Crucial Single 16gb ddr3 204 Pin Memory Module

Crucial has a 16gb single memory module DDR3 12800 CT204864BF160B 204 pin. Has anyone tried this in a Elitebook. I have both a 8440P and 8570P elitebook. Both cpu's support 32gb of memory. I believe the QM77 also supports up to 32gb of memory. This memory is coming down in price where you could use a single 16gb.Crucial doesn't technically support it for the eltiebook but do show it in the available memory when you enter these models. Many Dell computers seem to support it. Curious, I now use 2 8gb in one machine and would like to update the other as it was recently refurbished but has no memory.

 

That's the million dollar question. By many DELLs, which ones? Are there old ones? Usually only newer machines (5th gen core i and up) are guaranteed to support it. With older machines it's hit or miss, and most likely it's a miss. I have my faith that Mobile Workstations have better written BIOS in this regard (memory addressing), but I don't have so much money to burn at the moment. On paper mine supports up to 16GB (4x4GB), but I'm running 24GB (2x8GB + 2x4GB) and I know for sure that it can run 32GB (4x8GB), as quite a few members have this config. That's the reason to hold off from getting another 2x8GB pair, I would rather get 2x16GB and then another one, if they work.

 

I believe that only 5th and 6th generation Intel chips support 16GB sticks.

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Yeah problem with my elitebook is only 2 memory slots.

 

FWIW I did try simulating bigger DIMM's on a Z77 with IVB sometime ago. While the BIOS limitations can be fixed up and CPU registers appear to be correctly set the results were disappointing.

BIOS POST with fake 16GB DIMM's and a couple of 8GB DIMM's too. 48GB total.


We can even post with fake 32GB DIMM's, 2x 32GB for 64GB RAM


Now with faking 2x 4GB DIMM's as 2x 8GB DIMM's we can post and fixup the E820 or memmap table to reserve the fake RAM so Windows is happy to boot with 16GB installed, 8GB usable.


However when trying to fake 16GB DIMM's we end up with memory addresses wrapping around 1GB. This means less than 1GB of memory being available when 2x 16GB DIMM's used.

Windows will only boot with less than 1GB of RAM usable otherwise RAM addressing corruption will occur.


IVB also is limited to 36-bits of physical addressing while that's increased with HSW. I have not tested HSW but we do know IVB-E and BDW can run with 16GB DIMM's. Perhaps a column addressing bug, idk but don't have much hope for you with the 8570p, of course the final proof is always with someone trying it.

 

Yeah thanks for that information. I like and have both both 8440P and 8570P and have upgraded the bios in both machines to the latest revision, not that means much.

I don't like to mix ram types, sizes, specifications, or manufacturers on any of my PC's. That being said, I have mixed all types of sizes in these computers as an experiment. In almost all cases these two computer yielded the correct amount of ram and tested correctly whether 2,4,6, or 8gb was mixed. However that was in sizes mixed up to a total of 16GB or less ram. So, really I usually stick to a matched pair.

Ram is so cheap now that even while it isn't necessary to have more it certainly doesn't hurt your computer to have more. Especially memory hogs like CAD Programs. The only problem with larger chips is that if one goes bad you lose that entire block of memory which is significant if it were for example a 4gb chip over a 8 or 16gb chip.

There are different chipsets in each computer, I think QM57 and QM77, not sure. I am getting ready to build another regular desktop computer which would accept the chip we are talking about. When they come down more in price, I will try that nice chunk of 16gb real estate in one memory chip. In the meantime maybe somewhere, some day, somebody, read this thread who has has tried it in my scenairo.

 

@Dufus wow just wow. Would be great if you try with HSW.

 

it's possible to block entire memory chip in ram stick if it's faulty flashing different ram profile but you should have knowledge using Thaiphoon Burner and licence of course.