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Need help on RAM

S

swapna

Junior Member
Hey,
I recently upgraded my system with kingston pc2700 ddr sodimm...for notebook.
I had 2x128 ram's earlier...so i removed one and placed the new 512 ram.
But after many number of restarts...it is detecting only 588784k which is (512+64).


Can any one tell me why this has happened...and how to correct it...

 
Hi swapna and Welcome to the forums!

Any chance you've integrated graphics with 64MB of dedicated ram?

Fern
 
Originally posted by: swapna
no i dont have any graphics...for 64mb ram....
@ fern thanks for welcoming.
Click to expand...

Not knowing the spec's of your system, I'm guessing here.

But to explain more fully: most lappies have an integrated gfx chip built-on to the motherboard. This chip will use some system memory/ram for video purpose exclusively. I.e., this ram will be dedicated to use for gfx and therefore will not show up (looks like it's missing).

If you have a new fancy lappie with a (vga) daughter-board it will have it's own video ram and will not use system ram.

But, most likely the ram appears to be missing because it's in use by the gfx system of your lappie and not available for general use. THis is case in about 99% of these type-posts.

Tell what your lappie is and we can find out or someone already will know 😉

Most likely everything is fine. The only other option is that if it is double-side ram, one side is failing. Kinda of rare though

Fern
 
I am having a compaq presario 2500 series lappie.I dont have that much techie knowledge abt the motherboard...If anybody know abt this kinda lappie...then it will b gr8.

thanks for ur help fern....


 
Well, I tried a quick google search for you, but that was fruitless.

Downlaod and install one the free programs below that will identify your system's components. It should tell you the answer. Everest is prolly the best. But any should do fine

Get Sissoft Sandra HERE

Belarc HERE

Everest Home Edition HERE

If you have probs interpreting the results, post back. You're looking to have it report gfx as something with 64MB of ram. That would explain the "missing" 64MB you report

Fern
 
Hey Fern,
Below is the summary of my computer.If u need more info lemme know....

Summary

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


Computer:
Computer Name PAVANSUREY
DirectX 4.09.00.0904 (DirectX 9.0c)
Operating System Microsoft Windows XP Home Edition
OS Service Pack Service Pack 2
User Name xxxxxxxxxx

Motherboard:
BIOS Type Phoenix (12/05/03)
Communication Port ECP Printer Port (LPT1)
CPU Type Intel Pentium 4, 2400 MHz (18 x 133)
Motherboard Chipset ATI Mobility Radeon 7000 IGP
Motherboard Name Hewlett-Packard Presario 2500 (DC944AV)
System Memory 576 MB (DDR SDRAM)

Display:
Video Adapter RADEON IGP 345M (64 MB)
Video Adapter RADEON IGP 345M (64 MB)
3D Accelerator ATI Mobility Radeon 7000 IGP (RS250M)
Monitor Digital Flat Panel (1024x768)

Multimedia:
Audio Adapter ULi/ALi M5451 AC-Link Controller Audio Device

Storage:
IDE Controller ALi M5229 PCI Bus Master IDE Controller
Disk Drive FUJITSU MHS2040AT D (40 GB, 4200 RPM, Ultra-ATA/100)
Optical Drive QSI CDRW/DVD SBW-241 (DVD:8x, CD:24x/16x/24x DVD-ROM/CD-RW)
SMART Hard Disks Status OK

Partitions:
C: (NTFS) 38146 MB (15613 MB free)

Input:
Keyboard Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
Mouse HID-compliant mouse
Mouse Synaptics PS/2 Port TouchPad

Network:
Network Adapter Belkin 802.11g Wireless Card
Network Adapter National Semiconductor Corp. DP83815/816 10/100 MacPhyter PCI Adapter
Modem Conexant 56K ACLink Modem

Peripherals:
USB1 Controller VIA VT83C572 PCI-USB Controller
USB1 Controller VIA VT83C572 PCI-USB Controller
USB2 Controller VIA USB 2.0 Enhanced Host Controller
USB Device USB Human Interface Device
Battery Microsoft AC Adapter
Battery Microsoft ACPI-Compliant Control Method Battery
 
look at your video summary.

"Display:
Video Adapter RADEON IGP 345M (64 MB)
Video Adapter RADEON IGP 345M (64 MB)
3D Accelerator ATI Mobility Radeon 7000 IGP (RS250M)
Monitor Digital Flat Panel (1024x768) "

see that? it is taking 64mb from system memory as vidoe memory. you could probably mess around and change the amount of ram used for video memory form the bios.

on startup, when the compaq screen shows. press F1 to get to bios.
 
The Radeon IGP shares the system memory, that's why you are "missing" 64MB.
My sister had the same result when she upgraded to 512MB, she's only at 448MB now.
 
Thanks for the info guys..... But to what amt can i change in the BIOS... is there any minimum limit that the video adapter can have.
 
Well, I assume you don't game on this laptop, in that case the GPU would need very little memory.
I have no idea what would be OK, but 16-32MB would probably be enough. Besides, losing 64MB to the GPU won't affect your performance to much.
 
You can change dedicated video memory in the BIOS most likely. I recommend that if overall system memory is slightly more crucial for the laptop itself, lower the memory dedication for the VGA to 32mb. If you go as low as 16mb, you may get lag with many current OS's even in 2D mode.
 
Thanks guys..i dont game much on this lappie.Ya even without that 64 mb my system performance is good.I only wanted to know why it was detecting less RAM.... So i think i will leave that 64mb for video adapter...as it is.

Once again...thanks for all ur help.
 
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