difference between ram

[Cupar19]

i have an acer m3800 which wont boot with certain ram the ram i have says

1gb 1rx8 pc3 -10600u from kingston

2gb 2rx8 pc3 -10600u -9 -10 -b0 (2 of these) 1 from hynix and one from elpida

(the one that it wont boot with but is conformed to work) 2gb 1rx8 pc3 -10600u -09 -11 -a1 from samsung

the system only wont boot with the samsung, even on its own

 

what is the difference between the ram especially the end bits that are like this (10600u -09 -11 -a1) as i dont know what that means and does any one know why it wont boot with the samsung ram

[Mira Yurizaki]

The 10600 means its speed. Normally you would see a DDR rating, but you can convert it to a PC rating. It's basically two ways of reporting the same thing.

 

The "-9 -10" and  "-9 -11" are likely timing values. Lower numbers at the same speed normally mean better, but for all practical purposes, you're not going to notice it in this case.

 

Not sure what the "a1" or "b0" means.

 

If you need to replace the RAM, focus on the speed rating. In this case your system uses DDR3-1333/PC3-10666 (if the PC rating is close enough, it's compatible)

[Cupar19]

5 minutes ago, M.Yurizaki said:

The 10600 means its speed. Normally you would see a DDR rating, but you can convert it to a PC rating. It's basically two ways of reporting the same thing.

 

The "-9 -10" and  "-9 -11" are likely timing values. Lower numbers at the same speed normally mean better, but for all practical purposes, you're not going to notice it in this case.

 

Not sure what the "a1" or "b0" means.

 

If you need to replace the RAM, focus on the speed rating. In this case your system uses DDR3-1333/PC3-10666 (if the PC rating is close enough, it's compatible)

ok thanks do you have any idea why thesamsung might not be working becasue the only difference is the a1 at the end and it works on other systems

[Mira Yurizaki]

3 minutes ago, Cupar19 said:

ok thanks do you have any idea why thesamsung might not be working becasue the only difference is the a1 at the end and it works on other systems

By not working do you mean the system doesn't boot, the system doesn't see it, or adding it doesn't increase the system RAM capacity?

[Cupar19]

3 minutes ago, M.Yurizaki said:

By not working do you mean the system doesn't boot, the system doesn't see it, or adding it doesn't increase the system RAM capacity?

doesnt boot just continuous beep

[Mira Yurizaki]

2 minutes ago, Cupar19 said:

doesnt boot just continuous beep

Does the RAM stick work by itself in the machine?

[Cupar19]

Just now, M.Yurizaki said:

Does the RAM stick work by itself in the machine?

nope but does on another machine

[Mira Yurizaki]

3 minutes ago, Cupar19 said:

nope but does on another machine

If you've tried installing the modules in different ways and it still doesn't work, it could just be the computer doesn't like that RAM. As for why, I don't know.

[Cupar19]

5 minutes ago, M.Yurizaki said:

If you've tried installing the modules in different ways and it still doesn't work, it could just be the computer doesn't like that RAM. As for why, I don't know.

ok then but thanks for the info