i have Asus P5BMX-Wifi (946 Gz) mobo
e2180 processor
1 GB Twin Moss (533)
1 GB Kingston (667)

i just bought 1 GB kingston...(couldnt find twin moss 533)

earlier i had only TwinMoss and i was able to overclock my cpu to 2.66 Ghz and it was perfect but as soon as i added kingston the system doesnt overclock it manages 2.3 but blue screen errorr comes and restarts. i know the 2 rams are not compatible.. so took off the twin moss ram and tried to overclock it with the kingston one but it doesnt even gives display when i overclock, but when again i put the twin moss alone it can be overclocked to 2.66 ghz

now is this the limit of my board that 667 cant be overclocked more or the kingston memory is just s---...

and when the both memoery are installed the post bios mesages shows "memory dual channel interleaved" wats does interleaved means here

the system runs perfect with both rams on at stock speed.

i cant notice the difference, just applicatons load up quick..

but i play games. would 2.66 ghz with 1 gb single channel ram is faster or 2 Gh with 2 gb dual channel ram is faster

help me out plz

"i know the 2 rams are not compatible"

It's not that they're not compatible, it's just that the DDR533 will force the DDR667 to run at DDR533 speed.

1st of all, you should ALWAYS test new RAM with memtest86 before putting it "into service". If any errors are found, it should be returned/exchanged.

2nd, for best performance, the CPU:DRAM ratio should be 1:1. The E2180 runs at 2.0Ghz (10 x 200MHz) by default, so to hit 2.66GHz, you've apparently jacked up the CPU frequency from 200MHz to 266MHz. That means your RAM should also run at 266MHz (DDR533) to match the CPU.

Kingston ram use to be great, but over the years they started using crappy ram vendors. And they over charge for what they sell.

I personally use http://www.digi4me.com memory pro modules. Good price and good quality.

I would say it's more likely the motherboard can't handle dual channel memory/interleaving at that overclock you are set at. But if you say you put the kingston memory in by itself and it does the same thing, than that is odd.

Have you tried upping the latency(raising it) a bit on the ram? This may take care of the issue.

And after adding the additional gig of 667 DDR2 to my rig, Stalker loads in half the time and every other game seems to work better.

jam i cant set the FSB:DRAM ratio to 1:1 because the mother board just only gives auto, ddr2 533 and ddr 667. (i have set it at 533). i havent checkd the ram memtest86, but at stock speed no problem i played games no problem what so ever. still should i run memtest86?

and outlander, yes the applications load up quick.., ill replace 533 ram with 667 but still when i used only 667 ram it should have overclocked but it didnt may be because my mobo limit is 667 and it cant hanndle more pressure??

IMO, you should ALWAYS run memtest86 to confirm the RAM is good.

i havent used memtest86, dont have floppy drive or wither writeable cd at the moment to make bootable memtestdisk.

and cant understand the procedure for making a bootable disk on hardisk.\

so i have checked the ram through windows ram diagnostics shown on startup screen of vista, it checked ram for nearly an hour, i used extended setings to check every thing and it passed (no errors) so is it enough to say that ram is ok or still i need memtest?????

I tested Vista when it was in beta but haven't touched it since. And I've never used the Microsoft memory diagnostic tool. The nice thing about memtest86 is that it's run from DOS, so Windows isn't involved. Regardless, if the diagnostic test was error free, the RAM is probably good.

then why i am not able to overclock??????

in my opinion mother board cant handle that much ram frequency..

getting a bit comfused. Are you trying to push the twin moss to 667 spec?

Yes, if your mobo does not support over 667, then I would not be supprised if it does not boot up after it is pushed past that limit.

no not pushing the twin moss to 667 spec but earlier when i had twin moss i could take the ram to 533 + 120 = 653 as i increas the FSB from 200 to 260... after that the system was not stable...

now forget twin moss.. when i put kingston alone (667) i could only manage 10 mhz overclock on FSB more than that the system is unstable or doesnt boot..

and the board limit is upto 667 so most propably it cant handle more thatn 667