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Question x86 and ARM architectures comparison thread.

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Thibsie said:
Partly because every single keyboard, mouse and proper (speedy) usb keys are still all stupidly USB A.
Click to expand...

Also because keyboard/mice are low speed peripherals. Unless you want to designate a few USB-C ports as low speed you're going to waste I/O links providing a bunch of full speed USB-C ports only to have them used for slow HID devices. If you took the capacity for one USB-C port you could split it into three USB-A ports for storage drive, keyboard and mouse and because the keyboard/mouse are so slow your storage drive will still be running at full speed.
 
Doug S said:
Also because keyboard/mice are low speed peripherals. Unless you want to designate a few USB-C ports as low speed you're going to waste I/O links providing a bunch of full speed USB-C ports only to have them used for slow HID devices. If you took the capacity for one USB-C port you could split it into three USB-A ports for storage drive, keyboard and mouse and because the keyboard/mouse are so slow your storage drive will still be running at full speed.
Click to expand...

Though a full speed usb-c has 24 wires (18 used) a usb-a 3.0 has 9-12 wires (7-8 used) If you split all the wires and counted up the bandwidth and devices it wouldn't matter because you probably bought a charging cable.
 
USB-C is still a stellar way to connect to a docking station. Full spec USB 3.1 and up gives you most everything you need in 95% of use cases. However, when I'm on the road, I want at least one USB-A for a mouse or file transfer.
 
Don't remember if this has been talked about yet, but placing an X925 in a mobile/DT solution (GB10) nets it >7% higher IPC than the same core in a smartphone (Xring O1) thanks to uncore changes.
1764552894875.png
The result of this is that Zen 5 DT is only 5% faster than the X925, while also having a ~13% lead in perf over Zen 5 high power mobile (strix halo).
The X925 is last gen too.
 
Geddagod said:
Don't remember if this has been talked about yet, but placing an X925 in a mobile/DT solution (GB10) nets it >7% higher IPC than the same core in a smartphone (Xring O1) thanks to uncore changes.
View attachment 134611
The result of this is that Zen 5 DT is only 5% faster than the X925, while also having a ~13% lead in perf over Zen 5 high power mobile (strix halo).
The X925 is last gen too.
Click to expand...
Bweeeeee it's n3 opinion discarded
 
Geddagod said:
Don't remember if this has been talked about yet, but placing an X925 in a mobile/DT solution (GB10) nets it >7% higher IPC than the same core in a smartphone (Xring O1) thanks to uncore changes.
View attachment 134611
The result of this is that Zen 5 DT is only 5% faster than the X925, while also having a ~13% lead in perf over Zen 5 high power mobile (strix halo).
The X925 is last gen too.
Click to expand...
Also how is Apple still making do with Everest and sawtooth rehashes??

They have to move on from that base soon
 
Geddagod said:
Don't remember if this has been talked about yet, but placing an X925 in a mobile/DT solution (GB10) nets it >7% higher IPC than the same core in a smartphone (Xring O1) thanks to uncore changes.
Click to expand...
Different cache configs is likely the only significant change.

Also GB10 is still only as good as the platform.

To play any decent games you are going to need emulation, and even with all the work that's gone into FEX emu you are still going to get a significant emulation tax in both performance and power relative to a native hw solution.

Especially if it lacks the x86 memory mimicking thing that Apple Mx's CPU has that mitigates the tax of x86 -> ARM64 translation.
 
soresu said:
To play any decent games you are going to need emulation, and even with all the work that's gone into FEX emu you are still going to get a significant emulation tax in both performance and power relative to a native hw solution.
Click to expand...
It seems some games can be made to run at an acceptable speed: https://forums.anandtech.com/thread...nning-of-transformation.2617658/post-41535822

I agree it's a single example and it might not be representative of other games.

As an aside, back when I was playing on PC 10 years ago, I had to switch back to Windows from Linux as Wine was not always working as expected (in particular with MT games). Beyond the processor the OS was an issue. If I ever decided to return to gaming on PC, I'd stick to Windows + x86.
 
Nothingness said:
It seems some games can be made to run at an acceptable speed: https://forums.anandtech.com/thread...nning-of-transformation.2617658/post-41535822

I agree it's a single example and it might not be representative of other games.

As an aside, back when I was playing on PC 10 years ago, I had to switch back to Windows from Linux as Wine was not always working as expected (in particular with MT games). Beyond the processor the OS was an issue. If I ever decided to return to gaming on PC, I'd stick to Windows + x86.
Click to expand...
And even in PC and Windows, you should use mostly Intel since most software were fully optimized to that brand... and even to certain generations like Sandy or Skylake.
 
DZero said:
And even in PC and Windows, you should use mostly Intel since most software were fully optimized to that brand... and even to certain generations like Sandy or Skylake.
Click to expand...
I hope that a game that was optimized for Sandy Bridge or Skylake works well on any recent CPU, be it from AMD or Intel 🙂
 
poke01 said:
Also how is Apple still making do with Everest and sawtooth rehashes??

They have to move on from that base soon
Click to expand...
This is no longer Everest or Sawtooth. It's funny that some people in the industry continue to refer to Apple's new P and E cores by the same names from the A16 era simply because Apple has stopped giving them code names. The cores from the A15 and A16 have different code names, but the changes in architecture are minimal.
 
poke01 said:
this is news to me
www.notebookcheck.net

Apple MacBook Pro 15: How to get 2 more hours of battery life with this simple trick

Sometimes, the things our reviewers uncover is downright stunning: power consumption on the new MacBook Pro 15 is significantly lower in full screen than in windowed mode. Consequently, battery life is improved by a stunning 135 minutes or, in other words, the length of an entire feature film...
www.notebookcheck.net www.notebookcheck.net

laptops are fun
Click to expand...
What I find really funny is what they write:
This does not apply to Windows, though.
Click to expand...
Remove the capital and it fully applies to windows (vs fullscreen) 🙂
 
poke01 said:
this is news to me
www.notebookcheck.net

Apple MacBook Pro 15: How to get 2 more hours of battery life with this simple trick

Sometimes, the things our reviewers uncover is downright stunning: power consumption on the new MacBook Pro 15 is significantly lower in full screen than in windowed mode. Consequently, battery life is improved by a stunning 135 minutes or, in other words, the length of an entire feature film...
www.notebookcheck.net www.notebookcheck.net

laptops are fun
Click to expand...
Would this apply to current hardware? I figured this was a issue of the GPU not having to be concerned about what's behind the window and keeping it updated. But, the comments imply this is a related to how work is divided between the iGPU and dGPU, if I'm understanding correctly.
 
digitaldreamer said:
Would this apply to current hardware? I figured this was a issue of the GPU not having to be concerned about what's behind the window and keeping it updated. But, the comments imply this is a related to how work is divided between the iGPU and dGPU, if I'm understanding correctly.
Click to expand...
That comment looks stupid: there's no dGPU on recent Mac.

And then I realized the article is 8 years old... @poke01 I hate you 😀

EDIT: the comment that looks stupid is the one on the site, just to clarify.
 
digitaldreamer said:
Would this apply to current hardware? I figured this was a issue of the GPU not having to be concerned about what's behind the window and keeping it updated. But, the comments imply this is a related to how work is divided between the iGPU and dGPU, if I'm understanding correctly.
Click to expand...
Nothingness said:
That comment looks stupid: there's no dGPU on recent Mac.

And then I realized the article is 8 years old... @poke01 I hate you 😀

EDIT: the comment that looks stupid is the one on the site, just to clarify.
Click to expand...
🤣Sorry here’s something more recent on iGPUs.

Video playback 1080p on Chinese streaming site. Motherboard power consumption:

IMG_2996.png
 
digitaldreamer said:
Would this apply to current hardware? I figured this was a issue of the GPU not having to be concerned about what's behind the window and keeping it updated. But, the comments imply this is a related to how work is divided between the iGPU and dGPU, if I'm understanding correctly.
Click to expand...

It is probably bypassing all the GUI software layers and writing directly in the framebuffer.
 
Thibsie said:
Partly because every single keyboard, mouse and proper (speedy) usb keys are still all stupidly USB A.
Click to expand...
All of my keyboards and mice came with USB-C, and my fastest USB drives are USB-C.

I think it is mostly due to the dedicated lanes needed for higher speeds. ADDING A BUNCH OF 20-40gbps ports, regardless of type, is complex and expensive.
 
johnsonwax said:
Apple ditched USB-A on laptops NINE years ago. You'd think if this was a problem there'd be some backlash on it.
Click to expand...
laptops are than fine to come with no USB-A as they come with a built in keyboard and trackpad and mostly likely will be docked via USB-C but desktops are a big no.

Apple still ships USB-A on its professional desktops
 
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