Trying to help a customer of mine with this odd issue.
He has a X9DRL--3F with it fully populated with8GB DDR3-1600 1.35V Samsung Ram M393B1G70QH0-YK0 which is Supermicro approved. EVery once in a while, the server will hang at 2F. You are forced to pull and reseat ram. Doing so, the system will boot up.
We also tried the other Approved Samsung RAM M393B1G73BH0-YK0. The system also hangs at 2F at times with this RAM too.
The RAM works fine in the system once booted. The RAM passes every single memory test we throw at it. Including dropping the voltage down to 1.15V. The ram works flawlessly at 1600mhz.
We did notice that supermicro has now changed there manual (different from the one we got in the box) to say that this board does not support 1.35V at 1600mhz.
Yet, thats exactly what our motherboard is running. The SPD on the module includes DUAL voltage 1.35V or 1.5V and supports 1600/1333/1066/800. And this motherboard is calling for 1600mhz @ 1.35V which I guess the manual now says it does not support. Which I dont understsand. Why remove 1.35V @ 1600mhz from the manual? Thats a JEDEC standard combo? And if its not supported now, why does the BIOS pick that combo from the memory SPD? Why are those modules still listed?
And with the world going GREEN, who even purchases 1.5V ram now days? Why? Its all 1.35V DRAM anyhow.
Do you guys think is causing this?
He has a X9DRL--3F with it fully populated with8GB DDR3-1600 1.35V Samsung Ram M393B1G70QH0-YK0 which is Supermicro approved. EVery once in a while, the server will hang at 2F. You are forced to pull and reseat ram. Doing so, the system will boot up.
We also tried the other Approved Samsung RAM M393B1G73BH0-YK0. The system also hangs at 2F at times with this RAM too.
The RAM works fine in the system once booted. The RAM passes every single memory test we throw at it. Including dropping the voltage down to 1.15V. The ram works flawlessly at 1600mhz.
We did notice that supermicro has now changed there manual (different from the one we got in the box) to say that this board does not support 1.35V at 1600mhz.
Yet, thats exactly what our motherboard is running. The SPD on the module includes DUAL voltage 1.35V or 1.5V and supports 1600/1333/1066/800. And this motherboard is calling for 1600mhz @ 1.35V which I guess the manual now says it does not support. Which I dont understsand. Why remove 1.35V @ 1600mhz from the manual? Thats a JEDEC standard combo? And if its not supported now, why does the BIOS pick that combo from the memory SPD? Why are those modules still listed?
And with the world going GREEN, who even purchases 1.5V ram now days? Why? Its all 1.35V DRAM anyhow.
Do you guys think is causing this?
