[Sammelthread] AMD K8/K9 - Sockel 939 | 940 | 754

[Raiden Zero]

I've written an article about all those blanks in the Athlon 64 we had so far. Enjoy it if you like the AMD K8 architecture.

Hammer time

AMD: “It’s Hammer time” Athlon 64 codename “Hammer” became an architectural design revolution. From a single core architecture bonded by a front side bus to a northbridge which implemented a memory controller and southbridge for peripherals the paradigm has shifted to a multi-core design with an ...

docs.google.com

Great read. There is one more unicorn for Venice E6: former 940 Opteron Troy core CPUs with half of its cache being disabled.
At least that’s it what I suspect them to be.

raiden`s 25 sec 735 ms score: SuperPi - 1M with aAthlon 64 3500+ (Venice)

The Athlon 64 3500+ (Venice) @ 3324MHzscores getScoreFormatted in the SuperPi - 1M benchmark. raidenranks #null worldwide and #6 in the hardware class. Find out more at HWBOT.

hwbot.org

This one for example is CAB1E 0629BPMW.
Core is definitely 1MB single core, I already posted a picture of it‘s delidded die somewhere over here. I actually suspect all CAB1E (754/939 San Diego) are actually 940 Opteron dies.

 

[WinstonChurchill]

Gigabyte KN8NS nForce3 250 (5€)
AMD64 3000+ Newcastle 130nm S754 (2€)

Max CAS2.5 2.7v 290FSB

 

[Sparksnl]

Great read. There is one more unicorn for Venice E6: former 940 Opteron Troy core CPUs with half of its cache being disabled.
At least that’s it what I suspect them to be.

raiden`s 25 sec 735 ms score: SuperPi - 1M with aAthlon 64 3500+ (Venice)

The Athlon 64 3500+ (Venice) @ 3324MHzscores getScoreFormatted in the SuperPi - 1M benchmark. raidenranks #null worldwide and #6 in the hardware class. Find out more at HWBOT.

hwbot.org

This one for example is CAB1E 0629BPMW.
Core is definitely 1MB single core, I already posted a picture of it‘s delidded die somewhere over here. I actually suspect all CAB1E (754/939 San Diego) are actually 940 Opteron dies.

I just wonder about 1 thing. Troy is E4 where Venice is E6.
How would that be explained?

Edit:
While packaging today I found an Asus A8N SLI Deluxe. I am not sure if it is fully working (usb ports), I need to test that.
I might sell it or give it away later.

 

[Antinomy]

Great read. There is one more unicorn for Venice E6: former 940 Opteron Troy core CPUs with half of its cache being disabled.

Thank you. Yes, the CAB1E/CAB2E are an interesting case for overclocking. But since AMD decided to make then seem as normal Venice CPUs, it's almost impossible to detect them by software. I think we can identify them by K8 manufacturing ID (CPU-Z txt report shows this value) but I didn't have enough data to include this in the article. So far, all normal Venice s939 seem to have K8 ID 4.2 whereas San Diego and "Venice" CAB1E/CAB2E have 4.1.
Although, I have some info related to special steppings which I will add soon.

I just wonder about 1 thing. Troy is E4 where Venice is E6.

As your understand, AMD can write anything to CPUID registers (and not only them). Maybe the software difference between late E4 dies and E6 Venice isn't crucial so they disguized E4 core to look like E6 not to make too many OPNs (like 3500+ San Diego-512 which is typically the same as Venice 3500+ CAB1E/CAB2E). Also don't forget the Newark and Lancaster CPUs which are E5 and use CAB1E/CAB2E silicon too. So the difference might be not so strict as with single-core Toledos.
Some vendors had to make BIOS updates to fix 3700+/4000+ CF (single core Toledo) support but didn't see anything like this for "Venice" CAB1E/CAB2E.