939 pin Opteron vs. Athlon 64? What's the difference?

939 pin Opteron vs. Athlon 64? What's the difference?

[Marc Perkel]

OK - I'm confused. What is the difference between an Athlon 64 and a 939 
pin Opteron? Or the difference between a 939 pin dual core Athlon and a 
939 pin dual core opteron?

I understand that the 940 pin Opterons can be used on multiple processor 
boards. But I just don't get it about using a single opteron.

Also - while I'm asking - AMD Semprtons now are 64 bit - so what's the 
difference between a 64 bit Sempton and a 64 Bit athlon?

-- 
Marc Perkel - marc@perkel.com

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Re: 939 pin Opteron vs. Athlon 64? What's the difference?

[Joel Jaeggli]

On Fri, 11 Nov 2005, Marc Perkel wrote:

> OK - I'm confused. What is the difference between an Athlon 64 and a 939 pin 
> Opteron? Or the difference between a 939 pin dual core Athlon and a 939 pin 
> dual core opteron?
>
> I understand that the 940 pin Opterons can be used on multiple processor 
> boards. But I just don't get it about using a single opteron.

939 uses unregistered memory and 940 uses registered. There are 
differences in various cores, 90nm vs 130nm. 512k vs 1mb cache, dual vs 
single core, number of cache coherrent hyper-transport links etc, but 
memory is the key difference for the socket.

> Also - while I'm asking - AMD Semprtons now are 64 bit - so what's the 
> difference between a 64 bit Sempton and a 64 Bit athlon?
>
>

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Joel Jaeggli  	       Unix Consulting 	       joelja@darkwing.uoregon.edu
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Re: 939 pin Opteron vs. Athlon 64? What's the difference?

[Stefan Smietanowski]

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Marc Perkel wrote:
> OK - I'm confused. What is the difference between an Athlon 64 and a 939
> pin Opteron? Or the difference between a 939 pin dual core Athlon and a
> 939 pin dual core opteron?
> 
> I understand that the 940 pin Opterons can be used on multiple processor
> boards. But I just don't get it about using a single opteron.
> 
> Also - while I'm asking - AMD Semprtons now are 64 bit - so what's the
> difference between a 64 bit Sempton and a 64 Bit athlon?
> 

While this is an interesting subject, I ponder what it has to do on the
Linux Kernel development list.

939 pin opterons use unregistered memory and 940 uses registered memory.

Opterons in 939 pin packaging are the same as the FX- chips basically.

64bit Sempron has less cache than 64bit Athlon.

// Stefan
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