thread CPU clocked at 3.50 GHz with up to 4.90 GHz boost. The Ryzen 5 7540U differs from the 7640U not just in slightly lower CPU clock speeds—3.20 GHz with up to 4.90 GHz boost—but also the lack of the XDNA Ryzen AI feature. The Ryzen 3 7440U has a leaner CPU still, with just 4-core/8-thread, clocked at 3.00 GHz with up to 4.70 GHz boost, half the shared L3 cache size of the other three models, and a lack of Ryzen AI.



The 7840U features all 12 RDNA3 compute units physically present on the processor's iGPU, working out to 768 stream processors, and AMD has given this iGPU the branding Radeon 780M. The 7640U packs the Radeon 760M iGPU, which has 8 CU or 512 stream processors. The 7540U and 7440U come with the basic Radeon 740M, which has 4 CU (256 stream processors).


All four processor models being launched today, are based on the 4 nm "Phoenix" monolithic silicon. This chip physically packs a single 8-core CCX based on the latest "Zen 4" microarchitecture. Each of the up to 8 CPU cores has 1 MB of dedicated L2 cache, and share up to 16 MB of L3 cache. The iGPU is based on the latest RDNA3 graphics architecture, and has up to 12 CU (compute units), worth 768 stream processors.


AMD claims that the RDNA3 iGPU can be anywhere between 30% to 139% faster than the Iris Xe (Xe-LP) iGPU powering the competing Intel Core i7-1360P "Raptor Lake-U" processor. In terms of CPU performance, AMD claims between 5% to 75% faster performance than the Apple M2 SoC, and between 29% to 128% faster CPU performance than an Intel Core i7-1360P "Raptor Lake-U."

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Intel cuts the GPU from 92 EUs to 80 EUs to 64 EUs going from the i7 to i5 to i3, which is a 13% cut for the i5 and 30% for the i3. But going from Ryzen 7 to Ryzen 5 (best) to Ryzen 5 (not best)/Ryzen 3 results in 12 CUs to 8 CUs to 4 CUs, so a 33%-67% cut for Ryzen 5 and a 67% cut for Ryzen 3.

This picture will be changed a bit by clock speeds and memory bandwidth limitations, but it seems pretty clear that while Ryzen 7 7040U models have much better graphics than Intel i7 U models, the advantage shrinks for every tier down from there.
 
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It seems that Phoenix is not a bad series, but again we had too high expectations that did not meet the reality. Almost by no means, unfortunately.
 
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Desktop APUs with that radeon 780M, please!
Let's ask the guys in China who make X99 motherboards, they may be able to help and repackage the 7840U as 7700CN for us.
 
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Any idea how this compares to the Z1 Extreme in the ROG Ally? Keep looking at the specs and they seem identical.

I’m torn between buying the Ally with the Z1 or Aokzoe A1Pro with the 7840U, which is possibly $100 more but comes with 32GBs of RAM as opposed to only 16GBs in the Ally.

More RAM means a bigger VRAM pool for the embedded GPU, allows for a 24/8 split between main memory and gpu, instead of 12/4 for the Ally, which could severely hamper its abilities to run more current games.

Would appreciate your guys’ input on this.
 

btarunr

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Any idea how this compares to the Z1 Extreme in the ROG Ally? Keep looking at the specs and they seem identical.

I’m torn between buying the Ally with the Z1 or Aokzoe A1Pro with the 7840U, which is possibly $100 more but comes with 32GBs of RAM as opposed to only 16GBs in the Ally.

More RAM means a bigger VRAM pool for the embedded GPU, allows for a 24/8 split between main memory and gpu, instead of 12/4 for the Ally, which could severely hamper its abilities to run more current games.

Would appreciate your guys’ input on this.
Wait for reviews first, then decide. I am also not a fan of only 16GB RAM especially for an APU, but Linus will probably compare both of them, so you will see which one is better.
 
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Wait for reviews first, then decide. I am also not a fan of only 16GB RAM especially for an APU, but Linus will probably compare both of them, so you will see which one is better.
That would be great, but the A1Pro is currently on early bird special sale, once the allocated units sell out, price will go up to $999, making it a lot less affordable. Wish Asus would also release a Pro model of the Ally with more RAM, but for now we can only hope for the 16GB model to be available :oops:
 
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