G.Skill Model number difference

[arandomdudefromslo]

So i will buy F3-10600CL9S-4GBNT for my ASRock G41C-GS with a Intel Core 2 Quad Q9550.
I was googling around and found a amazon and a newegg RAM:
AMAZON - http://www.amazon.de/G-Skill-PC3-10667-Arbeitsspeicher-240-polig-DDR3-RAM/dp/B004KVEYM0?ie=UTF8&psc=1&redirect=true&ref_=ox_sc_act_title_1&smid=A3JWKAKR8XB7XF (it is in german)
NEWEGG - http://www.newegg.com/Product/Product.aspx?Item=N82E16820231422&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-Skimlinks-_-na-_-na-_-na&AID=12087162&PID=3899435&SID=skim1402X558040Xba101d0a4dc4329739298ffbaad2088a&utm_medium=affiliates&utm_source=afc-Skimlinks

Why is there a model name difference?
Newegg is F3-10600CL9D-8GBNT
Amazon is F3-10600CL9S-4GBNT

Is it because from newegg these are dual channels and that's why there is the D for dual instead of S for single
And the 4G on Amazon cause there is only 4Gigs in the whole package while on newegg there is a total of 8Gigs in the package. Am I right or wrong?

 

[BadActor]

You are entirely correct.

http://www.gskill.us/forum/showthread.php?t=10564

 

[arandomdudefromslo]

You are entirely correct.

http://www.gskill.us/forum/showthread.php?t=10564

Do you maybe know if it will work on that motherboard?

 

[BadActor]

It's not on the QVL so I couldn't say for certain, but it should. Remember to change the jumper on the board to the DDR3 position and reset the CMOS when installing the new sticks.

 

[Tradesman1]

The D indicicates there are 2 sticks in the set (S for single stick) and yes they will work, this is an older line that uses low denisty mem ICs which are required for the socket 775, todays DDR3 uses high density ICs that aren't compatible