What is the maximum safe voltage for DRAM in Ryzem?
What is the maximum safe voltage for DRAM in Ryzem?
I'm a bit unsure about the voltage limits. My RAM runs smoothly at 3333MHz with 1.4V, and it's been stable for a while. I experimented with 1.43V and 3466MHz, but it works fine yet doesn't pass benchmarks. The specs are listed in the top spoiler section.
it would be better to use memtest so you can observe the number of errors and see if improvements are happening or things are getting worse.
regarding your timing metrics...
tWR should be around 10 or 12
tRTP should range from half of tWR up to 12 (if it's 12, minimum is 6)
your tWR is 26 atm which is slow for your refresh rate
another issue is tRFC 443 while tRC is 80
tRFC should be a multiple of your tRC (from 6 to 8)
so if we assume tRFC is 443, then tRC can fall between 55 and 74
tCWL should match tCL
Well, even when OC'ed ram usually stays under 1.35, I think you'll reduce the lifespan of those DIMMS at 1.4 or above.
Certainly, as shown in a few recent articles about Tom's setup, the gap between 3200mhz and 3466 or higher is only a couple of percent. In some situations you might not notice any real improvement, and any gains would mostly come from synthetic benchmarks and a slight boost in FPS during games. I'd stick to lower speeds with minimal voltage and tight timings.
It relies heavily on the specific DRAM chips present in your modules. Certain types can handle higher voltages and even require them for overclocking, such as Samsung b-die, which can reach up to 1.5V. Conversely, other DRAM variants may become less stable under these conditions.
In most cases, stick to a maximum of 1.4 or 1.45 for b-die chips. This appears to be a reliable guideline to follow.
HWUnboxed offers useful information on identifying your chips and setting optimal parameters using accessible tools:
View: https://www.youtube.com/watch?v=KOqhyVNPhaM&t=12s
My memory units are Samsung E-die. They're rated at 3200mhz C16 with a 1.35v supply. I'm more concerned about protecting my CPU's IMC than the lifespan of my RAM.
They operate at 3200mhz at 1.35v fine with xmp on.
Manually overclocking brings me to 3333mhz with 1.4v stable.
I really aim for a solid 3400mhz, but 1.4v isn’t enough.
Many users are testing Ryzen 1000 chips with b-die at voltages above 1.45 volts. I wouldn't be too concerned about staying within the 1.35 to 1.40 volt range if it functions for you. Make sure VSoC remains stable, as that could increase the risk of damaging the IMC. For more details on memory voltage scaling, check this guide: https://github.com/integralfx/MemTestHel...aster/DDR4 OC Guide.md#voltage-scaling