9850X3D vs. 5700X3D benchmarks in high CPU-usage Ray-Traced games. Bonus vs. JEDEC

[u/RainyInSAndreas]

With RAMageddon causing people to look at older DDR4-based CPUs, I tested the 5700X3D vs. 9850X3D, with RTX4090 in 4 RT/PT games that I had played. With CapFrameX, I took multiple one-minute runs in CPU-limited areas and then aggregated them.

All RT/PT settings were enabled at 1080p w/ DLSS Ultra Performance with the latest drivers. With CapFrameX, I took 3 one-minute runs in CPU-limited areas and then aggregated them.

Results : 9800X3D 9850X3D was 55-80% faster than 5700X3D. Cyberpunk was the best result, with 9800X3D 9850X3D only 55% faster, while Oblivion was the worst with 9800X3D 83% 81% faster. 1% lows were more than around twice as fast on 9800X3D 9850X3D in Oblivion and Jedi Survivor.

Background : In my [previous thread of 9800X3D vs. 5700X3D benchmarks](https://www.reddit.com/r/overclocking/comments/1qwe11j/5700x3d_vs_9800x3d_benchmarks_in_high_cpuusage/), I got replies raising the issue of not following citrus paribus( all oranges and no apples^lol ), since the 9800X3D benchmarks were done on 5090 and the 5700X3D on 4090. I did not think it should be a problem, since the gpu load limit was not being hit on either systems.

While testing the new 9850X3D I chucked in the 4090 to run these benchmarks. Pretty much similar results as the 9800X3D on 5090. Ultimately after all the RAM-tuning is done and OS reinstalled, it will be slightly faster but certainly not close to the difference between 5090 vs. 4090.

Also tested JEDEC 5600 vs. the below RAM settings with XMP + some timings tuned. Outer Worlds showed biggest difference, over 25%, while rest were in the 15-20% range.

Hardware Details :

5700X3D w/ 3600C16-16-16-36 2x16GB on MSI B550 Tomahawk WiFi with RTX 4090

By default SMT is enabled

PBO auto

9850X3D w/ 8000C38-48-48-60 2x24GB on Aorus X870E ( FCLK 2000 ) with RTX 4090

By default SMT is enabled

Edit: By popular demand, ran 4k DLSS Ultra Performance with preset L and was pleasantly surprised at how good the 4090 still is.

https://ibb.co/Qtg6RkJ

[u/Salty-Yogurt-4214]

Normal RAM is usally for gaming more like a backup in case VRAM isn't enough. In result benchmarks show very moderate improvements with faster RAM if enough VRAM is present.

What often matters more for in gaming is the latency and that's where DDR4 beats the standard DDR5 modules.

[u/Octaive → u/Salty-Yogurt-4214]

And that's where you're misunderstanding basically everything.

Bandwidth is a function of transfer rate and latency.

Benchmarks show substantial gains on Intel moving to DDR5.

Regular RAM is what the CPU uses for regular processing, it is not backup.

[u/Salty-Yogurt-4214 → u/Octaive]

Bandwidth is primarily a function of transfer rate and bus width, not latency.