Mixing memory

Similar Questions

• Equium L20-264: can I mix memory

  Thank you all for the information about upgrading memory on the Equium L20. This I have to have 2 of the same (for example to buy an another 256) where can I buy a 1 GB and while maintaining the current 256. Or do I have to buy two 1 GB.

  Hello

  You must not have two identical RAM module. You can mix. I recommend you put slot A and smaller cotyledon in slot B.

  By the way: compatible memory for your device are
  DDR2 400/533 256 MB (PA3389U - 1 M 25)
  512 MB DDR2-400/533 (PA3412U - 1 M 51)
  1 GB OF DDR2 400/533 (PA3411U-1M1G)

  Good bye

• Sizes of mixed memory in Dell R710 to reach speeds of 1333 mhz and 800 mhz

  We have some Dell R710 which was originally ordered with 48 GB in a configuration of 1333 mhz 12x4Go (RDIMMS). We ordered 6 sticks of memory of 4 GB 1333 mhz additional to complete all 18 banks for a total of 72 GB.  The speed of the memory, then decreased to running at 800 mhz.  We had immediately complaints on the performance in some of our mission critical VM (terminal Server and SQL DBs servers), so we have VMotion their due on a R710 still on the original 12x4Go config clocked at 1333 mhz and complaints went.  I spoke with pre-sales both Dell and after-sales technical support and they confirm that filling all 18 banks decreases speed to 800 mhz, but I get conflicting reports which must be running 12 banks (which is configured as 2 of the 3 banks available in each 6 channels) at 1 066 mhz now which is not. Still, both say that my best option is to return the modules to 4 GB bought recently and also pull the original 12x4Go modules and replace them all by 12x8Go 96GB and should operate at 1333 mhz.  It is really more memory I need and almost three times that I have already budgeted and spent on extra 4 GB of purchase sticks.

  The other option, you said I could do, as well as that of my question is to mix 6x4Go and 6X8Go, up to 72 GB.  I see also that is a configuration of memory available on the Dell Web site during the construction a R710, and he said 1333 mhz as well.  Technical support before and after had these things to say, and it makes me a little nervous because this isn't an absolute 'you'll be fine:

  prior support guy:

  "Everything I read or say confirms that it is perfectly fine to mix the modules in sizes too long as modules within each channel are the same size." I think it can be recommended by most to ensure the consistency of the size but as I said before that we have in our new server system configurations to be cited with mixed sizes what makes me even more confident that is you went this route you would be fine and little or no experience in performance decline. »

  support after guy:

  "Regarding your new question on the use of 6 DIMM 4 GB mixed with 8 GB for a total of 72 GB, which is not an optimum configuration, but I don't think you should really meet a lot of problems with it."  I mentioned before that if you mix speeds, it will downclock fastest at the speed of slow DIMM DIMMS, so certainly would advise against mixing speeds. Regarding the size, the only thing you might encounter as it is booting, you can hear this isn't an optimal configuration, but it should detect any memory and be able to make use of this.  Don't think there is really a performance reached unless you're missing speeds.  «Also, don't forget to reflect your configuration across all channels, if you do not want all of the 4 GB and 8 GB in the same configuration such that put all 8 GB in slots 1/2/3, then put the 4 GB DIMMs in 4/5/6 on both machines slot A and B.»

  So the real question is - if it is not a "optimal" configuration, which makes it means the actual performance of my vSphere servers?  All done and they have problems?

  Thank you

  Ben

  How about using 8x8GB sticks for each host? You'd get to 64 GB each... I'd like to see if Dell will allow you to trade in the memory, you do not have to purchase new memory inside the host... Or look for another provider of memory which will provide you with the correct memory at a better price.

  Network administrator

  VMware VCP4

  Review the allocation of points for "useful" or "right" answers.

• Mixed memory in HP DL385 G6

  I just got in a new HP DL385 G6 to add to my cluster (and ease my transition to vSphere). I bought it with 8 GB x 4 modules corresponds to the memory of our existing hosts, and allow it to be upgraded to a maximum of 128 GB.

  I also have a bunch of 2 GB of memory (brand HP, same speed / type as the memory of 8 GB) which would be wise to fill some of the empty slots up to what order us in addition to the 8 GB sticks.

  Someone had some performance issues with mixture of modules of different size memory (all modules are of the same manafacturer and speed)? I have two nodes of memory processor balanced in exactly the same configuration (8,8,2,2,2,2, E, E) where E = empty.

  We mix 4 GB and 2 GB DIMMS in our G6 servers with no problems, as long as they are paired.

• Mixing memory on the G510

  Hello

  I've seen this technique shows the following:

  MEMORY
  Up to 16GB DDR3 - 1600 MHz, 2 SODIMM slots
  (1 x 2 GB / 2 GB/1 x 4GB 2 x / 1 x 2 GB + 1 x 4GB / 2 GB/1 x 8 4 x / 2 x 8 GB)

  I wanted to know if it supports 1 x 4 GB + 1 x 8 GB

  Thank you

  Yoav

  Hi Yoavain,

  I hope that your question has been answered. Please do not hesitate to post in the community of Lenovo Forums, if you have any additional questions!

  See you soon!

  Shiva Kumar

• How to install and configure mixed memory in PowerEdge R610

  Hello members,

  I had the following situation:

  • DIMM_A1: 2GB 2Rx8 RDIMMS
  • DIMM_A2: 2GB 2Rx8 RDIMMS
  • DIMM_A3: 2GB 2Rx8 RDIMMS
  • DIMM_A4: 2GB 2Rx8 RDIMMS
  • DIMM_A5: (empty)
  • DIMM_A6: (empty)
  • DIMM_B1: 2GB 2Rx8 RDIMMS
  • DIMM_B2: 2GB 2Rx8 RDIMMS
  • DIMM_B3: 2GB 2Rx8 RDIMMS
  • DIMM_B4: 2GB 2Rx8 RDIMMS
  • DIMM_B5: (empty)
  • DIMM_B6: (empty)

  Total, I installed 16GB and I'll add a memory of 16 GB RDIMMS, how do I use the maximum RAM?

  Thank you very much!!

  You are welcome. Reach out to us any time.

• Quad HP Envy 15 t-j100 more: what memory do I have?

  Sorry I'm asking so many questions in this forum. I just ordered 2 X 8 GB memory sticks of Crucial cards... since I can't find the exact specifications of my laptop, and I should ask this question before I bought it. I read that you should not 'mix' memory cards and I'm assuming that my laptop has 1x4Go, 1 x 8 GB, 12 GB of memory. So when I go in there I'll see this 8 GB memory card. My question is would I could use that same with the crucial memory card memory card? Now I have can an extra memory card I use it on another laptop?

  Because you filed your application in the office forum, I move it.

  There are 9 different variants of the j100, example "laptop HP ENVY 15-j100ni'.» Note the nor

  When you declare a model, it is imperative to completely define the model. Maybe you will be better served when fill you in the blanks.

• Issue of compatibility of memory for a Satellite 2450-201 s

  I bought 512meg of Crucial PC2700 for my laptop. It came with 256meg PC2100. It is better to have just the superior assigned memory in it, or should I keep the bars of memory in it?

  Thank you!

  Hello

  It s better not to mix memory modules. In particular, if you have two different manufacturers and two different schedules. Not good.
  It is better to have two memory similar modules, due to compatibility issues.

  Welcome them

• a problem with an installation of memory

  Hello

  I have trouble to install memory in addition to my currnt one card.

  When I use the old one only it workes very well. When I use both my cmputer won't turn on. Instead, I hear 5 sound "beep". It lights when I use my new single memory as well.

  I want to know what I'm doing wrong and what I should look for in a memory if mine does not fit my computer.

  I use:

  Win7 starter

  computer pentium 4 32-bit.

  the memory I have installed on my computer is:

  DDR2
  512 MB
  PC-2 4300 (266 Mhz)

  the new memory I bought is:
  Kingston 512 MB DDR2 533 mhz pc2-4300 NON ECC Unbuffered Desktop PC RAM memory

  My motherboard model:
  HP-09f0h
  Since its an old computer, I have not found an answer to my problom.

  If you need more info, here is my cpu and motherboad info:

  motherboard Info

  CPU - info

  Thank you!

  Whenever you do an upgrade of RAM in the future and you want to it works as expected the first time it is turned on:

  Always purchase compatible memory modules guaranteed

  upgrade only pairs of identical memory modules.

  What you are experiencing, it's what I expected to happen because you do not follow these two rules "" upgrade memory in PCs and laptops. Mixing memory you made generally results in failure at startup or in an unstable operating system.

  I can't tell you what should work, because you have not identified your PC. This is not the same as upgrading a self built PC. Manufactured of PC memory upgrades are always executed by matching the name of the manufacturer of the model to the list on the site in the configuration utility or the manufacturer of memory by the manufacturer. Find a serial number on the side or rear. Post here the number of full product in the wire.

  If I want to add memory to my motherboard ASUS Crosshair V Formula-Z, I look in the manual of the motherboard memory compatibility list. It is quite different with a manufactured as your desktop PC.

• Configuration of dv6 6123cl memory

  Have a Dv6 6123 cl with Windows 7 64 bit.  I will boost the RAM a little. This computer has a 4 and a chip to 2 gb in the two slots available for a total of 6 GB configured out of the factory. I confess to being a little confused because I thought that mixed chips was a strict no-no.  Don't think?  Is why I have a few questions because I do not need or want to pay to improve the full 16 GB/kit game and wonder if 8 GB so will make a significant difference. I don't play but use Indesign a lot and have often 3-4 very large programs open in use at the same time.

  1. have - I have only the unique opportunity to go up to 8 GB? (if no 16)

  2. If I go to 8 GB can I keep the chip 4 gb into it and buy and add a 4 with the same speed and size or should I replace both with a kit of 8 GB?

  3. If I wanted to be really creative - could I keep the 4 and add a plug of 8 to 12 - a little too much, but a good compromise?

  In other words, HP seems to have mixed and matched in a way that I'm not used to it. Can I do - or y at - it something strict owner on the Dv6 I need to know? Thank you.

  MikeyP

  Hi, Mikey:

  Here is the link to the service manual for your laptop.

  http://h10032.www1.HP.com/CTG/manual/c02842252.PDF

  According to me, the page of specifications of product for your laptop won't work.

  In accordance with Chapter 1, page 6, computers laptops with AMD processors as yours, can take a maximum of 2 x 4 GB of memory.  It is a part of the Intel base DV6 covered in this manual which can take 16 GB of memory.

  So, I would not take a chance that a module of 8 GB will work.

  Now to answer some of your other concerns:

  1. Yes, you can mix memory but it does not work in DDR mode.

  So now that we have discovered that your laptop can have only 8 GB of memory, the decision for you now become much easier...

  Buy a 4 GB module and now you get 8 GB and the mode of DDR.

  You should see a small improvement.

  Cost of a compatible 4 GB chip is well worth.

  http://www.Newegg.com/product/product.aspx?item=N82E16820231341

  http://www.Newegg.com/product/product.aspx?item=N82E16820145283

  http://www.Newegg.com/product/product.aspx?item=N82E16820139190

  http://www.Newegg.com/product/product.aspx?item=N82E16820148492

  http://www.Newegg.com/product/product.aspx?item=N82E16820220476

  Paul

• Configuration of memory PowerEdge T410

  Hi all

  Let me start by saying our current configuration of memory (Dell PowerEdge T410):

  We have only one processor installed, so we have 4 DIMM for use A1 - A4. Only 3 are currently installed like:

  A3: 4GB 2Rx8 1333

  A2: 4GB 2Rx8 1333

  A1: 4GB 2Rx8 1333

  A4: white

  in its current wording, our server (running sbs2011) is extremely slow, and we traced it to the use of the RAM. That being said, I went to the store in line of Dell and bought 2 8 GB 4Rx8 1066 RAM sticks to use on the server. I thought I'd take a module of 4 GB, so I then total 24GB (2 GB + 2 8 GB 4).

  Read the manual material, I see that mix 2rx8 and 4rx8 is supported as long as the 4rx8 is in the white slot (first location of the channel). I also see that mixture of capacities of ram is supported as long as each channel has a similar configuration. I assumed that this means that each channel had the same capacity. So I thought 8 GB in every channel:

  A3: 8 GB (channel 2)

  A2: 8 GB (channel 1)

  A1: 4 GB (channel 0)

  A4: 4GB (channel 0)

  I placed the DIMMs in this thought of configuration I have all together until I started the server and I get an error of the incompatibility of DIMM and the BIOS indicates memory configuration not supported. However, starting the server in windows and it says 24GO and is normally. What Miss me? Should I be worried? How can I fix?

  Any input would be greatly appreciated. Thank you very much!

  Hello

  It is not optimal because you mix DIMMS in a bank. The system supports memory triple channel. It does this by spreading a Bank of memory on 3 channels. Here is how the banks are set up:

  DIMM 0 - 1,2,3
  DIMM 1-4

  For an optimal configuration of the DIMMS in slots 1,2,3 must be identical. In older systems that do not support memory flexible configuration the DIMMS in slots 2.3 would be disabled. Since this system supports flexible memory configurations, it will allow the DIMM to stay, but gives no optimal error.

  If you mix memory in this system, you can have 1 Unlike DIMM installed for an optimal configuration. The optimal configuration that uses the maximum memory to the DIMM you have available would be:

  8 GB - 1.2
  4 GB - 4

  The best non-optimal configuration would be:

  8 GB - 1.2
  4 GB - 3.4

  This configuration will always give you errors, but it is better than the current configuration.

  APITech

  I also see that mixture of capacities of ram is supported as long as each channel has a similar configuration.

  This does not mean that you must have identical DIMM modules in the channels. It means that channels must be filled even. Here is an example:

  DIMM 0 slots 1,2,3 =
  DIMM 1 slots 4,5,6 =

  Chanel, 0 = 1.4
  Channel 1 = 2.5
  Channel 2 = 3.6

  You have DIMMs of different rank, speed and capacity mixed through the channels, but you can't have different configurations. For example, in this configuration if you filled DIMM slots 1,2 and then the configuration is valid for DIMM 1 would be filling in only one MEMORY card into the Groove 4 (if the system did not require DIMM be installed in pairs) or 2 DIMMS in slots 4.5. You can't fill a DIMM in the slot 6 since the first slot (3) in the channel (2) is not met.

  The population of channel rule means essentially that you can not complete the second slot in a channel if the first place is not filled. In your housing system 1 and 4 are channel 0. All channels have only a single slot assigned to each memory controller. As long as you have one DIMM in slot 1, you can fill the slot 4.

  Memory population rules can be very confusing. If you have any other questions let me know.

  Thank you

• theoretical issues on memory

  Hello

  1 virtual address space is on the hard drive (where virtual memory is) or physical memory or both of it?

  2. I see that virtual memory is divided into 2 sections, one section is private use (application) and one for the OS and share in its use, it is physical memory also has the same sections as the virtual memory (I want to say the private bytes and share bytes)?

  3 cache system is in physical memory or virtual memory, or both?

  4_ what exactly means editing the pages? very short explanation is sufficient.

  5. in 32-bit systems I see that the page size is 4 KB KB how is the page in 64-bit sytems sizez?

  6. I think that if I mix the memory with the same latency and same volt and the same model with different speeds in different Bank (not double) wil faster memory to work on the lowest speed of the memory, am I good or bad? (I know each wil memory, work on the speed of the motherboard and not higher).

  answers very short wil suffice.

  Thank you

  Johan

  #6 not a good idea to mix memory sticks.

  most memory manufacturers / sellers have the information you are looking for

  sites Web here a http://corsair.com .

  they have forums that go into detail about the memory.

• T320 upgrade memory

  Last year, I had a T320 with the installation of 4 x 8 GB 1600 single rank memory in ECC. I now seeks a maximum of memory in the system and would like to buy 2 x 16GB sticks and use the remaining locations. I know that other housing are disabled when set up as ECC. The server running VMWare 5.5, it will have problems if I swap the memory of ECC memory optimized?

  Also, after he traded it looks like I need to pass the memory slots 2, 3, 5, 6 to 1, 2, 3, 4?

  If all that is Ok, then when I've add 16 GB dual rank sticks should they be put in slots 1 and 2 or somewhere else?

  Thanks for the help.

  Hello

  matthewkilgore

  The server running VMWare 5.5, it will have problems if I swap the memory of ECC memory optimized?

  You shouldn't have any problems switching to Advanced ECC.

  matthewkilgore

  Also, after he traded it looks like I need to pass the memory slots 2, 3, 5, 6 to 1, 2, 3, 4?

  If all that is Ok, then when I've add 16 GB dual rank sticks should they be put in slots 1 and 2 or somewhere else?

  The T320 has two banks of tri-channel (1-3 and 4-6). You shouldn't mix memory in a bank. In the generation previous servers that we did not have the type of population that you intend, but 12th-generation and later supports flexible memory configurations. This means that we have very few restrictions population. You can put the memory almost anywhere you want. This does not mean that the entire population will work or be supported. It simply means that we do not block the non-optimal memory configurations as much as we did in the past. The population of best for what you are considering would be:

  16 GB - 1.4
  8 GB - 5.6 2.3

  Thank you

• Server memory configuration

  Hi guys,.

  Ask a question about the configuration of memory on hp gen8 servers.

  Does anyone no matter what the tests with memory configurations show various IE with full bus speed 1333 mhz 1900 mhz bus speed vs.

  I would like to see some comparisons on this topic, but can not find.

  We are running with (only) 128 GB for 1 900 mhz speed, I want to double but then let it go up to 1333 mhz and I don't want to cripple our memory applications running in the cluster.

  Anyone know where I can read on this?

  Cheers!

  Stefan

  find a post pointing me in the right direction here on the forum after some research.

  Re: Sizes mixed memory Dell R710 to reach speeds of 1333 mhz and 800 mhz

• Problem with upgrade RAM of DC7700

  Good morning guys, I have a problem with my HP DC7700... I need to improve the RAM and I bought a stick of 1 GB RAM... When I put it on the motherboard to the start with the power button, do not start BIOS! She do 5 beeps, what I have to do for this update?

  The bios is upgraded to the version v 01.16 786E1 ultimate... Thank you again!

  Like these memory modules are guaranteed to be compatiblewith the motherboard of your computer desktop and also max out your RAM to 4 GB.

  You did not indicate whether or not you mixed memory sizes, brands or capacities when you upgraded. What are the reasons for copmmon an upgrade attempt will fail.