BEEP x 3! 1st time for everything. Was sold bad ram. Q? - ehMac.ca
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Old Apr 26th, 2015, 07:39 PM   #1
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BEEP x 3! 1st time for everything. Was sold bad ram. Q?

I was pretty spooked. 3 beeps i've NEVER heard before in all my time tooling in the past. I was like. WTF. So i jumped on google and I got the news:

3 successive tones, a 5 second pause (repeating): This indicates RAM does not pass a data integrity check.

BUMMER.

Bigger bummer is that I'm past the return/refund window, but i'm still in the exchange period - which ends in 2 days. I sometimes sit on parts and install them later on a clear day (like today). Last time I do that.

So I was gathering some parts to revive this '08 MacBook i was gifted. I'm around the corner from Canada Comp, so i went over to buy a SSD and some ram.

Specs on what ram I bought.

Mushkin Apple 4GB DDR3 1066MHz CL7 SODIMM (971644A)

Now, i've done this before when i bought ram that was rated a touch faster than the required specs - can't recall when I did it, but I know I did, and it worked fine.

1066Mhz sticks aren't falling out of trees, so I was originally ready to grab something faster, but noticed there were some of the actual sticks i need, so I grabbed them. womp womp.

With that long winded preamble, are there ram specs i SHOULD be avoiding - outside of something slower?? What about the voltage? I'll search it out - but thought it could ask the erudite crew here.

I'm running this MacBook 5,1, and my ram requirements are as follows:

RAM Type: PC3-8500 DDR3 Min. RAM Speed: 1066 MHz
Details: Supports 1066 MHz PC3-8500 DDR3 SDRAM

Should I then not, in theory - be able to use any of these?

I'm going in there tomorrow and scoop something.

Lord - and i was just in there today to grab an external. Had I known! ugh.

Thanks - and sorry about the length.

H!
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Old Apr 26th, 2015, 08:26 PM   #2
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Flabbergasted as you are those do not work! Almost exactly the right specs. Make sure the ramslots are clean and the ram gets well-seated.
Anyhow, 1333 MHz DDR3 sticks should also work, they'll just underclock. Just make sure you can return the sticks in case they don't work.
BTW: ask CanadaRam. I bet those sticks should be 1.33V, not 1.5V. Non-ECC as well.
Good luck!
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Old Apr 26th, 2015, 08:32 PM   #3
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I don't think that RAM will work as I believe it needs 667 MHz PC2-5300 DDR2 SDRAM and as the canadaram.com knowledgable expert said when I was adding RAM to a similar MB some time ago, that the Penryn Macs, which I believe that model is, were very fussy and particular on RAM type.

I got the proper RAM from canadaram.com years ago and that MB is still in use.
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Old Apr 26th, 2015, 09:15 PM   #4
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Quote:
Originally Posted by pm-r View Post
I don't think that RAM will work as I believe it needs 667 MHz PC2-5300 DDR2 SDRAM and as the canadaram.com knowledgable expert said when I was adding RAM to a similar MB some time ago, that the Penryn Macs, which I believe that model is, were very fussy and particular on RAM type.

I got the proper RAM from canadaram.com years ago and that MB is still in use.
This is what I pulled out of the MacBook, and eventually put back in - and works fine.



So these are the min specs I can play with. Again, i think i prob got a bad batch. But if the replacement doesn't work, i'll look at other options then. 😩

H!
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Old Apr 26th, 2015, 09:17 PM   #5
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Sorry, PM-R, but this 5.1 machine will definitely require PC3-8500 DDR3 1066 MHz ram. The actual problem seems to be it was not originally intended to carry that much/ over 6GB of ram.
However, reflashing to a higher boot rom/ (U)EFI version seems to solve that problem:
Quote:
*Apple officially supports a maximum of 4 GB of RAM. Originally, this model was only unofficially capable of stably supporting 6 GB of RAM, but as confirmed by site sponsor OWC, it is capable of supporting 8 GB of RAM if updated to Boot ROM Version MB51.007D.B03 and running MacOS X 10.6 "Snow Leopard" or higher.
How to get the right EFI firmware? Here, I think: Other World Computing Blog
There you have it, HenriHelvetica. The best I can think of. Just flash your rom and and enjoy your new memory sticks anyhow, it seems. Good luck!
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Old Apr 26th, 2015, 09:56 PM   #6
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OSX updates should have automatically updated the ROM, unless you are still running on 10.5.x

I've had this issue on several inbetween generations computers in the past. So it's time for some OSX update before you reinstall that ram in there.. I've had random DDR3 1333mhz in my 09 Macbook Pro, which has the same spec as the 08, but faster CPU.. so i can't belive it doesn't work.
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Old Apr 26th, 2015, 10:07 PM   #7
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Yup, the compatible RAM always works best. Sorry I didn't realize the MB referred to were the same 2008 MacBook 5,1 model, not the earlier 2008 MB model.
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Old Apr 26th, 2015, 10:25 PM   #8
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Quote:
Originally Posted by IllusionX View Post
OSX updates should have automatically updated the ROM, unless you are still running on 10.5.x

I've had this issue on several inbetween generations computers in the past. So it's time for some OSX update before you reinstall that ram in there.. I've had random DDR3 1333mhz in my 09 Macbook Pro, which has the same spec as the 08, but faster CPU.. so i can't belive it doesn't work.
Thank you for the update, IllusionX. Very clear on underclocking ram.
But clearly we are talking EFI upgrade here: If HenriHelvetica doesn't upgrade his EFI, he'll never be able to use his newly acquired and correct 4 GB ram sticks. As per firmware.
With the old firmware: yes. One at a time. Both at a time: no. Unless a firmware upgrade.
Hope this is clear.
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Old Apr 27th, 2015, 12:31 AM   #9
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I saw one of the messages whilst i was out for quick errand (thanks for all the feedback), and for a second - I thought that maybe I hadn't looked at the Boot ROM info (which I had). But when I got home, i was correct - i had looked at it since i made sure it was the correct one from the few articles I had read stating it's importance:



I'm running Mavs so this should not have been an issue, correct?? And since this info was mostly coming from 3rd parties, Apple also has the info available to research.

So I've started to narrow down the possible errors (thanks to you guys), but I'm leaning more and more on the side of bad ram.

The last step might be to stick 1 of the sticks and see where the 6G total takes me. I might try this in the AM - or at some point tomorrow as I'll be taking my ram and lap with me to work to tool with it some more.

Thanks again gents. This has been puzzling to say the least.

H!
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Old Apr 27th, 2015, 02:10 AM   #10
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Try the modules one at a time, to see if one is defective (the machine does not require 2 modules to boot)

1.5V is correct, 1066 MHz RAM machines have never required 1.35 lo-voltage modules

Look at the RAM and see if it has 16 memory chips on the module. We have seen problems with high density 8-chip modules in 1066 MHz Macs (mostly iMacs) so we only recommend 16 chip dual-rank low density modules.

If you have done the Apple updates, there should be no restriction to using 8GB total RAM.
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