While this is not a comprehensive review, it provides a preliminary look ahead of the official testing, including comparisons to rival CPUs.
XanxoGaming obtained a sample of the 5800X3D CPU over two weeks before its official release (April 20th). As it turns out, this CPU is rather easy to obtain in Peru, despite the fact that AMD has banned XanxoGaming and they are not even supplied a sample through official means.
The AMD Ryzen 7 5800X3D is a new 8-core CPU based on Zen3 architecture and unique 3D V-Cache technology, which adds a 64MB layer of L3 cache directly on top of the computing chiplet. With such a huge cache, gaming performance is supposed to improve by 15% on average (at least officially), although it shouldn't show substantial differences in synthetic testing like the ones presented by XanxoGaming.
In most single and multi-core tests, the forthcoming CPU performs as well as a Ryzen 7 5700X. This should be due to the Ryzen 7 5800X3D's decreased clock rates compared to the earlier Ryzen 7 5800X. For Blender, the Ryzen 7 5800X3D outperforms the 5800X by a slight margin. However, neither Cinebench R23 nor CPU-Z or Geekbench 5 results are very noteworthy. This isn't surprising, given AMD has said that the 3D V-Cache doesn't provide much speed to most apps. In regular software, the slower clocks seem weird, but XanxoGaming says they think a better UEFI/AGESA may enhance performance over time.
In Geekbench 5.4.4, the CPU got 1639 points for single-core and 10498 points for multi-core. This is lower than the average Geekbench R7 5800X score (1671/10339 points). It also gets 617 and 6506 points on the CPU-Z benchmark, lower than the i9-12900K reference data.
Further results, including 1080p gaming testing are too be posted later.
Update: The Ryzen 7 5800X3D performs admirably in the initial gaming benchmarks. So yet, the website has only tested Shadow of the Tomb Raider at 720p with customized extreme settings (ultra shadows). As the resolution increases, the disparities between the CPUs become fewer. The 5800X3D with RTX 3080 Ti GPU is actually quicker than the i9-12900KF processor with RTX 3090 Ti, indicating this is a CPU-bound test. XanxoGaming is presently testing 11 games at 1080p. The testing are done, but the data must be compared to an Intel system, which may take time. But we should see more findings soon.
The Core i9-12900K averages roughly 190 FPS in the test, which they use as their benchmark. The Core i9-12900KS achieves roughly 200 FPS, which is a little more than a 5% gain. Ryzen 7 5800X3D an average FPS of 230. That's a 20% boost over the Core i9-12900K and a 15% increase over the Core i9-12900KS. According to the leaker, additional benchmarks will get posted, at 1080p at Ultra settings.
AMD Ryzen 7 5800X3D gets benchmarked ahead of embargo lift (updated)
