how to determine ram NS rating?

icetrey47 · Aug 11, 2003, 03:17 PM

i just got a Radeon 9800 Non-Pro ... this is the information that was on the ram chips ...

SAMSUNG 322
K4D263238E - GC33
WVC192FF KOREA

how do i determine if this ram is, say 3.3ns, or different? also, what are the best utils to use to overclock this card and determine if its stable or not?

Vampyromaniac · Aug 11, 2003, 11:15 PM

Look at the last numbers in GC33 . . . that means 3.3ns
For overclocking, I like Rivatuner

~~WyreTheWolf~~ · Aug 12, 2003, 12:27 AM

1000/3.3 = 303MHz ... that is the max theoretical speed that ram can attain.

Aug 12, 2003, 02:28 PM

wait... wyre explain that again please... i thought LOWER ns of ram was better...

~~WyreTheWolf~~ · Aug 12, 2003, 11:14 PM

Quote:

Originally posted by generalstupid
wait... wyre explain that again please... i thought LOWER ns of ram was better...

It is ... follow the math...

1000/5 = 200

1000/4 = 250

1000/3.3 = 303

1000/3 = 333

1000/2.8 = 357

1000/2.5 = 400

1000/2.2 = 454

1000/2.0 = 500

really simple math

here is the formulas:

1000/ x = s this formula will give the SDR speed

(1000/ x)*2 = s this formula will give you DDR speeds

x is the nanosecond rating of the memory chip.
s is the maximum theoretical operating speed of the memory chip.

Hope that helps you out a bit.

Aug 13, 2003, 06:08 PM

ok... lol... i just didnt think to do the math... i was thinking of 3.3/1000 where HIGHER is better...

Bart1987 · Aug 17, 2003, 04:42 AM

I have a radeon 9700 non pro.
and this is my memory code

infineon

hyb25d128323c-3.3

so it is 3.3ns but i thought r9700 non pro had 3.6ns.
and i can't get my memory higher than 290.
why is that?
if you have any idea, please post it

Aug 17, 2003, 09:25 AM

you probably can't get your memory higher than 290 because of cooling... and yes, it's 3.3 ns