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Ryzen 7540U and 7840U for Topaz

  • Thread starter Thread starter Henry Richardson
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Windows.

Look at the HP report. It lists the part number of the memory chip. That chip has a capacity of 32 gigabits, or 4 gigabytes. You should have four of those chips on your memory card (probably soldered into your motherboard). That would make your total memory configuration 16GB. Windows is reporting each chip as a separate memory card.

If you do have soldered memory, that might explain why the reporting is what it is.
 
Henry Richardson said:
And here is what CPU-Z reports:

15fc3531554049d88808ed6cf6fd77e9.jpg.png

179b6782f9824ee2a44acca772cffa82.jpg.png
Click to expand...


It says you have 4x32-bit for Channel #. DDR5 is different in that it has a 32 bit wide data channel but also has 2 channels per DIMM. The software is seeing your memory as having 2 DIMMs, each having 2 channels, for a total of four channels.



The Module Size being reported is 4GB. You have 4 of these modules, which gives you 16GB total.



The reported DRAM Frequency is about 800MHz. That value has to be multiplied by 4 for the DDR5, which gives a 3200Mhz effective speed. Seems a little low - like it was using the lowest bJEDEC settings. This might be the case as the Timings are also quite low.
 
silentstorm said:
The specs for 7840U is such

b30ea7f6ce7746a28e7e5269cf8f4918.jpg

This 7840U supports only dual memory channels. The cpu- reporting likely refers to the chips on the ranks of the ram. Or a bug in reporting.

Not sure if there's any windows laptop that runs on 4 channels memory, I'd love to get one if there is :-D
Click to expand...
Okay, that is likely correct. I was just curious about it and wondering.
 
Henry Richardson said:
Henry Richardson said:
Anyone try this 14" laptop with Ryzen 5 7540U or Ryzen 7 7840U with Topaz Photo AI and/or other AI software?

https://www.hp.com/us-en/shop/Confi...yId=3074457345620970818&urlLangId=&quantity=1
Click to expand...
I decided to order one and delivery is supposed to be on 1/11. I got this:
  • HP Pavilion Plus 14" OLED 2880x1800
  • Ryzen 7 7840U, 8 cores, (3.3ghz, Turbo Boost 5.1ghz)
  • Radeon 780M iGPU
  • Ryzen AI engine
  • 16gb RAM (DDR5 6400mhz)
  • 1tb SSD
  • 31.4 x 22.7 x 1.75 (thickest place by display hinge) cm
  • 1.38 kg
  • 65 watt power brick


https://www.notebookcheck.net/HP-Pa...Changes-in-all-the-right-places.765524.0.html
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A few quotes concerning the 7840U power efficiency in this little HP laptop:

The Ryzen 7 7840U is the fastest Zen 4 U-series CPU at the time of publishing. It performs within 5 percent of the Core i7-12700H in last year's Pavilion Plus 14 while demanding just a fraction of the power.
...
Power consumption is where the system truly shines. Our AMD unit is able to complete the CineBench R15 Multi-Thread benchmark at around the same time as last year's Intel unit while consuming just half the power. Similarly, running Witcher 3 on the AMD or Intel model would consume around 42 W each even though frames rates on the AMD model would be 60 to 100 percent higher. The performance-per-watt advantages that Zen 4 provides over 12th gen Intel Core H cannot be understated.

We're able to measure a temporary maximum consumption of 51 W from the small (~8.8 x 4.9 x 2.8 cm) 65 W USB-C AC adapter when the CPU is at 100 percent utilization.
...
HP has increased the battery capacity from 51 Wh on last year's Pavilion Plus 14 to 68 Wh on this newer AMD version. When combined with the much more efficient Ryzen U-series CPU, battery life has increased almost two-fold from 4.5 hours to 8.5 hours of real-world WLAN browsing.
...
The Ryzen 7 CPU in particular is responsible for many of the advantages on the HP system. Its performance-per-watt is so much greater than the Core i7-12700H in last year's model that our AMD system runs both cooler and longer while providing faster gaming performance. The differences aren't even minor as they can be quite significant by several hours or dozens of frames per second.

The review does not discuss the Ryzen AI processor. It is used by Topaz Photo AI (according to Topaz) along with the 780M GPU to give a performance boost.
Member said:
This is the 2015 laptop I am traveling with right now:
  • HP Spectre x360 13.3" 1920x1080
  • i5-6200U, 2 cores, (2.3ghz, Turbo Boost 2.8ghz)
  • Intel HD Graphics 520
  • 8gb RAM (1600mhz)
  • 256gb SSD
  • 32.5 x 21.8 x 1.6 (thickest place by display hinge) cm
  • 1.44 kg
  • 45 watt power brick
I only work on 20mp and smaller photos using Lightroom Classic and occasionally using the Topaz programs, mostly Photo AI these days.

I will report back how well it works. See my earlier post from today in this thread for more info:

https://www.dpreview.com/forums/post/67457836
Click to expand...
 
Robert Zanatta said:
That's a 2 year old Intel processor. The latest Meteor Lake, like the 165H, would be a better comparison.
Click to expand...
I had never heard of the Ultra 165H, which seems slated to replace Core 7 13th gen in laptops. When 165H finally becomes available in products, it'll be interesting to see how its Arc iGPU works in real life. It does outperform Ryzen 7840U but consumes more power.

Loading…

www.notebookcheck.net
 
Robert Zanatta said:
That's a 2 year old Intel processor. The latest Meteor Lake, like the 165H, would be a better comparison.
Click to expand...
As that 2023 review says, they are comparing to the previous 2022 model of this 2023 laptop (which cost me $699).

Here are some good comparisons of the 2023 8-core 7840U to the 2023 10-core i7-1365U, which is probably the closest to the same laptop market CPU:

https://nanoreview.net/en/cpu-compare/intel-core-i7-1365u-vs-amd-ryzen-7-7840u

https://www.cpu-monkey.com/en/compare_cpu-amd_ryzen_7_7840u-vs-intel_core_i7_1365u

Take a look at the big difference in power efficiency in those 2 above. Also, the CPU, GPU, and AI processor results.

And here are some comparisons of the 2023 8-core 7840U to the 2024 12-core 7 165U:

https://nanoreview.net/en/cpu-compare/intel-core-ultra-7-165u-vs-amd-ryzen-7-7840u

https://www.cpu-monkey.com/en/compare_cpu-amd_ryzen_7_7840u-vs-intel_core_ultra_7_165u

The even newer 8840U is out now.
 
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CAcreeks said:
I had never heard of the Ultra 165H, which seems slated to replace Core 7 13th gen in laptops. When 165H finally becomes available in products, it'll be interesting to see how its Arc iGPU works in real life. It does outperform Ryzen 7840U but consumes more power.

https://www.notebookcheck.net/Intel-Core-Ultra-7-165H-Processor-Benchmarks-and-Specs.783001.0.html
Click to expand...
Above:

The 8-core Arc GPU running at up to 2.30 GHz is slated to be a proper alternative to the mighty Radeon 780M.

All this is in keeping with my thread I started in 2021:

Intel/AMD higher performance integrated GPU

https://www.dpreview.com/forums/post/65786476

It is good to see Intel and AMD start to prioritize their iGPUs.

Now we also know that an AI processor aka NPU aka Neural Engine (Nvidia calls it Tensor cores) is as or more important than the classic GPU for lots of current photo software (Topaz, DXO, etc.). Adobe makes use of it too.

The new 7 165U (successor to the i7-1365U) with 4-core Arc iGPU will compete with the new 8840U (successor to the 7840U):

https://www.notebookcheck.net/Intel-Core-Ultra-7-165U-Processor-Benchmarks-and-Specs.783343.0.html

The 4-core Arc Graphics runs at up to 2.0 GHz. We expect the iGPU to be about as fast as the aging 96 EU Iris Xe meaning it's good enough for most games at 1080p, provided one is fine with low-to-medium quality settings.

https://www.notebookcheck.net/AMD-Ryzen-7-8840U-Processor-Benchmarks-and-Specs.780980.0.html
 
Last edited:
Is there a way for you to see whether the AI processor is being used by Lightroom Classic or Topaz when you run them, or whether those are just generating CPU and GPU activity?
 
Henry Richardson said:
beneix said:
Is there a way for you to see whether the AI processor is being used by Lightroom Classic or Topaz when you run them, or whether those are just generating CPU and GPU activity?
Click to expand...
Did you see this? Watch the video too.

https://www.dpreview.com/forums/post/67464183
Click to expand...
Thanks. What I am wondering is if there is any tool that allows you to see the actual usage of the Ryzen AI processor, in the same way that you can see the distinct load on the CPU, GPU etc. When I try to understand where the performance bottleneck lies for different types of operations in my image processing workflow, this is instructive since some rely more on the CPU, some more on the GPU. If there were a way to see when Topaz was using the AI processor and not, that would be interesting.
 
Robert Zanatta said:
Windows resource monitor will show you load levels for CPU as well as different load types on the GPU. You could also get a utility like HWinfo to see all kinds of real time data points of the computer.
Click to expand...
Exactly. What about the load/utilisation for the AI processor, which is distinct from both the CPU and GPU?
 
beneix said:
Robert Zanatta said:
Windows resource monitor will show you load levels for CPU as well as different load types on the GPU. You could also get a utility like HWinfo to see all kinds of real time data points of the computer.
Click to expand...
Exactly. What about the load/utilisation for the AI processor, which is distinct from both the CPU and GPU?
Click to expand...
The recent Windows 11 update should have an NPU section under the performance section of Task Manager. And if it's not there yet it should be soon.
 
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CBR1100XX said:
beneix said:
Robert Zanatta said:
Windows resource monitor will show you load levels for CPU as well as different load types on the GPU. You could also get a utility like HWinfo to see all kinds of real time data points of the computer.
Click to expand...
Exactly. What about the load/utilisation for the AI processor, which is distinct from both the CPU and GPU?
Click to expand...
The recent Windows 11 update should have an NPU section under the performance section of Task Manager. And if it's not there yet it should be soon.
Click to expand...
There is, but you won't see it if Windows doesn't recognize you have an NPU. Device Manager will list it if there is one.
 
I wonder how the new Snapdragon will do compared to the 7840U I bought in January?

Anyone seen anything?
 
Henry Richardson said:
I wonder how the new Snapdragon will do compared to the 7840U I bought in January?

Anyone seen anything?
Click to expand...
Does Topaz Photo AI run on the X Elite at all?

It appears that Topaz doesn't support the ARM versions of Windows.
 
BobKnDP said:
Henry Richardson said:
I wonder how the new Snapdragon will do compared to the 7840U I bought in January?

Anyone seen anything?
Click to expand...
Does Topaz Photo AI run on the X Elite at all?

It appears that Topaz doesn't support the ARM versions of Windows.
Click to expand...
It will run in emulation. 10-20 perfect maximum drop in performance (for now).
 
The Point and Shoot Pro said:
BobKnDP said:
Henry Richardson said:
I wonder how the new Snapdragon will do compared to the 7840U I bought in January?

Anyone seen anything?
Click to expand...
Does Topaz Photo AI run on the X Elite at all?

It appears that Topaz doesn't support the ARM versions of Windows.
Click to expand...
It will run in emulation. 10-20 perfect maximum drop in performance (for now).
Click to expand...
That's if everything is supported and it works well with the emulation layer.

Lightroom Classic for example can't use the GPU currently.

And other bugs are popping up making it so some other apps don't run at all or have larger performance issues.

This isn't surprising, when Intel went big/little there were a few compatibility and thread scheduling issues and this is an even bigger switch. So this is likely the worst of it, the questions are how fast and broadly can they fix these issues?
 
Last edited:
CBR1100XX said:
The Point and Shoot Pro said:
BobKnDP said:
Henry Richardson said:
I wonder how the new Snapdragon will do compared to the 7840U I bought in January?

Anyone seen anything?
Click to expand...
Does Topaz Photo AI run on the X Elite at all?

It appears that Topaz doesn't support the ARM versions of Windows.
Click to expand...
It will run in emulation. 10-20 perfect maximum drop in performance (for now).
Click to expand...
That's if everything is supported and it works well with the emulation layer.

Lightroom Classic for example can't use the GPU currently.

And other bugs are popping up making it so some other apps don't run at all or have larger performance issues.

This isn't surprising, when Intel went big/little there were a few compatibility and thread scheduling issues and this is an even bigger switch. So this is likely the worst of it, the questions are how fast and broadly can they fix these issues?
Click to expand...
One concern may be drivers; at least when I had my Windows ARM Dev Kit, drivers couldn't be emulated, so anything that needed a driver (in my case, Macrium Reflect Free) would fail without a native ARM driver.
 
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