Dual Channel config question

Hi

I am currently using an intel core 2 duo with intel dg965 RYCK motherboard which has 4 memory slots.
i have currently installed 2 kingston 256mb (533mhz) ram modules in slot A1 and B1. i want to install 2 corsair 512 ram (667mhz) ram modules in slots A2 and B2.

My question is will this setup result in a dual channel configuration or not. Please help!!!

oh no!!!

what do u mean stability issues. pleeeease!!! i am a non-techie user and dont want to mess us up the stability of my pc!

so u think i should buy 533mhz 1gb rams. is there much of a performance difference b/w 533 and 667?

Quoting my Gigabyte Users manual:-

"Four memory modules are installed. If you install four memory modules at the same time, The Dual Channel Technology will operate only when those modules have the same memory size and type".

They would all run at the lowest speed in single channel.

So my answer to the O/P has to be no.

Depends, could be as much as double if the CPU pipeline is totally stalled, but typically only around 5% to 15% improvement.

However making 7 changes with 5% to 15% improvements can compound, so with a few tweaks you can double the performance of 'some'* PCs.

*(Usually poorly confirued, or ultra cheaps)

Here is a link that might be helpful-

ftp://download.intel.com/design/m [...] 1101US.pdf

The specs for his mainboard. Google is a wonderful thing.

We all learn!

I agree that to many people do not read there users manual!

Running Dual-Channel with mis-matched sizes is an Intel i900 series chipset feature.

www.intel.com - under products, chipset, etc
http://www.intel.com/products/chipsets/p965/index.htm
http://www.intel.com/design/chipse [...] tation.htm
- Chipset docs are typically for us techs, the main-board manual is geared towards the consumer line of thinking (confuse and baffle with 'market speak').

Don't waste time on main-board manuals, just read the i965 chipset whitepaper / techdoc from the Intel web-site, as it is a chipset specific feature you're all discussing, not a 'Main-board brand' added feature (Most brands don't really add many of their own features, Dual-BIOS / Quad-BIOS being an exception of course - 8) )

Of course in this case, it is Intel making both the main-board and the chipset on it -

Since 100% of main-boards are built by combining chipsets it is easier to familiarise oneself with each major chipset component on the market of the day, than to try and memorise every single decent main-board currently available. -

This should work in dual channel at 533. Make certain that the new corsair memory is 1.8 volts. If the memory is rated for more, it may not consistently work properly.

Just avoid a low-quality "value" brand like Corsair's ValueSelect; go with a good "value" brand like Kingston's ValueRAM.

- This reminder needs to be brought to the attention of more people, such as manufacturers and vendors of mainboards, myself included (I'll be 'borrowing' this for use in my own documents).

- Cheers