8400mhz CL 40 compared to 7200mhz CL34
8400mhz CL 40 compared to 7200mhz CL34
I wouldn't choose a faster model just for the sake of higher latency, since speed improvements won't really change FPS. If you need extra space, grab the 6000 CL30 at 32 GB (SP064GXLWU60AFDF). It's available on sale through PCPartPicker. For gaming, it's not necessary, so I'd go with the Silicon Power XPOWER Zenith RGB Gaming 64 GB RAM.
Intel faces challenges achieving 6400mhz or manual tuning; these speeds are rarely utilized. Luckily you hit 7000mhz, but it doesn’t significantly boost performance since they can’t leverage those gains effectively. Stick with a 6000 cl30 RAM for better results. A 7800x3d offers more FPS and is a superior gaming CPU compared to the 14900ks. Why invest in a mid-range PC price when a 250$ Z790 provides similar looks without real performance gains? It lacks meaningful speed improvements and adds unnecessary software bloat that hurts performance. You need a balance of both components.
8400 would offer better performance but tends to be less stable unless your body mass index and motherboard match. You'll also need the Z790 Apex Encore, which supports two slots or one DPCM board, unlike the Z790 formula that works with four slots. The Z790 formula can't match the speeds of the 8400. With a 8400, you'll likely need to adjust voltages and timings for stability; stock XMP settings probably won't suffice.
Opt for lower timing and latency for better performance. Achieving very high frequencies like DDR5-8400 usually requires manual adjustments and overclocking, which may not yield consistent results. You might end up settling for speeds between 6000 and 7200 MHz instead of the ideal 8400 MHz. Gains in FPS won't be proportional to the frequency change. The jump from 48GB to 96GB storage is significant—choose the capacity that fits your needs. If you're looking for a balanced option, consider DDR5-6400 or similar models with CL30/CL32 support, which could offer a more stable and efficient experience.
If you need to choose, 6000 CL30 or 6400 CL32 seem reliable without extra work. The 7200 speed range is uncertain depending on your memory controller—about a 90% chance of XMP support, which is good but not guaranteed. The 8400 model rarely works with most CPUs. Above 6400, gains start to fade. Generally, faster RAM helps, and since CAS latency is expressed in cycles, 7200 CL34 and 8400 CL40 are comparable in real-world performance. It's more about dependability than raw speed.