[elroy944]

i opened the device and saw it's an ddr2 slot with the chip, anyone tried to use an ddr2 memory chip? i haven't got any at home so i can't try. the 128mb ram wich is currently in the device is way to less to run it smooth.here are some pictures

i think we can make this device a bit faster when switching to another chip

 

[imayoda]

WATCH OUT!!!! That thing formerly is a known connector but it has different mapping on power and data ports, almost for sure.Think about it: on the original board we have installed on, there is the CPU and the ram module (the elpida small chip)Don't try to insert a simple ram module in there, for sure you'll melt down your motherboard and ddr2 module !!!

 

[elroy944]

[quote author=imayoda link=topic=738.msg5887#msg5887 date=1275904385]WATCH OUT!!!! That thing formerly is a known connector but it has different mapping on power and data ports, almost for sure.Think about it: on the original board we have installed on, there is the CPU and the ram module (the elpida small chip)Don't try to insert a simple ram module in there, for sure you'll melt down your motherboard and ddr2 module !!![/quote]oke thanks, but i think it's possible to order one with more mb ram right?

 

[Mike]

[quote author=elroy944 link=topic=738.msg5892#msg5892 date=1275906798][quote author=imayoda link=topic=738.msg5887#msg5887 date=1275904385]WATCH OUT!!!! That thing formerly is a known connector but it has different mapping on power and data ports, almost for sure.Think about it: on the original board we have installed on, there is the CPU and the ram module (the elpida small chip)Don't try to insert a simple ram module in there, for sure you'll melt down your motherboard and ddr2 module !!![/quote]oke thanks, but i think it's possible to order one with more mb ram right?[/quote]Nope, they're all 128MB. Someone here was going to have a go at soldering a different BGA memory chip on to increase it, but I'm not sure what happened with that.

 

[imayoda]

[quote author=Mike link=topic=738.msg5918#msg5918 date=1275911831][quote author=elroy944 link=topic=738.msg5892#msg5892 date=1275906798][quote author=imayoda link=topic=738.msg5887#msg5887 date=1275904385]WATCH OUT!!!! That thing formerly is a known connector but it has different mapping on power and data ports, almost for sure.Think about it: on the original board we have installed on, there is the CPU and the ram module (the elpida small chip)Don't try to insert a simple ram module in there, for sure you'll melt down your motherboard and ddr2 module !!![/quote]oke thanks, but i think it's possible to order one with more mb ram right?[/quote]Nope, they're all 128MB. Someone here was going to have a go at soldering a different BGA memory chip on to increase it, but I'm not sure what happened with that.[/quote]Hmmm.. bga soldering... nasty thing..I belive that using a more complex ddr2 chip but with same logical/power pin design compatibility, could work.. uboot auto assigns available ram..the question is: does this processor support more than 128MB adressing????i noticed it work well on the cina laptops with only 64 in some models around ebay, based on same SOC..i'd rather look for the kernel source.. with that in our hands we could do many improvements (128MB can be enough for android).. i say better sleep compatibility, better wireless handling or upgrading the chipset itself with one better supported in kernel (and cooler maybe) or adding compcache for real fast swapping region... led management, button allocations and so on

 

[elroy944]

i think one day it's possible. i contacted eken and asked them, let's wait for an answer

 

[zuber5]

Nanya memory - the 256 MB module is a different format (2x128MB) and has a different pinout.

 

[imayoda]

[quote author=zuber5 link=topic=738.msg6217#msg6217 date=1276011015]Nanya memory - the 256 MB module is a different format (2x128MB) and has a different pinout.[/quote]128MB will be enough... with kernel sources many improvements can be done..

 

[itanium]

[quote author=imayoda link=topic=738.msg5923#msg5923 date=1275912781][quote author=Mike link=topic=738.msg5918#msg5918 date=1275911831][quote author=elroy944 link=topic=738.msg5892#msg5892 date=1275906798][quote author=imayoda link=topic=738.msg5887#msg5887 date=1275904385]WATCH OUT!!!! That thing formerly is a known connector but it has different mapping on power and data ports, almost for sure.Think about it: on the original board we have installed on, there is the CPU and the ram module (the elpida small chip)Don't try to insert a simple ram module in there, for sure you'll melt down your motherboard and ddr2 module !!![/quote]oke thanks, but i think it's possible to order one with more mb ram right?[/quote]Nope, they're all 128MB. Someone here was going to have a go at soldering a different BGA memory chip on to increase it, but I'm not sure what happened with that.[/quote]Hmmm.. bga soldering... nasty thing..I belive that using a more complex ddr2 chip but with same logical/power pin design compatibility, could work.. uboot auto assigns available ram..the question is: does this processor support more than 128MB adressing????i noticed it work well on the cina laptops with only 64 in some models around ebay, based on same SOC..i'd rather look for the kernel source.. with that in our hands we could do many improvements (128MB can be enough for android).. i say better sleep compatibility, better wireless handling or upgrading the chipset itself with one better supported in kernel (and cooler maybe) or adding compcache for real fast swapping region... led management, button allocations and so on[/quote]datasheet says it can handle up to 512MB. However does not quote which modules are suitable.

 

[mydnight]

Are all WM/VT 8505 modules the same pinout? (i.e. is the "wm8505" the CPU, or the entire SoM?) If so, it may be possible to buy one of the cheap smartbooks that are based around the WM8505 (Possibly used/broken screen etc. for extra cheapness) but have more memory and reflash them for use in the M001.

 

[elroy944]

most of the cheap ones has 128mb ram :-[

 

[mydnight]

I doubt it matters anyways -- I just read the data sheet for the wm8505, and apparently it just references the processor and not the entire module

 

[xboxhacker]

I have SMD/BGA soldering equipment. If some one can post a link to the data sheet, and suggest a capable RAM IC I will de-solder and reball a new IC.EDIT: found the datasheet...lol

 

[Peter Dark]

This dose rather Leave another Question if its not a ram slot what is it for ? cant help wondering

 

[imayoda]

This dose rather Leave another Question if its not a ram slot what is it for ? cant help wondering

lol.. it's for SOC.. that thing is ram+cpu+usb not only a dimm raiser