Effective Memory Clock question

[TylerHutzler]

I'm wondering why a 4gb GPU has a less effective Memory Clock than a 2gb GPU:

Less effective Memory clock with 4gb:

1)http://www.newegg.com/Product/Product.aspx?Item=N82E16814127748&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

2 examples of 2 GPUs that have a higher Memory Clock with only 2gb:

1)http://www.newegg.com/Product/Product.aspx?Item=N82E16814133498&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

2)http://www.newegg.com/Product/Product.aspx?Item=N82E16814500307&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

 

[qwertyDS]

it doesnt matter