O/Cing RAM CL2 to 2.5

Guys, got a problem here.
When I tried changing my latency timing from 2-3-3-6 to 2.5-3-3-6 or 2-4-4-8 to 2.5-4-4-8. But when I use CPU-Z to detect..its always appears as 2-3-3-6. Seems like I cant change the CAS latency to 2.5 or 3, it always stays at 2. I already disable SPD from my mobo..any other clues to why is it so?
Wanna try uping the FSB to say maybe around 240mhz and I the ram to run at CL2.5 instead of the default CL2. Anyone has this problem as well? Heard that MSI mobos have this problem..is this true? Any way to get around it?
Btw.. I am using a pair of Corsair 3200LLPT.

CPU-Z can be unrealiable sometimes.
Try some other software that can tell you memory setting as well, like:
1. WCPUID
http://www.h-oda.com
2. AIDA32
http://www.aida32.hu/aida32.php
http://aumha.org/freeware.htm
3. PC Wizard
http://www.cpuid.com/
4. EVEREST
http://www.lavalys.com/

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    Quote from: Boarder981 on 14-September-05, 22:05:23
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    Quote from: Zipfelklatscher on 27-January-05, 16:10:52
    Hi!
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  • Mixing ram sticks

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    Thanks sky_on for your answer.
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    See ya
    Quote
    Originally posted by sky_on
    So: YES, it's ok!
    Ok about the vdimm but not about the compatibility/stability, you must try it first for stability. If it's not stable, it's not because the vdimm but it's chip (different chip/manufacturer sometimes could lead to instability).
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    I recently DOWNGRADED the memory in my iMac G5 2.0GHz from 2GB to 1GB. Why? Because menumeters showed that even in my 2GB iMac, my memory usage never went above about 800MB. Mind you I do video editing in Final Cut Express, I create DVD's in iDVD, I do photo editing in Photoshop, I manage my 8K digital photo library in iPhoto, and I could have all these and other applications open and running and my memory usage never went above 800MB. Every time I have checked my pageouts have been 0, meaning I never had to write the memory contents to my hard drive.
    Which begs the question, how is having 1.5 or 2.0GB of RAM going to be a benefit over 1GB of RAM, when I have never needed more than 1GB of RAM in my Mac? I ask because I can either go with 1.0 or 1.5GB of memory in my iMac G5 right now, as I will sell either the 1GB or 512MB memory on ebay. But I'd like to know if someone can give me a compelling reason to put the 1.5GB in my iMac. Otherwise, it just seems like wasted $ to me, as I'll make over double selling the 1GB vs. the 512MB module.
    Home: 20" iMac G5 2.0GHz rev.B/1GB/300GB   Mac OS X (10.4.4)   Work: Mac Mini 1.5GHz/1GB/64MB video/80GB

    "you are telling me what my needs are based on your needs."
    Eric, I have never told you what your needs are or should be. Did I once tell you you were wrong to have 2GB of RAM in your system? No. Did I say it is foolish for anyone to run 2GB of RAM in their iMac? No. Did I say 2GB of RAM in everyone's system would be an unnecessary excess? Certainly. Have you advised people to go for 1.5 or 2.0GB of memory instead of 1GB of memory without doing a needs anaylsis? You most certainly have, here and here and here, even after the original poster states they only want to buy a 512MB module, and in the last example, after someone else in that thread encouraged the novice Mac user to do a needs assessment. I'll let each reader determine for themself which they feel is the irresponsible advise.
    Also, I never said "the average user, 'just isn’t going to need more than 1GB of RAM, now, or in the life of his iMac G5'" as you claim I did. I said a person running Safari, Mail, and iPhoto will not need more than 1GB. I consider that a light user. To clarify, to me a light user and an average user are not synonymous. And yes, a light user could get by with 512MB with virtual memory on occassion with an approximate 5% system slowdown, a slowdown which will probably not even be noticable.
    What is need? To me if someone experiences an occassionaly pageout does not mean they need to go out and buy more memory. As a comparison, imagine you have a china setting for 12 people you received as a wedding gift. Every Sunday your wife fixes a nice dinner and uses the china. Typically you have 4-8 people at dinner every week, depending on if your brother's family joins you or not. But because of a special occassion -- a graduation that weekend -- you have 14 people at your house for lunch. Do you go out and buy enough china for 18 or 24 people, or do you and your wife use your everyday tableware for yourselves and give the other 12 guests the china that one day and save the expense?
    See where I am going? 1.0GB of memory vs. 1.5 or 2.0 compares to 12 china settings vs. 18 or 24. And, no, I am NOT saying you, Eric, should only have 1.0GB of memory, but just if a person's needs dictate that.
    Someone might stock the cabinet with 24 china settings when 29 meals out of 30 they have only 4-8 people eating on their china. But someone like myself, and other people that are budget conscious, probably will not want to do that. And I know you can change the illustration to support going for a higher amount of RAM, but my point is that for most iMac users, I do not believe that is something they really need.
    Regarding your remark about data manipulation, I am sorry if the facts do not support highway's claims. The point of highway's whole remark was based on the premise that Apple shipped 64MB of RAM as the base amount for an iMac of 4 years ago. I showed where that was not a true statement. How is that data manipulation? And the main point of what I wrote was to show how someone writes an erroneous bit of information, then someone else picks up on that and repeats it, and soon more and more come to believe that misinformation. You can see that going on in these posts here and here with Barbara and here with CanadaRAM, either from misinformation from barefeats, or from others users on this board. Notice no one asking about the poster's needs, but just advice to get a higher amount of RAM.
    Again, anyone reading this should do a needs assessment. I noticed, Eric, in your last post you acquiesce about the validity of doing a needs assessment. That's not one small detail. THAT'S THE WHOLE POINT of this discussion. I hope to see less cookie-cutter responses in this forum in regards to memory purchasing and see more responsible advice to determine one's need, especially for the novice users who are asking the questions and won't do any more fact-finding than the advice given them on this board.
    I appreciate the advice of those in past threads who have asked a poster to determine their needs in their RAM buying decisions. In my opinion, that is the best advice they can receive. And I am more than done with this topic, as look at how much I repeated information in this last post that I wrote previously.

  • Display problem after RAM Upgrade to MS6712

    Hi there,
    after a RAM upgrade (512mb to 3GB) my PC has developed a display problem. The graphics are slow / rippled and video playback is very poor. In device manager no "display adapters" are present and there is also an error mesage referring to the VIA CPU to AGP2/AGP3.0 controller not having enough free resources to run due to a conflisct with VGAsave? I've downloaded the latest VIA chipset drivers to no effect?
    System info: MS6712 MB, AMD Athlon 1.25GHZ, XP SP3.0

    OK, here's the info on my PSU;
    It's a Powerman FSP250-60GTU(PF). Input: 230V - 5A, 50Hz. Max Output: 250W
    While I had the case open I took out 2 of the RAM modules and without making any other changes everything appeared to work fine with just the 1GB, so I tried putting 1 more back in to take it to 2GB and again all seems fine? Does this indeed point to my PSU then? If so and it works fine with 2GB should I be thankfull for a 512mb to 2GB upgrade and send the 3rd module back to Crucial??
    Before I posted this thread I did run a memtest from Memtest86+ with all three modules installed and it came up with NO problems?
    Re Henry's post, I searched using the format of the part no on the RAM modules themselves i.e. M368L2923FLN-CB3 and it took me here:
    http://www.samsung.com/global/business/semiconductor/productListNonflexTable.do?fmly_id=118&sht_id=1
    Other info on printed the modules themselves: 1GB DDR PC2700 CL2.5
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  • Kt3ultra2 and infineon RAM problem

    My MSI Kt3ultra2 board was working perfect for the last 6 months with one 256MB Cl2 infineon PC2100 RAM module. after I changed the RAM to one 512MB Cl 2.5 infineon PC2700 RAM module I have one black screen after the other and can't even boot my system - the screen stays black.
    BIOS is the latest version 5.70 and I didn't change anything else but the RAM.
    On 3DMark 2001SE I had about 7500 marks with the old RAM and now only 4900 marks.
    I tested the 512MB RAM in another system where it was working perfectly, so I don't think that I got a defective RAM.
    Can anyone help me ?
    Thank you.

    Hi,
    Run a memtest on it, see the trouble guide....
    Then you know for sure...

  • What's holding me back? ram?

    I can only hit stable at 3.45Ghz (15*230) to run 1:1 and anything higher, memetest got errors. Tried increased to ddr 2.8v, loosen timming at 2.5-4-4-8 but no luck. When running test 5 got tons of errors. I didn't try prime95 since memetest didn't pass... If set to CL3 my system won't boot (Can't set CL2.5 to CL3? Lousy ram?) So I decided to run dividers to see how far my system can push.
    Currently [email protected] (15*250) cpu temp idle at 50c load at 70c (readings taken from speedfan v4.2)
    Ratio 5:4 ddr@333
    Cpu voltage - 1.45v
    DDR voltage - 2.8v
    AGP voltage - 1.6v
    Spread spectrum - Disable
    AGP/PCI clock - 66.67/33.33
    Dram timing manual 2.5-3-3-8
    Running prime95 either small or large both failed. Increased vcore up to 1.5v, agp 1.7v and timming at 2.5-4-4-8 also failed when running prime. Now guys what could be the problem here? Even running at ratio 3:2 ddr@266 also won't help! Thanks 

    The whole point of using memtest is to ensure your memory is not the limiting factor in your overclock. In order to really test your memory, you need to do this.
    Run a 4 hour loop of standard tests (1-7)
    Run a 24 hour loop of test 5
    test 5 needs something like 32 (or 200 (or 1 million)) iterations to test your whole stick of memory, however many iterations it is, 24 hours should be just enough time to complete that)
    No offense but you have cheap memory so it will not overclock very far. If you want to overclock with a 1:1 FSB:MEM ratio then I would recommend buying ADATA Vitesta PC4000 memory. It's cheap, I've used it in my P4 system, and I've seen it work in other people's P4 systems.
    Therefore, in order to utilize your cheap memory, you're going to need to run a divider (keeping your memory at 200mhz or lower).
    If you think just because you're running a divider, now you can raise the FSB to 250 (keeping your memory at 200) then you're wrong. That's a significant increase in CPU clock speed and chances are it's just too far of an increase or it will require more of VCore to run at that speed. With certain pentium 4's you can do this sort of thing but not all of them. I had a 2.4C that went straight to 3.0ghz without a bump in VCore. You have a prescott so that changes the scheme of things. FYI: I've seen prescotts overclocked real far, so I'm surprised you can't get this far.
    Here's what you do. Run a 5:6 divider (the one you have now, where your memory is 200mhz when your FSB is 250). Set your FSB to 250 and run memtest the way I told you to. This will test your memory at it's highest possible frequency, which means, when your FSB is lower then 250 your memory will be lower then 200 and that means that your memory is safe at 200 so it's safe at anything lower then that.
    Now set your FSB to 200, keep your VCore stock. Turn the computer on, run prime95 "in place FTT's" at priority 10 and make sure it doesn't fail for as long as you feel comfortable (note: this is testing your CPU at stock speed and your memory at 166 I believe). The reason I say test it for as long as you feel comfortable is because it's stock speed so as long as it passes for like a half an hour you know you're okay. Now raise the FSB from 200 to 205, do not increase VCore. Run prime95 as stated again for 1-3 hours. If that passes, raise the FSB from 205 to 210, again, do not increase VCore. Keep raising the FSB in 5mhz incraments (without raising VCore) until prime95 won't pass anymore, (note: the longer you run prime95, the greater the chance it will fail!!! so keep this in mind when cutting off your tests at the three hour mark, i've seen tests fail at 5, 7, and 12 hours in). When it doesn't pass anymore, raise the VCore to the next lowest VCore (1.525 to 1.5375 (or something lower if there's something in between the two of them)). Re-run prime95 with the new VCore for as long as you can tolerate and if it passes raise the FSB and try again. If it fails, go back to BIOS and raise the VCore again to the next lowest incrament. Repeat this process until you finally pass prime95. then go back to increasing FSB by 5mhz incraments, again not raising the VCore with each iteration. Then when you come to the next failure in prime95, begin raising the VCore again. Eventually you will come to a point where you cannot stabilize your computer in prime95 regardless of how much VCore you give it or you can't get to the desired VCore because temperatures are too high. If that's the case, back the FSB down to the last stable FSB/VCore and that will be your max overclock.
    What should you have learned?
    You need to watch your temperatures the entire time when running prime95, never take your eyes off of that. Too much VCore will fry a chip but extra VCore contributes to electromigration which in turn decreases the life of the chip. Therefore, think before you act. An unreasonable amount of VCore, although it stabilizes the chip, may eventually end it's life preemptively.
    You must record each successful iteration of FSB/VCore so this way when you encounter an irreperable failure you can revert back to the fastest previous FSB with the correct VCore

  • Why is apple ram so much more expensive than normal ram

    for 2 gb of apple ram for the dual 2.7 is about $300, this ram doesn't even have its own heatsink and is only CL3. why is ram with a heatsink and CL2( which is faster) about 200 $$ cheaper? is there any difference in the ram or is apple trying to make a big profit ?

    I found out that there is nothing special about the
    ram.. and the corsair ram is a lot faster and better
    So, is the Corsair ram you are talking about that which TigerDirect.com has advertised over at dealmac.com today. The after rebate price for a 1Gb stick of 4200 is about $45. Not too bad if it would work in a Quad.

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