ddr400 question

[dirkpitt]

Hello guys,

I just installed a corsair 512 stick on an Asus P4c800 deluxe board, is it natural that during bios POST the mem speed is indicated as 266, is this due to having only one stick? do I need a pair to function as ddr400? or was I duped, but the label on corsair mem is 5123200?

thanks ya all

[kato2274]

I'd check bios settings for memory speed.

[dirkpitt]

there are no speed setting in bios

[Radical Dreamer]

I'd say its a setting as well, maybe in the bios or on hte board itsself. Corsair is very good RAM so I doubt you were duped

[kato2274]

it's DRAM frequency setting under the advanced options of the bios. set it to 400mhz and see what happens . . . . or if it's set to 266mhz, set it to auto and see if it picks up the RAM at 400

found it in the manual of all places

j/k

let us know if it works

[confus-ed]

There'll be a setting somewhere in bios that is matching the memory bus to the FSB ... which looks like what kato found in the mannual ... this will force the machine to run its memory synchronously (at the same speed as the fsb) this would be a 'default' setting ...

This page will help you

It is indeed 'dual channel' so to get 'full whack' you need paired memory ... (Don't you think about stuff like this before you buy ??? ... obviously not ! )

[dirkpitt]

Hi guys,

I just read that the Asus board needed exactly paired memory, otherwise its going to run in single channel mode, so this I guess is reason why its running in 266. I was planning for 1 GB so, that's why I bought 1 stick first, I guess i'll just wait for the next stick to test it finally if it will run in 400 mode

thanks guys

ur very helpful as usual

[silencio]

Originally posted by dirkpitt
Hi guys,

I just read that the Asus board needed exactly paired memory, otherwise its going to run in single channel mode, so this I guess is reason why its running in 266. I was planning for 1 GB so, that's why I bought 1 stick first, I guess i'll just wait for the next stick to test it finally if it will run in 400 mode

thanks guys

ur very helpful as usual

I'd imagine that corsair won't give you a problem but asus does have a list of supported memory for that board.

P4C800 Deluxe DDR400 Memory Qualified Vender List
(For optimum performance and overclocking stability)

Size Vendor Model Brand Component Maximum Dimms Supported
256MB Transcend TS32MLD64V4F3 Samsung K4H560838D-TCC4 2
512MB Transcend TS64MLD64V4F3 Samsung K4H560838D-TCC4 2
256MB Transcend TS32MLD64V4F3 Mosel V58C2256804SAT5 4
512MB Transcend TS64MLD64V4F3 Mosel V58C2256804SAT5 1
256MB Kingston KVR400X64C25/256 Winbond W942508BH-5 4
512MB Kingston KVR400X64C25/512 Winbond W942508BH-5 2
256MB Kingston KVR400X72C25/256 Winbond W942508BH-5(ECC) 2
512MB Kingston KVR400X72C25/512 Winbond W942508BH-5(ECC) 2
256MB Winbond W9425GCDB-5 Winbond W942508CH-5 4
512MB Winbond W9451GCDB-5 Winbond W942508CH-5 4
128MB Infineon HYS64D16301GU-5-B Infineon HYB25D256160BT-5B 4
256MB Infineon HYS64D32300GU-5-B Infineon HYB25D256800BT-5B 4
512MB Infineon HYS64D64320GU-5-B Infineon HYB25D256800BT-5B 2
256MB Samsung M381L3223ETM-CCC Samsung K4H560838E-TCCC(ECC) 2
512MB Samsung M381L6423ETM-CCC Samsung K4H560838E-TCCC(ECC) 4
128MB Micron MT8VDDT1664AG-403B2 Micron MT46V16M8-5ESB 1
256MB Micron MT16VDDT3264AG-403B2 Micron MT46V16M8-5ESB 1
256MB Micron MT16VDDT3264AG-403B5 Micron MT46V16M8-5TESB 2
256MB Hynix HYMD232646B8J-D43 AA Hynix HY5DU56822BT-D43 4
512MB Hynix HYMD264646B8J-D43 AA Hynix HY5DU56822BT-D43 4
256MB TwinMos M2G9I08AFATT9F081AA4T TwinMos TMD7608F8E50D 1
512MB TwinMos M2G9J16AGATT9F081AA4T TwinMos TMD7608F8E50D 1
256MB Apacer 77.10636.465 Samsung K4H560838D-TCC4 4
512MB Apacer 77.10736.464 Samsung K4H560838D-TCC4 2
256MB ADATA MDOAD5F3G315B1ECZ ADATA ADD8608A8A-5B 2
256MB ADATA MDOSS6F3G31JB1EAE Samsung K4H560838D-TCC4 2
256MB ADATA MDOWB5F3G316B1EAE Winbond W942508CH-5 2

[confus-ed]

.... "supported memory" baloney !!!

Any memory that won't support its rated speed is substandard ... try & see it the right way around !!!!

Oh flipping edit !!

I see now why Silencio pasted up that great long list ... dirkpitt said "Asus board needed exactly paired memory" ... no it doesn't !!! it needs exactly paired functioning memory, so capable of same cas & ras recharge etc & set to use the same for each slot ... (prolly setting everything at 'auto' in bios will 'confuse' matters, as auto for one isn't the same as auto for another...) ... the simplest method of getting this is to buy another identical stick, but if you know just what each can do you can set it up to use the 'best' speed of the 'worst' stick ...