Questions about 7950 3DX coming soon

[Yoshiii335]

Hello

Is there going to be any big difference in performance between the 7950x and the new 7950 3Dx?

I use the pc for gaming and productivity work, 3D design, 3D rendering, movie editing.

What does the the 3D cache do for the chip?

 

[R-T-B]

Mostly it is for improving smoothness in gaming performance.

 

[eidairaman1]

Hello

Is there going to be any big difference in performance between the 7950x and the new 7950 3Dx?

I use the pc for gaming and productivity work, 3D design, 3D rendering, movie editing.

What does the the 3D cache do for the chip?

Look up the Review of the 5800X3D

 

[lexluthermiester]

Mostly it is for improving smoothness in gaming performance.

Not exclusively. Gaming will benefit like the 5800X3D does, but there are some compute tasks that will benefit as well.

Look up the Review of the 5800X3D

This. If you look at W1zzard's comparisons you'll see the differences particular work loads have.

AMD Ryzen 7 5800X3D Review - The Magic of 3D V-Cache

The AMD Ryzen 7 5800X3D is the company's new flagship gaming processor. It introduces 3D V-Cache, a dedicated piece of silicon with additional L3 capacity. In our review, we're testing how much the larger cache can help intensive gaming workloads and applications and compare it to the Intel Core...

www.techpowerup.com

The differences between the 7950X and 7950X3D will be similar.

 

[tabascosauz]

Hello

Is there going to be any big difference in performance between the 7950x and the new 7950 3Dx?

I use the pc for gaming and productivity work, 3D design, 3D rendering, movie editing.

What does the the 3D cache do for the chip?

The problem I see at this point is that since AMD has confirmed that CCD1 (Vcache) will have similar hard Fmax ceiling as 5800X3D while CCD2 is just a normal (traditionally better binned?) CCD, AMD and Microsoft have a LOT of work to do on the AGESA/scheduler side to make this work. And lord knows software has always been both companies' pain point.

• To get the best ST perf, top preferred core on CCD2 (normal) will have to be ALWAYS picked by Windows and CPPC.
• To get best gaming perf, load needs to be ALWAYS strictly confined to CCD1 (cache). AMD has a not so great reputation already on the 7950X.
• For best MT perf, all core clocks need to be reasonably high across both CCDs. I'm not sure how much of a clock gap between the two CCDs AMD is willing to accept, expect lower than 7950X performance.

If an 8-core is enough for you, the 7800X3D looks great and more of the same (ie. 5800X3D) without having to worry about any of these. If pure clock is needed, then 7950X. So much vid editing and rendering is done with pure GPU these days.

They say no manual OC but PBO for X3D, but nowhere do they promise +200 Boost Override. 5800X3D has PBO and CO albeit hidden, but cannot change Fmax.

 

[ir_cow]

We will soon know. Wiz will cover it all. Only can speculate right now.

 

[Lei]

Hello

Is there going to be any big difference in performance between the 7950x and the new 7950 3Dx?

I use the pc for gaming and productivity work, 3D design, 3D rendering, movie editing.

What does the the 3D cache do for the chip?

You get more fps in gaming, BUT your productivity workflow will diminish in performance.
7950x can reach 5.2GHz on all cores, 7950x3d can only get one core to 5.2GHz. turbo frequency for all cores in 7950x3d is 5GHz (lower than 7950x)

Since 7950x3d is not benchmarked yet, I give you 5800x and 5800x3d comparison.

AMD Ryzen 7 5800X3D vs AMD Ryzen 7 5800X

AMD Ryzen 7 5800X3D vs AMD Ryzen 7 5800X. Benchmark, test, review, comparison and differences between these CPUs in Cinebench 23 and Geekbench 5

www.cpu-monkey.com

You can see CineBench R23 score for 5800x3d is lower.

Not exclusively. Gaming will benefit like the 5800X3D does, but there are some compute tasks that will benefit as well.


This. If you look at W1zzard's comparisons you'll see the differences particular work loads have.

https://www.techpowerup.com/review/amd-ryzen-75800x3d/

The differences between the 7950X and 7950X3D will be similar.

Thanks @lexluthermiester
5800x wins in image editing, photogrammetry, text recognition (5.5% better), Encryption, file decompression (5.13% better), web browsing (6.273% better), rendering (7.4% better), PowerPoint (4.7% better), Excel (3.43% better), mp3 encoding (6.8% better)

5800x3d wins in File compression (1.356% better), image classification (1.91% better) and tensorflow (0.693% better)

apart from gaming, if there's any benefit to 3d cache, it performs <2% better. Otherwise higher clock speed of 5800x gives 5~7% improvement.

 

[TITAN RTX 4100]

7950 3Dx

No, it is actually called 7950X3D.

 

[Bill_Bright]

If there are other potential bottlenecks, you may see no performance differences at all. But since we don't know anything about the other components in this computer, we have no way of telling.

If you have a tiny water hose feeding a big pipe, replacing the big pipe with an even bigger pipe is not going to get you more water.

 

[lexluthermiester]

Thanks @lexluthermiester
5800x wins in image editing, photogrammetry, text recognition (5.5% better), Encryption, file decompression (5.13% better), web browsing (6.273% better), rendering (7.4% better), PowerPoint (4.7% better), Excel (3.43% better), mp3 encoding (6.8% better)

5800x3d wins in File compression (1.356% better), image classification (1.91% better) and tensorflow (0.693% better)

apart from gaming, if there's any benefit to 3d cache, it performs <2% better. Otherwise higher clock speed of 5800x gives 5~7% improvement.

That having been said, if the clock speeds were equal, the X3D models would be the very clear winners.

 

[OkieDan]

A ~200W PPT limit is a rather ideal limit for 7950x to keep it out of very power inefficient operating range. If both were limited to 200W it should benefit the x3d variant as far as all-core performance comparisons.

 

[A Computer Guy]

The problem I see at this point is that since AMD has confirmed that CCD1 (Vcache) will have similar hard Fmax ceiling as 5800X3D while CCD2 is just a normal (traditionally better binned?) CCD, AMD and Microsoft have a LOT of work to do on the AGESA/scheduler side to make this work. And lord knows software has always been both companies' pain point.

I see this too. Hope they can do something sensible and easy for the end user to override. One idea might be to peg applications to a CCD with default preferences. Games might get pegged to CCD1 w/ Vcache while other programs get pegged to CCD2. Then allow the system to remember what it did and the user to override which CCD to use and/or allow both CCD's to be used by the application. AMD should really get some development incentives together to increase adoption of the vcache by applications that could practically take advantage of it.