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Core 2 Duo Macbook Pro 64 bit capable?
- Thread starter e12a
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I read this in Macintouch
here's the user's post:
Randall Smock
Although I remain optimistic (my C2D 17" is on order) it would appear that the laptops are not 64 bit clean.....
from the developer guide for the Mac Pro: Processor is 64 bit capable.
Intel Xeon Processor
The microprocessors in the Mac Pro are Dual-Core Intel Xeon with the following features:
two dual-core, 2.66 GHz Intel Xeon processors or configure-to-order options of two dual-core 2.0 GHz or two dual-core 3.0 GHz Intel Xeon processors
4 MB shared L2 cache per processor
Intel Advanced Digital Media Boost
Connection to the North Bridge IC over a 1333 MHz frontside bus
Supports Intel Extended Memory 64 Technology (EM64T)
Processor has 64 bit addressing on its bus:
The dual, independent processor buses run at 1333 MHz and connect the processors to the North Bridge. Each front-side bus has a 64-bit wide data bus. Each processor has 64-bit addressing.
The point-to-point architecture provides each subsystem with dedicated bandwidth to main memory. The North Bridge IC implements an independent processor interface. The input clock to the processor PLL is 333 MHz.
from the developer guide for the MacBook Pro:
Processor is 64 bit capable.
Intel Core 2 Duo Microprocessor
The microprocessor in the 17-inch MacBook Pro is an Intel Core 2 Duo with a clock speed of 2.33 GHz. It has the following features:
2.33 GHz dual core processors
4 MB shared L2 cache
Intel Advanced Digital Media Boost
Connection to the North Bridge IC over a 667 MHz frontside bus
Supports Intel 64 Architecture
Processor has 32 bit addressing on its bus:
Processor Bus
The processor bus is an up-to-667 MHz bus connecting the processor to the North Bridge IC. The bus has 32-bit wide data running in both directions. The processor has 32-bit addressing.
While Apple does discuss the C2D's ability to handle 64 bit code it appears as though the proc is willing but the motherboard isn't able.
Anyone want to correct me I will be happy as can be but I believe Apple isn't touting this as 64 bit cause it isn't.
here's the user's post:
Randall Smock
Although I remain optimistic (my C2D 17" is on order) it would appear that the laptops are not 64 bit clean.....
from the developer guide for the Mac Pro: Processor is 64 bit capable.
Intel Xeon Processor
The microprocessors in the Mac Pro are Dual-Core Intel Xeon with the following features:
two dual-core, 2.66 GHz Intel Xeon processors or configure-to-order options of two dual-core 2.0 GHz or two dual-core 3.0 GHz Intel Xeon processors
4 MB shared L2 cache per processor
Intel Advanced Digital Media Boost
Connection to the North Bridge IC over a 1333 MHz frontside bus
Supports Intel Extended Memory 64 Technology (EM64T)
Processor has 64 bit addressing on its bus:
The dual, independent processor buses run at 1333 MHz and connect the processors to the North Bridge. Each front-side bus has a 64-bit wide data bus. Each processor has 64-bit addressing.
The point-to-point architecture provides each subsystem with dedicated bandwidth to main memory. The North Bridge IC implements an independent processor interface. The input clock to the processor PLL is 333 MHz.
from the developer guide for the MacBook Pro:
Processor is 64 bit capable.
Intel Core 2 Duo Microprocessor
The microprocessor in the 17-inch MacBook Pro is an Intel Core 2 Duo with a clock speed of 2.33 GHz. It has the following features:
2.33 GHz dual core processors
4 MB shared L2 cache
Intel Advanced Digital Media Boost
Connection to the North Bridge IC over a 667 MHz frontside bus
Supports Intel 64 Architecture
Processor has 32 bit addressing on its bus:
Processor Bus
The processor bus is an up-to-667 MHz bus connecting the processor to the North Bridge IC. The bus has 32-bit wide data running in both directions. The processor has 32-bit addressing.
While Apple does discuss the C2D's ability to handle 64 bit code it appears as though the proc is willing but the motherboard isn't able.
Anyone want to correct me I will be happy as can be but I believe Apple isn't touting this as 64 bit cause it isn't.
The Macbook Pro apparently has a 32bit wide data bus and 32 bit addressing.
But on that note, if the bus is only 32 bits wide - wouldn't any 64-bit data have to get chunked up anyway? To the point, negating or even slowing down most of the performance gain from 64 bit native apps?
However, though, the iMacs have the same Intel 945 chipset, correct?