10-07-2014 06:32 AM
I have a ThinkPad E531 and would like to upgrade it to 16 GB Memory RAM.
The specs on Lenovo.com say "The use of 650MHz SO DIMM memory is recommended for this system." BUT - When I search to buy memory, even on Lenovo.com, I've mostly only seen 1600 MHz memory. Certainly, no 650 MHz memory.
(1) Is 650 MHz memory even available? (2) Is 1600 MHz considering "overclocking" (which I don't want to do, because it presumably can result in more errors and shorter hardware life).
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10-07-2014 07:02 AM
10-07-2014 10:01 AM
Thanks, that link (http://support.lenovo.com/en/documents/pd027146) was the specs document I was referencing when it said 650 MHz.
You mention my device uses DDR3 low voltage, but what are the implications of that in terms of either searching for 650 MHz memory or using 1600 MHz memory?
10-08-2014 04:35 AM - edited 10-08-2014 04:38 AM
Open up your Edge and look at the existing memory stick(s). What do you see?
Or install CPU-Z and run that. It will tell you whats in there.
"650" is a misnomer. It should be "667". Double data rate (DDR) memory rate runs at 1333, more accurately. 1333 is an industry standard. But what is printed there doesn't agree with the PC3 12800 spec.
There is no 650 or even 667 in DDR3. Lowest DDR3 you can get today is 1066.
Here's what you want, courtesy Crucial:
You can put 1600 RAM in there without concern. It's not overclocking. The memory will only run as fast as the processor can call for data.
Edit: And low voltage is the new spec for latest CPUs and systems as a part of energy savings.
Edit2: You don't have to buy Crucial, but they have nice finder for purposes such as this. I like Crucial and G. Skill. Check out Newegg.
10-08-2014 06:14 AM - edited 10-08-2014 06:15 AM
Thanks! CPU-Z says I'm running at a DRAM frequency of 798.1 MHz, so my 4GB memory stick presumably must be running at 1600 MHz. DDR3 Single 4 GB FSB : DRAM 1:6.
10-08-2014 07:02 AM - edited 10-08-2014 07:27 AM
There you go. 1600 it is.
I'm writing on a T440p with this G. Skill Class 9 part. Very nice.
Get yourself a matched pair of branded 8 GB sticks and get on down the road. G. Skill, Crucial, Micron, Mushkin. Avoid Kingston Value. And don't buy RAM on eBay.