Pleasem help me with RAM installation

HairyDwarf · March 2005

Ok, I got a 512, to replace one of my 256 modules. So I take the 256 out of the first slot, put the 512 in, and start it up. I should have 768 or something. It still says I have 512. I have DDR Dimm if you need to know. Why does it keep saying I still have 512. All of em are clipped in right. Also, On my 256, it has those little black sqaures on both sides, but on the 512, it only has them on one side. Is that something?? Please help

Serien · March 2005

hmm, well the squares both sides doesn't matter

I'm just trying to wonder what could be the problem...

try and switch out the current 256 with the other 256 you took out, see if that does anything

HairyDwarf · March 2005

Well I put the one in thats supposed to be 512, with none else, and it only reads it as 256. Did they put in a 256 instead of a a 512 or something?

HairyDwarf · March 2005

Also, in the booklet, it says Turn on the compu and follow the instructions o9n your compu user manual that describes steps if any neccesary to allow your computer to recongnize the new memory. Whats that?

HairyDwarf · March 2005

Anyone? Could it be they put in a 256 instead of 512? Cause the 512 only reads as 256

Kiamde · March 2005

They screwed up the order if it is just 2 sticks of 256MB. If it is 2 sticks of 512 MB you are fine. If there is 4 sticks of 256 MB you are fine.

HairyDwarf · March 2005

You dont understand. All I ordered was one stick of 512. I currently have 2 slots, each with 256. Im looking to replace one with the 512. When I start the compu, it only reads as 512, not 768. It wont read the one as 512. Only 256

Lamanan · March 2005

While they probably did screw the order up in that event, you might want to check RAM compatibility and exactly how the RAM is being recognised by your system.

HairyDwarf · March 2005

Can someone verify that the ram will work in my system, cause I know it would. And it does, but it only shows 256 of the 512 for some reason. Heres my compu link

http://www.newegg.com/app/ViewProductDesc.asp?description=20-141-173&depa=1

And heres the RAM link

http://www.newegg.com/app/ViewProductDesc.asp?description=20-141-173&depa=1

Its the same Type, DDR, speed 2100, CAS latency 2.5. I dont see why it doesnt see the 512, and reads it only as a 256. Can someone tell me it should work fine of my system though?

Shrubber · March 2005

Send me the link your motherboard. Also, try Windows Memory Dig- http://oca.microsoft.com/en/windiag.asp#top. Then give me a cpu-z log(www.cpu-z.com), not sure how your computer is detecting it.

HairyDwarf · March 2005

Dont know where to find my motherboard.

CPU(s)
Number of CPUs	1

Name	Intel Pentium 4
Code Name	Willamette
Specification	Intel(R) Pentium(R) 4 CPU 1.60GHz
Family / Model / Stepping	F 1 2
Extended Family / Model	0 0
Brand ID	8
Package	mPGA-478
Core Stepping	D0
Technology	0.18 µ
Supported Instructions Sets	MMX, SSE, SSE2
CPU Clock Speed	1594.8 MHz
Clock multiplier	x 16.0
Front Side Bus Frequency	99.7 MHz
Bus Speed	398.7 MHz
L1 Data Cache	8 KBytes, 4-way set associative, 64 Bytes line size
L1 Trace Cache	12 Kµops, 8-way set associative
L2 Cache	256 KBytes, 8-way set associative, 64 Bytes line size
L2 Speed	1594.8 MHz (Full)
L2 Location	On Chip
L2 Data Prefetch Logic	yes
L2 Bus Width	256 bits

Mainboard and chipset
Motherboard manufacturer	Compaq
Motherboard model	0784h,
BIOS vendor	Compaq
BIOS revision	686Y2 v2.06
BIOS release date	12/03/2001
Chipset	Intel i845D rev. 4
Southbridge	Intel 82801BA (ICH2) rev. 5

Graphic Interface	AGP
AGP Status	enabled, rev. 2.0
AGP Data Transfert Rate	4x
AGP Max Rate	4x
AGP Side Band Addressing	supported, enabled
AGP Aperture Size	64 MBytes

Memory
DRAM Type	DDR-SDRAM
DRAM Size	512 MBytes
DRAM Frequency	132.9 MHz
FSB:DRAM	3:4
CAS# Latency	2.5 clocks
RAS# to CAS#	3 clocks
RAS# Precharge	3 clocks
Cycle Time (TRAS)	6 clocks
# of memory modules	2
Module 0	Micron Technology DDR-SDRAM PC2100 - 256 MBytes
Module 1	Micron Technology DDR-SDRAM PC2100 - 256 MBytes

Software
Windows version	Microsoft Windows XP Home Edition Service Pack 2 (Build 2600)
DirectX version	9.0c

Vampir · March 2005

this is all speculation. but i had this problem on my old P3 sony.and it wasnt the right type of ram, in ur case the ram might not have been pc 2100.

but this is even more of speculation, sometimes i have heard some brands of memory dont work with each other. like my friend got a 512 mg PC 3200 corsair ram stick and it wouldnt recognize the other ram. so i think the brands might sometimes have to be compatible.

but i hope u solve ur problem

HairyDwarf · March 2005

But on my compu link, it doesnt specify a specific brand. So I dont even know what brand to get, so I got that cause I thought it doesnt matter. Guess Im gonna have to send it back and get another stick and hope that works. Can someone still confirm that the ram link i gave should work with my pc? Just want to make sure. thx for suggestions

Vampir · March 2005

Originally posted by HairyDwarf

Dont know where to find my motherboard.

CPU(s)

Number of CPUs
1

Name
Intel Pentium 4

Code Name
Willamette

Specification
Intel(R) Pentium(R) 4 CPU 1.60GHz

Family / Model / Stepping
F 1 2

Extended Family / Model
0 0

Brand ID
8

Package
mPGA-478

Core Stepping
D0

Technology
0.18 µ

Supported Instructions Sets
MMX, SSE, SSE2

CPU Clock Speed
1594.8 MHz

Clock multiplier
x 16.0

Front Side Bus Frequency
99.7 MHz

Bus Speed
398.7 MHz

L1 Data Cache
8 KBytes, 4-way set associative, 64 Bytes line size

L1 Trace Cache
12 Kµops, 8-way set associative

L2 Cache
256 KBytes, 8-way set associative, 64 Bytes line size

L2 Speed
1594.8 MHz (Full)

L2 Location
On Chip

L2 Data Prefetch Logic
yes

L2 Bus Width
256 bits

Mainboard and chipset

Motherboard manufacturer
Compaq

Motherboard model
0784h,

BIOS vendor
Compaq

BIOS revision
686Y2 v2.06

BIOS release date
12/03/2001

Chipset
Intel i845D rev. 4

Southbridge
Intel 82801BA (ICH2) rev. 5

Graphic Interface
AGP

AGP Status
enabled, rev. 2.0

AGP Data Transfert Rate
4x

AGP Max Rate
4x

AGP Side Band Addressing
supported, enabled

AGP Aperture Size
64 MBytes

Memory

DRAM Type
DDR-SDRAM

DRAM Size
512 MBytes

DRAM Frequency
132.9 MHz

FSB:DRAM
3:4

CAS# Latency
2.5 clocks

RAS# to CAS#
3 clocks

RAS# Precharge
3 clocks

Cycle Time (TRAS)
6 clocks

# of memory modules
2

Module 0
Micron Technology DDR-SDRAM PC2100 - 256 MBytes

Module 1
Micron Technology DDR-SDRAM PC2100 - 256 MBytes

Software

Windows version
Microsoft Windows XP Home Edition Service Pack 2 (Build 2600)

DirectX version
9.0c

Look at the part that says L2 catche, it might mean it only recognizes 256mgs per ram slot. but thats just a guess.

Shrubber · March 2005

Nope L2 Cache is CPU Memory and has nothing to do with RAM. I would go and ask compaq/HP what ram your PC uses/motherboard model(they have a forum board). Mixing and matching ram is really a risky business. One thing, if you want to go matching again. I would advice that you get ram with the same latencys 2.5,3,3,6 PC 2100 ram. If not, I did read the compaq pcs are using the old versions of PC2100 that are made different then the newer ones, but it was only forum sepulation.

One question- do you have a 512 stick and a 256 stick?, beacuse CPU-Z is showing that "# of memory modules 2", so your computer might know it there.

Good luck either way

::::20::

Shrubber · March 2005

double

Thoom · March 2005

Your computer is old. Your bios/motherboard might not support more than 512megs period. Try talking to Hp about your compaq, and see whats compatible. See if you can upgrade your Bios.

Also your memory is made by Micron says it in your comp info, try talking to a rep there

I wish you luck

HairyDwarf · March 2005

I have 256 stick in 2 slots. No 512, cause it didnt work. And I must be able to get 1 gig ''512MB PC2100 DDR DRAM, 2 Total DIMM Slots Upgradeable to 1.0GB (DDR DRAM DIMM required)'' from my spec site.

Katheryne · March 2005

Okay, now I'm confused as all hell. With both your 256 sticks, your system reads 512M. Okay. With one of the 256's replaced with a 512, your system still reads 512.

It sounds to me like a memory incompatibility is causing your new 512 stick to "mute" the other 256 stick. Try one of these fixes:

Swap placement of your sticks (ie move what's in slot 0 to slot 1, what's in slot 1 to slot 0)
Remove the 256 stick, and put your other 256 stick in its place.

If your modules are of different speeds, the slowest one MUST be in slot 0!

Luckily, DDR RAM generally doesn't have the same kind of compatibility issues like PC100-PC133 did; but compatibility issues can and do still crop up.

On the plus side: Your new 512M stick does work!

HairyDwarf · March 2005

Already tried both solutions. Also tried it on a friends computer. Put the 512 in alone, and still reads only 256. Its gotta be packaged wrong or shot or something. They are same speeds so thats not the problem. Any other suggestions, or should I send it back?

Also, when I put the 512 in alone, it reads it as 256. So it cant be muting the others out.

Kiamde · March 2005

Originally posted by HairyDwarf
Already tried both solutions. Also tried it on a friends computer. Put the 512 in alone, and still reads only 256. Its gotta be packaged wrong or shot or something. They are same speeds so thats not the problem. Any other suggestions, or should I send it back?

If it was newegg, call them up and ask for a refund or a resending. They will express it for no extra charge. You will need to send the otehr stick back, though.

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