[SOLVED] Is there any difference between these 2 rams?

[droopy91]

Hynix - HMT325S6BFR8C-H9 / PC3-10600S-9-10-B1

Hynix - HMT125S6TFR8C-H9 / PC3-10600S-9-10-F2

from what i can tell they are exactly the same, so why the different product numbers? is there a different manufacture year or something else?

actually visually the b1's have 4x processors on each side and the f2's have 8x processors on each side. i have no clue what the significance of this is because the specs themselves, clock and frequency are the same on them as well as everything else than comes up from a little google search.

 

[tennis2]

First one is single rank.

Second one is dual rank.

 

[jojesa]

Which laptop model are you trying to upgrade?

They are similar but they are not exactly the same.

The HMT325S6BFR8C is a single rank based on on 2Gb B-die.
The HMT125S6TFR8C is a dual rank based on on 1Gb T-die.
They were manufactured on the same week, 9-10 (year-week)
Having RAM chips on both side does not automatically means is a dual rank module.
The H9 means DDR3-1333 9-9-9.

 

[tennis2]

Single rank generally offers slightly better performance. Although, for what we're talking here, performance doesn't really matter.

If you're trying to add a new stick to an existing one to achieve "dual channel" operation, it's generally advised to match the ranks of the new stick with the existing one to give you the best compatibility. If the motherboard cannot run dual channel in the first place, then it doesn't really matter.

 

[droopy91]

Basically I wanted to know which was better to keep. I have a few laptops, I'm assuming two ram slots is standard for laptops because all of mine have two slots. i have hp pavillion g6 notebook and lenovo g550. Mostly used for school and online browsing.

 

[droopy91]

Basically I wanted to know which was better to keep. I have a few laptops, I'm assuming two ram slots is standard for laptops because all of mine have two slots. i have hp pavillion g6 notebook and lenovo g550. Mostly used for school and online browsing.

So I should just keep the single ranks?

I also have 2 other ram sticks 2gigs each of i believe dual rank. They also have 8 processors on both sides and one does say 2rx8.
One samsung, One kingston, they are also both 1333 at 9-9-9, is the best way to know they are legit with cpu-z? I don't recall where I got them probably salvaged from another laptop.

 

[tennis2]

Ranks is the number of rows (not columns) of chips on one side of the stick.

 

[jojesa]

So I should just keep the single ranks?

I also have 2 other ram sticks 2gigs each of i believe dual rank. They also have 8 processors on both sides and one does say 2rx8.
One samsung, One kingston, they are also both 1333 at 9-9-9, is the best way to know they are legit with cpu-z? I don't recall where I got them probably salvaged from another laptop.

Single rank usually performs better and you could mix single and dual.
You could test each one, if one does not work, just try another module.
A simple way to tell the rank of a RAM module is by looking at the label.
Single Rank modules have a 1Rx (e.g. 1Rx8 or 1Rx16), Dual Rank Memory has a 2Rx (e.g. 2Rx8 or 2Rx16), and Quad Rank 4Rx (e.g. 4Rx4)

FYI
A RAM Module with chips on one side of the PCB is called single-sided.
A RAM Module with chips on both sides of the PCB is called dual-sided.
A RAM module with chips on one side (single-sided) of the PCB, could still be single-ranked, dual-ranked, or quad-ranked.
A RAM module with chips on both sides (dual-sided) of the PCB, could still be single-ranked, dual-ranked, or quad-ranked.