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Please help me to get my B-die to run better! *SOLVED*
- Thread starter kevintuna
- Start date
Some motherboards simply won't run at Gear 1 at DDR4-3600 or above. In some cases, it requires higher voltage but going from ~1.1V to ~1.5V+ SA is way too much for only DDR4-3600 (I'm not saying it's not helping in some cases). I just noticed that every motherboard that I tested and couldn't run at DDR4-3600 Gear 1, started to work after BIOS update or never worked, regardless of voltages. I mean brands like Biostar, Colorful, or lower ASRock, ASUS, Gigabyte, etc. I had no problems with higher ASRock, ASUS, or MSI but I was testing only some specific models.
Anyway, on Intel, it doesn't matter so much to run RAM at a 1:1 ratio and I would go for DDR4-4133+ Gear 2 at more relaxed timings, as it gives better results in most cases and is easier to set than tight timings at Gear1.
If you have an above-average Samsung B then aim for DDR4-4266+. It should work at 1.4V SA +/-0.05V.
As long as 1.5V+ VDIMM seems high, many brands are offering their Samsung B kits with XMP up to 1.65V so I would stick with about 1.5-1.55V for OC.
You should see about 12GB/s higher bandwidth at ~4266 than at ~3600 and slightly worse latency but not so much as higher frequency also lowers latency.
MSI should adjust SA and other settings automatically. Once you find the max clock, start to play with sub-timings but the most important will be tRFC as at auto it will be twice as high as it can work.
Anyway, on Intel, it doesn't matter so much to run RAM at a 1:1 ratio and I would go for DDR4-4133+ Gear 2 at more relaxed timings, as it gives better results in most cases and is easier to set than tight timings at Gear1.
If you have an above-average Samsung B then aim for DDR4-4266+. It should work at 1.4V SA +/-0.05V.
As long as 1.5V+ VDIMM seems high, many brands are offering their Samsung B kits with XMP up to 1.65V so I would stick with about 1.5-1.55V for OC.
You should see about 12GB/s higher bandwidth at ~4266 than at ~3600 and slightly worse latency but not so much as higher frequency also lowers latency.
MSI should adjust SA and other settings automatically. Once you find the max clock, start to play with sub-timings but the most important will be tRFC as at auto it will be twice as high as it can work.
- Thread Starter
- #24
Sounds like I need to get out of gear 1. I'm going to try all this today. Thank you for taking the time to review my situation and respond.
Edit* on my motherboards specs, it says 4000mhz is max with 4 dimms. Does that mean that 4266mhz isn't even possible?
It means good luck trying 
... usually specs are lower than the maximum clock as it depends on too many variables to guarantee that. Try to play with various settings and maybe it will work higher. On AMD about 4400 is max with 4 memory modules, on Intel, the memory controller is stronger so should OC higher but some other things may cause stability issues. For example, 2/4 slots OC better while 1/3 worse.
Btw. don't focus on SA too much. More important is IO 2 for a higher memory clock. You can leave SA at ~1.30-1.35V but push IO 2 to 1.4-1.5V if you are stuck at some frequency. Once you stabilize everything, try to drop voltages as both SA and IO are heating up the CPU. Still safe but no reason to keep it too high when it's not required.
I'm not sure if you have signal quality reading in BIOS. I have it on Z590I Unify and it was on other Unify boards. It suggests which memory stick may cause instability. I can't check where it was right now but maybe you find it.
... usually specs are lower than the maximum clock as it depends on too many variables to guarantee that. Try to play with various settings and maybe it will work higher. On AMD about 4400 is max with 4 memory modules, on Intel, the memory controller is stronger so should OC higher but some other things may cause stability issues. For example, 2/4 slots OC better while 1/3 worse.Btw. don't focus on SA too much. More important is IO 2 for a higher memory clock. You can leave SA at ~1.30-1.35V but push IO 2 to 1.4-1.5V if you are stuck at some frequency. Once you stabilize everything, try to drop voltages as both SA and IO are heating up the CPU. Still safe but no reason to keep it too high when it's not required.
I'm not sure if you have signal quality reading in BIOS. I have it on Z590I Unify and it was on other Unify boards. It suggests which memory stick may cause instability. I can't check where it was right now but maybe you find it.
- Thread Starter
- #26
It means good luck trying
Btw. don't focus on SA too much. More important is IO 2 for a higher memory clock. You can leave SA at ~1.30-1.35V but push IO 2 to 1.4-1.5V if you are stuck at some frequency. Once you stabilize everything, try to drop voltages as both SA and IO are heating up the CPU. Still safe but no reason to keep it too high when it's not required.
I'm not sure if you have signal quality reading in BIOS. I have it on Z590I Unify and it was on other Unify boards. It suggests which memory stick may cause instability. I can't check where it was right now but maybe you find it.
I feel like I've spent 5 years living in my z590 tomahawk bios, pretty sure I don't have it. Messing around with all the voltages now and gear 2. Thanks for all the advice and knowledge.
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