Upgrading RAM in a lenovo ThinkPad T420

[Bret Busby]

On 20/7/23 03:42, Bret Busby wrote:
> On 20/7/23 03:34, Bret Busby wrote:
>> On 20/7/23 03:32, Bret Busby wrote:
>>> On 20/7/23 03:21, Ian Bruntlett wrote:
>>>> Hi,
>>>>
>>>> Output from dmidecode on my T420 tells me this about my current 
>>>> memory setup:
>>>>
>>>> Handle 0x0006, DMI type 17, 28 bytes
>>>> Memory Device
>>>> Array Handle: 0x0005
>>>> Error Information Handle: Not Provided
>>>> Total Width: 64 bits
>>>> Data Width: 64 bits
>>>> Size: 4096 MB
>>>> Form Factor: SODIMM
>>>> Set: None
>>>> Locator: ChannelA-DIMM0
>>>> Bank Locator: BANK 0
>>>> Type: DDR3
>>>> Type Detail: Synchronous
>>>> Speed: 1333 MT/s
>>>> Manufacturer: Hynix/Hyundai
>>>> Serial Number: 621925BC
>>>> Asset Tag: 9876543210
>>>> Part Number: HMT351S6BFR8C-H9
>>>> Rank: Unknown
>>>>
>>>> Handle 0x0007, DMI type 17, 28 bytes
>>>> Memory Device
>>>> Array Handle: 0x0005
>>>> Error Information Handle: Not Provided
>>>> Total Width: 64 bits
>>>> Data Width: 64 bits
>>>> Size: 4096 MB
>>>> Form Factor: SODIMM
>>>> Set: None
>>>> Locator: ChannelB-DIMM0
>>>> Bank Locator: BANK 2
>>>> Type: DDR3
>>>> Type Detail: Synchronous
>>>> Speed: 1333 MT/s
>>>> Manufacturer: Hynix/Hyundai
>>>> Serial Number: 025B744E
>>>> Asset Tag: 9876543210
>>>> Part Number: HMT351S6BFR8C-H9
>>>> Rank: Unknown
>>>>
>>>> I'm interested in upgrading to 16GiB RAM.
>>>>
>>>> There is an 8GB x 2 memory kit on Amazon UK.
>>>> https://www.amazon.co.uk/gp/product/B00JCRZ6XS/ref=pe_19532261_824759761_em_2p_3_lm?th=1 <https://www.amazon.co.uk/gp/product/B00JCRZ6XS/ref=pe_19532261_824759761_em_2p_3_lm?th=1>
>>>>
>>>> I'm wondering... is the Amazon kit compatible with a ThinkPad T420?
>>>>
>>>> This isn't the cheapest of all options but stuff by Crucial has 
>>>> proven to be useful so far...
>>>>
>>>> TIA,
>>>>
>>>>
>>>> Ian
>>>>
>>>
>>> Have you checked the computer specs (not the current hardware 
>>> configuration), to find how much RAM, and, what RAM specifications, 
>>> it can take? I have a couple of laptops that I was given, with i7 
>>> CPU's, and, they will not take 1GB
>>
>> Should have been 16GB. Typo's increase with cat on lap (worse with cat 
>> on laptop :) ).
>>
>>   RAM. I think 8 or 12, is their maximum,
>>> making them paperweights.
>>>
>>>
>>> ..
>>> Bret Busby
>>> Armadale
>>> West Australia
>>> (UTC+0800)
>>> ..............
>>>
>>>
>>
> 
> At
> https://notebooks.com/2011/02/21/lenovo-thinkpad-t420-details-specs-and-photos/
> is
> 
> "The ThinkPad T420 can be configured with the new Second Generation 
> Intel Core i3, Core i5 and Core i7 processors, up to 8GB DDR3 RAM"
> 
> Therein appears to lie your answer.
> 

Similarly, at
https://www.laptopmag.com/reviews/laptops/lenovo-thinkpad-t420
is

"
RAM
	4GB
RAM Upgradable to
	8GB
"

..
Bret Busby
Armadale
West Australia
(UTC+0800)
..............