How do i tell what kind of ram a stick is?

[Cawchy87]

I know that it is old. The only markings on the sticker are:

128mb,SDR,DIMM,H
16VHS 114001

And on the chip itself:

Infineon
HYB39S256160DT-7.5

And how do i tell how many pins there are on it? where do i count?

Thanks!

 

[Shooters]

128mb,SDR,DIMM,H

That means it's a 128MB, single data rate, dual inline memory module

Infineon HYB39S256160DT-7.5

HYB = memory components (identifier used by Infineon)
39 = 3.3V
S = single data rate SDRAM
256 = chip density (256 megabits)
16 = memory organization (x16)
o = product variation
D = die revision
T = TSOP packaging
7.5 = 7.5ns PC133 3-3-3

So in other words you have a 128MB PC133 single data rate module with timings 3-3-3. This is the 168 pin kind found on most Pentium3 and early Athlon/Duron systems.

 

[Cawchy87]

wow, i am really impressed!

 

[Shooters]

I like to spend my free time memorizing chip markings.

j/k 🙂

Actually, most manufacturers have chip markings on their website to help people identify what they have.

Look at the "Nomenclature" link under Additional Information at the bottom.

 

[Tostada]

If you have a Slot 1 P2, I think all of them took that kind of memory.

If it fits the board, it's the right kind.

 

[Shooters]

Pentium2's took PC66 and PC100 memory, so your PC133 module should fit into the motherboard like the above poster said.

What you do have to watch out for is the fact that the module uses 256mbit chips. Some earlier motherboard chipsets weren't compatible with modules that used such a high chip density.

See this FAQ for more details.