More on 90nm Athlon 64 CPUs

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Subject: More on 90nm Athlon 64 CPUs
Name: LED
Date: 7/9/2004 7:13:53 PM (GMT-7)
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In Reply to: 90nm Athlon 64 CPUs Info posted by LED

>The 90nm A64 is not a simple die shrink but features several enhancements, such as:

* Full SSE3 implementation
* Improved hardware data prefetch mechanism
* Increased number of writing combine buffers (D0 stepping A64's can now combine up to four non-cacheable streams compared to 2 on the C0 and CG stepping A64's)
* Improved on-die memory controller with more advanced open page policy
* On-die thermal throttling
* Black Diamond Low-K technology (slower less power hungry transistors in less used sections and faster and more power hungry transistors in frequently used sections of the cpu)

Furthermore the new D0 A64s can convert LEA intructions into ADD instructions in certain situations wich can then be executed in a single clock cycle wich should also give a performence boost in some apps.

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