ASUS ROG Engineer Demonstrates DDR5 8800 MT/s “Gear 2” UDIMM Having Better Performance & Latency Than 9600 MT/s “Gear 4” CUDIMM

DDR5 Gear 2 performs better than Gear 4 memory settings in both latency and performance departments on Intel Z890 motherboards.

High memory frequency with DDR5 CUDIMM on Intel and AMD platforms doesn’t favor performance or latency

In recent weeks, we have seen a plethora of CUDIMMs being launched. Corsair, G.Skill, Colorful, and many more manufacturers introduced their own CUDIMM DDR5 memories for Intel’s Z890 and AMD X870/X870E platforms that seek to enhance the overall performance of the system.

Some overclockers already broke world records by breaking the 10000 MT/s and 12000 MT/s marks, but as we said previously, we are yet to see the real-world impacts of these incredibly high transfer speeds. Fortunately, we did get one from none other than a ROG Engineer himself, who tested and compared CUDIMMs at different frequencies as well as a UDIMM.

The platform used was the ROG Maximus Z890 Apex motherboard, which is a world record holder for the Core Ultra 9 285K overclock. With different DRAM Frequency Ratio, he tested 5 different CUDIMM speeds and 1 UDIMM(Bypassing the CKD on the CUDIMM). If you are aware, ASUS Z890 motherboards have set the DRAM Frequency Ratio to Gear 4 by default or 1:4. This is done to improve the performance out of the box as previously announced by ASUS itself.

However, there is an option in the BIOS that lets users change the DDR5 ratio to 1:2, also known as Gear 2. As per the memory-oriented tests, it was found that Gear 2 yielded not only better performance than Gear 4 but also lower latency. CUDIMM clocked at 9000…