INTEL DG965OT - 4GB ram not working

[raoubaid]

I have an intel DG965ot with Core 2 Duo E6700 Running on it with 3 GB ram .

I tried upgrading my ram to 4 GB but i couldn't , ram was detected but pc was working soo slow.

I tried many combinations like :

-2x 1GB PC2-5300 (333 MHz) on slots of same color with 1x 2GB PC2-6400 (400 MHz) on one of the remaining slots .

-2x 1GB PC2-5300 (333 MHz) on slots of same color with 2x 1GB PC2-6400 (400 MHz) on other same color slots .

And many others that i dont remember right now .

Please suggest me any way that i can upgrade it to 4GB , my mobo supports upto 8GB but i cant understand why my pc works soo slow on 4GB

Now my pc runs on following configuration


DIMM # 1
SMBus address 0x50
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Hyundai Electronics (AD00000000000000)
Size 1024 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number HYMP112U64CP8-S6
Serial number 00002019
Manufacturing date Week 41/Year 08
Number of banks 1
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts


DIMM # 2
SMBus address 0x51
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Hyundai Electronics (AD00000000000000)
Size 1024 MBytes
Max bandwidth PC2-5300 (333 MHz)
Part number HYMP112U64CP8-Y5
Serial number 00005013
Manufacturing date Week 06/Year 08
Number of banks 1
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts


DIMM # 3
SMBus address 0x53
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Corsair (7F7F9E0000000000)
Size 1024 MBytes
Max bandwidth PC2-5300 (333 MHz)
Part number VS1GB667D2
Serial number 070FBD29
Manufacturing date Week 24/Year 07
Number of banks 2
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts

Copied from CPU-Z

 

[maikutech]

You need to read what intel has to say here:
http://www.intel.com/content/www/us/en/support/boards-and-kits/desktop-boards/000007335.html
https://www.newegg.com/Product/Product.aspx?Item=9SIA19P3VM5452

Thats the highest speed your intel motherboard can handle as specified by intel technicians.
If you want to use the lga 775 boards atleast get a better and more stable motherboard.
https://www.amazon.com/ASRock-G41C-GS-DDR2-Micro-Motherboard/dp/B003BFNYK4/ref=sr_1_1?s=pc&ie=UTF8&qid=1493052170&sr=1-1&keywords=lga+775+motherboard&refinements=p_n_feature_four_browse-bin%3A2057458011%2Cp_n_feature_six_browse-bin%3A2057507011