ZSUS X99 Mobo has a RAM limit of 2133 MB.
ZSUS X99 Mobo has a RAM limit of 2133 MB.
Hi everyone, I’m reaching out for advice. I purchased this board via a link from AliExpress and it came with an E5 2699 v3 kit. It functions adequately overall. The main issue is that the RAM doesn’t reach the desired speed—typically it stays at 1066 (2133…). I’ve adjusted many parameters, but there’s no direct XMP ‘on/off’ option; only manual settings are available. I’ve experimented with around 100 configurations, and while timing and frequency in BIOS are correct, the actual RAM speed remains stuck at 1066. I’ve also looked at some 2600 modules, but they don’t change from that setting either. There are so many BIOS tweaks to consider it’s quite complex. I’ve attached the memory configuration pages and what CPU-Z displays—this seems fairly standard. The latest image I’m using matches typical recommendations from CPU-Z, though the timings are accepted while frequency stays unchanged. I don’t have a clear understanding of the jumpers between the CPU and DIMM slots (Jms1, Jms2). Thanks for any help you can provide. — The Angry Miner (Edited June 28, 2025)
The memory controller on your CPU stops functioning beyond 2133, as detailed in Intel's technical specifications.
Your board's BIOS must accommodate XMP and the RAM should include an XMP profile. If not, you might need to adjust memory speed yourself. This also involves modifying timings, which can take a while. (I didn't expect a moderator to actually support this.) 2133 is a commercial standard. Most Haswell-E chips can handle DDR4 speeds above 3000 with scaling from G.Skill, Corsair, ADATA, and Crucial.
You're asking for clarification on your mining setup. It seems you've checked several parameters and still aren't sure if everything is aligned. The reports from CPUZ, Windows, and XMRIg all indicate similar values—2133 in CPUZ, frequency settings intact after reboot. This suggests the issue might be with the miner software itself or a compatibility problem. You're considering two options: either accept that it won't work and give up, or continue testing different settings until you find a working combination. The reason behind your doubt is that the settings you're seeing might not actually translate to successful mining.