Rampage Extreme - getting FSB:DRAM ratio 1:1 and clocked to specs

[regchamp]

I can't seem to get my FSBRAM ratio away from 1:2, I want it at 1:1, because me $310 ram is running at 800mhz instead of 2000 it is rated at. Here are my specs:

- Asus Rampage Extreme X48
- E8600 CPU

- F3-16000CL9D-4GBGT1 (G Skill Ram) the best they make http://www.newegg.com/Product/Product.aspx?Item=N82E16820231218

- Multiple HDDs

- Bigwater 780e watercooling (CPU and Northbridge)

- PC Power and Cooling 1000w PSU

- ATI 4870X2 GPU

I'm running the RAM at 1.9volts, I am used to EVGA boards and this Asus board makes it difficult to get 1:1 ratio, can't figure out what options to change.

I don't even necissarily want 2000mhz - 1800 or even 1600 would be fine with me, but not 800 which I am getting.

Thanks for the help

 

[MaDMagik]

800Mhz = DDR3 1600, and i believe thats the highest "official" ddr3 speed, so thats what theyre running at by default. 1:2 ratio is your only way of getting your ram close to its spec, if you set it to 1:1 it will run at 400MHz(ddr3 800) as that is your FSB speed(im guessing, but seems to me that it is).

 

[regchamp]

So what your saying is that when CPU-Z reports 800mhz for the DRAM frequency, it is in fact 1600 for DDR-3? If so that is great. HOWEVER, my ram is 310$ ram, the best stuff out there pretty much, and says it will overclock to 1800 and even 2000. So why can't I get it to 1800 or 2000?

 

[MaDMagik]

Yes, ddr3 1600 runs at 800mhz, guaranteed. And yes, you can make it run at ddr3 1800 or even 2000, but its not a flick of a switch.

I assume that your cpu is already overclocked and running on FSB 400MHz.
Your memory speed is an effect of that value and the FSB:RAM ratio. As i said earlier, if you set the 1:1 ratio your memory will run at 400mhz too, as thats the fsb base clock. At the moment youre using 1:2 ratio which gives you 800Mhz for memory on fsb 400MHz. Now i think that 1:2 is the highest ratio available, so if you want to increase memory speed you have to raise the FSB frequency above 400MHz. That will result in further cpu overclock unless you reduce the CPU multiplier.
If you know how to do the whole thing than im pretty sure you can easily reach fsb 450 or 500 and have your ram running at full speed.