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Specific Northbridge IC must be used for PowerPC CPU. It is impossible to use Northbridge for Intel or AMD x86 CPU with PowerPC CPU. However it is possible to use certain types of x86 Southbridge in PowerPC based motherboards. Example: VIA 686B and AMD Geode CS5536. Apple UniNorth 2 AGP used in PowerPC 74xx Based Macs
A common example of a northbridge on a PowerPC platform is in Apple's older PowerPC-based computers like the iMac G5, which utilized an IBM CPC945 Northbridge chip. According to an Apple Developer note, The Power Mac G5's northbridge chip connected to a "Mid Bridge", which then connected to a south bridge. [9]
While the machine state register found in the PowerPC architecture and the model-specific registers found in IA-32 and x86-64 architectures fulfill similar functions and the initialism "MSR" can refer to either, there are important differences that distinguish them. The machine state register, a single register, provides coarse-grained control ...
A 200 MHz IBM PowerPC 604e processor on the CPU module of an Apple Network Server 700 The PowerPC 604e was introduced in July 1996 and added a condition register unit and separate 32 KB data and instruction L1 caches among other changes to its memory subsystem and branch prediction unit, resulting in a 25% performance increase compared to its ...
The PowerPC e500 is a 32-bit microprocessor core from Freescale Semiconductor. The core is compatible with the older PowerPC Book E specification as well as the Power ISA v.2.03 . [ citation needed ] It has a dual issue, seven-stage pipeline with FPUs (from version 2 onwards), 32/32 KiB data and instruction L1 caches and 256, 512 or 1024 KiB L2 ...
The specification for Power ISA v.2.06 [12] was released in February 2009, and revised in July 2010. [13] It is based on Power ISA v.2.05 and includes extensions for the POWER7 processor and e500-mc core. One significant new feature is vector-scalar floating-point instructions . [14]
The ISA evolved into the PowerPC instruction set architecture and was deprecated in 1998 when IBM introduced the POWER3 processor that was mainly a 32/64-bit PowerPC processor but included the IBM POWER architecture for backwards compatibility. The original IBM POWER architecture was then abandoned. PowerPC evolved into the third Power ISA in 2006.
The CPU itself can withstand 200,000 to 1,000,000 Rads and temperature ranges between −55 and 125 °C. The RAD750 packaging and logic functions has a price tag in excess of US$ 200,000 [ citation needed ] : the high price is mainly due to radiation hardening revisions to the PowerPC 750 architecture and manufacturing, stringent quality ...