1600MHz works and runs at 1600 MacBook Pro 2011

Hackintosh Sr. · Apr 8, 2011, 06:52 PM

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5)

Just thought I would let you guys know since I was curious. Even though our MacBooks come with 1333mhz ram, the processor is capable of 1600mhz. When I put my 1600 Kingston ram in it initialized at 1600!

I used
http://www.provantage.com/kingston-technology-khx1600c9s3k2-8g~7KINM1RK.htm

cmclaughlan · Apr 8, 2011, 07:25 PM

Can you show a screenshot of anything recognizing the RAM as 1600 ?

Not that I don't trust you but it sounds pretty darned cool !

thunng8 · Apr 8, 2011, 07:44 PM

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5)

Quote:

Originally Posted by Hackintosh Sr.

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5)

Just thought I would let you guys know since I was curious. Even though our MacBooks come with 1333mhz ram, the processor is capable of 1600mhz. When I put my 1600 Kingston ram in it initialized at 1600!

I used
http://www.provantage.com/kingston-technology-khx1600c9s3k2-8g~7KINM1RK.htm

Are you able to do a few benchmarks like geekbench or cinebench?

2Turbo · Apr 8, 2011, 07:44 PM

Did you notice any difference from 1333 speed?

Hackintosh Sr. · Apr 8, 2011, 08:18 PM

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5)

I know screenshots or nothing. As soon as I get home I'll post. 2-3 seconds was cut off boot. It's hard to tell speed cause I installed a vertex 3 240gb along with it

Hackintosh Sr. · Apr 8, 2011, 08:21 PM

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5)

Quote:

Originally Posted by Hackintosh Sr.

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5)

I know screenshots or nothing. As soon as I get home I'll post. 2-3 seconds was cut off boot. It's hard to tell speed cause I installed a vertex 3 240gb along with it

Not along with it

I booted with vertex 3 a few times then put the ram in. Noticed a couple seconds but could be nothing. I'll try to bench for u guys

Hackintosh Sr. · Apr 8, 2011, 08:53 PM

this attachment work?

daneoni · Apr 8, 2011, 08:57 PM

That just proves the RAM is recognised not that it is actually running at 1600MHz. The machine could be downclocking the chips to the standard 1333MHz which is very common. Same story with machines which only support 3.5GB of RAM. They recognise when 4GB have been installed but only use the 3.3-3.5GB they are limited to.

Hackintosh Sr. · Apr 8, 2011, 09:17 PM

Geekbench

Hackintosh Sr. · Apr 8, 2011, 09:18 PM

Quote:

Originally Posted by daneoni

That just proves the RAM is recognised not that it is actually running at 1600MHz. The machine could be downclocking the chips to the standard 1333MHz which is very common. Same story with machines which only support 3.5GB of RAM. They recognise when 4GB have been installed but only use the 3.3-3.5GB they are limited to.

So how do you tell for sure? I would think it would list as 1333 if its downclocked.

JamesGorman · Apr 8, 2011, 10:35 PM

Quote:

Originally Posted by daneoni

That just proves the RAM is recognised not that it is actually running at 1600MHz. The machine could be downclocking the chips to the standard 1333MHz which is very common. Same story with machines which only support 3.5GB of RAM. They recognise when 4GB have been installed but only use the 3.3-3.5GB they are limited to.

Not true. I have 1333 MHZ sticks installed in my machine, and "about this mac" Sees them as 1067.

Pentad · Apr 8, 2011, 10:52 PM

Quote:

Originally Posted by daneoni

That just proves the RAM is recognised not that it is actually running at 1600MHz. The machine could be downclocking the chips to the standard 1333MHz which is very common. Same story with machines which only support 3.5GB of RAM. They recognise when 4GB have been installed but only use the 3.3-3.5GB they are limited to.

I'm not trying to give you a hard time but that is not a good analogy. The system board does 'see' all the ram but Windows has problems with it.

Windows XP/Vista/7 32bit only will see 3.5 Gig

Windows 2003 Server 32bit (which uses an slightly modified XP Kernal) will see MORE than 4 Gig. No kidding...

So software and hardware viewing memory isn't a good analogy...

Pentad · Apr 8, 2011, 10:54 PM

Quote:

Originally Posted by JamesGorman

Not true. I have 1333 MHZ sticks installed in my machine, and "about this mac" Sees them as 1067.

I bought 1333 Corsair memory (2 x 4 Gig sticks) and my MBP does report them at 1333.

Are you sure you bought 1333? Quality memory? Reputable dealer?

Just asking... :-)

-P

NikFinn · Apr 8, 2011, 10:57 PM

Quote:

Originally Posted by Pentad

I bought 1333 Corsair memory (2 x 4 Gig sticks) and my MBP does report them at 1333.

Are you sure you bought 1333? Quality memory? Reputable dealer?

Just asking... :-)

-P

If he installed them in the machine listed in his sig, then it does not support 1333mhz RAM, hence why it is down-clocked to 1066mhz.

aznguyen316 · Apr 8, 2011, 11:06 PM

Hmm this is very interesting. Nice... too bad I just bought some 1333Mhz ram.

Also to note, if I remember correctly, only the 2.2 and 2.3 i7 support 1600Mhz ram while the 2.0 2630qm does not. Feel free to correct me if I am mistaken.

OP, can you go to your system profiler and go to the memory slot. And double check it reads as speed: 1600Mhz thank you.

Mokuro · Apr 8, 2011, 11:26 PM

My G.Skill 8GB 1333 MHz on Macbook pro 13" i7. Seems a bit faster than that 1600.

aznguyen316 · Apr 8, 2011, 11:43 PM

was yours in 32 bit or 64bit? Not sure if that affects memory but just wondering.

Mokuro · Apr 8, 2011, 11:47 PM

Quote:

Originally Posted by aznguyen316

was yours in 32 bit or 64bit? Not sure if that affects memory but just wondering.

32 bit.

mackage · Apr 9, 2011, 12:24 AM

Isn't it true that RAM cannot run any faster than your FSB? The FSB in the 2011 is 1333.

teddat · Apr 9, 2011, 12:32 AM

Quote:

Originally Posted by mackage

Isn't it true that RAM cannot run any faster than your FSB? The FSB in the 2011 is 1333.

That was my understanding too.

squeakr · Apr 9, 2011, 12:34 AM

It would only run as fast as the weakest link. Is the FSB on 1333 MHz, or is that the rating Apple gave it because that was the fastest memory available at the time (the same way that they say it only supports 8 GB of RAM as that was the largest available at the time)? I think only apple's design engineers could tell us, unless someone is privy to the internal docs (as the processor most definitely supports it).
I so want 16Gb of 1600 now!!

Icy1007 · Apr 9, 2011, 12:35 AM

Quote:

Originally Posted by mackage

Isn't it true that RAM cannot run any faster than your FSB? The FSB in the 2011 is 1333.

It was my understanding that the 2011 (and 2010 for that matter) MacBook Pro doesn't have a FSB.

daneoni · Apr 9, 2011, 12:45 AM

Quote:

Originally Posted by Pentad

I'm not trying to give you a hard time but that is not a good analogy. The system board does 'see' all the ram but Windows has problems with it.

Windows XP/Vista/7 32bit only will see 3.5 Gig

Windows 2003 Server 32bit (which uses an slightly modified XP Kernal) will see MORE than 4 Gig. No kidding...

So software and hardware viewing memory isn't a good analogy...

I'm not even talking about Windows, I'm talking OSX (which has been able to see/address more than 4GB since Panther) on Merom C2D MacBook Pros

Saw 4GB installed but never used the full 4GB...tapping out at 3.3 or so GBs

mackage · Apr 9, 2011, 12:53 AM

Quote:

Originally Posted by Icy1007

It was my understanding that the 2011 (and 2010 for that matter) MacBook Pro doesn't have a FSB.

Really? Is that even possible?

daneoni · 01:20 AM

Quote:

Originally Posted by Icy1007

It was my understanding that the 2011 (and 2010 for that matter) MacBook Pro doesn't have a FSB.

Quote:

Originally Posted by mackage

Really? Is that even possible?

They don't. Memory is directly connected to the processors and not via FSB. DMI i think it's called for Sandy Bridge whilst Arrandale used QPI

Support for 1600MHz might come down to whether Sandy Bridg architecture supports it (it does). If so, then that feature likely carries over into the 2011 MBPs.

Apr 8, 2011, 06:52 PM	#1
Hackintosh Sr. macrumors regular Join Date: Dec 2008	1600MHz works and runs at 1600 MacBook Pro 2011 Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5) Just thought I would let you guys know since I was curious. Even though our MacBooks come with 1333mhz ram, the processor is capable of 1600mhz. When I put my 1600 Kingston ram in it initialized at 1600! I used http://www.provantage.com/kingston-technology-khx1600c9s3k2-8g~7KINM1RK.htm __________________ 15" 2.7 Retina Macbook Pro 16gb iPhone 5 64gb Black
	3

Apr 8, 2011, 07:25 PM	#2
cmclaughlan macrumors member Join Date: Sep 2007	Can you show a screenshot of anything recognizing the RAM as 1600 ? Not that I don't trust you but it sounds pretty darned cool ! __________________ http://www.mclaughlan.org/kaadian
	0

Apr 8, 2011, 08:18 PM	#5
Hackintosh Sr. Thread Starter macrumors regular Join Date: Dec 2008	Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5) I know screenshots or nothing. As soon as I get home I'll post. 2-3 seconds was cut off boot. It's hard to tell speed cause I installed a vertex 3 240gb along with it __________________ 15" 2.7 Retina Macbook Pro 16gb iPhone 5 64gb Black
	0

Apr 8, 2011, 08:53 PM	#7
Hackintosh Sr. Thread Starter macrumors regular Join Date: Dec 2008	this attachment work? Attached Thumbnails __________________ 15" 2.7 Retina Macbook Pro 16gb iPhone 5 64gb Black
	0

Apr 8, 2011, 08:57 PM	#8
daneoni macrumors G3 Join Date: Mar 2006	That just proves the RAM is recognised not that it is actually running at 1600MHz. The machine could be downclocking the chips to the standard 1333MHz which is very common. Same story with machines which only support 3.5GB of RAM. They recognise when 4GB have been installed but only use the 3.3-3.5GB they are limited to. __________________ 15" MBP Core i7 \| 27" ACD \| AEBS \| 5G iPod \| iPhone 5 \| 3G Apple TV \| iPad mini
	-2

Apr 8, 2011, 07:44 PM	#4
2Turbo macrumors regular Join Date: Feb 2011	Did you notice any difference from 1333 speed?
	0

Apr 8, 2011, 09:17 PM	#9
Hackintosh Sr. Thread Starter macrumors regular Join Date: Dec 2008	Geekbench Attached Thumbnails __________________ 15" 2.7 Retina Macbook Pro 16gb iPhone 5 64gb Black
	0

Apr 8, 2011, 11:06 PM	#15
aznguyen316 macrumors 68000 Join Date: Oct 2008 Location: Tampa, FL	Hmm this is very interesting. Nice... too bad I just bought some 1333Mhz ram. Also to note, if I remember correctly, only the 2.2 and 2.3 i7 support 1600Mhz ram while the 2.0 2630qm does not. Feel free to correct me if I am mistaken. OP, can you go to your system profiler and go to the memory slot. And double check it reads as speed: 1600Mhz thank you. Attached Thumbnails __________________ iPhone 5, 32GB \| Early 2011 13" MBP My Channel for MBP videos
	0

Apr 8, 2011, 11:26 PM	#16
Mokuro macrumors newbie Join Date: Apr 2011	My G.Skill 8GB 1333 MHz on Macbook pro 13" i7. Seems a bit faster than that 1600. Attached Thumbnails
	0

Apr 8, 2011, 11:43 PM	#17
aznguyen316 macrumors 68000 Join Date: Oct 2008 Location: Tampa, FL	was yours in 32 bit or 64bit? Not sure if that affects memory but just wondering. __________________ iPhone 5, 32GB \| Early 2011 13" MBP My Channel for MBP videos
	0

Apr 9, 2011, 12:24 AM	#19
mackage macrumors 6502 Join Date: Apr 2011	Isn't it true that RAM cannot run any faster than your FSB? The FSB in the 2011 is 1333.
	0

Apr 9, 2011, 12:34 AM	#21
squeakr macrumors 65816 Join Date: Apr 2010	It would only run as fast as the weakest link. Is the FSB on 1333 MHz, or is that the rating Apple gave it because that was the fastest memory available at the time (the same way that they say it only supports 8 GB of RAM as that was the largest available at the time)? I think only apple's design engineers could tell us, unless someone is privy to the internal docs (as the processor most definitely supports it). I so want 16Gb of 1600 now!!
	0

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
thread	Thread Starter	Forum	Replies	Last Post
Resolved: Macbook Pro 13inch esata>thunderbolt adapter	maril1111	Mac Peripherals	20	Feb 15, 2012 03:37 AM
Macbook pro 13" + External Monitor vs. Macbook pro 15"	lakkadshaw	Buying Tips and Advice	21	Apr 16, 2011 08:38 PM
New macbook pro has a dent	slice4life	MacBook Pro	39	Mar 19, 2011 12:23 AM
MacBook Pro 2011 predictions	shyam09	MacBook Pro	1139	Feb 23, 2011 04:15 PM
MacBook Pro 2011 [Black Anodized Aluminum etc...]	Messy	MacBook Pro	16	Jan 23, 2011 03:57 PM