Unlimited Core i9-13900K tested
A full review of a retail version of the Core i9-13900K processor, the Raptor Lake desktop flagship CPU that is supposed to come out next month, can be found on Bilibili.
The review is a collaboration between ECSM_Official and oneRaichu, and is divided into few parts. Naturally, we won’t spoil everything here and encourage readers to check out the full review for themselves.
Officially, Intel will announce a new series of desktop processors on September 27 at the Innovation event. The timing of the reviews is not confirmed yet, but we are probably still a few weeks away from the official 13th Gen Core/Z790 tests. So this assessment is probably the closest we get to something that is considered a review at this stage.
The reviewers actually had access to the Intel Z790 motherboard and tests were performed. However, they are under embargo and have not been shared yet (your review will be updated after the NDA is finalized). As crazy as it sounds, their i9-13900K tests aren’t under embargo, presumably because the CPU was sourced without Intel’s help and an older Z690 motherboard was used.
The CPU was compared to the Core i9-12900KF Alder Lake CPU running with DDR5-6000 CL30 or DDR4-3600 CL17 memory. The system was also equipped with the NZXT Kraken X73 AIO cooler, while the ASRock Z690 Taichi Razer Edition motherboard was updated to the latest BIOS 12.01.
Intel i9-13900K has more efficient cores than 12900K and higher clocks. The CPU boosts up to 5.8 GHz with up to 2 cores (Thermal Velocity Boost) and up to 5.5 GHz with 3 to 8 cores. By comparison, the i9-12900K has maximum clock rates of 5.2 GHz and 4.9 GHz for the same number of active cores.
The Raptor Lake CPU supports faster JEDEC DDR5 memory specifications by default (5600 MT/s), while the Alder Lake was “capped” at 4800 MT/s. Naturally, both CPUs support the DDR4 standard and both can use overclocked memory.
We’ll jump right into performance testing and leave the memory, core-to-core latency, and performance test for you to check. ECMS is planning two tests with i9-13900K: with unlimited power and with PL2 mode locked at 253W. The part with ‘official’ PL2 will be shared later.
In Cinebench R23 tests, Core i9-13900K is 13% faster with Performance cores (Raptor Cove) compared to 12900K (Golden Cove). Interestingly, even the performance of the Efficient cores has increased by 14%, even though the same architecture (Gracemont) is used. It is worth noting that not only has the frequency of the Raptor Lake CPUs been increased, but also the size of the L3 cache. ECSM confirms that with unlimited i9-13900K it can break 40K points in Cinebench R23, which is 47% higher than 12900K with unlimited power.
In another popular test, CPU-Z, the i9-13900K scores 945 and 16877 points in single-threaded and multi-threaded tests. That’s 14.5% and 49% more performance than the Alder Lake CPU, respectively.
On average the Unlimited i9-13900K is 41.78% faster than the 12900K. Depending on a test, which may or may not benefit from increased multi-threading performance, the improvement ranges from 0.33% to 76.72% over Alder Lake.
Reviewer concluded that i9-13900K offers 10% higher frame rates than 12900K in CPU bound games (CSGO, Ashes of the Singularity), but also improves frame times for slower frames by 0.1 %. Below is CSGO performance with unlimited i9-13900K and i912900K running on DDR5 and DDR4 memory:
ECSM will provide more test results later: with the default PL2 limit and later on the Z790 motherboard. The bottom line is that i9-13900K has 12% more single-threaded and multi-threaded performance ‘greatly improved to compete with AMD Zen4’.
Many thanks to Alienxzy for the tip!