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Discussion in 'iMac' started by sbb155, May 3, 2011.
Just wondering what your config is, and what it geekbench's at.
21.5 i5 2.7
Integer Processor integer performance 6489
Floating Point Processor floating point performance 11046
Memory Memory performance 6333
Stream Memory bandwidth performance 5226
Right so since doing that test i found out i can run OSX in 64bit... doh!!
here are the 64 bit results..
Geekbench 2.1.13 for Mac OS X x86 (64-bit)
Integer Processor integer performance 7534
Floating Point Processor floating point performance 11810
Memory Memory performance 6267
Stream Memory bandwidth performance 6019
64-bit scores for the 27" 2.7GHz i5 where roughly the same for us, in the mid 8000's.
How do you 'run' OSX in 64bit?
Glad i'm not the only one who didn't know about this!
By default it boots into 32bit but if you hold the 6 and 4 keys until the apple logo comes up then it boots into 64 bit mode.
there is a way to permanantly set it to 64 bit via a terminal command but i don't think I'll risk that yet!
sorry if i am a bit of a noob here but ...what exactly are the perks of running it in 64 bit? and are there times when doing so benefits the user from a better performance perspective?
I'm surprised the iMacs don't boot into 64-bit kernel by default. The 2011 MBP do so OTB.
Benefits of booting into 64 bit is the ability of the kernel to address more than 4GB of RAM and manage system RAM more efficiently.
ahh i see thanks...i wonder why they don't just have it run in 64 bit by default then