Can i combine CL7 and CH9 RAM












2















I am looking to upgrade a Desktop currently with 2 sticks of 2GB RAM, by adding a couple of sticks of 1GB RAM. I am unsure what I need to look at to check their compatibility. Both sets of memory run on DDR3, the current 2GB sticks are CH9, while the two I want to add will be CL7. Will these two different types be compatible?



Is there something else I should be looking at to see if the RAM is compatible? Would I be OK to just put both types in the PC and see if at accepts the new RAM or am at risk of damaging something?



Thanks for your help



EDIT:



Current set-up: 2*2GB running at 1600



change to: 2*2GB running at 1600 + 2*1GB running at 1066










share|improve this question

























  • As an aside, typically, the less RAM chips you have, the better access the CPU (motherboard) has access to. So, you'd be better off getting 1 x 4GB ram chip, middle choice would be 2 x 2GB RAM and least performance would be 4 x 1 GB RAM. Of course, it depends on the motherboard.

    – Dave
    Oct 9 '12 at 12:01













  • 2x2GB would actually be faster assuming dual channel is used.

    – Miles Hayler
    Oct 9 '12 at 12:23











  • I never heard of CH... CL is CAS Latency en.wikipedia.org/wiki/CAS_latency and it's not the only property for a RAM that counts: en.wikipedia.org/wiki/SDRAM_latency#SDRAM_access & memory clock speed ... Anyway, I tell you one thing, you are light years faster with more RAM than with using the swap file on the disk. Don't worry about clock speeds. You're not running benchmarks on a computer all day.

    – user127350
    Oct 9 '12 at 14:04













  • Your question is not clear. Please give exact model numbers. You have to explain what CL and CH memory is only because your incorrect usage of terms.

    – Ramhound
    Oct 9 '12 at 14:57
















2















I am looking to upgrade a Desktop currently with 2 sticks of 2GB RAM, by adding a couple of sticks of 1GB RAM. I am unsure what I need to look at to check their compatibility. Both sets of memory run on DDR3, the current 2GB sticks are CH9, while the two I want to add will be CL7. Will these two different types be compatible?



Is there something else I should be looking at to see if the RAM is compatible? Would I be OK to just put both types in the PC and see if at accepts the new RAM or am at risk of damaging something?



Thanks for your help



EDIT:



Current set-up: 2*2GB running at 1600



change to: 2*2GB running at 1600 + 2*1GB running at 1066










share|improve this question

























  • As an aside, typically, the less RAM chips you have, the better access the CPU (motherboard) has access to. So, you'd be better off getting 1 x 4GB ram chip, middle choice would be 2 x 2GB RAM and least performance would be 4 x 1 GB RAM. Of course, it depends on the motherboard.

    – Dave
    Oct 9 '12 at 12:01













  • 2x2GB would actually be faster assuming dual channel is used.

    – Miles Hayler
    Oct 9 '12 at 12:23











  • I never heard of CH... CL is CAS Latency en.wikipedia.org/wiki/CAS_latency and it's not the only property for a RAM that counts: en.wikipedia.org/wiki/SDRAM_latency#SDRAM_access & memory clock speed ... Anyway, I tell you one thing, you are light years faster with more RAM than with using the swap file on the disk. Don't worry about clock speeds. You're not running benchmarks on a computer all day.

    – user127350
    Oct 9 '12 at 14:04













  • Your question is not clear. Please give exact model numbers. You have to explain what CL and CH memory is only because your incorrect usage of terms.

    – Ramhound
    Oct 9 '12 at 14:57














2












2








2








I am looking to upgrade a Desktop currently with 2 sticks of 2GB RAM, by adding a couple of sticks of 1GB RAM. I am unsure what I need to look at to check their compatibility. Both sets of memory run on DDR3, the current 2GB sticks are CH9, while the two I want to add will be CL7. Will these two different types be compatible?



Is there something else I should be looking at to see if the RAM is compatible? Would I be OK to just put both types in the PC and see if at accepts the new RAM or am at risk of damaging something?



Thanks for your help



EDIT:



Current set-up: 2*2GB running at 1600



change to: 2*2GB running at 1600 + 2*1GB running at 1066










share|improve this question
















I am looking to upgrade a Desktop currently with 2 sticks of 2GB RAM, by adding a couple of sticks of 1GB RAM. I am unsure what I need to look at to check their compatibility. Both sets of memory run on DDR3, the current 2GB sticks are CH9, while the two I want to add will be CL7. Will these two different types be compatible?



Is there something else I should be looking at to see if the RAM is compatible? Would I be OK to just put both types in the PC and see if at accepts the new RAM or am at risk of damaging something?



Thanks for your help



EDIT:



Current set-up: 2*2GB running at 1600



change to: 2*2GB running at 1600 + 2*1GB running at 1066







windows-7 memory compatibility






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Oct 9 '12 at 13:19







Pezzzz

















asked Oct 9 '12 at 11:22









PezzzzPezzzz

12616




12616













  • As an aside, typically, the less RAM chips you have, the better access the CPU (motherboard) has access to. So, you'd be better off getting 1 x 4GB ram chip, middle choice would be 2 x 2GB RAM and least performance would be 4 x 1 GB RAM. Of course, it depends on the motherboard.

    – Dave
    Oct 9 '12 at 12:01













  • 2x2GB would actually be faster assuming dual channel is used.

    – Miles Hayler
    Oct 9 '12 at 12:23











  • I never heard of CH... CL is CAS Latency en.wikipedia.org/wiki/CAS_latency and it's not the only property for a RAM that counts: en.wikipedia.org/wiki/SDRAM_latency#SDRAM_access & memory clock speed ... Anyway, I tell you one thing, you are light years faster with more RAM than with using the swap file on the disk. Don't worry about clock speeds. You're not running benchmarks on a computer all day.

    – user127350
    Oct 9 '12 at 14:04













  • Your question is not clear. Please give exact model numbers. You have to explain what CL and CH memory is only because your incorrect usage of terms.

    – Ramhound
    Oct 9 '12 at 14:57



















  • As an aside, typically, the less RAM chips you have, the better access the CPU (motherboard) has access to. So, you'd be better off getting 1 x 4GB ram chip, middle choice would be 2 x 2GB RAM and least performance would be 4 x 1 GB RAM. Of course, it depends on the motherboard.

    – Dave
    Oct 9 '12 at 12:01













  • 2x2GB would actually be faster assuming dual channel is used.

    – Miles Hayler
    Oct 9 '12 at 12:23











  • I never heard of CH... CL is CAS Latency en.wikipedia.org/wiki/CAS_latency and it's not the only property for a RAM that counts: en.wikipedia.org/wiki/SDRAM_latency#SDRAM_access & memory clock speed ... Anyway, I tell you one thing, you are light years faster with more RAM than with using the swap file on the disk. Don't worry about clock speeds. You're not running benchmarks on a computer all day.

    – user127350
    Oct 9 '12 at 14:04













  • Your question is not clear. Please give exact model numbers. You have to explain what CL and CH memory is only because your incorrect usage of terms.

    – Ramhound
    Oct 9 '12 at 14:57

















As an aside, typically, the less RAM chips you have, the better access the CPU (motherboard) has access to. So, you'd be better off getting 1 x 4GB ram chip, middle choice would be 2 x 2GB RAM and least performance would be 4 x 1 GB RAM. Of course, it depends on the motherboard.

– Dave
Oct 9 '12 at 12:01







As an aside, typically, the less RAM chips you have, the better access the CPU (motherboard) has access to. So, you'd be better off getting 1 x 4GB ram chip, middle choice would be 2 x 2GB RAM and least performance would be 4 x 1 GB RAM. Of course, it depends on the motherboard.

– Dave
Oct 9 '12 at 12:01















2x2GB would actually be faster assuming dual channel is used.

– Miles Hayler
Oct 9 '12 at 12:23





2x2GB would actually be faster assuming dual channel is used.

– Miles Hayler
Oct 9 '12 at 12:23













I never heard of CH... CL is CAS Latency en.wikipedia.org/wiki/CAS_latency and it's not the only property for a RAM that counts: en.wikipedia.org/wiki/SDRAM_latency#SDRAM_access & memory clock speed ... Anyway, I tell you one thing, you are light years faster with more RAM than with using the swap file on the disk. Don't worry about clock speeds. You're not running benchmarks on a computer all day.

– user127350
Oct 9 '12 at 14:04







I never heard of CH... CL is CAS Latency en.wikipedia.org/wiki/CAS_latency and it's not the only property for a RAM that counts: en.wikipedia.org/wiki/SDRAM_latency#SDRAM_access & memory clock speed ... Anyway, I tell you one thing, you are light years faster with more RAM than with using the swap file on the disk. Don't worry about clock speeds. You're not running benchmarks on a computer all day.

– user127350
Oct 9 '12 at 14:04















Your question is not clear. Please give exact model numbers. You have to explain what CL and CH memory is only because your incorrect usage of terms.

– Ramhound
Oct 9 '12 at 14:57





Your question is not clear. Please give exact model numbers. You have to explain what CL and CH memory is only because your incorrect usage of terms.

– Ramhound
Oct 9 '12 at 14:57










1 Answer
1






active

oldest

votes


















0














So long as you set the speeds to the slowest it should be fine (assuming it doesn't automatically!) The most important thing is that the voltage is the same.






share|improve this answer
























  • So voltage is determined by DDR3, which is the same on both. I believe that CL7/CH9 is the speed, is this correct? How would I set the speed?

    – Pezzzz
    Oct 9 '12 at 11:35











  • The speed is set in the BIOS and the speed and timings would be printed on a sticker the RAM itself. If you can find a model number for each type of RAM I can help that way.

    – Miles Hayler
    Oct 9 '12 at 12:24











  • I have added the speeds to the question. taking the advice of as few chips as possible; it appears to me that just keeping the faster bigger chips would be better than adding two extra slower chips. Does it look the same to you?

    – Pezzzz
    Oct 9 '12 at 13:08











  • If you were to add the extra 2 sticks, you would have to have them all running at 1066. Some programs will run quicker with more RAM, and some will run quicker with faster RAM. I assume you're running a 64bit version of Windows 7?

    – Miles Hayler
    Oct 9 '12 at 13:50











  • Yes I will be on windows 7. Currently I use the 2*1GB sticks in XP and have some memory issues with large Excel workbooks. I am upgrading to a new system with the 2*2GB sticks on Win 7 and am wondering if it is worth migrating the old RAM across with me.

    – Pezzzz
    Oct 9 '12 at 14:20











Your Answer








StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "3"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});














draft saved

draft discarded


















StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f485394%2fcan-i-combine-cl7-and-ch9-ram%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown

























1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









0














So long as you set the speeds to the slowest it should be fine (assuming it doesn't automatically!) The most important thing is that the voltage is the same.






share|improve this answer
























  • So voltage is determined by DDR3, which is the same on both. I believe that CL7/CH9 is the speed, is this correct? How would I set the speed?

    – Pezzzz
    Oct 9 '12 at 11:35











  • The speed is set in the BIOS and the speed and timings would be printed on a sticker the RAM itself. If you can find a model number for each type of RAM I can help that way.

    – Miles Hayler
    Oct 9 '12 at 12:24











  • I have added the speeds to the question. taking the advice of as few chips as possible; it appears to me that just keeping the faster bigger chips would be better than adding two extra slower chips. Does it look the same to you?

    – Pezzzz
    Oct 9 '12 at 13:08











  • If you were to add the extra 2 sticks, you would have to have them all running at 1066. Some programs will run quicker with more RAM, and some will run quicker with faster RAM. I assume you're running a 64bit version of Windows 7?

    – Miles Hayler
    Oct 9 '12 at 13:50











  • Yes I will be on windows 7. Currently I use the 2*1GB sticks in XP and have some memory issues with large Excel workbooks. I am upgrading to a new system with the 2*2GB sticks on Win 7 and am wondering if it is worth migrating the old RAM across with me.

    – Pezzzz
    Oct 9 '12 at 14:20
















0














So long as you set the speeds to the slowest it should be fine (assuming it doesn't automatically!) The most important thing is that the voltage is the same.






share|improve this answer
























  • So voltage is determined by DDR3, which is the same on both. I believe that CL7/CH9 is the speed, is this correct? How would I set the speed?

    – Pezzzz
    Oct 9 '12 at 11:35











  • The speed is set in the BIOS and the speed and timings would be printed on a sticker the RAM itself. If you can find a model number for each type of RAM I can help that way.

    – Miles Hayler
    Oct 9 '12 at 12:24











  • I have added the speeds to the question. taking the advice of as few chips as possible; it appears to me that just keeping the faster bigger chips would be better than adding two extra slower chips. Does it look the same to you?

    – Pezzzz
    Oct 9 '12 at 13:08











  • If you were to add the extra 2 sticks, you would have to have them all running at 1066. Some programs will run quicker with more RAM, and some will run quicker with faster RAM. I assume you're running a 64bit version of Windows 7?

    – Miles Hayler
    Oct 9 '12 at 13:50











  • Yes I will be on windows 7. Currently I use the 2*1GB sticks in XP and have some memory issues with large Excel workbooks. I am upgrading to a new system with the 2*2GB sticks on Win 7 and am wondering if it is worth migrating the old RAM across with me.

    – Pezzzz
    Oct 9 '12 at 14:20














0












0








0







So long as you set the speeds to the slowest it should be fine (assuming it doesn't automatically!) The most important thing is that the voltage is the same.






share|improve this answer













So long as you set the speeds to the slowest it should be fine (assuming it doesn't automatically!) The most important thing is that the voltage is the same.







share|improve this answer












share|improve this answer



share|improve this answer










answered Oct 9 '12 at 11:27









Miles HaylerMiles Hayler

1443319




1443319













  • So voltage is determined by DDR3, which is the same on both. I believe that CL7/CH9 is the speed, is this correct? How would I set the speed?

    – Pezzzz
    Oct 9 '12 at 11:35











  • The speed is set in the BIOS and the speed and timings would be printed on a sticker the RAM itself. If you can find a model number for each type of RAM I can help that way.

    – Miles Hayler
    Oct 9 '12 at 12:24











  • I have added the speeds to the question. taking the advice of as few chips as possible; it appears to me that just keeping the faster bigger chips would be better than adding two extra slower chips. Does it look the same to you?

    – Pezzzz
    Oct 9 '12 at 13:08











  • If you were to add the extra 2 sticks, you would have to have them all running at 1066. Some programs will run quicker with more RAM, and some will run quicker with faster RAM. I assume you're running a 64bit version of Windows 7?

    – Miles Hayler
    Oct 9 '12 at 13:50











  • Yes I will be on windows 7. Currently I use the 2*1GB sticks in XP and have some memory issues with large Excel workbooks. I am upgrading to a new system with the 2*2GB sticks on Win 7 and am wondering if it is worth migrating the old RAM across with me.

    – Pezzzz
    Oct 9 '12 at 14:20



















  • So voltage is determined by DDR3, which is the same on both. I believe that CL7/CH9 is the speed, is this correct? How would I set the speed?

    – Pezzzz
    Oct 9 '12 at 11:35











  • The speed is set in the BIOS and the speed and timings would be printed on a sticker the RAM itself. If you can find a model number for each type of RAM I can help that way.

    – Miles Hayler
    Oct 9 '12 at 12:24











  • I have added the speeds to the question. taking the advice of as few chips as possible; it appears to me that just keeping the faster bigger chips would be better than adding two extra slower chips. Does it look the same to you?

    – Pezzzz
    Oct 9 '12 at 13:08











  • If you were to add the extra 2 sticks, you would have to have them all running at 1066. Some programs will run quicker with more RAM, and some will run quicker with faster RAM. I assume you're running a 64bit version of Windows 7?

    – Miles Hayler
    Oct 9 '12 at 13:50











  • Yes I will be on windows 7. Currently I use the 2*1GB sticks in XP and have some memory issues with large Excel workbooks. I am upgrading to a new system with the 2*2GB sticks on Win 7 and am wondering if it is worth migrating the old RAM across with me.

    – Pezzzz
    Oct 9 '12 at 14:20

















So voltage is determined by DDR3, which is the same on both. I believe that CL7/CH9 is the speed, is this correct? How would I set the speed?

– Pezzzz
Oct 9 '12 at 11:35





So voltage is determined by DDR3, which is the same on both. I believe that CL7/CH9 is the speed, is this correct? How would I set the speed?

– Pezzzz
Oct 9 '12 at 11:35













The speed is set in the BIOS and the speed and timings would be printed on a sticker the RAM itself. If you can find a model number for each type of RAM I can help that way.

– Miles Hayler
Oct 9 '12 at 12:24





The speed is set in the BIOS and the speed and timings would be printed on a sticker the RAM itself. If you can find a model number for each type of RAM I can help that way.

– Miles Hayler
Oct 9 '12 at 12:24













I have added the speeds to the question. taking the advice of as few chips as possible; it appears to me that just keeping the faster bigger chips would be better than adding two extra slower chips. Does it look the same to you?

– Pezzzz
Oct 9 '12 at 13:08





I have added the speeds to the question. taking the advice of as few chips as possible; it appears to me that just keeping the faster bigger chips would be better than adding two extra slower chips. Does it look the same to you?

– Pezzzz
Oct 9 '12 at 13:08













If you were to add the extra 2 sticks, you would have to have them all running at 1066. Some programs will run quicker with more RAM, and some will run quicker with faster RAM. I assume you're running a 64bit version of Windows 7?

– Miles Hayler
Oct 9 '12 at 13:50





If you were to add the extra 2 sticks, you would have to have them all running at 1066. Some programs will run quicker with more RAM, and some will run quicker with faster RAM. I assume you're running a 64bit version of Windows 7?

– Miles Hayler
Oct 9 '12 at 13:50













Yes I will be on windows 7. Currently I use the 2*1GB sticks in XP and have some memory issues with large Excel workbooks. I am upgrading to a new system with the 2*2GB sticks on Win 7 and am wondering if it is worth migrating the old RAM across with me.

– Pezzzz
Oct 9 '12 at 14:20





Yes I will be on windows 7. Currently I use the 2*1GB sticks in XP and have some memory issues with large Excel workbooks. I am upgrading to a new system with the 2*2GB sticks on Win 7 and am wondering if it is worth migrating the old RAM across with me.

– Pezzzz
Oct 9 '12 at 14:20


















draft saved

draft discarded




















































Thanks for contributing an answer to Super User!


  • Please be sure to answer the question. Provide details and share your research!

But avoid



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f485394%2fcan-i-combine-cl7-and-ch9-ram%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







Popular posts from this blog

Probability when a professor distributes a quiz and homework assignment to a class of n students.

Aardman Animations

Are they similar matrix