Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)

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TESKATLIPOKA

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RX 7600 and 4600 Ti both seem to have a bandwidth of 288 GB/s
StrixPoint, if using 8533 speed modules would be 273 GB/s

5800x with DDR4-3200 had max bandwidth of 51 GB/s

This is as a comparison, of how much bandwidth CPU can take up, and typically, CPU is a lot more latency constrained than bandwidth constrained. So, CPU typically uses a fraction of the 51 GB/s, and most of the bandwidth would be left to the GPU
7700x with officially supported DDR5-5200 has max BW of 83 GB/s. We don't really know how much of that BW is consumed during gaming, yet It still shows Strix Halo will have less than RX7600.

There is another, more speculative area. Say the CPU decompresses a texture and writes it to certain memory address. It may be written to MALL cache first. Then CPU sends it to GPU, and it might be possible to the GPU to get it from the MALL instead of getting it from memory.

So, MALL may be more than compensating for memory areas in contention, since MALL bandwidth to GPU is likely >> LPDDR5 bandwidth.
I would have liked a combined 96MB MALL for both CPU and IGP instead of 64MB L3 + 32MB IC.
 
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Jul 27, 2020
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What are the chances of AMD crippling Zen 5 in firmware, just to avoid giving too much performance for "free" to the masses who ungratefully buy Intel at launch and wait for AMD prices to fall?
 

TESKATLIPOKA

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What are the chances of AMD crippling Zen 5 in firmware, just to avoid giving too much performance for "free" to the masses who ungratefully buy Intel at launch and wait for AMD prices to fall?
What ridiculous nonsense is this?
AMD can ask more If their product performs better than Intel, simple. There is no reason to cripple their own product.
 

biostud

Lifer
Feb 27, 2003
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And we have evidence in Zen 3 launch pricing that AMD is perfectly capable of simply charging more if they feel it’s justified.
Obviously, they are obliged to earn as much possible, as every other company. Whether they want to increase margins or grab market share (or both) that is up to those running AMD. If I had AMD stocks, that is what I would expect them to do.
 

Joe NYC

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7700x with officially supported DDR5-5200 has max BW of 83 GB/s. We don't really know how much of that BW is consumed during gaming, yet It still shows Strix Halo will have less than RX7600.


I would have liked a combined 96MB MALL for both CPU and IGP instead of 64MB L3 + 32MB IC.

The latency difference would hold back the CPU. L3 has lower latency. We don't know the latency of MALL cache, but definitely higher than CPU L3,

Also, moving cache from N4 Zen 5 to N3 SoC would not be a great idea.

Maybe next version of Strix Point will split the SoC to N6 + Advanced node, and then, AMD can drop a lot more Cache in the MALL.
 

eek2121

Diamond Member
Aug 2, 2005
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Charlys articles regarding AMD have turned into a joke.
He is constantly moaning and ranting about the smallest things.

He seems to be more on a personal vendetta against AMD instead of just reporting or commenting on their products.

His sources in Intel also seem to have vanished. He is only rehashing Intel press releases and emphasizing the positive bits.
Yeah I get the impression he is anti-AMD.

That said, the article isn’t complete nonsense.
 

TESKATLIPOKA

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It would just be a firmware handicap. They can remove it and unlock full performance with a firmware update in case Intel suddenly finds their mojo.
They would be losing money by artificially crippling their CPU.
Where is the logic in crippling a CPU, so It will be only 15% faster than the competition when It can be 25% faster and cost much more, earning more profit for AMD.
I seriously don't understand your logic.
 

CouncilorIrissa

Senior member
Jul 28, 2023
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This time they have bad taste in their mouth due to their Zen 4 experience.
Businesses do not really operate on "taste". And Zen 4 bombed in sales due to expensive platform while not being decidedly better than RPL.

Why would AMD cripple their CPUs that they have ALREADY invested in, instead of simply charging more?
 
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CouncilorIrissa

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Jul 28, 2023
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Why not cripple at 10-15% higher than Intel and still charge more? Unlock more performance later only to fight off some Intel secret weapon. Most gamers will wait for the X3D part anyway.
Because Halo effect matters. If your top chip is only 10% faster, then it does not affect sales too much across the lineup. But if you're 30% faster, then your entire lineup sells better. Not to mention that for every 1% of performance advantage, you can charge more than 1% in price.
 

linkgoron

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Mar 9, 2005
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Why not cripple at 10-15% higher than Intel and still charge more? Unlock more performance later only to fight off some Intel secret weapon. Most gamers will wait for the X3D part anyway.
When has this ever happened? What's the point? Ignoring the fact that AMD would get so much bad press, it's much better to just sell more and for more money. Let Intel handle releasing a slower product.

In addition, it hurts you in the future as the press will need to "rebench" everything, but your original benchmarks will already be in the wild...
 

Glo.

Diamond Member
Apr 25, 2015
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When has this ever happened? What's the point? Ignoring the fact that AMD would get so much bad press, it's much better to just sell more and for more money. Let Intel handle releasing a slower product.

In addition, it hurts you in the future as the press will need to "rebench" everything, but your original benchmarks will already be in the wild...
Nvidia sandbagging their GPU architectures for few generations now, and then releasing new, refreshed SUPER lineups, anyone?
 

linkgoron

Platinum Member
Mar 9, 2005
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Nvidia sandbagging their GPU architectures for few generations now, and then releasing new, refreshed SUPER lineups, anyone?
They did not sell firmware nerfed cards. Also, the 30 series was pretty much pushed to the brink.

For the record, the 2070S used the TU104 vs TU106 that the 2070 used, the 2060S also had a much better hardware configuration than the 2060 (256 bit vs 192 bit) and around 13% more cores.
 

Glo.

Diamond Member
Apr 25, 2015
5,761
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They did not sell firmware nerfed cards. Also, the 30 series was pretty much pushed to the brink.

For the record, the 2070S used the TU104 vs TU106 that the 2070 used, the 2060S also had a much better hardware configuration than the 2060 (256 bit vs 192 bit) and around 13% more cores.
The point stands. Nvidia sold sandbagged cards, one way or another.

2080 Super and the above were just firmware updated GPUs to new specs.
 
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