Corsair pc3200 only clocking in at 333mhz?

[cupidr17]

Hello all, I have a TwinX-pc3200LL 2x256 set of ram. To my understanding this should read as DDR400 but when i start up my computer, it only shows up as DDR333. Ive set it by speed and also manually set it at Corsairs default of 2-3-2-6 but still no luck. So i updated my bios and it showed up at DDR400. Then i went in and set it to turbo, but when my system reposted, it showed up at DDR333 again. Why is my RAM being underclocked? Here is my system:

Corsair TwinX-pc3200LL 2x256
Abit NF7-S r2.0 with updated bios from abit
Locked Barton 2500+ running at stock 166x11

Also, if you can provide ram timings that run at DDR400 then i would appreciate it as well.

Please help guys...

[burningrave101]

The reason its running at 333Mhz is because your FSB is 166Mhz and your divider is set to 1:1 and your memory is only going to run as fast as your FSB. Its not going to run DDR400 speeds unless you overclock your FSB to 200Mhz. At least not with a 1:1 divider its not.

[dabiggoober]

That mother board and chip should have no problem doing 200x10 or even 200x11 if you have a good HSF.

To get DDR to run at 400, then FSB has to be 200......

The FSBx2 is the relative frequency of the memory....

So you were seeing 333 because you FSB was set to 166.

You should have no problem overclocking the chip up to 2200 mherzt, with FSB of 200 and multiplier of 10 to 11 range....

[bobmanfoo]

That mother board and chip should have no problem doing 200x10 or even 200x11 if you have a good HSF.

To get DDR to run at 400, then FSB has to be 200......

The FSBx2 is the relative frequency of the memory....

So you were seeing 333 because you FSB was set to 166.

You should have no problem overclocking the chip up to 2200 mherzt, with FSB of 200 and multiplier of 10 to 11 range....

his barton is locked

[Dr.Evil]

if i remember correctly you can run the cpu @166 and the mem @200 but there will be no performance increase, Athlons will perform their best when running in sync with the memory

[dabiggoober]

his barton is locked

I was under the impression that the MB he listed can deal with locked bartons.

[warsawtag]

yes i have the same problem and the exact same setup except i have two sticks of 512mb corsair pc3200 and an amd 2600 thoroughbred.... what do i need to do to get it to run in sync iwth the mobo?

-warsaw

[dabiggoober]

Run chip at 200x10 and memory at "by spd"

If that doesn't work, then chip is locked. I thought the nf7-s could deal with that though. I could be wrong.

[scottatwittenberg]

i thought that only the multiplier is locked on the barton... which means you can still change the FSB.. change the bus to 200 on the barton.. the memory (if it is set to 1:1) will go up to 400, pc3200

do not run the memory async with the chip, becasue it will only decrease performance on an amd.. it is fine for intel though...

so set your fsb higher.

[dabiggoober]

i thought that only the multiplier is locked on the barton... which means you can still change the FSB.. change the bus to 200 on the barton.. the memory (if it is set to 1:1) will go up to 400, pc3200

do not run the memory async with the chip, becasue it will only decrease performance on an amd.. it is fine for intel though...

so set your fsb higher.

I'm not positive but I think the 2600 barton runs stock at 2000 mh so that would 166x12.

Only changing the 166 to 200 and not being able to lower the multiplier would be 200x12 or 2400 mh, close to the maximum possible overclock with AIR and he probably can't do that.

If you can't adjust the multiplier, then slowly increase the 166 on up towards 200 until you are no longer stable. This will slowly increase the memory timings as well. Not to pc3200 but at least above the 2700 you currently are at.