Quick question - Does Asus P5N-E SLI support downward cpu:memory multiplier?

[RussianSensation]

My Gigabyte DS3's lowest multiplier is 1:1 and I was wondering if the 650 chipset on Asus P5N-E SLI support lower multipliers so I can overclock and not be limited by 667mhz ram?

I am building a computer for a friend and want to overclock his E6400 to about 3.4ghz which would obviously require 850mhz ram. Any help is appreciated from P5N-E owners.

 

[Steven T]

I do 3.4 on that board with e6600. Didnt you see my multiplier question thread?

 

[stevty2889]

The P5N-E allows you to run the memory unlinked, which basicly means you can set the ram to run at a specific speed, and it will state at that speed, no matter what you do to the FSB. You want the ram to stay at 667mhz, set it to unlinked and run it at 667. My roomate is using that board with his E6600.

 

[RussianSensation]

Great. Thanks guys.

 

[Steven T]

Originally posted by: stevty2889 You want the ram to stay at 667mhz, set it to unlinked and run it at 667. My roomate is using that board with his E6600.

Why set it to 667? I bump my ddr2 800 ram to 850 and get 1:1 @ 3.4 (on x8 multi)

...What is the point of a 268mhz overclock?? No real world gain there.

EDIT- My bad, I guess I read things wrong... Yah, just unlink your 667mhz ram. If it's good ram you might be able to bump it up quite a bit though.... Which you might want to think about. You can't hurt ram by overclocking it. Either it runs or it doesnt.

Original poster, what do you mean by "My Gigabyte DS3's lowest multiplier is 1:1 ". Either you're confused or I am confused because I have no idea what you mean by that...

 

[stevty2889]

Originally posted by: Steven T

Originally posted by: stevty2889 You want the ram to stay at 667mhz, set it to unlinked and run it at 667. My roomate is using that board with his E6600.

Why set it to 667? I bump my ddr2 800 ram to 850 and get 1:1 @ 3.4 (on x8 multi)

...What is the point of a 268mhz overclock?? No real world gain there.

EDIT- My bad, I guess I read things wrong... Yah, just unlink your 667mhz ram. If it's good ram you might be able to bump it up quite a bit though.... Which you might want to think about. You can't hurt ram by overclocking it. Either it runs or it doesnt.

Original poster, what do you mean by "My Gigabyte DS3's lowest multiplier is 1:1 ". Either you're confused or I am confused because I have no idea what you mean by that...

He does actualy have his ram OC'd some, first he found what his top CPU speed was then he found what his ram could run at, and just set it to run at that speed.

What the OP means, is that he can't got lower that 1:1..some motherboards have a divider that runs the ram at a lower speed than the FSB. My P5W-DH for example lets you drop the ram to 200mhz(PC2-3200 speed), so you can have the FSB at 266mhz, with the ram at 200mhz for example.

 

[RussianSensation]

Originally posted by: Steven T

Original poster, what do you mean by "My Gigabyte DS3's lowest multiplier is 1:1 ". Either you're confused or I am confused because I have no idea what you mean by that...

Read what stevty2889 said

Back in the days of P4, you could run say 1:1 [i.e. 200FSB: 200mhz ram => 800FSB quad pumped: 400mhz (PC3200)], or 4:3 [i.e. 250FSB:188mhz ram].

This would allow you to overclock without being limited by your ram speed. If you were using PC3200 ram, you could easily overclock P4 2.6ghz from 200FSB to 250FSB and by simply using 5:4 downward ratio, still keep the ram speed around 200 (PC3200). However, with 965/975 chipsets, downward ratios do not work. From what everyone told me in this thread 650/680 chipset allows you to overclock cpu/mobo independently of the ram (so you can buy cheaper 667 ram and save $$$).