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*** AMD "Zen 4" thread (inc AM5/APU discussion) ***

So, it looks like the 7700 non-X is a real product, based on this benchmark:

Default string X670E Taichi - Geekbench

Benchmark results for a Default string X670E Taichi with an AMD Ryzen 7 7700 processor.
browser.geekbench.com

I suspect these 8 core CPUs will be cheaper and nearly as fast as the 7700X when overclocked.

The turbo boost clock is only 50-100 mhz slower than the 7700X in this benchmark. should run cooler at stock config, also.

But we don't know yet if they will only be released for use in pre-built /oem systems yet.
 
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Update on Ryzen 7000 C-State Boost Limiter​



Conclusion​

Okay, let us wrap this up. Here are the main takeaways from this blog post.

First, enabling C-states is preferred as it provides higher performance for both AGESA 1002 and 1003.

Second, AGESA 1003 re-introduces the Precision Boost C-State Boost Limiter, which was not present on the launch motherboards & BIOSes

Third, the C-State Boost Limiter prevents the CPU from boosting to over 5.5 GHz when more than four cores are active. As the Ryzen 9 7950X has a programmed maximum frequency ceiling of 5.85 GHz, it means potential performance loss.

Fourth, on motherboards with the option, simply enabling “Medium Load Boostit” works around the C-State Boost Limiter.

Fifth, on motherboards that do not have this option, asynchronous eclk provides the only viable overclocking strategy to increase the frequency beyond 5.5 GHz when more than four cores are active.

Sixth, the real-world performance impact of the C-state Boost Limiter is minimal. That is because you need a good CPU capable of boosting over 5.5 GHz with many active cores. Furthermore, most workloads will trigger other Precision Boost limiters that restrict the operating frequency.
Click to expand...

cstate_th_v1.jpg


skatterbencher.com

Update on Ryzen 7000 C-State Boost Limiter - SkatterBencher

AGESA 1003 re-introduces Precision Boost C-State Boost Limiter which prevents boosting to over 5.5 GHz when more than 4 cores are active
skatterbencher.com skatterbencher.com
 
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g67575 said:
It looks like disabling SMT improves gaming framerates on the 7950X, and probably the 7900X too:

FfH53PWXoAAV6n0


Twitter:

Seems like a better idea than disabling one of the CCDs.
Click to expand...


You're about 2 weeks late on the news. But that means you may not be aware that it's caused by a windows 11 bug and it effects the Intel 13900k too (though the affect on the 13900k is less but it's gaming performance also goes up when you disable cores and HT)
 
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Ok, well I just thought I'd let ppl know, in case they have a 12/16 core Zen 4 CPU.

Do we even know yet if it affects Windows 10 as well? If so, a proper fix might not be easy.
 
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Jay85 said:
Man people selling full ryzen 3000 systems for 500-600 barely enough to cover the cost of a brand new AM5 board and cpu, it just shows how overly priced and expensive it really is.
Click to expand...
Funny people didnt say that about Intels much overpriced lacking performance cpus.
with amd you can have the best cpus path possible with x3D technology.
Going to be a lot of people having buyers remorse with intel in January 2023 when amd unleash their memory on chip tech second gen.

Anyhow, gonna put together my zen4 rig on monday.
Knowing I can upgrade to x3D sometime next year is an awesome choice
 
RBImGuy said:
Funny people didnt say that about Intels much overpriced lacking performance cpus.
with amd you can have the best cpus path possible with x3D technology.
Going to be a lot of people having buyers remorse with intel in January 2023 when amd unleash their memory on chip tech second gen.

Anyhow, gonna put together my zen4 rig on monday.
Knowing I can upgrade to x3D sometime next year is an awesome choice
Click to expand...
Agreed it's a terrible time to build am5. For CPU, motherboard, and ram costs. The £ is slowly coming back against the $, which has been overpricing all PC hardware in recent week to add fuel to the fire.
Intel has the bottom of the CPU stack to itself still, the i3 12100 has nothing to match it from AMD. An updated Ryzen 3100/3300x would be a very good idea at this stage.
 
SMT is just a bios setting, isn't it? Can't you achieve the same with process lasso? Also, wtf is CCD lol. Ok, I've had a google about CCD and that sounds interesting, again is that just a BIOS setting?
 
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I think the resale value of my 7700X will be so low I may as well keep it when the 3D comes out lol.
That's ok though, its not an investment.
 
Can anyone explain the dual CCD latency windows (11?) thing to me please?
Looking at the charts above a 7950x with half the cpu disabled showing higher performance?
Half a 7950x is a 7700x?
How would a 7700x sit on that chart with its 300mhz lower boost clock speed?
 
Grim5 said:
Moore's law is dead posts microsoft paint looking chart saying it's from Intel managers saying amd makes better margins, gets called out as stolen
Click to expand...
It's very clearly the MLID image which has then been edited to remove his watermarks rather than the other way around.
Don't get me wrong I wouldn't trust any of his "leaks", but in this case, not guilty.
 
^JP^ said:
Can anyone explain the dual CCD latency windows (11?) thing to me please?
Looking at the charts above a 7950x with half the cpu disabled showing higher performance?
Half a 7950x is a 7700x?
How would a 7700x sit on that chart with its 300mhz lower boost clock speed?
Click to expand...
Because clock speed is only 1 of many things that can affect performance. Also, I've heard that (in most cases) the higher the clock frequency is, the less it will scale with game performance.

Another big factor, is that games just don't need to utilize more than 8 cores, for the most part
 
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g67575 said:
Because clock speed is only 1 of many things that can affect performance. Also, I've heard that (in most cases) the higher the clock frequency is, the less it will scale with game performance.

Another big factor, is that games just don't need to utilize more than 8 cores, for the most part
Click to expand...

Decided to order the 7700X with the intention of upgrading to a 3D chip next year rather than mess about with the 7950X.

Just waiting for motherboard and waterblocks now!
 
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