Discussion AMD SoC Halo series GPU discussion

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gdansk

Diamond Member
Feb 8, 2011
4,158
6,931
136
Definitely not a smaller memory bus

That is his whole point on using the halo in the handheld
There's little point to it if the GPU is smaller/lower clocked. Basically what those upcoming handhelds want is a Zen 5 + RDNA4 SoC with LLC. Strix Halo is a bad fit for handhelds due to RDNA3.5 and also the typical <20W TDP.
 

GTracing

Senior member
Aug 6, 2021
478
1,112
106
There's little point to it if the GPU is smaller/lower clocked. Basically what those upcoming handhelds want is a Zen 5 + RDNA4 SoC with LLC. Strix Halo is a bad fit for handhelds due to RDNA3.5 and also the typical <20W TDP.
If you watch the video, one of his main points is that Strix Halo heavily downclocks the memory bus when running under ~30 watts. Future 256bit CPUs (either Strix Halo's successors or custom 256bit gaming chips) could heavily improve 20-25W gaming performance over Strix Halo by tuning the memory bus to run faster at lower wattages.



I don't think that a handheld with a 256bit memory bus makes sense, but I also don't think we can extrapolate 25W gaming performance for all 256bit CPUs from Strix Halo.
 
Reactions: Joe NYC and marees

LightningZ71

Platinum Member
Mar 10, 2017
2,237
2,740
136
Jeez, it doesn't have to be that complicated. Just take KRK, ditch the NPU, replace it with 16MB MALL cache and grow the whole thing to fit 16 CUs instead of the 8 is has now. That's MORE than enough for a competent handheld chip. It would have FAR greater gpu performance than PHX/HPT, able to sustain higher clocks and with more effective memory efficiency. 128bit LPDDR5X would give it plenty of memory throughput. 4+4 Zen 5 is more than enough compute for gaming with that level of GPU. If you're growing the SOC, you can ditch a lot of the shoreline I/O as it's just going to be used in a handheld with very few ports.
 
Jul 27, 2020
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In fact AMD already told Valve to pound sand.
Valve's projected sales numbers must've been too abysmal for AMD to even consider making anything custom for them.

I guess Valve must now go to...

INTEL!

Six Skymont cores + enough Celestial cores to do 1080p 60fps with raytracing
 

Kronos1996

Member
Dec 28, 2022
69
112
76
Valve's projected sales numbers must've been too abysmal for AMD to even consider making anything custom for them.

I guess Valve must now go to...

INTEL!

Six Skymont cores + enough Celestial cores to do 1080p 60fps with raytracing
That’s not how it works from what I understand. AMD’s semi-custom group will make anything you want for the right price. One question I have is if Sony and Microsoft are responsible for ordering wafers directly from TSMC and basically having their own WSA contracts?
 

Mopetar

Diamond Member
Jan 31, 2011
8,416
7,593
136
If Valve just wanted to order a million Stix Halo dies I'm sure AMD would have no problems selling them as many, wafer availability permitting, but custom silicon needs its own set of masks on top of any design work and that adds significant costs that someone needs to pay for.
 

poke01

Diamond Member
Mar 8, 2022
3,505
4,826
106
Also Windows is a pain for AI.....
oh one last thing Thunderbolt on AMD laptop yay
 

LightningZ71

Platinum Member
Mar 10, 2017
2,237
2,740
136
Well, at least we now know which laptop everyone is going to pull out to show that AMD "sucks". That HP one is just a very bad design choice/implementation.
 

fastandfurious6

Senior member
Jun 1, 2024
555
712
96
The VAST majority of customers have ZERO idea what's inside of the SoC. A few know the relative performance without understanding why. The rest of us on the forums make up such a tiny portion that they don't really care about us.

big time

this should be permanently pinned as banner in the entire forum / all threads
 

MS_AT

Senior member
Jul 15, 2024
677
1,373
96
To be fair the Linux vs Windows comparison is a bit biased, considering it was out of the box Win11 corporate tuned vs fresh Ubuntu install. The amount of "useful" software running in the background on Win11 including HP's wolf security could well, skew the results a bit. Not to mention no data about power consumption, when Win usually is using more tuned power profiles.

https://blog.hjc.im/strix-halo-local-llm.html here Halo LLM test from David Huang using fairly vanilla llama.cpp
 
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