ram is not fully recognised

January 4, 2011 at 16:05:18
Specs: Windows XP
Hello,

I have a desktop with motherboard Via KT333CF-8235 ruinign on windows xp. I had a 256MB memory and the computer was running very slow with lots of lags... I decided to buy some more memory and bought the lot of two kit KVR400 X64C3AK2/512(total of 1 GB).

I opened the computer and inserted the two memory sticks on the motherboard and switch on the computer. As it runs BIOS says only 512MB Ram and not 1GB RAM.. Other times it reads sometimes says 256MB and one time said 192MB RAM.

Its very strange this... Whats going on.

The chipset, motherboard website is here:
http://www.via.com.tw/en/products/c...


I dont know but the site says that the board accepts DDR200/266/333 SDRAM. Did I bought a wrong set of memory sticks or is it something wrong in the computer??

Thanks.

Boto


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#1
January 4, 2011 at 16:20:49
VIA makes chipsets, not motherboards. The model number you listed is not the number of the board. You need to determine who the manufacturer is, then you can check to see how much & what type of RAM is supported. Alhough DDR400 isn't officially supported by the KT333, it should be backwards compatible & simply run at DDR333 speed. You need to find the correct make/model of the board.

Here's an example, notice the model info between the PCI slots:

http://www.svethardware.cz/sh/media...

The board is an MSI KT3 Ultra, aka MS-6380E version 1.0.


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#2
January 4, 2011 at 16:39:53
I forgot to say my hardware of my sistem:


PC Wizard 2010 Version 1.961
------------------------------------------------------------------------------------------

Operating System: Microsoft Windows XP Professional 5.01.2600 Service Pack 2

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


<<< Mainboard >>>

> Manufacturer : VIA Technologies, Inc.

>> General Information
Product : KT333CF-8235
Version : Unspecified
Serial Number : Unspecified
Unique ID : FFFFFFFF-FFFFFFFF-FFFFFFFF-FFFFFFFF
SKU : Unspecified
Family : Unspecified
Start mode : Power Switch

>> Chassis Information
Intrusion detected : Unspecified

> Mainboard : Unspecified KT333CF-8235

>> General Information
Manufacturer : Unspecified
Product : KT333CF-8235
Version : Unspecified
Serial Number : Unspecified
Support MP : No

>> Chassis Information
Manufacturer : Unspecified
Type : Desktop
Version : Unspecified
Serial Number : Unspecified
Asset : Unspecified

>> OEM Support
HPET : No
SLIC : No
nVidia SLI Ready : No

>> Sensor Information
Hardware Monitoring : ITE SIS950 / IT8705F

>> On-Board Device Information
Embedded Controller : No

>> Slots Information
Slot PCI : 32-bit [5.0v] - In Use
Slot PCI : 32-bit [5.0v] - Empty
Slot PCI : 32-bit [5.0v] - Empty
Slot PCI : 32-bit [5.0v] - Empty
Slot AGP : 32-bit [5.0v] - Empty

>> External Connectors
Serial 16450 Compatible : DB-9 male
Serial 16450 Compatible : DB-9 male
Parallel ECP/EPP : DB25 female
Keyboard : PS/2
Mouse : PS/2

>> Internal Connectors
PRIMARY IDE : On Board IDE
SECONDARY IDE : On Board IDE
FDD : On Board Floppy
COM1 : 9 Pin Dual Inline (pin 10 cut)
COM2 : 9 Pin Dual Inline (pin 10 cut)
LPT1 : DB25 female
Keyboard : PS/2
PS/2 Mouse : PS/2

> Bios : Phoenix Technologies, LTD

>> General Information
Manufacturer : Phoenix Technologies, LTD
Version : 6.00 PG
Date : 09/22/2003 (mm/dd/yyyy)
Address : 256KB
OEM Signature : K7VTA3 V8.0C 09/22/2003
SMBios Version : Unspecified
DMI Version : 2.2

>> Characteristics
Flashable : Yes
Socketed : Yes

>> Functionality
APM : Yes
ACPI : Yes
ESCD : Yes
PnP : Yes
PCI : Yes
ISA : Yes
AGP : Yes
USB : Yes
PCMCIA : No
Smart Battery : No

>> Boot Information
Selectable Boot : Yes
CD-ROM Boot : Yes
PC Card (PCMCIA) Boot : No
I20 Boot : No
LS-120 Boot : Yes
1394 Boot : No
ATAPI ZIP Boot : Yes

> Chipset : VIA KT400 (VT8377)

>> General Information
NorthBridge : VIA KT400 (VT8377)
SouthBridge : VT8235 PCI to ISA Bridge


> Physical Memory : 512MB DDR-SDRAM

>> General Information
A0 : Empty
A1 (RAS 2) : 256 (Single Bank)
A2 : Empty

>> Information SPD EEPROM (A2)
Manufacturer : Kingston
Part Number : K
Serial Number : 752A14B2
Type : DDR-SDRAM PC-3200 (200MHz) - [DDR-400]
Size : 256MB (1 rows, 4 banks)
Module Buffered : No
Module Registered : No
Module SLi Ready (EPP) : No
Width : 64-bit
Error Correction Capability (ECC) : No
Max. Burst Length : 8
Refresh : Reduced (.5x)7.8 µs, Self Refreshµs
Voltage : SSTL 2.5vv
Prefetch Buffer : 2-bit
Manufacture : Week 42 of 2003
Supported Frequencies : 133MHz, 166MHz, 200MHz
CAS Latency (tCL) : 2 clocks @ 133MHz, 2.5 clocks @ 166MHz, 3 clocks @ 200MHz
RAS to CAS (tRCD) : 2 clocks @ 133MHz, 3 clocks @ 166MHz, 3 clocks @ 200MHz
RAS Precharge (tRP) : 2 clocks @ 133MHz, 3 clocks @ 166MHz, 3 clocks @ 200MHz
Cycle Time (tRAS) : 6 clocks @ 133MHz, 7 clocks @ 166MHz, 8 clocks @ 200MHz

>> Information SPD EEPROM
Manufacturer : Kingston
Part Number : K
Serial Number : 762A98B1
Type : DDR-SDRAM PC-3200 (200MHz) - [DDR-400]
Size : 256MB (1 rows, 4 banks)
Module Buffered : No
Module Registered : No
Module SLi Ready (EPP) : No
Width : 64-bit
Error Correction Capability (ECC) : No
Max. Burst Length : 8
Refresh : Reduced (.5x)7.8 µs, Self Refreshµs
Voltage : SSTL 2.5vv
Prefetch Buffer : 2-bit
Manufacture : Week 42 of 2003
Supported Frequencies : 133MHz, 166MHz, 200MHz
CAS Latency (tCL) : 2 clocks @ 133MHz, 2.5 clocks @ 166MHz, 3 clocks @ 200MHz
RAS to CAS (tRCD) : 2 clocks @ 133MHz, 3 clocks @ 166MHz, 3 clocks @ 200MHz
RAS Precharge (tRP) : 2 clocks @ 133MHz, 3 clocks @ 166MHz, 3 clocks @ 200MHz
Cycle Time (tRAS) : 6 clocks @ 133MHz, 7 clocks @ 166MHz, 8 clocks @ 200MHz

>> Memory Controller Information
Memory Controller : Standard, EDO
Number of connectors : 3
Max. Module Size : 32MB
Max. Memory Size : 96MB
Supported Speed : 70ns, 60ns
Supported Voltages : 5v
Error Detection Method : No
Error Correction Capability : None
Current/Supported Interleave : 4-way/1-way


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#3
January 4, 2011 at 16:46:51
Hold the phone! The model number is listed within all that mess:

K7VTA3 V8.0C

Here's the board info from the ECS website:

http://www.ecs.com.tw/ECSWebSite/Pr...

Notice that it accepts up to 2GB.

Here's what Crucial recommends:

http://www.crucial.com/store/listpa...


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Related Solutions

#4
January 4, 2011 at 17:07:28
Hi again, I run the program everest and it says that i just have 256MB ram??

Why this happens so.. I have two memory sticks of 512MB each and why the system isnt recognizing the total memory 1GB and only 256MB??

Please let me know because i just bought these memory sticks.

boto


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#5
January 4, 2011 at 18:04:46
You bought the wrong ram modules.
512mb and 1gb modules must have 16 chips for your main chipset.
...

Search using: KT333CF-8235

http://www.viaarena.com/forums/arch...

"Sisoft Sandra:

System:
Manufacturer- VIA, Technologies, Inc.
Model- KT333CF-8235

Mainboard:
Model- KT333CF-8235

Chipset 1:
Model- VIA Technologies Inc VT8377 Apollo KT400/A/600 CPU to PCI Bridge"

"AIDA32:

Motherboard Name: ECS K7VTA3 v1
Motherboard Chipset: VIA VT8377 Apollo KT400"
.............

Search Kingston web site with model: K7VTA3

Search Results for: EliteGroup (ECS) K7VTA3 V1.0 Motherboard

3 ram slots

KVR266X64C25/512 512MB 266MHz DDR Non-ECC CL2.5 DIMM
KVR266X64C25/1G 1GB 266MHz DDR Non-ECC CL2.5 DIMM
...

Search Results for: EliteGroup (ECS) K7VTA3 V3.x/V5.0/V7.0/V8.0 Motherboards

3 ram slots

KVR266X64C25/512 512MB 266MHz DDR Non-ECC CL2.5 DIMM
KVR266X64C25/1G 1GB 266MHz DDR Non-ECC CL2.5 DIMM
KVR333X64C25/512 512MB 333MHz DDR Non-ECC CL2.5 DIMM
KVR333X64C25/1G 1GB 333MHz DDR Non-ECC CL2.5 DIMM
...

Search Results for: EliteGroup (ECS) K7VTA3 V6.0 Motherboard

2 ram slots

KVR266X64C25/512 512MB 266MHz DDR Non-ECC CL2.5 DIMM
KVR266X64C25/1G 1GB 266MHz DDR Non-ECC CL2.5 DIMM
KVR333X64C25/512 512MB 333MHz DDR Non-ECC CL2.5 DIMM
KVR333X64C25/1G 1GB 333MHz DDR Non-ECC CL2.5 DIMM
........

You bought:

KVR400X64C3AK2/1G
Description: 1GB 400MHz DDR Non-ECC CL3 (3-3-3) DIMM (Kit of 2)
Detailed Specifications: Standard 64M X 64 Non-ECC 400MHz 184-pin Unbuffered DIMM (DDR, 2.6V, CL3, Gold)

Datasheet - 8 - 64M X 8bit chips on one side
2.6v +/- .1v :
http://www.valueram.com/datasheets/...
........

512mb and 1gb modules must have 16 chips for your main chipset:


KVR266X64C25/512
Description: 512MB 266MHz DDR Non-ECC CL2.5 DIMM
Detailed Specifications: Standard 64M X 64 Non-ECC 266MHz 184-pin Unbuffered DIMM (DDR, 2.5V, CL2.5, Gold)

Datasheet - 16 - 32M X 8bit (8M x 8bit x 4 bank) chips - 8 on each side
2.5v +/- .25v :
http://www.valueram.com/datasheets/...

KVR333X64C25/512
Description: 512MB 333MHz DDR Non-ECC CL2.5 DIMM
Detailed Specifications: Standard 64M X 64 Non-ECC 333MHz 184-pin Unbuffered DIMM (DDR, 2.5V, CL2.5, Gold)
Datasheet - 16 - 32M X 8bit (8M x 8bit x 4 bank) chips - 8 on each side
2.5v +/- .25v :
http://www.valueram.com/datasheets/...

KVR333X64C25/1G
Description: 1GB 333MHz DDR Non-ECC CL2.5 DIMM
Detailed Specifications: Standard 128M X 64 Non-ECC 333MHz 184-pin Unbuffered DIMM (DDR, 2.5V, CL2.5, Gold)

Datasheet - 16 - 64M X 8bit (16M x 8bit x 4 bank) chips - 8 on each side:
http://www.valueram.com/datasheets/...



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#6
January 4, 2011 at 18:43:36
Hi , the motherboard is K7VTA3 v8 and not 1.0... is this a much diference...


I have run the everest program and the program recognized the both memory sticks but only 256MB and not 512MB and the weird thing is that the program only says that 256MB is the actual phisical memory of the system??!!

If these were wrong memory sticks could i still work in my computer with reduced memory as It seems to be in my system now?


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#7
January 4, 2011 at 18:44:53
If i bought a wrong memory then which memory should i buy please. thanks.

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#8
January 4, 2011 at 19:36:00
"the motherboard is K7VTA3 v8 and not 1.0... is this a much diference.."

I listed the ram for all the possible mboard version numbers.
The main chipset is the same one for all of them.

"If i bought a wrong memory then which memory should i buy please."

You can buy any of the specific Kingston ram modules in response 5, except the ones you bought,
or any of the specific Crucial ones pointed to by mickliq in response 3,
or you can look up the ram that will work in your mboard by using the ECS model number on any memory manufacturer's or ram distributor's web site that has a ram configurator or similar that lists your specific mboard model.

If you use a 3rd ram module in the slots, then the voltage specified for that should be the same as for the modules you buy - the bios will set the ram to the lowest voltage spec of all the modules by default.


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#9
January 5, 2011 at 04:32:01
Hi, Do you think is possible to underclock the DDR400 to DDR333 through the bios? Is there any risk to the computer from fire or anything like that if we do this.

In ythe bios there is option CPU: DRAM and theres a lot of options like voltage frequencies, Non-DDR400/DDR400, etc...

If this si possible and not a risk i would like to know how can i undersclok my memories to be working as DDR333 and have a total of 1GB Ram on my system.


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#10
January 5, 2011 at 08:17:39
Your main chipset cannot run the ram any faster than 333mhz. The DDR400 / PC3200 specs themselves are backward compatible, but your problem is the individual chips on the modules you bought have their memory organized on them in such away that the main chipset cannot recognize them properly.
The bios will automatically set the modules to run at 333mhz, if all the modules installed can run at at least 333mhz, or if any module cannot run that fast, the bios run all the modules at the speed of the slowest one.
You may be able to set the ram mhz in the bios to run slower than the bios has them set to by default, but you can't run the modules faster than the main chipset supports.

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