07-31-2017 07:52 PM - edited 07-31-2017 07:55 PM
Hello! I have a Lenovo G50 80 80E501U3US with i55200u CPU @ 2.20 GHZ, Intel HD Graphics 5500, and a 4GB stick and a 2GB stick of 1600MHz RAM for a 6GB total. I'm interested in buying an 8GB stick of RAM to replace my 2GB stick. I looked at the list of compatable sticks and am thinking of purching this one (https://www.amazon.com/Memory-SO-DIMM-PC3L-12800S-1600MHz-HMT41GS6AFR8A-PB/dp/B00N46M5D2) here from Amazon.
My question is would it work to take my 2GB stick out and replace it with this one to have 12GB of RAM? Is that ok if they're different sizes as long as they're both 1600MHz? I'm also not sure the manufacturer of my current RAM or if that matters.
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07-31-2017 08:10 PM - edited 07-31-2017 08:15 PM
Your machine specs:
16GB max / PC3-12800 1600MHz DDR3L, non-parity,
dual-channel capable, two 204-pin SO-DIMM sockets
Download CPUz to view current memory:
Use the SPD tab and memory tab.
Your amazon Hynix looks like it matches spec.
You might just want to replace 2GB with 4GB to get dual channel. 4GB+ 4GB matching sticks.
OEM memory, page 80, part 12.
07-31-2017 08:27 PM - edited 07-31-2017 10:47 PM
Thank you very much for your quick reply! It looks like my 4GB Ram is the HMT451S6BFR8A-PB, and it looks like I can get this off of Amazon for about $25 which is pretty cheap.
I'm mostly looking to get a RAM upgrade for gaming as some games like Doom, GTAV, and a few others would work with at least 8GB.
I don't know much at all about memory but you mentioned dual channel. Is this only possible with matching sizes and ie 4GB and 4GB, and if so do they need to be from the same company as well?
Do you think one of the 8GB sticks would be better for gaming, or would it actually be better if I got the same 4GB stick of RAM?
Thank you very much for your help!
Compatible 8GB RAM
RAM, M471B1G73QH0-YK0 35nmQ 8GB DDR3L 1600 11202080
RAM, Hyn HMT41GS6AFR8A-PB DDR3L 1600 8GB 11201301
RAM, RMT3160ME68FAF-1600 8GB DDR3L 1600 11202450
RAM, Mic MT16KTF1G64HZ-1G6E1 DDR3L 1600 8GB 11201304
RAM, M471B1G73DB0-YK0 25nm 8GB DDR3L 1600 11202082
RAM, SK HMT41GS6BFR8A-PB/RD 8GB DDR3L 1600 11202707
Compatible 4GB RAM (same as one I have)
RAM, SK HMT451S6BFR8A-PB/RD 4GB DDR3L 1600
08-01-2017 07:40 AM - edited 08-01-2017 09:12 AM
SPD screen shows 800MHZ. Double this to get transfer rate.
1600MHZ which is pc3-12800. Transfer is 2 sides of memory at a time.
JEDEC writes the industry standard. Standard #4, 5, 6 and 7 showing.
Your memory supports standard 7, 800MHZ, which matches your memory controller.
CAS(clocks) 11-11-11 is timings from the memory stick. Very complicated to explain.
Dual channel support is matching SPECS and same size sticks. The vendor does not have to be the same.
Matching OEM sticks is the best option, as Lenovo has certified the part to work.
Matching Cruical sticks is nice because Cruicial has money back guarantee.
1 OEM stick with 1 cruical stick, matching specs should work, if matching specs.
The rump bite:
Buying NON oem memory with dual voltage support and different CAS 11-11-11 ticks.
Kingston value ram is bad for not working with Lenovo machines.
Avoid dual voltage. Your voltage is 1.35v.
I am not sure your machine is a gaming machine. Your should look up DOOM specs on their website.
Your 8GB Hynix is listed in the OEM parts List. Should work fine with existing 4GB stick.
I dont think dual channel support would kick in.
I would go with a $29 4GB Hynix stick to have two 4GB sticks and see how DOOM runs FPS.
RAM, SK HMT451S6BFR8A-PB/RD 4GB DDR3L 1600
Note: this stick on amazon is ticks 11-13-B4
This should not cause a problem. Go to the Hynix website and use their memory finder tool.
Check out www.cruical.com and use their memory finder tool also.
08-30-2017 07:01 AM
I added additional RAM so both slots are filled with 8 each. I still get 65-75% memory being used as soon at startup and while working. I looked at start up items and disabled ones i don't need. I use the OneKey Optimizer often and click the memory in use to try and clean up / lower the usage. Why is so much being used? Looking for more speed I guess. Any help is greatly apppreciated! I installed the additional RAM about 1.5 years ago . I don't have much stored on the computer as well . Just use it for internet and some word documents. Thanks!!!!