Will OS 10.7 (Lion) restrict C2D MBAs in any way (vs i5/i7)?

zub3qin

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Apr 10, 2007
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I'm struggling with this one - but I am not an expert.

Can anyone think of any feature/functionality or speed differences there would be between the current C2D MBA (assume 2.1 4GB RAM) and a future i7/i5 MBA with Lion? Could Lion in some way be slower or more restrictive on C2D machines?

I really want an MBA. But I don't NEED one. I have a 2008 Macbook that is my primary computer and is OK for now (although slow with beachballs often.) But I don't want to wait until next year.... I'm SO hoping it's out in June.

I don't want to get a MBP and self install a SSD (although maybe I am stupid) for fear that there will be an issue (ie the sleep/hibernate problem people are having, or maybe Lion will have an issue with it?).

Thanks for advice.
 

rkheyfets

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Dec 16, 2010
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There should no limitations on the C2D processors however obviously the i5/i7 processors will be snappier.
 

zub3qin

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Apr 10, 2007
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There should no limitations on the C2D processors however obviously the i5/i7 processors will be snappier.
Is this really the case? I mean it sounds right but... Except simple things like finder, mission control, etc... would you really have any more of a "snappy" experience with i7/i5 vs C2D?
 

rkheyfets

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Dec 16, 2010
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Is this really the case? I mean it sounds right but... Except simple things like finder, mission control, etc... would you really have any more of a "snappy" experience with i7/i5 vs C2D?
As for the more snappy feel i have no proof but even the current i7/i5 feel a bit snappier(just a bit) in 10.6.6 than my C2D, as for the no limitations it would make ZERO sense for apple to release a product the MPA in OCT and then less than a year latter with lion (pro AUG) render some features non functional on it wont happen, if i had to guess i would say the C2D wont see any limitations until 10.8 and end of life (in terms of wont upgrade to the OS) with either 10.9 or more likely 11.
 

C64

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Sep 3, 2008
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Is this really the case? I mean it sounds right but... Except simple things like finder, mission control, etc... would you really have any more of a "snappy" experience with i7/i5 vs C2D?
Check the Activity Monitor when you're doing normal stuff in OS X. The C2D is asleep for 99% most of the time. The eye candy Lion will add can easily be handled by the Air's GPU, and it will still feel snappy due to the fast SSD. Even a i7 feels sluggish with many day-to-day things if it doesn't have an SSD. And yes, it makes that much of a difference.
 

rkheyfets

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Dec 16, 2010
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Check the Activity Monitor when you're doing normal stuff in OS X. The C2D is asleep for 99% most of the time. The eye candy Lion will add can easily be handled by the Air's GPU, and it will still feel snappy due to the fast SSD. Even a i7 feels sluggish with many day-to-day things if it doesn't have an SSD. And yes, it makes that much of a difference.
100% agree with the SSD comment.
 

rkheyfets

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Dec 16, 2010
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I need to change that. I have 4 in there now, which of course it says 3 and Im assuming can only really use 3. Am I looking at an issue there as well?
I think it registers 3 instead of 4 due to a 32 bit v 64 bit issue...
also which mac mini do you have exactly is your processor a 64 bit one?
 

peeaanuut

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Sep 10, 2007
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Core 2 Duo - so Im assuming 64bit right?
Edit. And just to clarify again, I did slap in back 3GB. I have it sitting apart on my desk right now becausee I was putting in the SSD. So if I put 4GB it should read 4GB right?
 

rkheyfets

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Dec 16, 2010
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Core 2 Duo - so Im assuming 64bit right?
yes core 2 duo should be 64 bit and thus will be fine for lion,
however its odd that your mini only shows 3gb of ram.. unless you have a 32bit version of os-x on it.
is your mini a mid 2007 or early 2009 one?
 

peeaanuut

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Sep 10, 2007
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right on, thanks for the info. Guess Ill be slapping back the 4GB to et as much as I can out of it. Yeah, it came with 10.4. It has 10.6 now, or technically, Will once I set it back up.
 

rkheyfets

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Dec 16, 2010
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right on, thanks for the info. Guess Ill be slapping back the 4GB to et as much as I can out of it. Yeah, it came with 10.4. It has 10.6 now, or technically, Will once I set it back up.
i think if you force it to install a 64 bit version of os-x it should show all 4 but not 100% sure, and you welcome.
 

peeaanuut

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Sep 10, 2007
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32 bit Macs can see and use 4GB of ram just fine (but not more than that).

i5/i7 will indeed be faster than C2D.
Cant state 32bit macs as a whole. There was a difference between shared and unshared graphics in regards to how the mac handled ram. Its well documented that certain mini's could only read/use 3GB or ram and not 4.
 

phairphan

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Sep 21, 2005
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Reject Beach
None of the 2007 Minis can address more than 3 GB of RAM. This is a chipset limitation. You can install 4, but you'll only see 3 regardless of the OS version or whether it's a 32 or 64 bit OS.
 

deedas

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Dec 2, 2003
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Baltimore, Maryland
I read somewhere recently (probably arstechnica) that the i5/7 cpus will be great for when TRIM runs on 10.7. They didn't say anything about C2Ds so I don't really know what to make of it.

Either way I'm not worried about running 10.7 on my mba.
 

phairphan

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Sep 21, 2005
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will a matched pair of 2 GB sticks run better than a 2gb and a 1gb?
If by run better you mean operate in dual channel mode, I'm fairly certain they won't in the 2007 Minis. Your memory and by extension your graphics performance will take a small (emphasis on small) hit by going over 2 GB.
 
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Cabbit

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Jan 30, 2006
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i think if you force it to install a 64 bit version of os-x it should show all 4 but not 100% sure, and you welcome.
No this will not work, the old machines while having 64 bit CPU's did not have a 64 bit compatible chipset and/or efi. So these machines are essentially locked on 32 bit. This was due to there being no 64 bit mobile chipset.
 

rkheyfets

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Dec 16, 2010
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No this will not work, the old machines while having 64 bit CPU's did not have a 64 bit compatible chipset and/or efi. So these machines are essentially locked on 32 bit. This was due to there being no 64 bit mobile chipset.
Thanks i wasnt sure but i figured it was either the os or chipset limitation.