ram pro

[thesnake]

hi i upgreaded ram to 1 giga in preparation to install the 6600gt vga

now i have 2 256 ram chips installed and in the middle slot i have an 512mn chip but in my sys info

i see only 768 mb ram!!!!

i installed everest and try to read the moudels it say this:

ok i opened the program went to mothet board then clicked spd:

i see this:

Device Description

DIMM1: Mosel (256 MB PC3200 DDR SDRAM)

DIMM2: [ TRIAL VERSION ]

DIMM3: [ TRIAL VERSION ]

......................................................................

Field Value

Memory Module Properties

Module Name Mosel

Serial Number None

Module Size 256 MB (1 rank, 4 banks)

Module Type Unbuffered

Memory Type DDR SDRAM

Memory Speed PC3200 (200 MHz)

Module Width 64 bit

Module Voltage SSTL 2.5

Error Detection Method None

Refresh Rate Reduced (7.8 us), Self-Refresh

.........................................................

Field Value

Memory Module Properties

Module Name [ TRIAL VERSION ]

Serial Number None

Module Size 512 MB (2 ranks, 4 banks)

Module Type [ TRIAL VERSION ]

Memory Type DDR SDRAM

Memory Speed PC3200 (200 MHz)

Module Width 64 bit

Module Voltage SSTL 2.5

Error Detection Method None

Refresh Rate Reduced (7.8 us), Self-Refresh

.....................................................................

Field Value

Memory Module Properties

Module Name [ TRIAL VERSION ]

Serial Number 1702ACD1h (3517710871)

Manufacture Date Week 2 / 2003

Module Size 256 MB (1 rank, 4 banks)

Module Type [ TRIAL VERSION ]

Memory Type DDR SDRAM

Memory Speed PC3200 (200 MHz)

Module Width 64 bit

Module Voltage SSTL 2.5

Error Detection Method None

Refresh Rate Reduced (7.8 us)

....................................................................

but when i clicked on the computer icon then dmi then memory moudels i got this for one of the 256mn chips

Field Value

Memory Module Properties

Socket Designation h

Installed Size Not Installed

Enabled Size Not Installed

and at my original system info i see only 768mn of ram not one giga...plz

tell me what is happening thx

[thesnake]

befor anyone eals make effort on this thread i will post the solution my self(better than deleting the post in case somone needed to learn)

here is what a guy replyed to me at pc tech forum  and he was 100% right

The info you were able to get said the 512MB DIMM has 2 ranks. My guess would be your motherboard doesn't support double-ranked DIMMs. If you've only got one ChipSelect wire going to the socket you'll only be able to access one rank and you'll only be able to see 256MB on it. The motherboard manual should say if it supports double-ranked DIMMs. If not, you'll have to exchange that DIMM for a single-ranked one (probably at a higher price).

Aside from the DIMM itself, it's also possible there's a problem with the motherboard or that one slot supports double-rank and the other two don't. You could try swapping the 512MB DIMM into the other slots and see if it gets you the full 512MB there.

Whatever the reason, I would expect the shop to have tried it out to make sure it worked. You may want to be careful in any future dealings with them.

............................................................

i moved the 512 chip to the left slot and it  worked

[erjin999]

...and that is the kind of thing I think it would have taken us a while to get to. Thanks for leaving it here in case it helps others.