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AMD K8L info & rumour mill

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Here's a nice one!
And INQ rumours and more rumours
The K8L 4X4 approach official AMD info
Hyper Transport 3 (HT3) rumours from France
Some AMD slides
From Dailytech
AMD keynotes resumed
Article at Pure Overclock on K8L

* K8 revision F has 3 complex decoders, the rev G will have 4 (like Conroe)

* 32 bytes prefetch (instead of 16 bytes on K8-F), an obvious step with the added SSE number crunching power.

* OOO, or out-of-order L2 read/write buffer that expedites data neeeded for execution, equipped with an out-of-order load/store buffer (duh!)

* 65nm SOI (we knew that, didn't we?)

* Pacifica virtualization

* Presidio

* Possibility of integrating a co-processor

* Surprisingly robust DDR-2 controller with an improved Crossbar and Arbitrator (???)

* Everything else looks the same though, which means the same 3 INT, 3 AGU, and most importantly the same 3 FPU/SSE units which can deliver 2 x 64 bit results per clock cycle peak (*** This seems totally wrong ***)

* It has a shared expandable L3 cache

* Quad Core capability

* Per core voltage control

* The new core will support 48-bit addressing and 1GB pages

* Hyper Transport 3.0 (4x 16 bit links instead of 3 x 16 bit, which will give 2.6 Ghz and up to 41.6 GB/s bandwidth as opposed to 1.4Ghz and 22.4 GB/s on HT2)

* DICE (Dynamic Independent Core Engagement): Enables cores to be independently managed to save energy / heat dissimation, next step from Cool 'n' Quiet (?)).

* DDR3 is in the wings when the spec 'settles down' (support for DDR3 ?)

* RAS, another area where AMD is sorely lacking. It is addressing the major sore points with support for memory mirroring, data poisoning support, and HT retry.

* It is doing the obvious doubling of SSE/FP resources, old news now (meaning 128 bit instead of 64 bit, AMD says DOUBLING of the FPU calculation power)

* Added instructions; starting with the bit manipulation instructions LZCNT and POPCNT. It also added SSE extensions EXTRQ/INSERTQ and MOVNTSD/MOVNTSS. No word on SSE4 though.
 
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