Review Zen4 3D review thread

[Hitman928]

Thread to focus on Zen4 3D cache CPUs.

New gaming king (as most expected), though the 2 CCD 7950x3d does seem to have issues with some games, more than I would expect of it getting stuck on the "wrong" CCD. I imagine it will get cleared up with subsequent updates but we'll see. Simulated 7800X3D showed no such issues and overall has the gaming lead (real product might be slightly slower though depending on in game clocks).

Computerbase also has the 7950x3d as the gaming champ. They (and TPU) also show that efficiency while gaming is extremely good.

Ryzen 9 7950X3D im Test gegen 5800X3D und 13900K(S)

Zen 4 3D ist da. Im Test erweist sich AMDs Ryzen 9 7950X3D gegen 7950X, 5800X3D und Core i9-13900K(S) als schnell und effizient.

www.computerbase.de

Just to toot my own horn a little, it landed spot on with my prediction of fastest gaming CPU but not significantly so over a 13900k on average, but with much higher efficiency.

Additional reviews, will add more later.

AMD Ryzen 9 7950X3D processor review

We review the new Ryzen 9 7950X3D processor from AMD. The much-anticipated processor series comes with an added cache that will help predominantly with gaming. This processor series was designed for ...

www.guru3d.com

AMD Ryzen 9 7950X3D Review - Best of Both Worlds

The Ryzen 9 7950X3D is the spearhead of the AMD Zen 4 X3D lineup. In our performance review we test AMD's new 16-core flagship with dozens of applications and 14 games at up to 4K, to see whether AMD can take the performance crown from Intel, how power consumption is affected, and what can be...

www.techpowerup.com

The AMD Ryzen 9 7950X3D Review: AMD's Fastest Gaming Processor

www.anandtech.com

Gamers Nexus

AMD Ryzen 9 7950X3D Linux Performance Review - Phoronix

www.phoronix.com

AMD Ryzen 9 7950X3D Review: AMD Retakes Gaming Crown with 3D V-Cache

AMD takes a bite out of Raptor Lake.

www.tomshardware.com

AMD Ryzen 9 7950X3D review: Team Red retakes the lead with its best CPU ever

The AMD Ryzen 9 7950X3D is the best gaming CPU there is, and it's not close

www.techradar.com

 

[maddie]

Well, significant is relative I guess. It's still a decent sized piece of silicon on a pretty modern process and a decent cost adder. There also must be some kind of bottlenecking in production, otherwise it's hard to imagine why they wouldn't sell a 7950X3DX2 XTX with cache dies on both CCDs at a halo price point especially given all the effort they needed to spend on core parking during gaming.

The 7900X makes sense as a cut down part, it's obviously worse than a 7950X but outside of a few niche cases it's better in every way than a 7800X. That's not going to be the case going forward, as a gaming CPU the 7900X3D is functionally a 6 core chip and will likely be outperformed by the 7800X3D in some games where you have 8 cores on the single cached CCD.
Why sell fully enabled dies in the 7800X without the 3D cache, but then add cache to cut down dies for the 7900X3D. It's just weird positioning and I'm not sure who the market is for it. If you're primarily gaming, you can get a 7800X3D with probably better performance and save $150. If you can actually use all those cores an extra $100 will step you up to the 7950X3D.

Frequency/power issues still an item with SOIC V-cache. The 7800X3D will not have any higher frequency cores unlike the other choices, and the benchmarks should be a bit unkind, outside of gaming.

AMD: You can have it all. Best gaming and highest clocked Zen 4 cores in one CPU.

 

[MrTeal]

My take on it. The whole v-cache thing is to make AMD the gaming king for desktop, for server it has another use. So for desktop, they are now the king. Why spend extra money when it will not change this status ?

Yeah, I'd agree with that, gamers really seem to be the target market which is why it's such a strange product. The 7800X3D will probably be a good gaming CPU. 7900X3D is going to be a worse gaming CPU and cost $150 more.

Outside people who don't want to wait for the 7800 and people who can't find a 7950 and don't want to wait, who's buying a 7900X3D?

 

[IEC]

7800X3D is my next stop.

I have a 7900 XTX on the way because I actually got it for slightly under MSRP at $990 shipped. XFX Merc model.

 

[Joe NYC]

Frequency/power issues still an item with SOIC V-cache. The 7800X3D will not have any higher frequency cores unlike the other choices, and the benchmarks should be a bit unkind, outside of gaming.

AMD: You can have it all. Best gaming and highest clocked Zen 4 cores in one CPU.

Tom's Hardware provides some additional information on the V-Cache (pages 2 and 3). How it differs from Zen 3, that it split power and signal TSVs and move power TSV to l2 area.

Also, some individual testing of CCDs under various conditions.

So for anyone who "skipped to the chase" (the benchmark results), this one deserves a 2nd read:

AMD Ryzen 9 7950X3D Review: AMD Retakes Gaming Crown with 3D V-Cache | Tom's Hardware (tomshardware.com)

 

[biostud]

I also think the heterogeneous layout works as a test vehicle for future CPUs, so AMD can get data to improve those.

 

[Joe NYC]

I also think the heterogeneous layout works as a test vehicle for future CPUs, so AMD can get data to improve those.

I hope one of the tech sites will do a side by side comparison of CCD0 (V-Cache) vs. CCD1 (non-V-Cache) only tests (with the other disabled) fixed to the same max clock of say 4 GHz.

This way, we will finally get the accurate picture of the L3 contribution to performance, as opposed to comparing them at different frequencies, which obfuscates the answer to the question...

 

[Det0x]

I hope one of the tech sites will do a side by side comparison oc CCD0 (V-Cache) vs. CCD1 (non-V-Cache) only tests (with the other disabled) fixed to the same max clock of say 4 GHz.

This way, we will finally get the accurate picture of the L3 contribution to performance, as opposed to comparing them at different frequencies, which obfuscates the answer to the question...

As far as i know, you cannot set a static clock on X3D CCD.
But V-cache die have fmax @ 5250mhz.. So it can only be done if you have low temps and a aggressive allcore PBO CO value that make CCD0 run flat out @ 5250mhz all the time.

 

[nicalandia]

7900X3D vs 13900K Linux performance nearly 300 tests.





7900X3D vs 13900K

 

[biostud]

How is the efficiency compared to the M2 CPUs?

 

[AdamK47]

I was playing through Kingdom Come Deliverance with a 7950X before getting my 7950X3D. Ultra settings at 4K. There were some trouble spots in towns/cities that would cause the FPS to dip to below 60 FPS. 53 to 55 FPS is some spot and just hang there. Not a big deal, but I could feel it. This was despite having a 4090.

It was evidently CPU bound. The 7950X3D handles those spots much better. It does dip below 60, but only as content streams in. Sometimes to 58. It bounces back up from there when done loading.

 

[IEC]

Looks like 7xx0 X3D chips have 3 different processes used. 5nm for CPU chiplets, 6nm IOD, special 7nm SRAM optimized process for cache.

Tom's Hardware

First, AMD made the 7nm SRAM die smaller, so it now measures 36mm2 compared to the previous-gen's 41mm2. However, the total number of transistors remains the same at ~4.7 billion, so the new die is significantly denser than the first-gen chiplet.

As we saw with the first-gen SRAM chiplet, the 7nm L3 SRAM chiplet has incredible transistor density — we're looking at almost 3x the density of the first-gen 7nm compute chiplet, and surprisingly, the 7nm SRAM chiplet is significantly denser than the 5nm compute chiplet...

As before, the extra latency from the additional L3 SRAM cache weighs in at 4 clocks, but the bandwidth between the L3 chiplet and the base die has increased to 2.5 TB/s, a 25% improvement over the previous 2 TB/s peak.

 

[CP5670]

I was playing through Kingdom Come Deliverance with a 7950X before getting my 7950X3D. Ultra settings at 4K. There were some trouble spots in towns/cities that would cause the FPS to dip to below 60 FPS. 53 to 55 FPS is some spot and just hang there. Not a big deal, but I could feel it. This was despite having a 4090.

It was evidently CPU bound. The 7950X3D handles those spots much better. It does dip below 60, but only as content streams in. Sometimes to 58. It bounces back up from there when done loading.

I've seen this type of behavior too. Specific maps or areas with lots of NPCs cause framerate drops in games that generally run at 120+fps. It doesn't appear in benchmarks that don't include those particular maps.

 

[A///]

If you are a high end gamer, no amount of money counts ! Look at 4090's ! And people buying the 13900k when it takes twice the power of the 7950x and beats it in games by just 2-5%. The new gaming champ is here and gamers will pay almost anything to get the best.

As I said in the past, the only reason to buy a budget system like Intel at this point is if your workload revolves around software being optimized for Intel. Really wondering what Intel has in stock outside of the same hashed over rumors these past few months.

I've found some good high end RAM today that's come way down in price. I might pick it up and clock it down for my 7950X3D build and I can reuse it at potentially the stock speed with Zen 5 or even OC it a bit depending on how the IF is developed for Zen 5 since there's "big changes" acomin.

 

[A///]

I just got a 4090 for $1730 delivered. $1650 MSRP. I'd say its about there.

Nice, what model? Was it you who I told months ago that around March that supply should suddenly get better? And here we are. I was set on the xtx but that seems to be a money pit. Don't know if a 4090 or ti is in stock for me, but I may end up picking an MSI Suprim in about a month. I'm currently doing some house remodeling and everything is a dusty mess.

 

[Markfw]

Nice, what model? Was it you who I told months ago that around March that supply should suddenly get better? And here we are. I was set on the xtx but that seems to be a money pit. Don't know if a 4090 or ti is in stock for me, but I may end up picking an MSI Suprim in about a month. I'm currently doing some house remodeling and everything is a dusty mess.

PNY. Very happy so far.

 

[A///]

PNY. Very happy so far.

They're a good brand. They were or still are the only company allowed to make the quadros. I believe they also manufacture their own silicon or had a deal with micron. I should be done with my remodeling around june and will get the Zen then but admittedly seems foolish at that point if zen 5 is coming out early next year. I could always sell it off i suppose.

 

[igor_kavinski]

if zen 5 is coming out early next year.

Has Zen 5 even taped out?

 

[Racan]

For profanity removed and giggles

LoserBenchmark Zen 4 3D “review” 🤭

The 7000X3D CPUs have the same core architecture as the rest of the 7000 series but they have one group of eight "3D" cores with extra cache. The “3D” cores cost more and run at 10% lower clocks. For most real-world tasks performance is comparable to the 7000X variant. Cache sensitive scenarios such as low res. canned game benchmarks with an RTX 4090 ($2,000) benefit at the cost of everything else. Be wary of sponsored reviews with cherry picked games that showcase the wins, ignore frame drops and gloss over the losses. Also watch out for AMD’s army of Neanderthal social media accounts on reddit, forums and youtube, they will be singing their own praises as usual. AMD continue to develop “Advanced Marketing” relationships with select youtubers in the hope of compensating for second tier products with first tier marketing. PC gamers considering a 7000X3D CPU need to work on their critical thinking skills: Influencers are paid handsomely to promote overpriced products. Rational gamers have little reason to look further than the $300 13600K which offers comparable real-world gaming and better desktop performance at a fraction of the price. Workstation users (and RTX 4080+ gamers) may find value in higher core CPUs such as the 16-core $400 13700K. Despite offering better performance at lower prices, as long as Intel continues to sample and sponsor marketers that are mostly funded by AMD, they will struggle to win market share. [Mar '23 CPUPro]

 

[Timmah!]

Wow. If i was not aware of similarly unhinged media, except in favor of AMD, i guess i would be surprised by such level of unprofessional behavior.

 

[mikeymikec]

Unless I'm reading the OP incorrectly, the 7xxxX3D hasn't fared well against the 5800X3D at all. Maybe software/driver optimisations will help?

 

[igor_kavinski]

the 7xxxX3D hasn't fared well against the 5800X3D at all.

Can you share the graphs that show that?

 

[inf64]

Loserbenchmark guy has completely lost his mind. He and CapFrameX tard are holding hands and coping hard after X3D launch.

 

[biostud]

Based on Techspots average numbers the simulated 7800X3D is 22% faster than 5800X3D and 1% low is 27% higher.

 

[IEC]

Loserbenchmark guy has completely lost his mind. He and CapFrameX tard are holding hands and coping hard after X3D launch.

It goes beyond bias and has to be attributed to malice at this point. If Intel released a 14900X3D and it was the clear winner for gaming while using 1/2 the power of the nearest competitor... I would buy it. Their reaction tells me they probably have undisclosed financial dependencies...

 

[biostud]

It goes beyond bias and has to be attributed to malice at this point. If Intel released a 14900X3D and it was the clear winner for gaming while using 1/2 the power of the nearest competitor... I would buy it. Their reaction tells me they probably have undisclosed financial dependencies...

Exactly, if you don't buy the "best" on the market you encourage bad products to be produced. What is best vary on your needs though.