Thursday, September 4, 2008

More than 2Gb of RAM on the SI1520

Fellow blog reader Helder (thanks!) reports his experience in expanding his SI1520's memory over the limit of 2Gbs, which is what is stated in the official specifications of this laptop:

I have put 2GB + 1GB of DDR2-667 memory, and it worked just fine. I've tried with 2 x 2 GB, but the laptop couldn't recognize past the 3 GB.
Besides, I suspect that there are implications regarding the video memory allocation, because when I booted into either XP or Ubuntu, the screen went all blank, altough the computer was still responsive. It might be the case of just some tweaking.

I used Kingston memory, with these part numbers:

- 2GB - KVR667D2S5/2G
- 1GB - KVR667D2S5/1G

If anyone managed to make the SI1520 work with two 2Gbs memory modules, please let us know, even if the laptop only recognizes a total of 3Gbs!
In fact, the use of two memory modules of the same type would make a "dual channel" setup, allowing the laptop to access memory much faster, since it would see them as a single 128bit wide memory bank, instead of two 64bit wide banks.

Update 4/18/2009: user neustaedter points out that using Windows Vista 64, the system recognizes all 4Gb. This does not work with BIOS v1.20, and v1.10 needs to be installed.

28 comments:

ThomasV said...

32 bit XP can only recognize up to 3GB of memory

Arbani said...

if there is anyone that have succeed this, pls let us know and if possible write some informations

thanx!

semiot said...

you wrote:


Besides, I suspect that there are implications regarding the video memory allocation, because when I booted into either XP or Ubuntu, the screen went all blank


was it possible to use the 3GB of RAM in the si1520? i didn't get it.

Sciamano said...

3 Gb YES
4 Gb NO

larconelli said...

i confirm that you can use 3gb on this notebook.

Neustaedter said...

I am using 2x2GB Kingston right now under Vista 64. Does not work with the 1.20 Bios - mine is running with 1.10...

Sciamano said...

Thanks Neustaedter.
Does your system recognize all the 4Gb, or just 3?

Neustaedter said...

all 4G

Sciamano said...

Thanks!

Geoff said...

Please can someone tell me where the second memory slot is on the si 1520.

Many Thanks

Mozi said...

I'm running Windows 7 x64 with BIOS 1.10, but Windows claims that I've "Installed memory 4,00 GB (2,99 GB usable)". However, BIOS shows me correctly 2x 2048mb with dual channel. Oh, and I'm using Kingston KVR667D2S5K2/4gb (dual-kit). Any ideas where's the prob?

Ferenc said...

Some guru mentioned somewhere that this chipset (i945) can anyway address only 3 GBs, even if full 4 GBs are installed. He mentioned some limitation of 32 bit addressing. Probably that's why the BIOS sees the full size, while the OS can utilize only 3 GBs.

Nelli said...

Yes, I've taked yesterday with Fujitsu support and they told the same:( I've installed W7 64 bit and 4 gb memory. It sees all 4 but use only 3 gb:( If anyone make it work, plese let us know how.

FelipeBuzz said...

Please!!! I need help. My Fujitsu Amilo Si 1520 don´t recognize 3GB. I have 2GB,when I Put 1GB, doesn´t work!!!! Sorry for my english.

Brandon Hudson said...
This comment has been removed by a blog administrator.
Yunique said...

Hi everyone

My name is Yunique and I am from South Africa. Although I am currently struggling to install Windows 7 (it used to work until my system did not work anymore) I got it right to install a 4 gig but it shows 3.98 gig. Just thought everyone would like to know.

Sciamano said...

Thanks for the information. What version of the BIOS do you have installed on your SI1520, Yunique?

Yunique said...

Hi, Sciamano. I have to take a look and will reply here. I am currently at work. I know that I updated it to the latest version. I will let everyone know by tomorrow.

Sciamano said...

Thanks, that would be useful because so far only BIOS v1.10 was able to recognize 4GB, although even 64-bit OSes would still use only 3 of them.

Yunique said...

Hi, all. Sorry for the late reply. I have been on the road. Yes, I have the 1.10 version BIOS as well. I finally got Windows 7 installed again. It is Ultimate. My hard drive that was there is dead so I replaced it. I installed the 64 bit since I am running this laptop in my home based recording studio and I need it for my plugins and DAW. I know I know it is old but so far it is doing a great job for what I have to do. Now that I have the 64 bit installed it only shows the 3 Gig, although I have 4 Gig RAM installed. Quite interesting since the boot screen shows 4 Gig. That is weird. Any suggestions?

Yunique said...

Oh and does anyone know where I can get graphics drivers for the laptop? Would be highly appreciated. Apparently one of my plugins says that I should update it.

Sciamano said...

So far only one user has stated that his system could use all 4 GBs.
I have never seen this with my own eyes, though and no one else ever confirmed.
My opinion is that it is not possible to make the system use more than 3 Gigs, for some kind of hardware limitation.

Regarding the graphic drivers, best place to check is Intel's website, since they manufactured the chipset.

Yunique said...

Hi Sciamano. Thank you for the heads up for the graphics driver. Let's hope we can solve this issue with the RAM but I also think then that you have to upgrade your hardware.

Sciamano said...

Thank you Younique for sharing your experience.
And if you find a solution let us know! :)

Yunique said...

Hi guys. I need some advice. I need to know if the laptop supports Open GL 2.1 and higher e.g. Open GL 3? I am not sure and do not have it in front of me to check. I, however, searched everywhere but cannot find any proper information about it. Thank you in advance! :)

Sciamano said...

No. Intel GMA950 only supports OpenGL 1.4

https://en.m.wikipedia.org/wiki/Intel_GMA#GMA_950

Yunique said...

Damn. Ok. Thank you. Do you think it will be possible to upgrade the graphics card?

Sciamano said...

It's not possible.