Crucial Ram DOA

[theSeb]

That is completely untrue. Any with a 26xxQM processor does not, any with a 27xxQM process does.

Early 2011:
2635QM (2.0 GHz) -> No
2720QM (2.2 GHz) -> Yes
2820QM (2.3 GHz) -> Yes

Late 2011:
2675QM (2.2 GHz) -> No
2760QM (2.4 GHz) -> Yes
2860QM (2.5 GHz) -> Yes

The differences between the 26xxQM and 27xxQM processors are:

Higher Max Turbo Frequency in the 27xxQMs

Max Memory Size
16 GB vs 32 GB

Memory Types
DDR3-1066/1333 vs DDR3-1066/1333/1600

Intel vPro Technology
No vs Yes

Intel Virtualization Technology for Directed I/O (VT-d)
No vs Yes

Intel Trusted Execution Technology
No vs Yes

There is no need to be listing the specifications since I know them quite well and if I didn't, I could have looked them up on intel's web site. My 2011 mini server has the 2635qm CPU and runs with 1600 MHz flawlessly. In fact, certain 1866 MHz RAM will work too and has been proven so.

I can post screen shots tomorrow and links to my geek bench scores to prove that the 1600 MHz ram makes a difference since I am on my iPad now.

I am going to repeat: ALL 2011 MBPs will work with 1600 MHz ram as long as the timing is 9-9-9-24. The question of whether your computer will work with certain RAM is not dependant on just the CPU specifications.

Here is your homework assignment: the sandy bridge desktop CPUs only support up to 1600 MHz RAM. In fact, only the 3 fastest CPUs support this ram according to the CPU specifications. Yet I can run 1600 MHz RAM with a 2600 CPU. Heck, I can run 1866 MHz and even faster in some instances. Find out why.

 

[Krazy Bill]

My Crucial SODIMMs have a Samsung sticker on them.

All RAM used throughout the universe is made by the same 3 people in China.

 

[nicklad]

There is no need to be listing the specifications since I know them quite well and if I didn't, I could have looked them up on intel's web site. My 2011 mini server has the 2635qm CPU and runs with 1600 MHz flawlessly. In fact, certain 1866 MHz RAM will work too and has been proven so.

I can post screen shots tomorrow and links to my geek bench scores to prove that the 1600 MHz ram makes a difference since I am on my iPad now.

I am going to repeat: ALL 2011 MBPs will work with 1600 MHz ram as long as the timing is 9-9-9-24. The question of whether your computer will work with certain RAM is not dependant on just the CPU specifications.

Here is your homework assignment: the sandy bridge desktop CPUs only support up to 1600 MHz RAM. In fact, only the 3 fastest CPUs support this ram according to the CPU specifications. Yet I can run 1600 MHz RAM with a 2600 CPU. Heck, I can run 1866 MHz and even faster in some instances. Find out why.

Is the RAM actually running at 1600 MHz though or 1333 MHz in a Mac? Working with the RAM is a different semantic to using it at full speed.

 

[boatcapt]

Talked with Crucial today, turns out I have one bad module. They are shipping me a new one.

 

[0dev]

Talked with Crucial today, turns out I have one bad module. They are shipping me a new one.

Told ya

Enjoy your replacement working RAM

 

[theSeb]

Is the RAM actually running at 1600 MHz though or 1333 MHz in a Mac? Working with the RAM is a different semantic to using it at full speed.

Yes, the RAM is clearly running at 1600 MHz when we look at the geek bench sores, in particular the memory bandwidth increases between the two in the same computer. That's the point of higher clocked memory.


1333 MHz memory
Memory 5014
Read Sequential
single-threaded scalar 5474
6.70 GB/sec

Write Sequential
single-threaded scalar 7865
5.38 GB/sec

Stdlib Allocate
single-threaded scalar 3623
13.5 Mallocs/sec

Stdlib Write
single-threaded scalar 3392
7.02 GB/sec

Stdlib Copy
single-threaded scalar 4716
4.86 GB/sec

1600 MHz memory

Memory Performance

Memory 5511
Read Sequential
single-threaded scalar 5566
6.82 GB/sec

Write Sequential
single-threaded scalar 8053
5.51 GB/sec

Stdlib Allocate
single-threaded scalar 3613
13.5 Mallocs/sec

Stdlib Write
single-threaded scalar 4503
9.32 GB/sec

Stdlib Copy
single-threaded scalar 5823
6.00 GB/sec

1600
http://browse.geekbench.ca/geekbench2/530246

1333
http://browse.geekbench.ca/geekbench2/530175

And here is a more comprehensive set of benchmarks - the 1600 MHz memory also makes the Intel HD3000 slightly faster in OpenGL

https://forums.macrumors.com/threads/1293809/

 

[Benbikeman]

All RAM used throughout the universe is made by the same 3 people in China.

Like the Cloud:

 

[boatcapt]

New ram came in today, I installed it. This time everything worked like it was suppose too. Overall I have to give Crucial a thumbs up, they took care if everything like they should have.

 

[Bluedog54]

I prefer Samsung RAM though I have heard nothing but good things about Crucial.

Heck, I just put 8 GB of Kingston 1600 MHZ RAM in my early 2011 2.3 GHz I7 MBP. Clearly a difference running Lion.

 

[Bluedog54]

I prefer Samsung RAM though I have heard nothing but good things about Crucial.

Heck, I just put 8 GB of Kingston 1600 MHZ RAM in my early 2011 2.3 GH2 I7 MBP. Clearly a difference running Lion.

 

[Ccrew]

Heck, I just put 8 GB of Kingston 1600 MHZ RAM in my early 2011 2.3 GH2 I7 MBP. Clearly a difference running Lion.

Makes you double post on forums tho, better get it checked

 

[thundersteele]

Makes you double post on forums tho, better get it checked

Of course, it's DUAL channeling

 

[steve knight]

I went through their webpage man that is so outdated the only have core duo's listed. took two weeks to get the replacement.

 

[bniu]

I've bought quite a few sets of Crucial RAM and all but one set worked fine. For some reason, the PC-10600 Crucial 8GB kit I bought earlier this year for my MBP 17 was DOA but Crucial was pretty quick to take it back and refund me, though I was a bit peeved about paying $10 to ship it back. Nevertheless, I was going to order a replacement kit for the replacement MBP 17 (yeah, bad luck, both computer and ram kit were defective in one weekend!), but the refurb MBP 17 somehow arrived with 8 gigs already installed, so never had a chance to try out a replacement crucial kit. At the same time, I had ordered 2 sets of Crucial PC-8500 ram to upgrade two other Macs to 8 gigs and each kit worked great. Got a Crucial 512GB SSD coming later this week, and will eventually buy the 16GB crucial RAM kit soon! For memory needs, I've found it's always Crucial FTW!

 

[Ice Dragon]

Heck, I just put 8 GB of Kingston 1600 MHZ RAM in my early 2011 2.3 GHZ I7 MBP. Clearly a difference running Lion.

Yeah Kingston is good too. I notice a big difference from HDD to the SSD more than I notice the difference with the RAM but I know both play a key role in making the Mini behave differently.

 

[jon08]

I ordered 8GB 1333Mhz RAM from Crucial the other day for my late-2011 MBP and will report back if it works fine.

I'll be shipping my 8GB Corsair RAM back though, as one of the modules is apparently defective.

 

[boatcapt]

I insisted that Crucial pay the return shipping and they did without much hassle.

 

[jon08]

I received my Crucial 8GB 1333 Mhz RAM yesterday and it seems to be working seamlessly. I ran Rember (3 loops) and it didn't produce any errors, so I guess it's safe to assume that this RAM will be fine.