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

Some of you guys are worrying way too much, it's not like many of us will be able to afford, or want to buy a 16 core CPU costing ~£700, anyway. You can buy a good air cooler now for ~£50 anyway.

Temps on the 7600X were low under load, so far it looks like the temps correlate with the CPU voltage (nothing unusual there).

Logically, you will be able to get at least 4.5ghz out of a 7700X, at a power consumption of just ~105w, as shown by the base clocks / TDPs specs. Max power consumption of the 7700X when boosted should be 105w x 1.35 = 141.75w. A half decent cooler will handle that.

You will need a better cooler for the 7900X of course, at 4.7ghz the spec confirms that it consumes ~170w of power, higher if boosted. Again, £50 cooler will do the job.
 
I compared the integer and floating point singled threaded Geekbench 5 results for Zen 2 and Zen 3, here:

https://browser.geekbench.com/v5/cpu/15913526
https://browser.geekbench.com/v5/cpu/15913498

16.7% increase for integer workloads
16.8% increase for floating point workloads

So, it looks like single core performance improvements from Zen 3>Zen 4 will be higher.


on the otherhand looks like multi core real world performance is no better due to thermal throttling (was expected with 5nm density) and 360 aio will be necessary to see gains over zen 3.
 
Better cooling for the Eng sample 7950X is getting it well over 38K on Cinebench R23 now though

 

on the otherhand looks like multi core real world performance is no better due to thermal throttling (was expected with 5nm density) and 360 aio will be necessary to see gains over zen 3.
Seems unlikely to be true, considering the shrink in process to 5nm EUV. Besides, Zen 4 (with 6/8/12 or 16 cores run at 5ghz or higher on all cores) is bound to be faster than Zen 3 with the same number of cores active.

Thermal throttling seems unlikely with a sensible amount of voltage configured. As usual though, all the important details get left out.
 
Nothing announced yet, so probably 1st half of 2023, closer to June. I think these will be priced at £500 or more, but will perform very well in games for many years.
 
When are these expected roughly?
first half of next year at a guess.
Nothing announced yet, so probably 1st half of 2023, closer to June. I think these will be priced at £500 or more, but will perform well in games for many years.
£500 for the 7800x3d ? could be a beastly gaming cpu to last a while that one. let alone if they go up the stack and do a 7900 and 7950 variant.
 
Yeap, at least £500 for 8 core Zen 4 +Vcache. That's because 7700X price will stay high for a while (maybe fall when Meteor Lake comes out?).

12/16 core Zen 4 +Vcache maybe overkill, fine if ppl can afford?
 
Seems unlikely to be true, considering the shrink in process to 5nm EUV. Besides, Zen 4 (with 6/8/12 or 16 cores run at 5ghz or higher on all cores) is bound to be faster than Zen 3 with the same number of cores active.

Thermal throttling seems unlikely with a sensible amount of voltage configured. As usual though, all the important details get left out.
And now another source with totally different results:

 

Can confirm, Greymon55 is looking for donations for a new USB keyboard...

Don't get the excitement for potential higher core count V-cache CPUs, there will probably be more cache in total, but the L3 cache per CPU core would be the same... Adding more L3 cache only increases the cash, if ya know what I mean...
 
I suspect the $100 price cut to the 7950x was done so when the 7950x3d arrives it comes in at $100 higher, taking the old 5950x price slot and the 7800x will come in 7800x3d flavour only.
 
I think the high end/enthusiast gamer market will still find a 16 core Vcache model attractive, priced at $800 or more. I'm not sure it will be called '7950X3D' though, they might even create a new tier.

It makes sense not to announce the planned models yet, as that would hurt sales of Zen 4 models releasing this year.

It's not impossible that the max boost clocks for these CPUs will be ~100mhz higher. This would make sense in the case of a '7800X3D' (relative to the 7700X).

There isn't much reason to believe that performance in games will be more than was gained from 5800X >5800X3D (~9% on average). Probably a bit higher due to relatively higher clock speed gains.
 
I suspect the $100 price cut to the 7950x was done so when the 7950x3d arrives it comes in at $100 higher, taking the old 5950x price slot and the 7800x will come in 7800x3d flavour only.
Either that or it ends up behind the 13900k in performance.
 
Either that or it ends up behind the 13900k in performance.
Does that seem likely in tasks like gaming, with the 9% higher gaming performance (average), comparing Zen 3 and Zen 3 + vcache?

It will give a nice boost to gaming minimum FPS, not sure if it will help in other areas.

There's also some other factors that could affect Zen 4 gaming performance, like the fact that the memory controller runs at full speed, with at least DDR5 6000 MT/s RAM.
 
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