Question about PC Chips (M925G) Motherboard

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ECS M925 1.0 sdramm to ddr memory

My motherboard is ECS M925 1.0 that supports
both SDRAM and DDR memory. It has two memory banks for each type. I know that you cannot use the two
types of memory simultaneously. What kind of ddr memory will I use that is compatible to my motherboard? How can I change my memory from sdram to ddr?

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Re: ECS M925 1.0 sdramm to ddr memory

DDR Sdram at 200Megahertz or 266MHz. Low density, Non-ECC, 184-pin.

In-between the SDR Sdram ram memory slots, (Outside of motherboard), and the DDR Sdram ram memory slots, (Inside of motherboard next to Processor), is a Junction Panel.

It is JP1, and has two pins.

These are two be OPEN, when using DDR Sdram. NO jumper cap is installed. (Jumper cap used for SDR Sdram)

On the outside edge of the motherboard, that is on the same side as the SDR Sdram ram memory slots, there is a series of jumper pins.
J3D, J3C, J3B, J3A, J2D, J2C, J2B, J2A.
They are all to be SHORTED when using DDR Sdram ram memory.

DDR1, DDR2: Short all J2A/B/C/D and J3A/B/C/D pins.

Doesn't mean you can use DDR2 Sdram.
The two DDR Sdram slots are marked DDR1 and DDR2.
[The two SDR Sdram slots are marked DIMM1 and DIMM2 ]

Motherboard will support Intel Pentium 4 processors, that use a Socket 478 processor socket, and have either a 400MegaHertz Front Side Bus, or a 533MHz FSB.

There is also a jumper block (Panel) to set for the CPU Clock Frequency.
(CPU = Central Processing Unit. Another term used is Microprocessor, or simply Processor for short )

It is JP1A1, and JP1B1. Two 3-pin blocks together.

CPU Clock is 100MegaHertz?
Put a jumper cap on pins 1 and 2 of JP1A1, and pins 2 and 3 of JP1B1.

CPU Clock is 133MHz?
Put a jumper cap on pins 2 and 3 of JP1A1, and pins 1 and 2 of JP1B1.

Intel processors are 'Quad-Pumped'. Means a 100MHz internal clock is 'pumped' up to 400MHz.
A 133MHz internal clock is pumped up to 533MHz.

SDR Sdram is 'single data rate.
DDR Sdram is 'double data rate'.
Means 100MHz DDR Sdram is actually 200MHz.
133MHz DDR Sdram is actually 266MHz ]

[ECS made the mobo for PC Chips ]


(Just saw this, needed proper solution)

Posted on Aug 26, 2012

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Re: ECS M925 1.0 sdramm to ddr memory

The normal DDR Ram is supported..It doesn't support DDR2..

Posted on Nov 03, 2007

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Re: ECS M925 1.0 sdramm to ddr memory


Posted on Nov 12, 2008

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Crashes from DDR 1 ram over 2 gigs and all usb devices.

Hello from here you can download a manual:

It supports:

Dual channel DDR memory architecture
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One of the ram modules could have a defect
Try insert one at the time.
You must have a windows 64 bit system to use more than 3 Gb
Try to update the mainboard drivers
The one for the chipset
The ram slots probably not take modules bigger than 1 Gb
There is too types of ram Ecc and non Ecc.
Ecc ram does not work on this mainboard.

Good luck

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The next link is Kingstons site;

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I wish to add RAM in the PC. Mine motherboard-Epox-EP-4BDA533(I). ID(identification)-05/09/2003-i845d-6A69VPA8C-00. On it costs RAM 256Mb -DDR PC2100 266Mg FSB-400Mg. How many Mb it is possible to add....

Manufacturer Specifications - EPoX EP-4BDA533I Number of Slots:
Slot 1
Slot 2
Each memory slot can hold DDR PC2700,DDR PC3200 with a maximum of 1GB per slot.*
*Not to exceed manufacturer supported memory.
  • 184-pin DIMM Banking: 2 (2 banks of 1)
  • Chipset: Intel 845D
  • Error Detection Support: ECC and non-ECC
  • Graphics Support: AGP 4X
  • Max Component Density: 512Mb
  • Max Unbuffered DDR SDRAM: 2048MB
  • Module Types Supported: Unbuffered only
  • Supported DRAM Types: DDR SDRAM only
  • USB Support: 1.x Compliant
Q: What memory goes into my computer, and will a faster speed be backward-compatible?
A: DDR memory with support for DDR PC2700,DDR PC3200 speeds.
Because DDR memory is backward-compatible, you can safely upgrade your system with any of the guaranteed-compatible DDR speeds listed below, even if your manual calls for PC1600 or PC2100 speeds.
Q: How much memory can my computer handle?
A: 2048MB.
Adding the maximum amount of memory will improve performance and help extend the useful life of your system as you run increasingly demanding software applications in the future.
Q: Do I have to install matching pairs?
A: No.
No, you can install modules one at a time, and you can mix different densities of modules in your computer. But if your computer supports dual-channel memory configurations, you should install in identical pairs (preferably in kits) for optimal performance.
Q: Does my computer support dual-channel memory?
A: No.
Your system does not support dual channel.
Q: Does my computer support ECC memory?
A: Yes.
Your system supports ECC. You can put non-ECC modules into an ECC system, but be sure not to mix ECC and non-ECC modules within a system. Install the same type of modules that are already in your system.

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