DDR2 SDRAM or DDR2 is an evolution of the old standard DDR SDRAM. The new technology came with the promise of increased performance, lower power consumption and heat, increase the density and minimize electromagnetic interference (noise). Modules are expected to 4GB of memory.

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Will the SuperMicro X7DCA-L take Fully Buffered memory?

I have a lot of Fully Buffered DDR2 memory http://www.hynix.com/datasheet/spd/HYMP351F72AMP4N3_SPD.pdf My question is, would it work on SuperMicro X7DCA-L motherboard or do I have to purchase ...
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491 views

Is it alright to use 2 different DDR2 RAM modules? [duplicate]

I have an old desktop PC which has a P4M900T-M2 motherboard. It currently has one Apacer DDR2-667 memory module but the motherboard can support two DDR2 memory modules. I'm planning to upgrade it to ...
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DDR2 DIMM only works if alone in channel

I'm trying to use 4 DDR2-800 DIMMs together: 2*1GB 5-5-5-15 1.9V and 2*2GB 5-4-4-15 2.1V. Either set works fine by itself at 5-5-5-15 at either 1.9V or 2.1V, but combining the sets doesn't work. I've ...
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Can my system manage 8GB of RAM?

Here is my system configuration: Motherboard: Asrock G31M-VS Processor: Dual Core 2.5GHZ RAM: 1GB DDR2 667MHZ Now I am trying to upgrade my memory. I checked crucial.com and found that my ...
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117 views

Compatibility of DDR2 RAM types

I want to upgrade my pc's memory and crucial.com tells me that the compatible types are: Memory Type: DDR2 PC2-8500, DDR2 PC2-6400, DDR2 PC2-5300, DDR2 (non-ECC) Maximum Memory: 8GB Does the speed ...
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117 views

DDR2-667 compatability in conjunction with DDR2-800

I have a DDR2-800 RAM in one of the slots of 2. Here it shows DDR-800 only as upgradable in the other slot. Would DDR2-667 work in the other slot? Or will it be incompatible?
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120 views

How do calculate which RAM option would be faster?

I've been reading DDR and related info on wikipedia but am still not sure I know anything. I have a Fujitsu Celsius w340 workstation with the following: Memory Speed: 533 MHz Memory Specification ...
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585 views

Can I buy DDR3 RAM to my laptop? [closed]

I have a HP Pavilion dv5 1080eh laptop http://h10025.www1.hp.com/ewfrf/wc/product?cc=us&destPage=product&lc=en&product=3767387&tmp_docname= I have 2GB DDR2 RAM in it. I want to ...
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339 views

RAM memory : is memory speed (Mhz) limited by the fronside bus speed?

I would like to increase memory for my old dell inspiron 6000 and put it to the max, 2 x 1 Gb.From the specs review on cnet.com I see that I have : DDR2 SDRAM SODIMM 200 pin PC2-3200 / 400 Mhz On ...
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How do I determine which type of RAM my laptop uses?

I have a HP Compaq Presario CQ56-103ST laptop and I want to learn whether it uses DDR2 or DDR3 RAM. In its official web page, it is said that it has 3 GB DDR2 (1 x 1024 MB + 1 x 2048 MB). (Obviously ...
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108 views

DDR2 RAM Buffer

I'm trying to figure out what a buffer is in RAM, I'm currently learning about RAM and the different types. Could someone please explain to me the importance and purpose of a buffer in say DDR2 memory ...
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1answer
444 views

Can I upgrade an Asus M51Sn laptop to 2x4GB of RAM? (DDR2)

My Asus M51Sn has 2 RAM slots which currently have 1x1GB + 1x2GB DDR2-800 SODimm RAM modules installed. I've found out that 4GB DDR2 SODimm modules do exist, though they are impossible to find in ...
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2answers
374 views

What kind of RAM is compatible with my system? [closed]

I want to upgrade my RAM but am not sure if I should/can get DDR2 or DDR3. Sound like a stupid question, but CPU-Z is showing the following: At the top, it is saying that it’s DDR3 RAM, but I have ...
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2answers
423 views

memory DIMMs work individually, but not in pairs

I have four new (to me) sticks of Kingston 1Gb 400Mhz DDR2. Three of them boot fine individually in slots 1 or 3, but not in slots 2 or 4. The fourth does not boot in any slot. The three working ones ...
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2answers
153 views

Maximum memory for Dell 540S using 64 bit OS

I went to the Corsair web site and keyed in "Dell Studion Slimline 540S", and it responded with maximum memory = 4slots x 2GB = 8GB DDR2. The OS I am using is 64 bit Vista Home Premium and 64 bit ...
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1answer
114 views

Intel server board support 2 types of RAM sticks - is it possible?

While trying to figure out what to do with an old Intel server I have. On the Intel site spec page for the server board: SR1435VP2 it is mentioned that it can support both DDR and DDR2 400. I ask: ...
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137 views

New RAM sticks don't work with old ones

I bought and placed an additional 2GB of RAM in my notebook. I went to the setup screen, and appears there, I added the memory (2GB + 2GB = 4GB). When I continued to boot the notebook, the screen ...
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234 views

Difference in RAM speed (533MHz vs. 667) for an older iMac

I have an iMac (late 2006 Core 2 Duo model) that originally came with two 512MB DDR2 533MHz for a total of 1 Gig. About 2 years ago, I replaced one of them with a 2GB DDR2 800MHz. Now, I have recently ...
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2answers
2k views

Memory timings in CPU-Z : Memory and SPD tab discrepancy - What do they mean?

When I run CPU-Z in my netbook, in the memory tab, the timings displayed are 5-5-5-15, but in the SPD tab, the timings are 5-5-5-18 (JEDEC #3). What do the differences in the timings between the tabs ...
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1answer
183 views

Switching RAM modules fixes boot hiccups. Why?

I have a rather old motherboard with 4 DDR2 slots, all occupied. I bought the board, RAM modules, and CPU from an acquaintance, second hand, so I do not know the exact history of the problem. The ...
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1answer
1k views

DDR2 woes on HP DC7800

My desktop (HP dc7800) has two 1GB DDR3 modules in it, and slot for 2 more. I tried to add (working) 2x1GB sticks of DDR2, 667, PC5300U. But got angry beeps and no boot. Any ideas? Current memory: ...
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3answers
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What can I do with a bunch of old 1GB/512MB DDR2 RAM sticks?

I've been a parts-hoarder for too long, and buy stuff when I shouldn't. As a result, I have a whole bunch of relatively small denominations of RAM lying around. I've got like 10 or 12 SO-DIMM laptop ...
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342 views

How to select right ram module for MB Asrock Wolfdale 1333-D667

Detailed Here is my system specs. (For motherboard details, click here) I want to upgrade my systems memory. As you see on item specs page, this mainboard supports non-ECC, un-buffered memory. ...
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2answers
775 views

Can somebody explain this mystery of why these memory pinouts don't match?

I'm looking at a stick of DDR2 RAM side-by-side with another labeled PC2-5300F. The notch on the latter looks like DDR, not DDR2. The workstation it came out of says DDR2 in the specs. Wikipedia says ...
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2answers
1k views

Will DDR2 667 & DDR2 533 work together in Intel D946GZIS?

My motherboard is Intel D946GZIS. It supports up to 4 GB RAM. I'm having a 1 GB DDR2 533 MHz RAM in it now. I want to add 2 GB RAM to it. But DDR2 533 MHz RAM is not available in nearby retail stores. ...
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PC with 2 RAMs of different frequencies (1GB 533MHz + 2GB 667MHz) showing only 2GB RAM

I have 6 years old PC with 1.25GB (1GB + 256MB) of DDR2 533MHz RAM. As computer has become very slow and memory usage reaching its limits most of the times, i decided to upgrade RAM. But ...
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1answer
64 views

Memory upgrade scan tool not correct?

I have an older computer I've been fixing up to use as a small server and i'm in the process of upgrading the RAM. (It only has 1GB.) It's a Dell Dimension 9100. Uses PC2-5300 DDR2. It had windows ...
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481 views

Adding DDR2 1066MHz to DDR2 800MHz memory

My Current system has 2x1GB DDR2 800MHz memory, installed on Intel DG965WH board which supports up to 1066MHz. I would like to add some memory and my question is what would be the best configuration ...
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503 views

Who to believe when seeking memory upgrades? - K9N6SGM-v

This question is similar to the following: But asking the broad question of who to believe when seeking memory upgrades? What will happen if I install more RAM than specified in manual? What happens ...
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1answer
831 views

Windows 7 Ultimate, death blue screen with new kingston memory

My system operations (Windows 7 Ultimate), was working perfectly with 1x2G (RAM DDR2) by months, but I bought new 4GB (2x2GB RAM DDR2) by kingston. Retired my old memory 2gb and install the new ...
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292 views

If One DDR2 RAM Modules of a Pair Goes Bad, Should I Replace the Pair?

I have a self-built box with Gigabyte mobo that has 4 slots and accepts a max of 8Gb. About 4 months ago, I added a pair of 2Gb DDR2 memory modules, and last week, one of the pair now fails boot-time ...
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4k views

Installing 3 DDR2 sticks - which of the 4 slots to populate?

First of all, I have the Asus M4A87D-M PRO motherboard. And I have now two identical Apacer 2GB PC-6400 CL5 800Mhz sticks installed. I am going to buy a Transcend JetRAM 2GB PC2-6400 CL6 800Mhz ...
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1answer
350 views

Is it possible for 533MHz PC4200 DDR2 RAM to work on G33 chipset mobo?

I have two 512 MB RAM sticks that work @ max 533MHz. Now, I want to buy a mainboard based on Intel's G33 chipset, namely the MSI MS-7502 (produced for Medion). While I found the G33 does not support ...
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300 views

Can I mix and match DDR2 with different voltages?

I currently have: Corsair 4GB (2x2GB) DDR2 800MHz/PC2-6400 XMS2 DHX Performance Memory CL4 2.1V Would I be able to add to the system: Corsair 4GB (2x2GB) DDR2 800MHz/PC2-6400 XMS2 Memory Kit ...
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746 views

What are the consequences of installing DDR3 RAM on a motherboard that only supports DDR2 RAM? [duplicate]

Possible Duplicate: Is a DDR3 MB compatible with DDR2 RAM? would ddr2 memory work in a motherboard with ddr3 standard? I just ran into something really weird. My computer has DDR3 RAM. ...
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591 views

Speed and compatibility of 4GB DDR2 sticks on an Asus P5Q-E motherboard

I want to add 8GB of memory (in the form of two 4GB sticks) to a system with an Asus P5Q-E motherboard. According to Asus, the motherboard supports 4 x DIMM, max. 16GB, DDR2 1200/1066/800/667MHz, ...
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204 views

What's the difference between DDR2 and DDR2 SD RAM?

I have a Dell laptop and want to increase its memory. When checking its configuration, the RAM details was shown as DDR2 SD RAM. However some sites also show it as DDR2 RAM. Is there any particular ...
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379 views

Can a 2GB DDR2 stick become a 1GB stick?

I've just purchased a 2GB DDR2 RAM. My machine earlier had a 1GB DDR2 RAM stick. Now I put these two sticks together, and my machine, I think, showed only 2GR of RAM? Why is this so? Will using the ...
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1answer
1k views

would ddr2 memory work in a motherboard with ddr3 standard?

I have a machine built with 4 x Mushkin Enhanced Blackline 2GB 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Desktop Memory Model 991599. I'm thinking of upgrading to an Intel iCore 7 CPU that requires a ...
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333 views

Updating the RAM and HDD for my Dell OptiPlex GX280

I'm looking to upgrade my Dell OptiPlex GX280, but can't figure out what type of DDR2 RAM to get, and I also can't seem to figure out if I am supposed to get an SATA, SATA-II, or SATA-III hard drive? ...
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How does a motherboard with 2 DDR2-RAM slots support 8GB of RAM?

I have an MSI motherboard: K9N6PGM2-V2. This motherboard has 2 DIMMs sockets for DDR2-RAMs. But it's stated in MSI website that it supports up to 8GB RAM Main Memory - Supports Dual Channel ...
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1k views

Can two same single RAM chips start to work in dual channel?

Do i need to buy a dual-channel memory kit in order to use Dual Channel? If I have a single 2GB chip and a mainboard which supports Dual Channel, can I expect to have dual channel enabled if I buy ...
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2answers
1k views

How does the number of sticks of RAM influence speed, for the same total amount of RAM? [duplicate]

Which will run faster: four 1GB sticks of DDR2 RAM, or two 2GB sticks? Will they run at the same speed? I'm just curious since they are sold in both sizes, and I have four slots, but only two sticks ...
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7k views

What's faster? A Single channel DDR3 or a dual channel DDR2?

I wonder if Dual Channel DDR2 is faster than Single Channel DDR3 or that DDR3 is so much faster that the Dual Channel doesn't matter.
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506 views

Sound distorted after upgrading RAM

I upgraded RAM on my old Asus M2N-E SLI today and sound does this hiccuping, sometimes distorted sound when I run some video or game. Old RAMs were 3x 1GB DDR2 memory stick at 667MHz (non identical ...
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171 views

Is is possible to put my MBP’s old DDR3 RAM into my GF’s DDR2 MacBook?

I have 4GB of 1067MHz DDR3 RAM, upgrading to 8GB, in my late-2008 Apple MacBook Pro. Crucial’s scanner says my girlfriend’s slightly older MacBook can support 4GB of 500-something-MHz DDR2 RAM (she ...
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871 views

Making the most of dual channel DDR2: how do I arrange the sticks?

I've searched online, but I can't find anything definitive that will put me at ease. I turn to superuser. This is how I have the RAM sticks arranged now: To make the most of the RAM and the dual ...
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2answers
655 views

Server works with either ECC or non-ECC ram but not both (manual requires unbuffered)?

I have a server that came with two sticks of 2GB PC2-6400 ECC ram (Hyundai). We also bought two sticks of Corsair CM2x2048-6400C5C (PC2-6400). So I installed all 4 sticks and the machine started ...
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2k views

Is PC4200 DDR2 compatible with PC3200 DDR?

I picked up some DDR2 5300 that was on sale, and found that it would not physically fit on my motherboard. Now I've found some PC2 4200 RAM on the internet for the price I want. My motherboard takes ...
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273 views

dearth of 4GB DDR2 800 memory modules: performance disadvantage?

I notice there are very few single 4GB DDR2800 chips available vs. 4GB in 2x2GB format. Why is this? I want to go up from 8GB on my LGA775 system to increase memory available on my virtual machines: ...