Intel Core Ultra 9 285K and DDR5 Memory Performance: A Deep Dive
Following the launch testing of Intel’s Core Ultra 9 285K desktop processor, we have been closely exploring the performance of DDR5 memory in relation to CUDIMMs. This exploration was particularly focused on how the Core Ultra 9 285K performs with various memory configurations under Linux on Ubuntu 24.10. Here’s an in-depth look at what we discovered.
Improved BIOS Compatibility with ASUS ROG MAXIMUS Z890 HERO
One of the crucial findings since our initial testing of the Intel Core Ultra 9 285K is the significant improvement in stability and performance of the ASUS ROG MAXIMUS Z890 HERO motherboard with the 0806 BIOS. The previous BIOS version, 0805, was causing issues such as application hangs and segmentation faults with DDR5-8000 memory.
According to the latest ASUS release notes, the 0806 BIOS version comes with enhanced compatibility for high capacity DIMMs alongside an updated Intel CPU microcode. These changes have made a notable difference in stability, making the 0806 BIOS a more reliable choice for use with the Intel Arrow Lake processors.
The Advent of CUDIMMs
Arrow Lake introduces an exciting new feature with support for CUDIMMs (Client Kit DDR RAMs). These memory modules include a client clock driver (CKD) that re-drives the clock signal, improving signal integrity and reducing jitter. The potential of CUDIMMs lies in their ability to enable higher memory speeds, with several vendors indicating DDR5-9600 and even DDR5-10000 CUDIMMs slated to hit the market later this year or early 2025.
Current Availability of CUDIMMs
While the high-speed CUDIMMs are yet to be mainstream, Crucial has already launched a 32GB DDR5-6400 CUDIMM kit that we used for our testing. The kit (product code: CT2K16G64C52CU5) retails for $169 USD and comes with a CAS latency of 52. Although DDR5-6400 speeds aren’t particularly thrilling, they provided a useful base for testing the compatibility and interplay between the Intel Core Ultra 9 285K and CUDIMMs.
Various Memory Configurations for Testing
We subjected multiple DIMMs to testing, including:
- 2 x 16GB DDR5-6000 Crucial CP16G60C36U5W.M8D1
- 2 x 16GB DDR5-6400 Micron CT16G64C52CU5.M8D1 CUDIMM
- 2 x 32GB DDR5-6400 Corsair CMK64GX5M2B6400C32
- 2 x 24GB DDR5-7000 Corsair CMK48GX5M2B7000C40
- 2 x 16GB DDR5-8000 Corsair CMH32GX5M2X8000C36
- 2 x 24GB DDR5-8000 Corsair CMP48GX5M2X8000C38
Benchmark Results
Using our Intel Core Ultra 9 285K paired with the ASUS ROG MAXIMUS Z890 HERO, we ran a series of tests on these varying DIMMs configurations, primarily using their XMP 1 profiles. The results illustrate how different memory configurations can impact performance in diverse workloads.
To explore these benchmarks further, we invite you to view the full results and graphs here.
Conclusion
The combination of the Intel Core Ultra 9 285K and DDR5 memory, particularly in the evolving context of CUDIMMs, offers exciting possibilities for the future of desktop hardware. While the initial experience with high-speed DDR5-8000 memory has been challenging, the recent update to the ASUS ROG MAXIMUS Z890 HERO BIOS (0806) has greatly improved stability and reliability. As CUDIMMs begin to hit the market with higher speeds, we can expect even more advanced memory configurations that will push the boundaries of what’s possible for desktop processors.
For the latest updates and more information on Intel Arrow Lake and DDR5 memory performance, keep tuning in to Archynetys.
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This article is part of our in-depth series exploring the world of Intel Core processors and their memory performance. Stay tuned for more updates and reviews.
Note: This article includes direct links to manufacturer-specific content and high-resolution images relevant to the tested components. These links are essential for users to explore and verify the information provided.
