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

[Pdscoelho]

Can't decide if I should bite on a 7700x or wait for a newer x3D to arrive

 

[ASMB]

Here is an issue raised by someone about the AMD presentation, https://youtu.be/FVesi8Uj78s?t=1277

 

[TrixP10]

Here is an issue raised by someone about the AMD presentation, https://youtu.be/FVesi8Uj78s?t=1277

I have an issue with the person who has an issue

 

[carrot1401]

Rocking my 3900x and gaming either at 3440x1440 144hz or 4k 60hz (depending if I'm sat at my desk or racing rig), am I missing out on much here? Currently 2080ti but keeping eye on the 4 series...thinking that will be a better purchase in the short term...

 

[Armageus]

Rocking my 3900x and gaming either at 3440x1440 144hz or 4k 60hz (depending if I'm sat at my desk or racing rig), am I missing out on much here? Currently 2080ti but keeping eye on the 4 series...thinking that will be a better purchase in the short term...

You are correct - money will be better spent on a GPU

 

[Andromeda1983]

No they don't, 120 watts measured at the EPS rail for the 5950X.

Steve Burk, Gamers Nexus.

You should watch the 5900X review from GN as well, they got the 120W on the 5950X due to silicon quality but the 5900X they reviewed got 133W.

See below for more information on what's considered the defaults:

Package Power Tracking (“PPT”): The PPT threshold is the allowed socket power consumption permitted across the voltage rails supplying the socket. Applications with high thread counts, and/or “heavy” threads, can encounter PPT limits that can be alleviated with a raised PPT limit.

Default for Socket AM4 is at least 142W on motherboards rated for 105W TDP processors.
Default for Socket AM4 is at least 88W on motherboards rated for 65W TDP processors.

Thermal Design Current (“TDC”): The maximum current (amps) that can be delivered by a specific motherboard’s voltage regulator configuration in thermally-constrained scenarios.

Default for socket AM4 is at least 95A on motherboards rated for 105W TDP processors.
Default for socket AM4 is at least 60A on motherboards rated for 65W TDP processors.

Electrical Design Current (“EDC”): The maximum current (amps) that can be delivered by a specific motherboard’s voltage regulator configuration in a peak (“spike”) condition for a short period of time.

Default for socket AM4 is 140A on motherboards rated for 105W TDP processors.
Default for socket AM4 is 90A on motherboards rated for 65W TDP processors.

 

[g67575]

TSMC 4nm confirmed for Zen 5 desktop processors in 2024 (q4?):

AMD Confirms Optical-Shrink of Zen 4 to the 4nm Node in its Latest Roadmap

AMD in its Ryzen 7000 series launch event shared its near-future CPU architecture roadmap, in which it confirmed that the "Zen 4" microarchitecture, currently on the 5 nm foundry node, will see an optical-shrink to the 4 nm process in the near future. This doesn't necessarily indicate a...

www.techpowerup.com

Some 4nm used for the Zen 4 line-up also, probably enterprise only.

 

[philo-sofa]

They got me with three years plus of mobo support. Intel would have to pull a Conroe on me to get me to buy in at this point.

 

[Calin Banc]

Rocking my 3900x and gaming either at 3440x1440 144hz or 4k 60hz (depending if I'm sat at my desk or racing rig), am I missing out on much here? Currently 2080ti but keeping eye on the 4 series...thinking that will be a better purchase in the short term...

If you lower the settings (that depend on the GPU), can the 3900x keep up to 144fps or the GPU is still limiting the frame rate? Do you want 144fps, are you happy with less? Even at higher resolutions the CPU can matter, especially in low fps scenarios and even more so in ultrawide / multi display setups where the FoV is larger than usual (ergo, more stuff to be prepared for render => the need of a stronger CPU).

 

[Alan McFall]

Here is an issue raised by someone about the AMD presentation, https://youtu.be/FVesi8Uj78s?t=1277

I agree with him, with SAM enabled it's platform performance not just CPU.

 

[RavenXXX2]

Intel supports rebar, possible it was turned on.

 

[uscool]

I agree with him, with SAM enabled it's platform performance not just CPU.

it said in the notes that ReBar was enabled for Intel which is the same thing ?

 

[cliffy]

it said in the notes that ReBar was enabled for Intel which is the same thing ?

Yeah exactly the same thing although it seems to work better which is hardly AMDs fault

 

[Toasty]

Rebar enabled in both cases and zen 3 used 3600 cl 16 so he didn’t read the notes

 

[Alan McFall]

Intel supports rebar, possible it was turned on.

Rebar is the industry standard, AMD have developed SAM specificaly for their platform and it shows.

 

[ASMB]

From the limited testing done by this site SAM and rebar can have different results in the same game, sometimes intel is better, sometimes AMD. So it may depend on if they cherry picked games in which Sam is better than rebar, https://www.legitreviews.com/benchmarking-amd-smart-access-memory-on-intels-z490-chipset_224898

 

[Alan McFall]

From the limited testing done by this site SAM and rebar can have different results in the same game, sometimes intel is better, sometimes AMD. So it may depend on if they cherry picked games in which Sam is better that rebar, https://www.legitreviews.com/benchmarking-amd-smart-access-memory-on-intels-z490-chipset_224898

True, would be funny if they are sandbagging again hahahah.

 

[Bencher]

Here is an issue raised by someone about the AMD presentation, https://youtu.be/FVesi8Uj78s?t=1277

That's just BS. Im not the biggest fan of AMD, but their testing afaik was flawless. 6000c30 isn't slow ram by any means, and they used the same ram for both. They could just as easily use officially supported ram, which is 4800 for Intel, to give themselves an advantage but they didn't, they took the high road approach. Also we need to remember, they were comparing their cheapest CPU with the most expensive one from Intel, so yeah. Yes, in a real world scenario you can use 7000c30 ram on Intel and be faster than the 7600x, but that's missing the point

 

[mrk]

Maybe I will jump aboard AMD given how awesome AM5 looks so far from the showcase. If all appears to be true once reviewers like Jay/GN etc get their hands on them, then yeah count me in the running for upgrading from 12700KF

 

[keyser van someone]

How much faster than a 3600?

Honesty my CPU is still fine. I'd prefer to wait for a 8C/16T game I want. PCIE5, DDR5 (and 2.5Gbe) are nice to have, AM5 and all the future support is the real selling point. The only reason I'd get Intel is more control for undervolting and overclocking slightly.