Dell 17R 5720 Ram Compatibility Help

[jesse47174]

I just recently picked up a Dell Inspiron 17R 5720 w/ an 3rd gen i5 3210M and a HM77, A19 Bios....I was wondering if anyone can help find the max supported ram and Cas Latency it could take? Specs say I cant go past 8GB but I read of people going up to 16GB, they also say to use DDR3L-1600 but when I go on crucial or new egg they say I can use DDR3L-1866?

It currently has just an 8GB DDR3L-1600, dude before me was running the max 8GB on one slot and a 4GB on the other for some reason so I want to pick up a pair to utilize the dual channel.

Any help would be great

Thanks

 

[Ironsounds]

Hello... The memory controller is on the CPU... intel states DDR3/L/-RS 1333/1600 non ecc for that CPU... I would suggest DDR3L @1600 12800 so-dimm.
http://ark.intel.com/products/67355/Intel-Core-i5-3210M-Processor-3M-Cache-up-to-3_10-GHz-rPGA
Typically the HM77 will have a max of 8gb's of RAM per MB slot.

 

[jesse47174]

Yea I was looking at that the other day actually. Ive tried the memory finders on crucial and newegg but everything says something different for some reason. I was prob going to stick with the 8GB (2X4GB) DDR3L-1600 CL11 to play it safe but if I could go higher GB or lower CL I would

When the dude before me had it though, had the max 8GB on one slot and a 4GB on the other and it recognized the 12GB total so wasnt sure if could go higher

 

[jesse47174]

https://www.cnet.com/products/dell-xps-15-l521x-15-6-core-i5-3210m-6-gb-ram-32-gb-ssd-plus-750-gb-hdd-english-12833603406864/specs/ <--- I found this laptop with the same setup as mine and it can handle 16GB?

 

[Ironsounds]

Hello... Typically it's 8gb's per physical slot with these DDR3 NON-ECC memory controllers and 77 series chipsets... thus 32gb's total with 4 slots... only 16Gb's total with 2 slots... How many RAM slots do you have?

I would first try and match the other 8gb stick for a low cost option... B / and have 16Gb's in it? post a image of it if you need help matching it... The amount of Ram is more important than the CAS for over all performance, with your OS, CPU and memory controller... Don't get tempted into spending more than you really need here, on special RAM? (spend/save that $$ for a larger SSD instead) B /

 

[jesse47174]

Thanks for the reply by the way.....I just have two slots. I might pick up another 8GB stick to match sense there is one already in the one slot to see if it would work. I just dont want to waste money for it not to work. Going past the max shouldnt create any issues tho right? either it will boot or it wont?

 

[Ironsounds]

Hello... DDR3 16gb non-ecc so-dimms are not available?... so I'm confused as to how you could go over max? do you mean CAS or Speed? You can always run higher Speed memory at say 1333/1600 default settings... But changing CAS values take enabled features and advanced BIO's tweeking.

Basically YES... at boot the MB with try and communicate to the memory before a display... Boot or NO boot is the result... you won't break anything B )

There are ways to make memory setting changes, BUT typically OEM's don't have BIO's features enabled to do this... removing the MB battery, and Clearing/resetting the CMOS, is your only option... This forces the BIO's to re-read, and then try and Set NEW memory communications, with the different sticks B /