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

DDR4 performance has been surpassed by DDR5. New Z690 boards will never be cheap, they aren't designed to be. Soon they will be phased out and replaced with expensive Z790 boards.

B650 boards will be cheaper and will support upgrades (This year, AMD will have the better platform).
 
Dave2150 said:
1. Buy Z690 board (2nd hand boards going under £100 on forums/bay), or brand new for £180
2. Insert cheap high performance DDR4
3. Insert 13th gen i5
4. Enjoy insane performance at budget price
Click to expand...

Or just buy a B650 board, with cheapish DDR5 and a 7600X and you'll have spent almost the same but have a reasonably future proof platform for a similar cost, rather than something that is already EOL, with a janky mounting mechanism.
 
Dave2150 said:
? Z690 boards are cheap as chips and are readily available. One can simply buy one for a very cheap price 2nd hand, or even brand new. What don't you understand here?

1. Buy Z690 board (2nd hand boards going under £100 on forums/bay), or brand new for £180
2. Insert cheap high performance DDR4
3. Insert 13th gen i5
4. Enjoy insane performance at budget price
Click to expand...
DDR5 prices keep dropping, and AMD dont restrict any form of overclocking / tweaking on lower models like Intel do and you will be set for Zen5 and 3d cache who knows they might even go beyond that
 
uscool said:
DDR5 prices keep dropping, and AMD dont restrict any form of overclocking / tweaking on lower models like Intel do and you will be set for Zen5 and 3d cache who knows they might even go beyond that
Click to expand...

Lol Dave is on the back train now, hyping that DDR4 old school EOL tech. Amd made the right choice, DDR5 is great, it has superior performance and it's future proof
 
Validated 7950x stock cpu-z benchmark posted by Apisak

valid.x86.fr

AMD Ryzen 9 7950X @ 5198.69 MHz - CPU-Z VALIDATOR

[tdz6br] Validated Dump by Anonymous (2022-09-07 07:22:16) - MB: Gigabyte X670E AORUS MASTER - RAM: 65536 MB
valid.x86.fr valid.x86.fr

Shows at stock the 7950x boosts to 5.2ghz all core in multithreaded workload and sits at 1.31v on whatever bios revision he has. Temperature is recorded as 91c, type of cooling unknown
 
IPC looking pretty similar to Golden Cove so far, assuming a 5.2ghz clockspeed. Geekbench 5 showed similar results in integer and floating point workloads too.

The 13900K will probably be a bit ahead overall, just because of the 5% higher single core clockrate (estimate).
 
g67575 said:
IPC looking pretty similar to Golden Cove so far
Click to expand...
wouldn't trust CpuZ for IPC comparison. Historically it has been unreliable between AMD/Intel.
Also note that second CCD is doing 5.075.
Still impressive results for multicore. The higher power budget lets Zen 4 spread its wings.
 
keyser van someone said:
Maybe AMD have cracked cold fusion, the downside it's 91C cold. I think the 12C+ CPUs will need water cooling or a louder air cooler.
Click to expand...
Probably not, I doubt the user behind that validated bench has properly set up PBO2 and Curve Optimiser (or whatever the Zen 4 equivalents will be). Out of the box config might require chonky cooling as you describe, but a lot of advice going to prospective AMD purchasers since Zen 2 has been "don't forget to dial in your power limits, it's really easy and here's how".

I reckon we'll see those temps come down to mid 80s once actual customers start tweaking.
 
I'm fine with high temps next gen. AMD has a very advanced boost algorithm to keep clocks as high as possible and thermal sensors all over the chip. Thats why they don't need an "AVX downclock" flag. CPU will adjust clock with temp and power anyway.
But 80-90 degress would still be quite high and concerning to many. And you can't even fix it with good cooling alone (cpu will just boost higher still hitting high temps), adjusting PBO and curve optimiser is necessary.

5800X was the only SKU which went really hot in Zen3. It alone spawned a new thread "my cpu runs hot" almost weekly.
We will probably need PSA sticky message on top of this forum. "Zen 4 runs hot but there is no need to worry"
 
alec said:
I'm fine with high temps next gen. AMD has a very advanced boost algorithm to keep clocks as high as possible and thermal sensors all over the chip. Thats why they don't need an "AVX downclock" flag. CPU will adjust clock with temp and power anyway.
But 80-90 degress would still be quite high and concerning to many. And you can't even fix it with good cooling alone (cpu will just boost higher still hitting high temps), adjusting PBO and curve optimiser is necessary.

5800X was the only SKU which went really hot in Zen3. It alone spawned a new thread "my cpu runs hot" almost weekly.
We will probably need PSA sticky message on top of this forum. "Zen 4 runs hot but there is no need to worry"
Click to expand...

How can you say this before reviews come out? Much is just speculation. Perhaps the delay was to lower default voltage, which will make Zen4 run really cool.
 
Dave2150 said:
How can you say this before reviews come out?
Click to expand...
My guess, based on the way AMD went with higher power limits and quite high boost clocks (105W on a 6 core smaller chiplet?)
They will push clocks to the limit because they can. And because Intel is doing the same.
 
g67575 said:
It probably doesn't matter, because the people who have enough cash to buy a 7950X, will probably also buy high end cooling.
Click to expand...

Hopefully a 360 AIO is enough to keep temps under control. You shouldn’t need custom water cooling for these.

Would you expect the 7950x 3d to be much better than the 7950x? Maybe it’s worth the wait as I’ve heard it’s coming early next year.
 
I think the 8 core Vcache Zen 4 chip will be the one to watch, probably provide more gaming performance than some seem to expect.

16 core vcache will also be a good option, but few will be able to afford one. Won't be much faster than then Zen 4 vcache model with 8 cores in games (depends if you want the extra 8 cores for other tasks).
 
Is USB 4 version 2.0 still a while off from being included in LGA1700 or AM5 boards? Can we assume that since the most expensive /premium boards support 'only' USB 4 (V1), that there won't be any USB 4 V2 ports for a quite a while?

As far as I can tell, there isn't a USB4 v2 controller yet for boards (the spec for USB 4 v2 won't be finalised until November 2022 ...

I wonder if it will be possible to just install an add in card to get USB4 V2, at some point after it releases?
 
g67575 said:
Is USB 4 version 2.0 still a while off from being included in LGA1700 or AM5 boards? Can we assume that since the most expensive /premium boards support 'only' USB 4 (V1), that there won't be any USB 4 V2 ports for a quite a while?

As far as I can tell, there isn't a USB4 v2 controller yet for boards (the spec for USB 4 v2 won't be finalised until November 2022 ...

I wonder if it will be possible to just install an add in card to get USB4 V2, at some point after it releases?
Click to expand...

It's such a niche requirement that I suspect there's no rush to include it on anything other than premium motherboards, even then, still not really something worth bringing in quickly.
 
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