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Hi,
First of all, my English is not very well, sorry!
I've bought new memory for my by my Mac Pro 2.8Mhz Quad Core mid 2010. It is 4x Kingston KTA-MP1066QR/8G memory. Installing went well, but it's clocked down to 800Mhz by the Mac. Why? And more important how can I fix it so I will have my 4x8GB @ 1066Mhz?
Ellen
Mac Pro (Mid 2010), Mac OS X (10.6.8)
I would have gone with their 1333Mhz
| KTA-MP1333/8G | 8GB 1333MHz DDR3 ECC Module | Get Price |
| KTA-MP1333DR/8G | 8GB 1333MHz DDR3 Reg ECC Module with thermal sensor | Get Price |
For example:
http://eshop.macsales.com/shop/memory/Mac-Pro-Memory#1333-memory
I would only saying what is out there.
Try with just 3 x 8GB and see what it shows.
What did the Apple RAM show?
And actually the W3680 is $590 6-core 3.33GHz (nicer cpu) and might make the difference, and sounds like you might be in the market for one later to improve performnace
Ask Kingston, of course but they didn't - and most vendors DO allow 30 days for exchange or restocking etc.
I was questioning if you were aware there was 1333 and why you bought what you did.
As to whether it will slow your work or show difference... you think real world will be noticeable?
I am aware of the existing of 1333Mhz memory, but the Apple memory was 4x2GB 1066Mhz ECC memory, so I thought is was best to buy the same with only more GB...
The articel you linked was very interesting, thank yoy, altough the conlusion there was ECC memory won't have a problem and my memory is ECC. So I still don't know what the problem is and more important how to solve it. The do explain there that 4x8 at low speed is more helpfull than 3x8 at high speed, so that's a little comforting, but I still want my high speed. 😉
Going by "Apple" isn't always the guidance and path to look to when upgrading and trying to get the most. Of course it seemed the safe route. But Apple is also based on July 2010 information too.
I just read that OWC now has 8GB DIMMs that are capable of being used with lower density 1-2-4GB modules so people can use their existing memory and add just one or two 8GB DIMMs if they wish.
The difference in price of 1066 and 1333 are negligable and RAM is "backward compatible" (costs too much to have two different types when you can make one and not have a supply problem of having what customers need and want to buy).
Heck, some want to use 1600MHz if possible, as that is what new processors from Intel support. And RAM prices have really gotten so much more affordable lately compared to the highs they fetched two years ago.
Would have is to late. I just bought this memory and it is to expensive to change it again.
for some other thoughts in another thread on memory speed:
It's too bad I didn't know that sooner... I thought I was doing the right thing to look for the 1066. It's even more dificult to find.
1066Mhz memory clocked down to 800Mhz: HELP
