Adding RAM to G75VW BBK5

[Loren]

I would like to add more RAM to my Best Buy G75. I wanted to add 4 new RAM modules, but have read on the forum that getting at the stock RAM will void the warranty as it is located under the keyboard. If I were to leave the stock RAM alone and add two 8 GB RAM modules with the same specs (1600 DDR3...) would it work? i.e. does it mess things up to have two 4 GB modules under the keyboard and two 8 GB modules in the easy to get to locations?

I have read that the reason 16 GB is the max is due to the version of Windows--that you have to run Windows 7 ultimate for the machine to use more than 16 GB. If that is true what amount of RAM can Windows 7 ultimate utilize? 24GB? 32GB??

If I were to replace the stock RAM and have four 8 GB modules could I successfully use a higher MHz than 1600 (1866)?

Also, if I made a "RAM disc" would the computer be able to access the info significantly faster than it would from a solid state hard drive? I am replacing the primary HD with a 256 GB Samsung 830 regardless of what I do with the RAM. I "fly" quite a bit with Microsoft FSX and X-plane 10. If I loaded the flight sim on the RAM disc along with a lot of the scenery data I use a lot it seems to me that this would be the best way to improve performance (frame rate, etc.) or am I wasting $$ expecting a RAM disc to be much faster than an SSD?

I look forward to your comments.

[rewben]

wo thanks @Singinwolf725, i thought of grabbing that this weekend, if i found it.

i think the matched for most of us is this from Samsung, http://www.newegg.com/Product/Product.aspx?Item=N82E16820147090

it's not sold here in Malaysia. great 😕

[Singinwolf725]

Kingston Sure does want to keep it's customers unlike NewEgg. The memory was 23 days past their 30 day return/refund period. They basically told me in a chat they could do nothing about the issue because of the return deadline. I have done a lot of business with NewEgg and will rethink future purchases. I have to purchase a tablet for my wife in the near future and will likely not purchase it from Best Buy instead of NewEgg! Too bad for NewEgg! When a company takes cares of it's customers the customers that care of the company. It's the customers that pay the salaries and keep a company in business! According to tech support the cas 9 is too aggressive for the system and it take a cas 11 according to their compatibility list. I added an additional 8GB for a total of 16GB.

[TSC-Ops]

even if you put in 2 8gb 1600 it defaults to 1333. at least mine does when mem tested

[c_man]

G75 should have Elpida modules - 11 - 11 - 11- 28 1600Mhz. (if you see link, new G75 might not use Elpida anymore)

If you put let's say 9 - 9 - 9 - 26 1600Mhz next to Elpida, the system should set the higher value - 11 - 11 - 11 - 28, NOT the 9 - 9 - 9 - 26.

So it really does not matter if new modules have a more agressive setting. But RAM modules can have problems working together.

If you put 1333Mhz with 1600Mhz, the system will set the lower value - 1333Mhz.

Also, if you go above 16 Gb RAM, the system should reduce clocks from 1600Mhz to 1333Mhz.

[Zygomorphic]

Generally true, @c_man, the memory controllers in the laptop chips (at least the non-extreme ones) are not capable of taking the load of >16 GB RAM at 1600 MHz, this was also true with the (G74/G53)SX as well.

[rewben]

i think g55 and g75 uses improved controllers to support up to 1600MHz; this is from my g55:

[c_man]

This is good news for those that want to upgrade.

Put down the exact modules you have mixed.

[rewben]

it's Kingston ValueRam. thanks to @Singinwolf725, http://www.kingston.com/dataSheets/KVR16S11_8.pdf

[TSC-Ops]

[john_from_ohio]

This is getting somewhat long ... the short story is ... if you are upgrading RAM ... best to find out exactly what you are running now and if you are just adding some additional memory ... double check that the RAM you are adding has a mode that exactly matches your current RAM.

Too many people who should know better in this forum are blindly recommending buy something better/faster speed it will be compatible.

In many cases this is not true and sometimes the advice being given here is not helping people.

Just my opinion.