Corsair Dominator XMS2 4GB (2X2GB) DDR2 1066 MHz Dual Channel Kit Showing As 400 MHz?

[TricksterMatt]

I just noticed this when I was looking at CPU-Z and Everest Ultimate... It says my DRAM Frequency is 400.0 MHz, FSB DRAM 1:2, 5-5-5-18, my memory is PC2-6400 (400 MHz), @ (400 MHz) 5-5-5-18, @ 270 MHz 4-4-4-13... I went into my BIOS and changed DRAM frequency to 1066 MHz, and then when I opened up CPU-Z and Everest ultimate, it says my DRAM Frequency 533.3 MHz, FSB DRAM 3:8, 6-12-12-30, and everything else is the same. Im guessing 533.3 x 2 = 1066.6 MHz right? So is my memory now running fully at 1066 MHz like it should be? Thanks

Yup you are correct if it is running at 1066 so nothing to worry about here. DDR = double data rate and cpu-z I believe only records one side so doubling = correct.

[TricksterMatt]

Thanks Duxx, so it should be running now fully at 1066 MHz? But it says 6-12-12-30-42 timings on CPU-Z (this is at 1066 MHz DRAM Frequency in BIOS)... on stock it says 5-5-5-18-23 timings on CPU-Z... Is this correct? And by just changing the DRAM frequency to 1066 MHz in BIOS, does it automatically configures my memory to run fully at 1066 MHz? So should I just leave the DRAM frequency at 1066 MHz (533.3) and everything will be fine and I dont need to change anything else as it is now running at full 1066? Thanks

[Ramo1203]

I have the same kit. You have to set to RAM at 533 in the BIOS, since 533x2=1066. Don't forget to set the timings right too. Write down 5-5-5-18-23 on a sheet of papier, and what they stand for (CL, TRCD, TRAS, etc).

Post a screenshot of the memory tab. If you have the timings set to auto, they may change alongside the frequency, you can 'tighten' the timings by changing them manually depending on how good the RAM is, sometimes this causes instability.

[TricksterMatt]

Here's the memory tab screenshot

[JrRacinFan]

Originally Posted by Ramo1203

I have the same kit. You have to set to RAM at 533 in the BIOS, since 533x2=1066. Don't forget to set the timings right too. Write down 5-5-5-18-23 on a sheet of papier, and what they stand for (CL, TRCD, TRAS, etc).

You goig to have to manually set the timings in bios, hate to reiterate.

Nice ram btw.

[TricksterMatt]

Manually set timings? But when I set my DRAM Frequency to 1066 MHz, my timings changed automatically as you can see on the screenshot. Do I have to use exact same timings as the one in stock in the 1066 MHz speed or not? Thanks

[HTC]

Originally Posted by Ramo1203

I have the same kit. You have to set to RAM at 533 in the BIOS, since 533x2=1066. Don't forget to set the timings right too. Write down 5-5-5-18-23 on a sheet of papier, and what they stand for (CL, TRCD, TRAS, etc).

Look @ 1 of the sticks: it should say the correct timings and voltage.

Copy these values onto BIOS (make sure the ones you change are the correct ones) and you're good to go.

After you're done with these changes, please post another CPU-Z screenie.

[JrRacinFan]

Originally Posted by TricksterMatt

Manually set timings? But when I set my DRAM Frequency to 1066 MHz, my timings changed automatically as you can see on the screenshot. Do I have to use exact same timings as the one in stock in the 1066 MHz speed or not? Thanks

Originally Posted by HTC

Look @ 1 of the sticks: it should say the correct timings and voltage.

Copy these values onto BIOS (make sure the ones you change are the correct ones) and you're good to go.

After you're done with these changes, please post another screenie.

Yup yup, check your SPD tab in CPUz. You can post a screenshot if you wish.

[HTC]

Originally Posted by JrRacinFan

Yup yup, check your SPD tab in CPUz. You can post a screenshot if you wish.

These are mine:

[TricksterMatt]

Screenshot of Spd tab

[HTC]

Originally Posted by TricksterMatt

Screenshot of Spd tab

That's it, dude

Suggest you check for stability: try running OCCT 3.0 (dunno if this prog is compatible with AMD systems) or Prime95.

If it doesn't crash or gives you errors, you're all set. If it does, you need to run MemTest to see if there's anything wrong with your RAM.

[TricksterMatt]

Woo thanks, yeah I'll run prime95 in a minute, So im all done then? All I did was set DRAM Frequency to 1066 MHz in BIOS and it did everything else automatically... So I didnt have to set the timings or anything... So everything should be running at 1066 MHz fully now right?

[JrRacinFan]

Originally Posted by TricksterMatt

Screenshot of Spd tab

That is what the ram is rated for. In previous posts, compare the Memory and PSD tabs, and in bios set timings manual to make them match.

[HTC]

Originally Posted by TricksterMatt

Woo thanks, yeah I'll run prime95 in a minute, So im all done then? All I did was set DRAM Frequency to 1066 MHz in BIOS and it did everything else automatically... So I didnt have to set the timings or anything

It appears i spoke too soon It shouldn't do all that automatically, dude. This is my bad and i apologize for it.

As you can see by that screenie, you will need to change the RAM voltage to 2.1 for it to be OK.

Please look in my earlier post: as you can see, i posted 2 screenies.

You only checked the "SPD" tab but you must also check the "memory" tab as well.

Yah... you have to manually change them in your BIOS to match each other, and then test to make sure that they are stable. Not all RAM is created equal and some chips aren't as good so it may or may not be stable.

[TricksterMatt]

I cant change timings or anything like RAM voltage in BIOS... I can only change DRAM frequency... And my memory tab screenshot is previous posts above, so if I just set DRAM frequency to 1066, is it bad then? I cant find memory timings or RAM voltage or anything like that, and dont want to break my components

[HTC]

Originally Posted by TricksterMatt

I cant change timings or anything like RAM voltage in BIOS... I can only change DRAM frequency... And my memory tab screenshot is previous posts above, so if I just set DRAM frequency to 1066, is it bad then? I cant find memory timings or RAM voltage or anything like that, and dont want to break my components

According to the manual of your board, you must set "AI Overclocking" to manual.

[TricksterMatt]

YES!!!! It's all done... Everest reads DDR2-1066 (533MHz) now... When I changed DRAM Frequency in BIOS to 1066 MHz... My BIOS automatically did voltages and all that crap by it's self to make sure it runs stable at 1066 MHz speed... That explains why my memory timings and voltage options aint there so the user doesn't fu*k up the components. Thanks everyone, so all I had to do was just set DRAM to 1066 in BIOS and its all done... Stable and stuff

As you can see, it says my memory timings are 5-5-5-15 and it is running at 1066 MHz... So can anyone tell me if this is all sorted then?

Looks alright, what does CPU-z say in the memory tab?

[HTC]

Originally Posted by TricksterMatt

YES!!!! It's all done... Everest reads DDR2-1066 (533MHz) now... When I changed DRAM Frequency in BIOS to 1066 MHz... My BIOS automatically did voltages and all that crap by it's self to make sure it runs stable at 1066 MHz speed... That explains why my memory timings and voltage options aint there so the user doesn't fu*k up the components. Thanks everyone, so all I had to do was just set DRAM to 1066 in BIOS and its all done... Stable and stuff

As you can see, it says my memory timings are 5-5-5-15 and it is running at 1066 MHz... So can anyone tell me if this is all sorted then?

Not yet: you must look @ the "memory" tab but you're looking in the "SPD" one.

If the "memory" tab says 533 MHz @ 5-5-5-15, then it's done, yes.

[TricksterMatt]

No it says 6-12-12-30-42... What should I manually change them to in the BIOS? I found out how to change timings and stuff now

[TricksterMatt]

Do you want me to change them to the exact same ones as the stock ones? which was 5-5-5-18-23?

[HTC]

Originally Posted by TricksterMatt

Do you want me to change them to the exact same ones as the stock ones? which was 5-5-5-18-23?

You should change them to what is written on the "SPD" tab of CPU-Z, which is 5-5-5-15.

IMPORTANT: If you don't change the DRAM voltage to 2.1 as well, it will NOT work.