Question CPU and RAM question for new gaming build

[rds1220]

How does the newer Ryzen 7 7800X3D compare to the older Ryzen 7 9800X3D. From doing some recent reading it sounds like the 9800X3D is a beast of CPU for gaming which is the main purpose of this new build. Also what RAM speed should I get? I've been out of the loop for a while. Last I remember early Ryzen CPU's needed faster RAM speeds to make the most of the architecture. Is this still the case?

 

[Darkbreeze]

There is no 9700X3D. There IS a 7900X3D, but IT is the "older CPU", not the 9800X3D. If you want the top gaming CPU, then that is the one to buy. There is nothing right now that beats it overall in gaming performance.

As for the memory, ALL platforms tend to perform better with faster memory if it is supported. It just makes a little more difference on AMD than it does on Intel platforms. DDR5 6400MT/s seems to be the sweet spot for the 9800X3d. If you can get a kit with lower latency, even better.

 

[rds1220]

There is no 9700X3D. There IS a 7900X3D, but IT is the "older CPU", not the 9800X3D. If you want the top gaming CPU, then that is the one to buy. There is nothing right now that beats it overall in gaming performance.

As for the memory, ALL platforms tend to perform better with faster memory if it is supported. It just makes a little more difference on AMD than it does on Intel platforms. DDR5 6400MT/s seems to be the sweet spot for the 9800X3d. If you can get a kit with lower latency, even better.

I meant AMD Ryzen 7 7800X3D

 

[Darkbreeze]

The 9800X3D has about 18% better single core performance than the 7800X3D and about 16% better multicore performance. But that's in primarily standard type processes and benchmarks.

For gaming performance, depending on the game it can have anywhere from 5-20% faster performance while most reviews show around an 11% average advantage including this review with a 30 game comparison.

AMD Ryzen 7 9800X3D vs. Ryzen 7 7800X3D

With AMD's Ryzen 7 9800X3D recent release, we're diving into its gaming performance, comparing it head-to-head with the 7800X3D across 45 games. Let's see how this new...

www.techspot.com

 

[rds1220]

There is no 9700X3D. There IS a 7900X3D, but IT is the "older CPU", not the 9800X3D. If you want the top gaming CPU, then that is the one to buy. There is nothing right now that beats it overall in gaming performance.

As for the memory, ALL platforms tend to perform better with faster memory if it is supported. It just makes a little more difference on AMD than it does on Intel platforms. DDR5 6400MT/s seems to be the sweet spot for the 9800X3d. If you can get a kit with lower latency, even better.

Thanks but the 7900X3d seems like overkill for just playing games. I can't imagine games right now and in the near future will make use of 12 cores 24 threads.

 

[Darkbreeze]

The question isn't whether "games" can use all those cores/threads, the question is, do you do OTHER stuff while gaming, like recording, streaming, browser tabs, mods, overlays, etc., because IF you do, then your system can most definitely make use of them in a way that makes the overall experience much better. You must remember also, when gaming, the game engine by far isn't the only process running. Windows itself can and does use six or more cores, by itself, for it's background processes and that doesn't account for any other applications you may have installed that may want to use system resources while you think you're "just gaming".

So unless you plan to run a lab clean installation with nothing other than Windows and one game, the 6-8 cores that most modern AAA games of any reasonable amount of difficulty will use are likely the least of what the system can benefit from.

 

[logainofhades]

Thanks but the 7900X3d seems like overkill for just playing games. I can't imagine games right now and in the near future will make use of 12 cores 24 threads.

There are games that can use that much now. Not many, but they do exist. The 7900x3d's problem is only one of the 6 core dies has the 3d V-cache, so I would shy away from them for that reason alone. It is rumored that the upcoming 9900x3d and 9950x3d will have 3d V-cache, on both dies.

 

[Darkbreeze]

There are games that can use that much now. Not many, but they do exist. The 7900x3d's problem is only one of the 6 core dies has the 3d V-cache, so I would shy away from them for that reason alone. It is rumored that the upcoming 9900x3d and 9950x3d will have 3d V-cache, on both dies.

Apparently, they will not have it on both dies.

https://www.tweaktown.com/news/1018...ary-2025-only-one-ccd-has-3d-cache/index.html

 

[ilukey77]

View: https://www.youtube.com/watch?v=V9xN7DygLWE

just watched this and the 9800x3d does do alot better in 1080p obviously but also does well in 1440p according to the amount of games shown..

Call me impressed with 1440p performance over the 7800x3d with the games shown ..

normal ddr5 cl30 6000 is still the sweet spot and ive seen benchmarks where 8000 ddr5 is very expensive for little to no gains !!

Im going to wait for9900x3d and 9950x3d just because this will be the last system upgrade for some time once i go a 5090 !!

 

[ilukey77]

It is rumored that the upcoming 9900x3d and 9950x3d will have 3d V-cache, on both dies.

yet other rumours the gamer meld channel said with a known leaker NO its still single ccd cache stacking ..

At this point best to wait till release for the actual specs im hoping for dual but MEH who really knows accept for AMD!!

 

[logainofhades]

yet other rumours the gamer meld channel said with a known leaker NO its still single ccd cache stacking ..

At this point best to wait till release for the actual specs im hoping for dual but MEH who really knows accept for AMD!!

I do know it is something AMD has been at least testing. When GN visited AMD they had an engineering sample of what would have been a 5950x3d.

 

[ilukey77]

I do know it is something AMD has been at least testing. When GN visited AMD they had an engineering sample of what would have been a 5950x3d.

Yes I’ve watched that video ..

I think that it came down to scheduling or something that made the 7950x3d just a more core 7800x3d with little to no gains in gaming despite having more cache ..

That’s why I’m quietly optimistic the 9950x3d will be better but I think ( from some rumours I’ve seen) we may need to wait till 10000series before they sort it they are going to to use a different chiplet cache design for 10000!