RAM is halved?


S

Samir

I have a Jetway V266B Motherboard. I added a 1GB Ram
stick to the Mobo on it's own and when I boot up it's
detected as 512MB.

My Motherboard can handle, i think around 2GB RAM.

Thanks,

Samir
 
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G

Guest

What does the bios detect? Perhaps if you have 4 slots to insert ram they can only handle 512. 512x4=2gig..
Check to see what the bios detects it as and then perhaps check your mainboard manual for the possible ram configurations.
 
G

Guest

Thanks for the quick reply. The V266b only has 2 slots for DDR :( lo

Bios detects something like 5124......blah.

Obviously not right. Im trying to work out if the RAM is faulty. I tried in in another system which also supports basicly pc2100, pc2700 etc.. and it didn't even recognise it! It just beeped to say no RAM

Any idea? This ram was from Ebuyer. Info is as follows

Ebuyer 1024MB DDR266 PC2100 Extra Value Ram

**184 Pin DDR SDRAM Dimms 184 Pin DDR Dimms are designed for the latest desktops and servers. Each 184 Pin Dimm provides a 64-bit data path, so they can be installed singly in 64-bit systems. To use DDR memory, your system motherboard must have 184-pin DIMM slots and a DDR-enabled chipset. DDR SDRAM (Double Data Rate-Synchronous DRAM) is a type of SDRAM that supports data transfers on both edges of each clock cycle, effectively doubling the memory chip's data throughput.*

Cheers
 
S

Stu

Obviously not right. Im trying to work out if the RAM is faulty. I tried
in in another system which also supports basicly pc2100, pc2700 etc.. and it
didn't even recognise it! It just beeped to say no RAM.

Go into bios and turnoff all options to do fast boot (or whatever). Make
sure RAM test (or similar) is not disabled.

Using only one stick of ram:
Try ram stick 1 in slot 1.
Try ram stick 1 in slot 2.
Try ram stick 2 in slot 1.
Try ram stick 2 in slot 2.

Using both:
Ram stick1 in slot1, ram stick2 in slot2
Ram stick1 in slot2, ram stick2 in slot1

After that have a cup of tea! You should be able to figure out what is
faulty!

Cheers
Stu
 
V

*Vanguard*

"Samir" said in news:[email protected]:
I have a Jetway V266B Motherboard. I added a 1GB Ram
stick to the Mobo on it's own and when I boot up it's
detected as 512MB.

My Motherboard can handle, i think around 2GB RAM.

Thanks,

Samir

Have you tried removing the good old memory stick and just try booting with the new memory stick? Maybe the new stick is DOA.

Be sure to use good anti-static prevention when working on your PC and especially with memory. Otherwise, maybe you zapped your stick.
 
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V

*Vanguard*

"Samir" said in news:[email protected]:
Bit of confusion? I am only using 1 Ram stick lol

I figured the new stick was "added", as per your comment, meaning there was already one installed. I presumed it was a working system before and you upgraded by adding more memory rather than replacing it (with a higher capacity stick).

You sure the mobo can handle memory modules higher than 512 MB. Might not have enough address lines.

Jetway is not a brand that I've heard of before. A Google search, and hunting around a few sites to find a link, go me to http://www.jetway.com.tw/. Sure would be handy if they had a search function to locate products and support. Just about the time I was going to give up, I found the link to their online copy of the manual at ftp://210.201.178.73/manual/V266BR4A.zip. It says it can handle 2 GB of memory and there are only 2 sockets so it should handle 1 GB modules. Whoa. It appears there are 4 sockets, two for 168-pin and two for 184-pin. What did you put in? I only did a quick scan of the manual to see if I noticed anything regarding memory settings or configuration that would cause your problem. Nope, didn't see anything that stood out.

The purple slots are for 184-pin DDR memory modules. I suspect you can only have one bank populated; i.e., you use only the purple DDR slots or you use the black SDRAM slots but you can't have memory in both a purple and a black slot. Did you try using the other purple slot?

I'm really wondering if you got what they said they sold you. You bought and maybe paid the price for a 1024MB module but instead really got only a 512MB module. Go back to their web site and compare the part number listed there to the one one the stick that you got. Even if it matches, you better call them right now to get their techs to verify you got the right size stick or to get an RMA to get a replacement.
 
G

Guest

Im using the purple slots on the mobo. I have sent an RMA request and I will get a Crucial stick instead
 
S

S.Heenan

Samir said:
I think you mean PC2100 :)

Well, PC2100 *is* a few dollars cheaper. However, for $11US, you can have
PC3200 which runs as fast as 200MHz. It will also run at 133MHz in your
Jetway.
512MB - CT6464Z40B DDR PC3200 CL=3 Non-parity US $104.99
 
R

Ron Martell

Samir said:
I have a Jetway V266B Motherboard. I added a 1GB Ram
stick to the Mobo on it's own and when I boot up it's
detected as 512MB.

My Motherboard can handle, i think around 2GB RAM.

Thanks,

Samir

While the motherboard manual does say that it can support up to 2 gb
of RAM the detailed RAM specs on page 10 of the manual only list
module sizes up to 512 mb.

You could try contacting the manufacturer's tech support and see what
they say about 1 gb modules on that motherboard.
http://www.jetway.com.tw/evisn/index.html

Good luck


Ron Martell Duncan B.C. Canada
--
Microsoft MVP
On-Line Help Computer Service
http://onlinehelp.bc.ca

"The reason computer chips are so small is computers don't eat much."
 
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V

*Vanguard*

"Ron Martell" said in news:[email protected]:
While the motherboard manual does say that it can support up to 2 gb
of RAM the detailed RAM specs on page 10 of the manual only list
module sizes up to 512 mb.


Looks like you nailed it. In my 2nd post yesterday, I had asked if the
mobo supported bigger than 512MB modules. I had found and provided the
link to the manual but was then looking for another cause. I missed on
page 10 where it lists in the middle column on the table as to what
memory module sizes are allowed. From page 10:

SDRAM 64, 128, 256, 512MB
SDRAM 64, 128, 256, 512MB
DDR SDRAM 64, 128, 256, 512MB
DDR SDRAM 64, 128, 256, 512MB

512MB is the largest size memory stick that the Jetway V266B mobo will
handle. Ron, you'll have to see if you can return the 1GB stick and get
two 512MB sticks. They might stick you with a restock charge.
 

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