Comparing RAM performance on the AM5 chipset
Comparing RAM performance on the AM5 chipset
To wrap up this discussion, here are my observations. The gap between the 2x 8GB and 4x 8GB configurations is clear. When running Cinebench 2024 and Cyberpunk 2077, the 2x 8GB consistently edged out the 4x 8GB by a slight amount. I also tested the latest 2x 16GB unit (rated at 6000 MT/s). In Cinebench 2024, 2x8GB achieved Multicore 783 and Singlecore 113; 2x8GB got Multicore 794 and Singlecore 115. For the 2x16GB, Multicore scored 836 and Singlecore 117. In Cyberpunk 2077 LOW Pre-set (no resolution scaling), 4x8GB reached A=150 FPS, M=113 FPS, while 2x8GB hit A=160 FPS and M=132 FPS. With the GPU as the limiting factor, the difference becomes minimal. Once you remove that bottleneck, the gap is apparent—especially in lower frame rates. In my situation, upgrading to the smaller configuration doesn’t seem necessary. But I figured it out just to be sure. Now, if you’re considering selling the 4x 8GB sticks, they probably aren’t in demand anymore.
Honestly Cinebench doesn't care for RAM speed, try linpack extreme if you really wanna test the RAM performance.
I understand there are more effective methods to assess the speed gap. My goal was to observe the real-world effect. Since I mainly use PC for gaming, I tested one of the tougher PC titles, measured the performance changes, and noticed a clear improvement—especially in FPS limits. That confirms my decision to upgrade from 4x8 to 2x16 setup.
If speeds match and one pair outperforms, the 2x16 setup should handle a single-rank configuration with 8GB DDR5 RAM—likely fewer DIMMs per stick, which might affect performance. That could be concerning if fewer memory dies mean reduced capacity or stability.
Noted earlier, testing the 4x8GB setup even though all four DIMMs were rated at 6000 MT/s only showed 3600 MT/s (with XMP profile enabled in BIOS). This means you likely won’t see a difference when using less than 16GB RAM, but you’ll notice the impact if they hit 3600 or 6000 MT/s. When I had just two slots filled with memory, performance was at 6000 MT/s right away, allowing me to take advantage of both higher capacity and speeds.