Upgrading RAM on Dell Inspiron 15R and Dell Inspiron 7548 laptops

Hello everyone,

Both the laptops Dell Inspiron 15R and Dell Inspiron 7548 came with 6 GB of RAM. I'd like to upgrade it to at least 12 GB by replacing the 2 GB dimms in both laptops with 8 GB dimms.

Was wondering whether it is safe and okay to combine different memory modules from different manufacturers.

I'm also leaving the US next week and so would prefer getting RAM that's more reliable and wouldn't mess up the laptops.

Could you guys please recommend which ones you'd get? I've bought Samsung and Crucial in the past and didn't have any issues.

Any comments or be greatly appreciated. Many thanks in advance.

PS: here's the configurations of both laptops:

Amazon.com : Dell Inspiron i15RMT-5124sLV 15.6-Inch Touchscreen Laptop (1.6 GHz Intel Core i5-4200U Processor, 6GB DDR3L, 500GB HDD, Windows 8) Moon SIlver : Computers & Accessories

Dell Inspiron 15.6" TouchScreen Laptop Intel Core i5 6GB Memory 1TB Hard Drive Silver I7548-2129SLV - Best Buy
arise5Asked:
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dbruntonCommented:
>>  Was wondering whether it is safe and okay to combine different memory modules from different manufacturers.

That's doable.  Best practice though is same manufacturer and same specifications for all memory.  

If you do mix try to ensure that the new memory has the same specs (usually frequency) as the old memory.  If it doesn't then the combined memory will drop back to the specs of the slowest memory.

Now mixing from different manufacturers shouldn't cause problems but you may get the odd occasion when it does happen.

Samsung and Crucial are both reliable.  You could probably look at Corsair and Kingston as well.
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Tony GiangrecoCommented:
Mixing different manufacturers can cause Windows to lock or not boot in certain situations.  best practice is to use identical ram chips whenever possible - Brand, model# and size. In some cases you can mix the size if the speed and brand are the same like a 4 Gig and 8Gig chip. the laptop specs must allow for that memory configuration or you again will have problems.

I've learned this the hard way being in IT for a long time.
Hope this helps!
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arise5Author Commented:
Many thanks for your responses, dbrunton and TG-TIS.

Here's the existing RAM information from CPU–Z.

 Inspiron 15R:

Dell Inspiron 15R Slot 1
Dell Inspiron 15R Slot 2
Inspiron 7548:

Dell Inspiron 7548 Slot 1
Dell Inspiron 7548 Slot 2
Based on the above information, could you please recommend the sticks that you would get, preferably from Amazon?

Dell's upgrade page for Inspiron 15R recommends this one:

http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=bsd&cs=04&sku=A7022339&mfgpid=234308 which is 1600 MHz.

So can I get this one for that laptop: http://www.amazon.com/Kingston-Technology-1600MHz-PC3-12800-KVR16LS11

This would match the manufacturer of the existing stick (Kingston).

Dell's upgrade page recommended the same stick for Dell Inspiron 7548 as well.

Since I wasn't able to locate Hyundai's 8GB stick, is it okay if I get Kingston or Crucial's stick:

http://www.amazon.com/Kingston-Technology-1600MHz-PC3-12800-KVR16LS11

http://www.amazon.com/Crucial-PC3-12800-204-Pin-Notebook-CT102464BF160B/dp/B006YG8X9Y/
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Tony GiangrecoCommented:
I would stay with Kingston. I've always had good luck with them.
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dbruntonCommented:
The Kingston link doesn't work for me.

In theory the Crucial memory chip should work.  In theory.

Note that if you go to Crucial http://www.crucial.com/usa/en/memory-info and feed the details of your Inspiron 15R into Crucial's memory finder you'll get a slightly different RAM chip returned as being suitable for your system.  I suspect that might be due to that the Amazon chip is a dual voltage RAM chip whereas the Crucial database might be returning only 1.35 V chips.

It won't return anything for the second system.
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arise5Author Commented:
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dbruntonCommented:
Yep, that should work OK.
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arise5Author Commented:
Thanks again guys.

Just to confirm both of you recommend to go with Kingston 8 GB stick for both laptops, right?

Greatly appreciate the help.

Similar thread for my desktop for your kind perusal: http://www.experts-exchange.com/questions/28695196/Upgrading-RAM-on-Dell-XPS-8700-desktop.html
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nobusCommented:
if you have different sticks - first test them separately, to be sure they are ok
then combine, and check if the mobo accepts them together -  there's no rule saying they will work together or not

and if possible - use the same sticks in pairs !
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arise5Author Commented:
Thanks nobus. So you're recommending to

1. Remove the existing memory sticks

2. Install the new 8 GB Kingston stick and run memory test in BIOS. If it is successful, proceed with step 3.

3. And then install the existing 4 GB stick back to the laptop. And then run the memory test again in BIOS to test all 12 GB.

Does the sequence sound right to you?
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dbruntonCommented:
The Kingston memory should work.   We can't guarantee because we haven't tested it in your configuration.

But in the comments thread there are happy Dell users who have purchased and used that Kingston RAM.

As for testing the memory I'd insert the chip with whatever and boot up.  If the system runs OK then it should be fine (no 100% guarantee though).  If you wish to be fussy then test it as nobus suggests.
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arise5Author Commented:
Thanks for your response, dbrunton.

Alright then. Ordered two quantities of Kingston for both laptops..

Ordered this Kingston for the desktop as well.

Like you guys said, it definitely looks like one can't go wrong with Kingston.
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nobusCommented:
well, yes that's what i suggested - though the ram test is not really necessary - only if you have problems - just check in bios if the ram is seen, then boot up

you can do it with separate ram, or together (if it works fine, all is well; but if not, uninstall one kind of stick)
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