2GB ram / No more Dual Channel / P4P800 SE

[N´far]

CPU: P4 2,8Ghz at FSB152 means 4:5 divided ram 190x2, almost DDR400...

I just put another 1Gb into slot 2 and can´t get Dual channel enabled.
In slot 1&3 I´ve 2x 512Mb. These two were runnung Dual Channel before. All 3
moduls are doublesided.

---------------------------------------------------


CPU
Slot 1 -------------------------
Slot 2 -------------------------
Slot 3 -------------------------
Slot 4--------------------------
IDE channels

-------------------------------------------------------

Everest reports single channel mode:
Write: 2747 MB/s ( Before 3700)
Read: 751 MB/s (Before 1700)
Latent: 94.9 ns (Before 104ns (???))

What´s wrong?

CPU: P4B at FSB152 means 4:5 divided ram 190x2, almost DDR400...

Pls. help

 

[doctor.ratt]

CPU: P4 2,8Ghz at FSB152 means 4:5 divided ram 190x2, almost DDR400...

I just put another 1Gb into slot 2 and can´t get Dual channel enabled.
In slot 1&3 I´ve 2x 512Mb. These two were runnung Dual Channel before. All 3
moduls are doublesided.

---------------------------------------------------


CPU
Slot 1 -------------------------
Slot 2 -------------------------
Slot 3 -------------------------
Slot 4--------------------------
IDE channels

-------------------------------------------------------

Everest reports single channel mode:
Write: 2747 MB/s ( Before 3700)
Read: 751 MB/s (Before 1700)
Latent: 94.9 ns (Before 104ns (???))

What´s wrong?

CPU: P4B at FSB152 means 4:5 divided ram 190x2, almost DDR400...

Pls. help

afaik, only nf2 boards support 3dimms in dual channel mode.

dr ratt

 

[Muttley]

CPU: P4 2,8Ghz at FSB152 means 4:5 divided ram 190x2, almost DDR400...

I just put another 1Gb into slot 2 and can´t get Dual channel enabled.
In slot 1&3 I´ve 2x 512Mb. These two were runnung Dual Channel before. All
3 moduls are doublesided.

---------------------------------------------------


CPU
Slot 1 -------------------------
Slot 2 -------------------------
Slot 3 -------------------------
Slot 4--------------------------
IDE channels

-------------------------------------------------------

Everest reports single channel mode:
Write: 2747 MB/s ( Before 3700)
Read: 751 MB/s (Before 1700)
Latent: 94.9 ns (Before 104ns (???))

What´s wrong?

CPU: P4B at FSB152 means 4:5 divided ram 190x2, almost DDR400...

Pls. help

Nothing is wrong, read your MB manual. It says 3 DIMMs will run in single
channel mode.

So to get 2GB total RAM running in Dual Channel mode, your options are 2 x
1GB modules or 4 x 512MB modules.

 

[Muttley]

Nothing is wrong, read your MB manual. It says 3 DIMMs will run in single
channel mode.

So to get 2GB total RAM running in Dual Channel mode, your options are 2 x
1GB modules or 4 x 512MB modules.

Doh... Forgot to add the usual reminder that the two DIMMs in each pair need
to be identical.

 

[N´far]

Thanks guys.

 

[Jdr]

Another case similar to our case -which we could have when upgrading memory