High-Density RAM

[Robert526]

I ask this question though I feel I already know the answer (I searched the forums):

Will high density RAM work with an eMachines 1840? (Intel 845GL Chipset)?

I bought the RAM and it doesn't seem to work properly, though I hope that it may be something I could fix...

Thank you all (Long time no see!)

[sr71000]

what are some more specs on the ram? speeds and such?

[HeadBand]

I am fairly certian there are no intel chipsets that work with high density ram...only certian ones from via and sis

[RamonGTP]

I am fairly certian there are no intel chipsets that work with high density ram...only certian ones from via and sis

That would be false. I've used single sided 512MB sticks as well as double sided 1GB sticks on well over 100 builds using Intel chipsets.

[DanU]

"High density" is an unfortunate misnomer. Both "high density" and "low density" 1GB RAM use (in the strict sense) exactly the same density technology (512Mbits per chip). They are both double sided, using 8 chips per side. The only difference is in how each chip is organized. In so-called high density memory, each chip is organized as 128MbX4b. In standard (ie. low density) memory, each chip is organized as 64Mbx8b.

Headband is correct. Only certain VIA and SIS chipset support high density 1GB memory. Even having the correct chipset is no guarantee. Some manufacturers (Asus is one) will program their mobo to reject high density RAM, even if the chipset supports it.

There is no harm in trying high density memory. Your computer either won't boot, or it will only sense half of the RAM.

[RamonGTP]

In that case, I stand corrected. My appoligies to headband.

[Robert526]

Why does it not work? What makes it so incompatible? And why would Asus design a motherboard to reject something on purpose?

[RamonGTP]

Well if what they're saying is true, and it seems to be, it is not asus that is designing the baord that way. It is the actual chipset that isn't accepting it, so any manufacturer would have that problem with that particualr chipset, not just ASUS.

[Robert526]

Some manufacturers (Asus is one) will program their mobo to reject high density RAM, even if the chipset supports it.

Not according to him. I know most are simply incompatible...

[RamonGTP]

Yes, they also said intel chipsets don't support HD ram regardless, so weather or not the board is setup to reject it, the chipset wouldn't support it anyway. As far as the reason for it, I do not know.

[DanU]

I'm taking my information from various forums. Here's one post:
http://www.planetamd64.com/lofiversi...hp/t14829.html

High density memory is non standard so if Asus doesn't want to support it, you can't blame them.

[dirtfarmer]

i think i got the wrong DDR ram for my compter
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
i got this info from
http://www.crucial.com

Number of Slots:

Slot 1
Slot 2
Slot 3
Each memory slot can hold DDR PC3200,DDR PC2700,DDR PC4000 with a maximum of 1GB per slot.*

*Not to exceed manufacturer supported memory.Currently installed memory:

256 MB

DDR PC2100

512 MB
DDR PC2300
EMPTY


Each memory slot can hold DDR PC3200,DDR PC2700,DDR PC4000 with a maximum of 1GB per slot.*



*Not to exceed manufacturer supported memory.



To see the memory installed in your computer click the Scan My System button below.

Maximum Memory Capacity: 3072MB
Currently Installed Memory: 768 MB
Available Memory Slots: 1
Number of Banks: 3
Dual Channel Support: No
CPU Manufacturer: AuthenticAMD
CPU Family: AMD Duron(tm) Model 7, Stepping 0
CPU Speed: 1000 MHz
Chipset: VIA Apollo KT266A
Error Detection Support: ECC and non-ECC
Supported DRAM Types: DDR SDRAM only
Module Types Supported: Unbuffered and Registered
Max Unbuffered DDR SDRAM: 3072MB
Max Component Density: 512Mb
184-pin DIMM Banking: 3 (3 banks of 1)
Max Registered DDR SDRAM: 3072MB
Graphics Support: AGP 4X
USB Support: 1.x Compliant
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
i purchase on e bay 1GB PC3200 DDR400 PC 3200 PC2700 DDR 1 GB AMD RAM
http://cgi.ebay.ca/ws/eBayISAPI.dll?...3552&rd=1&rd=1

JEDEC Standard 184-pin Dual In-Line Memory Module

100% Backward compatible to PC2700 / PC2100

128x4 DDR Unbuffered 184Pin DIMM
Performance: PC3200
DQ DQ Burst Frequency: 400MHz
Inputs and outputs are SSTL-18 compatible
SDRAM have 4 internal banks for concurrent operation
Differential clock inputs
Data is read or written on both clock edges
Bi-directional data strobe with one clock cycle preamble and one-half clock post-amble
Address and control signals are fully synchronous to positive clock edge
Programmable Operation:
Burst Type: Sequential or Interleave
Burst Length: 4, 8
Operation: Burst Read and Write
Auto Refresh (CBR) and Self Refresh Modes
Automatic and controlled precharge commands
Serial Presence Detect
SDRAMs in FBGA Package
RoHs compliance
SPEED: PC3200 (Backwards Compatible with PC2700, PC2100
Enhanced for AMD Based Systems & Boards

Details


l 184-pin unbuffered DIMM

l Density: HIGH

l Maximum 6.4GB/s bandwidth

l JEDEC standard 1.8 +/-0.1V power supply

l 128x4 component configuration

l CAS Latency 3

l 4 Bank

l Off-chip driver (OCD) impedance adjustment, and on die termination (ODT)


Product Name


1GB DDR400 400MHZ (PC3200) 184 Pin SDRAM MEMORY

Technical Information

Memory Size
1GB DDR 184Pin

Number
1 x 1GB

Memory Speed
400 Mhz

More Information
1024MB x 1


High Density Chip configuration


Non ECC


Non Registered


UnBuffered

CAS LATECY CL3


PCB LAYER :


6 Layer


Non Parity

Physical Characteristics

Form Factor
184-pin DDR





Gold Pin


Green PCB




Warranty
Life Time Manufacturer warranty




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

System Requirements :
1. Your system / Board must be able to use 1GB DDR modules
2. Not an Intel based or has ASUS board or nVidia Chipset on Board

Compatible with ALL OTHER MAJOR boards and Systems with AMD Processors:


These and more:

Microstar
Gigabyte
Abit
DFI
ECS
PCCHIPS
EPOX
Chaintech
Biostar
IBM

Brand New
Compatible

Brand New Compatible


Designed to specifically work with AMD based Motherboards

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it all come down to high density and low density,, i should be use low, but i got high, some thing i did not know any thing about on til to nite

[dirtfarmer]

but i did find some info- not what i want to find out if the ram that im geting will work
but this in stead

http://www.overclock.net/faqs/113885...w-density.html

Info: What is the Difference Between Low Density and High Density RAM?
and this
http://www.kingston.com/tools/umg/default.asp

Ultimate Memory Guide

[fpantovich]

here's a couple of good links to check out in relation to the original posters question. First 2 are probably the best. Good luck

http://www.techsupportforum.com/hard...ty-memory.html

http://www.overclock.net/faqs/113885...w-density.html

http://www.geekstogo.com/forum/index...owtopic=112556

http://forums.anandtech.com/messagev...readid=1999124

[dirtfarmer]

well i made the error of geting high density DDR ram
and what happen was only half of the ram show up on my compter, even after i flash the BIOS witha new update

a 1 GB of ram only show up as 512 MB- even when my compter had a better chance of use the ram then other, as it use a gigabyte MOBO andf an AMD cpu

well a lot that did me any was