is ram 200 pin (as specified in manual) or 204 pin

It has to be 204 pin. Crucial.com is selling the 204 pin version for the newer MacBooks.

Yes, it is more than likely 204 pin

Crucial says it is 204 pin and Wikipedia says it too

http://en.wikipedia.org/wiki/DDR3

Hi guys,

I can confirm it is definitely DDR3 204 pins! I just changed my 2*1Gb for 2*2Gb bought at Crucial, and it works **** fine!

Ha ha ha nice little stars 😀 **

It works "just" fine 🙂

Even though this has already pretty much been confirmed - I will add another confirmation just for the heck of it.

After a talk with Apple Support today, they confirmed to me that the specifications are / were incorrect regarding the pin numbers, the correct memory module specs. is of course DDR3 204-pin (PC3-8500) So-DIMM.

Having 200-pins would also be quite odd, as the JEDEC Standard No. 21C (Page 4.20.18-1) states that DDR3 SDRAM Unbuffered SO-DIMM (PC3-6400/8500/12800) should have 204-pins.

Anywho, happy hunting for cheaper retail modules. =) I myself am not going to pay 3x times the price just to have Apple modules "because I can", I would rather throw that doe into something else.

// Michael

DDR3 is only 204 pin there is no laptop ddr3 200 pin

Right you are - but sadly that doesn't stop websites from trying to sell 200-pins (though I'm sure they just have their facts wrong, pretty sure it's not deliberately), take for example Best-Buy:
http://www.bestbuy.com/site/olspage.jsp?skuId=9146667&type=product&id=1218035197 495

🙂

Any who, I'm looking forward for a package containing 4GB Kingston DDR3 SoDIMM RAM - quite the savings as compared to the Apple kit. Sadly I couldn't find any CAS-timing specs on the Apple kit, but I can't imagine it having some insane timings which would thwart the Kingston (which have limited lifetime guarantee mind you!), that would make them worth the about 3x price tag. 🙂

Be careful purchasing the 4gb Kingston DDR3 for the new macbook's/pro's. I have been through 2 sets now and get the freezing (before fw updates) / wake from sleep issue (after fw updates). I am now trying ram from another manufacturer.

Oh I see, that sure sounds like bad luck indeed. You don't happen to have the model numbers off the modules you tried out?

But thank you for the heads up - nice with the guarantee and everything. 😉

I did notice quite a few people complaining over trouble related to upgrading ram on their MacBook's - but I sure hope this has been freak accidents.

Generally speaking problems related to faulty ram modules, have been very scarce in my case (and I sure have made by deal of upgrades and custom builds). Actually have a bag of various ram modules laying around here somewhere (50+ modules) - always comes in handy. ;-D Sadly though, no SoDIMM in the candy bag...

Any who - upon retrieval I will see how it goes. I will report any findings (good or bad). Hopefully good. ;-D

The code for the Kingston ram is KTA-MB1066K2/4G

The ram itself seems to be fine (all hardware tests are ok), so it would have to be the new chipset in the new model mb/mbp that is fussy.

I am waiting on 4gb of ram from an ebay seller. Some have had good luck with this particular ram so I thought I would give it a go as well. Should hopefully arrive this week.

Ah well that is much worse now isn't it. Faulty ram is easy to take care of, get a new "pair". But a faulty (fussy is just a nice word for it 😉 ), is way worse!

Any who, checked my order and can see that it is apparently a different model of RAM I have ordered, a pair of KVR1066D3S7/2G.

The ".../4G" in the model name you wrote would imply it was a 4GB single-module kit? I suspect it wasn't for a MacBook right? (I'm wondering whether you are trying with a single module of 4GB or the more optimal of 2 modules of 2GB).

The Kingston I bought was specifically for the new mb/mbp. It came in a 4gb kit with 2 x 2gb sticks. The RAM you have ordered seems to be for standard laptops not Apple Macs and is value ram. However I am guessing they can be used and might work.

The KTA-MB1066K2/4G comes with a lifetime warranty where the value ram does not.

Ah right, I see. Do you know the details of the "built for ..."? It would seem it is not compatibility as that hasn't been working out - might be the timings? But then again, having better timings for ram modules on a laptop seems redundant. 🙂 (but nevertheless something we all want to maximize! 😉 ).

I'm pretty sure they ought to work, as they conform to the specified standards, so unless the MacBook is "fussy" - there should be no problem. 🙂

Just a little side note regarding the guarantee - the value ram comes with a lifetime guarantee as well (you can look at Kingston's website: http://www.ec.kingston.com/ecom/configurator_new/partsinfo.asp?root=us&LinkBack= http://www.kingston.com&ktcpartno=KVR1066D3S7/2G&id=8). Without having checked all fully, I'm pretty sure they give that guarantee for all their memory modules - as discussed earlier faulty ram is very rare which is why they can do so.

I have always trusted NewEgg for their price and service and the reviews are generally good. I have found this ram if anyone is interested. I have no need to upgrade to 4 GB yet so I can't offer first hand experience.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820146878

Alright, finally got the Ram kit and it is apparently workling like a charm.

Have done a full check with TechTool just in case, no problem with sleep or anything else.

So now it's the waiting game, to see if they perform.

Any who - Kingston KVR1066D3S7/2G works for the new MacBook Aluminiu 13".

// Michael