4xDDR5 dimming units featuring 9950x3D technology encounter EXPO failure during startup.
4xDDR5 dimming units featuring 9950x3D technology encounter EXPO failure during startup.
I just assembled a 9950x3d on a gigabyte x870 gaming wifi6 board and needed 128GB of RAM. I chose Corsair Vengeance 6000Mhz CL30 with 4x32GB (CMH64GX5M2B6000Z30, works with XMP and EXPO). The system started up and I managed to install Windows. After adjusting the BIOS settings to enable EXPO1 for 6000Mhz support, the machine didn’t boot at all—only a red LED lit up for RAM. After a few minutes it restarted and asked to reset the BIOS to defaults. I ran several tests: using all four slots with EXPO1 still caused the system to fail. I also tried 4x32, 2x32, and 2x16 slots with the same configuration. All tests passed at full speed except when all four slots were used together. The issue seems to appear only with the four-slot setup. Is this a problem with the CPU, the motherboard, or both? I’m open to swapping the board or RAM but unsure what to pick.
Running at 4x 6000MT/s demands significant manual adjustments. Typically, you hit about 5600MT/s with four sticks. For best performance, stick to two sticks unless you need the extra memory, which will then hurt speed. You can't have both at the same time on Ryzen.
Memory controller limitations make it tough to achieve 4 sticks for RAM at 6000Mhz on Ryzen 7000 and 9000 processors. That's why higher capacity kits like 2x24GB or 2x48GB are becoming more common. I recommend choosing a 2x48GB kit instead of 4x32GB. You'll lose a bit of RAM, but you'll get better performance.
Yeah is the short answer AM5 does not do high speed 4 sticks you either a) settle for slower speeds or b) go for less capacity/same capacity in 2 sticks rather than 4 You have a snowballs chance in hell of doing high speed 4 sticks on am5 regardless of your CPU
A few people handle it, but I rarely exceed 4800MT/s consistently. I purchased four units since the online advice suggested it would be tough to maintain performance.
You're planning a fresh build with a lot of RAM needs—rendering, motion graphics, and game development. A 96GB (two 48GB modules) setup should perform well and run smoothly. If you're okay with a slight performance dip, it's definitely feasible. Going for 192GB is tempting but risky; stick with what feels stable and reliable. Prioritize speed over extra capacity unless you're certain your software will handle it. Good luck!
You're probably limited to 2x48GB of RAM unless you opt for the higher-end 2x64GB option. For a larger working memory and are willing to take shortcuts, Intel Optane works surprisingly well as a page file. https://www.reddit.com/r/photogrammetry/...rtual_ram/
You handle high capacity easily, yet speed with that capacity is another story. I’m leaning toward swapping the X670E for the X870E to check for improved compatibility.
Hey everyone, sorry about the situation. In my area (Canada) 2x64GB isn't really feasible no matter the cost. I've got two 128GB bundles that are affordable, but they look either brand new or hard to find... Most of my other parts are already set up. I'll wait a few more days and hope for a 2x64 kit soon. I think I'll probably pick a 2x48GB model and if I need extra space, buy another one at lower speeds. There are definitely strong opinions on this, but my use case is different—most people don't run 4 sticks, and even then they prefer to keep things slow. My goal is top stability and performance, so even at default speeds it'll be a noticeable improvement. This upgrade will make a big difference, so I'm ready for any changes. Thanks!