make sure they're in pairs...

I assume your RAM config is 4x2GB and 2x4GB...?

Yup..correct
And mine is Harpertown series..

it doesn't matter whether it's Woodcrest, Clovertown or Harpertown... they have to be in pairs...

I thought the Nahalem setting is different.. I mean the sequence on the high and lower riser..

This post has been edited by b48753: Aug 5 2010, 06:47 PM

Nehalem is the micro-architecture for Gainestown (set of Xeon processors used in MP 2009), which no longer use FB-DIMM RAM modules on upper and lower riser cards anymore... It comes in a single tray for processors and ram slots... And it has nothing to do with the previous MP setups... In case you are confused about code names and architectures:

Woodcrest - Core - MP 2006
Clovertown - Core - MP 2007 8-core only
Harpertown - Penryn - MP 2008

Bloomfield - Nehalem - MP 2009 4-core only
Gainestown - Nehalem - MP 2009 8-core only, MP 2010 4-core only
Gulftown - Westmere - MP 2010 8- and 12-core only

Info courtesy of Wiki...

This post has been edited by Eithanius: Aug 5 2010, 08:25 PM

Where else can I get KTA or equivalent RAM?

PC1333 1x2gb DDR3.

I don't think there us any KTA ram with speed 1333. Unless ur mentioning for Mac pro 2009 model.

Why not...?

Kingston website is listing KTA-MB1333/4G for iMacs 2010....

And mind you, Mac Pro 2009 uses 1066 modules, not 1333...

Tq for the clarification cos I'm only updated to 2009.

Starccs, if you dont mind, could you tell me where you got the ram and how much is it? planning to upgrade my mpb to 8gb. PM me if its not convinient for you to post the prices here. tq and cheers.

upgraded my macbook to 4GB kingston for SC II, lol~
got it from pc fair at RM268 now running flawlessly.
Was in dilemma to get from Apple store or ciplak Kingston, luckily it works, save 60% of price.

Which spec of mbp u got there can it run in full detail? I order my sc2 sea ver for rm189 waiting for it to arrive.

where got apple store here, apple reseller lah, if you guys need recommendation try crucial its the closest to the oem apple uses since the company that makes it happen to make apple's oem ram modules.

Heya,
It was in Lowyat. I cant remember which for sure i think it's cycom, the mac area. or was it czone? price was RM580 for a stick. Kingston

Was it a corner lot...? The last I checked couple of weeks ago, they quoted me RM 1040 for a single stick of 4GB... Kingston KTA... You sure they quoted you a KTA and not a KVR...?

almost every Mac users know there's no Apple store in Malaysia, thus OBVIOUSLY I was referring to Apple Online Store
I know the difference between apple store and apple reseller

This post has been edited by CreamMilk: Aug 8 2010, 11:03 PM

Am using a KVR. All is running fine

You'd be surprised how many people here that are CLUELESS about that, and to be correct with terms Apple Store and Apple Online Store has a huge difference, by just removing "ONLINE", its easily understood that you are reffering to a brick and mortar store, comprende?

Thanks for the info..so now new mac pro can use about the same RAM available for desktop.. like it

Read ECC...

There are reports that using non-ECC memory modules work fine, but then again it is always recommended to use ECC RAM as Mac Pros are designed to just in case to avoid certain risks of the machine hanging due to data corruption on the modules...