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Need advice on upgrading ram...and compatibility


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#1
Japstar

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Hey

So Im upgrading my ram on my desktop computer and wanted your advice if the memory im considering to buy is compatible.

Using CPUID,I found out my current specs:

Motherboard: Micro-Star International Co. LTD.
Model No.:MS-6577
Intel chipset: i845G rev. B1
Number of memory slots: 2

Current memory installed -
2 modules of 256MB PC2100 DDR SDRAM memory (specifications are in Attachment):
(Note dat on the sticker on the memory sticks, it said 266MHz, not 133MHz??)
memory_specs_2.JPG
memory_specs_1.JPG

This is the memory im considering to buy:

Its on ebay and this is the link: 512mb memory

Ill paste the info here also just in case the link doesnt work:

512MB PC2100 400MHZ DDR 266FSB LOW DENSITY
CERTIFIED MEMORY
Brand NEW Product
Dual Channel Ready
Product Details:
• 184-pin unbuffered DIMM
• Density: Low
• PC2100 266FSB
• 2.5 Volts
• 6 Layer unbuffered
• CAS Latency 3 (the current one i have is 2.5 i think)
• 4 Bank
• Off-chip driver (OCD) impedance adjustment, and on die termination (ODT)
Technical Information:
Memory Size: DDR 184 Pin
Number: 512MB
Memory Speed: 266Mhz
Non ECC
Non Registered
UnBuffered
6 Layer
Non Parity

Physical Characteristics:
Form Factor: 184-pin DDR, Gold Pin, Green PCB
Warranty: Life Time Manufacturer warranty

Performance: PC2100
Dual Channel ready

2.5 Volts

DQ DQ Burst Frequency: 266MHz
Inputs and outputs are SSTL-18 compatible
CAS latency 3.0

128x4 X 2 LOW DENSITY DDR SDRAM CHIP CONFIGURATION
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

So any advice is appreciated...as well any cons u can see from the specs.

If you need any more info about my comp, ill be happy to provide.

Thanks in Advance

Japster
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#2
Broni

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One comment from me. I'd never buy RAM from eBay.
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#3
Digerati

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One comment from me. I'd never buy RAM from eBay.

I would not do that either. The exception may be for rare RAM types (like 1066 RDRAM) and you have exhausted all other resources. But still, you take your chances.

These popular RAM makers have auto-scanning and/or manual entry RAM wizards to help you determine which RAM is compatible with your motherboard. For manual entry, enter/select the PC or motherboard make and model number and the wizard will list compatible RAM.

Crucial - Memory Advisor
Corsair - Memory Configurator (manual data entry only)
GeIL - Memory Configurator (manual data entry only)
Kingston - Memory Search (manual data entry only)
Mushkin - Advisor
OCZ - Memory Configurator (manual data entry only)
Patriot - Memory Search (manual data entry only)
PNY - Memory Configurator (manual data entry only)
SuperTalent - Memory Finder (manual data entry only)

The following retailers have auto-scanners and manual wizards. They sell brand name and/or "house" brand (re-branded) RAM.

Newegg - Memory Configurator System Tool
MemoryStock - Upgrade Configurator
18004Memory? - Configurator


Note dat on the sticker on the memory sticks, it said 266MHz, not 133MHz??)

DDR stands for double-duty rate. DDR RAM transfers data on both halves of the clock cycle. Therefore 133MHz x 2 = 266MHz.
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#4
Japstar

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So will this memory work in my comp?

BTW thanks for the advice in terms of ebay...
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#5
Digerati

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It should but it looks like your board will support DDR333 (PC2700) and since DDR400 (PC3200) is backwards compatible - you should be able to use it too - perhaps at a better price.
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#6
Japstar

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one thing i noticed was that my current CAS Latency is 2.5, but this one is 3.0....is this okay to be like this?
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#7
Digerati

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It should not be a problem - but you never know with RAM. You can have two identical stick not play well together.
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