I expect a whole bunch of reviews to say it's basically the same as the simulated 7800x3d with some flavour added by mumbling about the benefit of it being a single chiplet and how its a much better gaming buy than either a 7900 or 7950 but still expensive and not a value for money part.
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Poll: Ryzen 7950X3D, 7900X3D, 7800X3D
- Thread starter kindai
- Start date
the review slides have been leaked
It's quite interesting to look at the amd 30 game benchmark slides and compare them between the two CPUs
I've skimmed over them and noticed that in some games, amd shows the 7950x3d performing 5-8% faster than the 7800x3d, there is also games where they show the 7800x3d performing 2-3% faster than the 7950x3d. The games which show the largest variance seem to be the games that are most latency sensitive and single thread heavy - for example in counter strike they show the 7800x3d losing to the 7950x3d by a good margin which suggests the 7800x3d has lower clock speed
Overall and slides suggest the 7950x3d is faster overall and the slides show that the 7800x3d loses to the 13900k in some games where the 7950x3d beats it
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Yeah but that's a full 7950X3D not a simulated 7800X3D by disabling the frequency chiplet.
It will be interesting to see the reasons why a full 7950X3D can win and why it can lose against a 7800X3D. That will probably be a lot more interesting than the regular review of a 7800X3D.
Cheers, next up is curve optimizer, though wanted to test stability for a few weeks (plus been enjoying RE4 remake too much!) before fiddling with that!
Had fun building, testing and comparing my 13900k and 7950X3D with my 4090 Strix the last week. TLDR is, pretty much identical gaming performance overall, though with the 13900k consuming 100-180W (depending on game) and the 7950X3D 60-70W. Amazing level of efficiency and IMO AMD win this round by a large margin.
Had no issues, crashes or drama of any kind, just Intel levels of stability.
Few pics
I had to do a double take when I realised it was Dave that went AMD
.. Nice setup and happy to see you are seeing the benefits 
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Soldato
Am I the only one that dislikes the IHS on the Zen 4 Ryzen chips? It's just so... fiddly. I don't see what purpose the design serves, other than possibly reducing surface area.
I prefer it over Intel's LGA1700 - having to spend £10-50 (depending which type you get) on a contact frame for optimal performance/thermals is not a good thing.
Soldato
@LtMatt You have TLOU? Up for some testing? Im interested how the 3d CCD compares to the non 3d in this game. It's the heaviest - in terms of CPU - game i've played. It dwarfs cyberpunk in CPU usage and power draw
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Soldato
I've not used a LGA1700 CPU, but that doesn't sound good either. But that does make Zen4's good. What was wrong with Zen3's design?
Zen3 (AM4) had pins on the CPU, this caused many broken CPU's (bent pins) due to user error/accidents etc. AM5 CPU's moved to LGA (no pins on CPU, pins on motherboard socket) and have different physical characteristics, so required a new IHS design. Lots of surface PCB mounted components as well. Also complicated by the fact that they wanted to maintain cooler compatibility with AM4, so had to make it thicker/taller than it needed to be perhaps.
It works well in design though, as long as you don't put too much thermal paste on, or things will get messy
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Soldato
I just don't know why they needed the cutout sections.Zen3 (AM4) had pins on the CPU, this caused many broken CPU's (bent pins) due to user error/accidents etc. AM5 CPU's moved to LGA (no pins on CPU, pins on motherboard socket) and have different physical characteristics, so required a new IHS design. Lots of surface PCB mounted components as well. Also complicated by the fact that they wanted to maintain cooler compatibility with AM4, so had to make it thicker/taller than it needed to be perhaps.
It works well in design though, as long as you don't put too much thermal paste on, or things will get messy
The cut-outs are because of the need to work around the surface mounted components.
Soldato
Doesn't look like there's anything at the "top" that they have to work around. Could they not have just made it a bit smaller so those bits are outside of the IHS?
Yeah it'd reduced the surface area a little more but it'd make it less fiddly. They don't seem that concerned about surface area anyway.
This. I mean i am running 9980xe at 4.6ghz all cores and ut just doesnt have the grunt anymore to compete with current gen cpus especially when they are running near 6Ghz.That combined with the massive IPC gains since means with a 4090 there can easily be 20-30 fps difference in games.
Don
I can't see the word Intel in the title, so why is there constant back and forth about Intel this and Intel that?
Associate
Ive never really understood tech tribalism.
Soldato
Oh plus one for this. Especially at 4k max settings please.
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100%, go with whatever suits your needs. It's the same with the red vs green but anyway I digress.
I was hoping we'd have at least some more info on the 7800X3D now but I guess it's locked down tight until the 6th. Why couldn't they do it in the financial year
Hoping to snag a preorder asap, but we'll see if the launch is as 'messy' as the 79XX.
Soldato
I'm still undecided if it's worth it purely for 4k gaming from a 7600x. I think its a average uplift of +9% according the simulated results.