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AMD Athlon 64 Question

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97thruhiker:
I'm building a computer for my cabinet.  My motherboard supports the 939 socket of the AMD Athlon 64 series.  I have a question for those of you who have knowledge of this line of processors.  Listed within the product number is a bp or cg.  As example ADA3200BPBox and ADA3200CGBOX for the Venice core 3200.  Everything looks about the same when comparing these (series 3200, venice core, etc.)  I guess my question is what do these initials stand for.

MikeQ:
It is probably Retail vs. OEM.  One will have all the pretty box, documents, warranty etc.  The OEM is an ugly plane white box, litle doc and usually a lesser or no warranty.

And sometimes no fan/heatsink


97thruhiker:
They are both listed as retail.  Heres what Newegg has listed for both:

BP version

64 bit Support: Yes
Cooling Device: Heatsink and Fan
Hyper-Transport Support: Yes
L1 Cache: 64KB+64KB
L2 Cache: 512KB
Multimedia Instruction: MMX, SSE, SSE2, SSE3, 3DNOW! Professional
Operating Frequency: 2.0GHz
Process Type: 90 nm
Series: Athlon 64
Voltage: 1.35/1.4V

Model #: ADA3200BPBOX
Item #: N82E16819103535

CG Version

64 bit Support: Yes
Cooling Device: Heatsink and Fan
Hyper-Transport Support: Yes
L1 Cache: 64KB+64KB
L2 Cache: 512KB
Multimedia Instruction: MMX, SSE, SSE2, SSE3, 3DNOW! Professional
Operating Frequency: 2.0GHz
Process Type: 90 nm
Series: Athlon 64
Voltage: 1.35V

Model #: ADA3200CGBOX
Item #: N82E16819103602

In looking I only see a difference with the voltage.  The CG is $15.00 more.

NIVO:
CG is retail   and bpb  is PIB(processor in a box)

MikeQ:
Ah, ok.  If the specs are the same then it is probably a different processor rev or stepping.

I work with GPU development and we using a revision like A.1.0.  This would be the first rev of a chip that we fabricated.  We might find bugs with the chip or find a way to make it run faster so we "respin" the chip and it becomes A.1.1 and so on.  This may happen throughout a products life to reduce cost as well.

That would make the ADA3200BP the older E4 stepping and the ADA3200CG is the E6 stepping.

That means the CG is the newer version with whatever enhancements have been made.

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