First upgrade in years, whats new?

Ice Rich

Ice Rich

Ice Rich

Soldato
Joined
3 Dec 2004
Posts
2,640
Hi all,

I just moved on from my sk.939 system to a budget X2 250 one and I'm confused.

I have a Asrock M3A770DE motherboard and at the moment 2gb of kingston 1066 ram which I am looking to upgrade.

Is ram FSB still related to CPU speed or is it all separate now?

Looking at the specs the motherboard can take upto 1600, what kind of speed difference would I be looking at compared to the current 1066?

Many thanks,
 
Nah, it's still the same, although some BIOS allow you to clock the CPU without affecting memory.

Well from 1066MT/s (266MHz) to 1600MT/s (400MHz) is a 536MT/s (134MHz) difference. So going to 1600MT/s would give you a 4288MB/s bandwidth increase. (Quite a bit if i'm honest.)

Your gonna need atleast 1333MT/s memory to even think about getting it upto 1600MT/s. Unless you put it all on a 2:1 ratio or something.
Hope that helps.
 
Thanks for the help,
What I can't understand though is if 1066 (which i currently have) = 266. Why is my speed still 3Ghz? Should it not be 1.95Ghz 133 x 15?
 
Okay here goes,

For FSB: Real Clock x 4 = Effective clock... (266 x 4 = 1066MT/s)
For DRAM: Real Clock = Twice FSB clock x 2... (533 x 2 = 1066MT/s)

For CPU Core Clock: FSB Real Clock x Multiplier... (266 x 15 = 3.99GHz)

Hope that helps you, there are other things involved such as FSB: DRAM ratios. I suggest reading some articles :rolleyes:
 
Is it right I can only see 1600 in tri speed (3 sticks) for sell?
1333 seems to be a popular choice but not that many 1600.

Also if your calculations are correct:
CPU Core Clock: FSB Real Clock x Multiplier... (266 x 15 = 3.99GHz) (as i'm @ 3Ghz)

I imagine I am running with a 1:3 divide mem to fsb (as i'm 3Ghz). If I were to get 1600speed - would I be able to do 1:1? if so, what kind of increase would I see real term.
 
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