Well, Eug, you see in my post I gave you a press release that Hynix made just a little more than 2 months ago selling 128Mb (8=128MB) DDR-SDRAMs for 10$ each. That means you would need 80$ to arm a card with 128MB of 375MHZ DDR-SDRAM. That means that 256MBit SDRAMS running at that frequency would probably be 20$, unless they've improved their process. That, times 8, would equal 160$. Or thereabouts. That's for 375MHZ RAM. At December last year's pricing. So now i've made up for that, right? 
Anyways, I can make a handy chart for all you guys (this is really simple math, so it's nothing new)
10NS=100MHZ
9.5NS=105MHZ
9NS=111MHZ
8.5NS=117MHZ
8NS=125MHZ
7.5NS=133.3MHZ
7NS=142.8MHZ
6.5NS=153MHZ
6NS=166MHZ
5.5NS=181MHZ
5NS=200MHZ
4.5NS=222.2MHZ
4NS=250MHZ
3.3NS=300MHZ
3NS=333MHZ
2.7NS=370MHZ
2.5NS=400MHZ
2.2NS=454MHZ
2.0NS=500MHZ
1.9NS=526MHZ
1.8NS=555.5MHZ
1.7NS=588MHZ
1.6NS=625MHZ
1.5NS=The devil's number. (Demonic RAM, hah!
)
1.4NS=714MHZ
1.3NS=769MHZ
1.2NS=833MHZ
1.15NS=869MHZ
1.1NS=909MHZ
1.05NS=952MHZ
1.0NS=1GHZ
Hope that helps you if you're don't wanna spend the effort to calculate everything.
(Took me 5 min)
(Edit to switch to list format, instead of tables. Darn, this board doesn't use an equispaced system.
Anyways, I can make a handy chart for all you guys (this is really simple math, so it's nothing new)
10NS=100MHZ
9.5NS=105MHZ
9NS=111MHZ
8.5NS=117MHZ
8NS=125MHZ
7.5NS=133.3MHZ
7NS=142.8MHZ
6.5NS=153MHZ
6NS=166MHZ
5.5NS=181MHZ
5NS=200MHZ
4.5NS=222.2MHZ
4NS=250MHZ
3.3NS=300MHZ
3NS=333MHZ
2.7NS=370MHZ
2.5NS=400MHZ
2.2NS=454MHZ
2.0NS=500MHZ
1.9NS=526MHZ
1.8NS=555.5MHZ
1.7NS=588MHZ
1.6NS=625MHZ
1.5NS=The devil's number. (Demonic RAM, hah!
1.4NS=714MHZ
1.3NS=769MHZ
1.2NS=833MHZ
1.15NS=869MHZ
1.1NS=909MHZ
1.05NS=952MHZ
1.0NS=1GHZ
Hope that helps you if you're don't wanna spend the effort to calculate everything.
(Edit to switch to list format, instead of tables. Darn, this board doesn't use an equispaced system.