A test of the AMD Ryzen 9 7950X3D with 3D V-Cache has already made it into the public, namely in an AIDA64 memory benchmark with the new High Efficiency mode. There was also a CPU-z screenshot leak to go with it. By the way, you can also see two Ryzen CPUs from our own stock in the picture, but I can already spoil that this is not an NDA breach. Appetite with the help of similar images is always allowed 🙂
But back to the leak on Twitter: there we have, first of all, a screenshot from CPU-z and AIDA64 CPUID of the Ryzen 9 7950X3D 3D V-Cache CPUs, the fastest chip in AMD’s new lineup. The chip ran on the MSI MAG X670E Tomahawk board, which is said to offer out-of-the-box support for the Ryzen 7000 X3D CPUs and already runs the latest BIOS, so users don’t have to update the firmware like the rest of the AM5 motherboards. Only with the chipset driver you have to help a bit.
SMU 84.79.218 & AGESA 1.0.0.5c is coming. pic.twitter.com/XFVFHyZcY7
— chi11eddog (@g01d3nm4ng0) February 23, 2023
The CPU of the AMD Ryzen 9 7950X3D is based on the RPL-B2 stepping and was simply run out-of-the-box by default. The AMD Ryzen 9 7950X3D is the flagship and the first 16-core CPU with 3D V-Cache technology. The chip has a total of 32 threads, a total of 144 MB of cache (64 MB CCD, 64 MB V-cache + 16 MB L2), and a TDP of 120 W. As for the clock, the chip is specified with a base clock of 4.2 GHz, which is 300 MHz slower than the standard 7950X, but the boost clock is specified at the same 5.7 GHz. This should give us a clue as to why the TDP is 50W lower than the non-3D part. After all, we also know that the clock restriction only applies to the CCD with the V-cache and it will be interesting to see how AMD solves the optimal allocation to the respective cores after the launch.
There is also some new and exclusive performance data of the AMD Ryzen 9 7950X3D CPU in the AIDA64 Cache & Memory benchmark using the High-Efficiency mode enabled with the latest MSI AGESA 1.0.0.5c BIOS firmware. Tighter timings and better DDR5 memory performance are possible in High-Efficiency Mode. The AMD Ryzen 9 7950X3D delivers up to 17% more bandwidth in this mode and reduces latency by 10%. The performance data between Stock, EXPO and EXPO (with High-Efficiency Mode activated) are listed below:
AMD Ryzen 9 7950X3D CPU AIDA64 High-Efficiency Mode Test:
| AIDA64 | STOCK (DDR5-4800) | DDR5-6000 36-38-38-80 | DDR5-6000 36-38-38-80 (HIGH EFFICIENCY MODE) |
|---|---|---|---|
| Read (MB/s) | 61523 | 75890 | 87021 |
| Write (MB/s) | 64365 | 77819 | 91104 |
| Copy (MB/s) | 56922 | 68869 | 77087 |
| Latency (ns) | 83 | 68.9 | 62.2 |
The new performance mode really seems to offer much higher bandwidth and also improves latency, which should be beneficial for faster gaming performance. The AMD Ryzen 9 7950X3D and Ryzen 9 7900X3D will launch later this month on January 28 at prices of $699 and $599, respectively.
Source: chi11eddog
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