Searching for suitable options for 9950x3d with an 870E motherboard.
Searching for suitable options for 9950x3d with an 870E motherboard.
Looking for a ready-made setup but aiming for the optimal M.2 configuration with AMD 9950x3d. Primarily focused on software dev, 3D rendering, and machine learning—expecting at least an RTX 5090 paired with a couple of M.2 SSDs, preferably PCIe 5 for maximum performance. Since the GPU will handle ML workloads, I need a board that supports integrated GPUs without contention. Some boards offer multiple PCIe 5 slots, which should be fine. A 10Gb Ethernet is nice but not essential. Memory requirements are high—ideally 96GB minimum, preferably 128GB. I'm trying to balance quad-channel usage with dual M.2 sticks to maximize speed. Budget isn't the main issue; avoiding bottlenecks is key. Based in the UK, I'm considering scan.co.uk for a tailored build, as other prebuilt options lack suitable M.2 choices. Some models I've seen are ASUS ProArt X870E-CREATOR WIFI, MPG X870E CARBON WIFI, and ROG CROSSHAIR X870E HERO. The priority is getting the most out of RAM and SSDs. Open to other recommendations.
Could there be benefits with any ASRock models, and might you choose from several options?
Generally it should work, though not all configurations will. For very high-density builds, using four 32GB or 64GB modules isn’t ideal—consumer systems don’t support quad channels. If you need a 128GB drive, combining two 64GB modules should suffice. The same applies to 96GB or 2x48GB setups. Problems arise when you attempt 4x32 to 64GB configurations. I own a system with a 9950x, plus four 64GB modules and two 3090s. I chose this setup because of their USB-C video output and dual GPU support via two PCIe 5.0 slots. Initially I could only reach 4800MHz with 256GB RAM, but after some updates it improved to 5600MHz. Beyond that point I haven’t pushed further. If dual GPUs aren’t necessary, any of your recommended motherboards will work well, so you can opt for the more affordable option.
This chipset and processor setup offers strong performance for memory-intensive tasks. The throughput will depend on the board you choose, but a 96GB DDR5 system with 6000MT/s is a solid option. Some CL28 boards provide higher speeds but may be more board-specific, making it harder to find a universally optimal balance. If RGB isn’t important, it won’t significantly affect the choice.
Consider watching this video and checking their forums for useful talks from people using dense configurations. Several users shared experiences with 6000MHz setups achieving around 70GB/s memory bandwidth using 256GB kits: https://forum.level1techs.com/t/ddr5-4-d...7?u=igormp It seems this setup should be feasible. I believe the performance gain won’t justify the effort or cost, as the improvement will likely be minimal. Keep in mind that modern Ryzen CPUs face significant I/O limitations.
One problem with the boards, aside from the ROG Strix X870E-E, is that adding two M.2 Gen 5 SSDs might reduce the primary PCIe slot to x8. This suggests you could only use one M.2 Gen 5 in slot 1, with slots 4 and 5 for Gen 4. Some advice indicates the Strix design avoids this issue, but the Asus product page confirms that M.2_2 and M.2_3 share lanes with the main PCIe x16 slot. It looks like all the boards you checked might have this limitation.
It seems the available options won't support running two M.2 Gen 5 drives while maintaining x16 GPU performance. Adding extra cards to a second PCIe slot might be necessary. Even slots that claim dual x16 support often limit performance to lower speeds if both are used. The Hero remains a viable choice, possibly using slower lanes.