What does this mean?

[Scone_i]

Hi! I just installed 4x2gb ddr2 samsung 800mhz ram.

I had 4x1gb ddr2 kingston 800mhz ram.

I overclocked my cpu and when i had the kingston ram i think i had FSB:DRAM 1:2

Now it says it's 1:1

Does that mean now my memory frequency is 400mhz instead of 800mhz?

I would like to know what the FSB:DRAM means.

[corrado33]

I'm guessing you overclocked your CPU by using the base clock and not a multiplier?

 

Your ram is running at 400 MHz now. The ratio is just like the multiplier for the CPU speed. You can attempt to force it to 1:2 if you want the memory to run at 800 MHz, but that depends on your base clock. The memory can only run at some pre defined ratio of the base clock. So if you OCed your base clock, the memory would be OCed as well unless you downclocked, which is what the bios/mobo did for you automatically. 

[Mira Yurizaki]

Well if we went by this answer: http://www.tomshardware.com/answers/id-2289757/fsb-dram-ratio-explain.html#r14124139

 

Quote

That's a bit of a lengthy explanation, but it hits the important points. What I don't understand though is why you're trying to obtain a 1:1 ratio. To do so, you would have to crank your FSB all the way up to 800Mhz (which is absurd) or downlock your memory to 200Mhz, which is below the minimum supported by DDR3. There is no benefit to a 1:1 ratio, this is just a rumor that's been floating around the internet for at least the past decade.

Either your FSB is cranked up to 400MHz, or your DRAM went down to 200MHz (or is it 100MHz? I forget)

[knightslugger]

DDR = Double Data Rate

 

400MHz x 2 = 800MHz

 

You're at 1:1, which is where most folks go unless chasing exotic clocks.

[Scone_i]

8 minutes ago, knightslugger said:

DDR = Double Data Rate

 

400MHz x 2 = 800MHz

 

You're at 1:1, which is where most folks go unless chasing exotic clocks.

Oh okay, thanks. While i was waiting i just checked and it is indeed running at 800mhz

1 more question. When i reset the memory settings in my bios then my fsb:dram ratio is 5:6

Which is better, 5:6 or 1:1? Or can i get 1:2 somehow?

[knightslugger]

unless you are chasing exotic speeds, leave it at 1:1. A 5:6 ratio is basically telling it to overclock at a 1.2x factor. 1:2 would be a 2x factor. so on and so forth.

 

it's a good way to get mixed up.