BEEP x 3! 1st time for everything. Was sold bad ram. Q? - Page 2 - ehMac.ca
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Old Apr 27th, 2015, 06:53 AM   #11
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x2 on the ram density. Since this Mac does not support more than 8gb. Any high density 4gb module will not work. At least should not work, otherwise it will take 8gb modules.
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Old Apr 27th, 2015, 11:09 PM   #12
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Quote:
Originally Posted by CanadaRAM View Post
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.
Thanks for the wisdom.

So as it stands, my ram has the 8 hi-dense chips, and not 16 you reco. And now, looking at the current chips I have, they are clearly of the 16 chip type (pic from thread).

And, to add to that, I took my lap to work hoping that I would hit the shop - either way, I ran the single ram stick test and they both failed. I guess that could be related to the density. Either way, i called and I can exchange the ram. I'll look for the 16 chip units.

I'll be back to report when i get my hands on 'em.

H!
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Old Apr 27th, 2015, 11:17 PM   #13
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Thanks for all the help gents. It's been good getting that feedback, so I'll know if there's even a next time. BTW, making that Bootable USB was PRICELESS.
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Old May 1st, 2015, 07:48 PM   #14
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Ok.

I'll try to keep this as brief as possible, but success was had only after a triplicate of visits to retail. I essentially went though 4 ram sticks/purchases.

pm-r was correct about the fussiness of Penryns. Looks like the idea that ram chip working on a system w/ slower speeds may not really work in real testing. So after going through 2 sets of MUSHKIN ram, then one G.Skill, this last G.Skill was the winner. (They had actually given be the wrong G.Skill speed on the 3rd try)

G.Skill: FA8500CL7D-8GBSQ - running on a MacBook 5,1 2.4Ghz.

I asked to try the ram in the shop as it was my 3rd visit in 4 days - and i was growing a touch weary. The moment no beeping occurred when i turned it on was like ....

But, I also wanted to add to the experience by mentioning something about the low density recommendation CanadaRAM made. The G.Skill sticks I bought are low density and are working.

Oddly enough, the Hynix ram in my 17" MBP are not - which was the big surprise - and is purring like a well fed cat.

Something for the archives, and I'll be more than happy to post the model of that ram as well.

Anyhow, thanks again for all the guidance folks. Finally getting things rolling as I planned.

A revived MacBook 2008, w/ 8GB and 500GB SSD. This things feels GREAT!

H!
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Old May 2nd, 2015, 01:50 PM   #15
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i recently in a pinch had to purchase non apple spec ram, as they was no stock ..
I made sure that it was 1.5v cl9 ddr3 mhz match and pin and it worked fine.
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