What does Stepping imply in CPU ..

[deepakiitk]

what do the various steppings in AMD proc signify ..
viz A , B, C0 , D0 , E3 , E4 , E5 .. etc ..

tia

 

[imported_Kensai]

I'll let someone else take this.

 

[Deinonych]

Stepping is a change or revision to the processor's microcode. Think of it as a version number.

 

[n7]

E6 = teh suck for OCing (usually anyway), taht's all i know

 

[deepakiitk]

need some techinical details .. please ..
specially among CG, D0 , E3, E6 .. ?

n what does each version signify ? ..

 

[AndyHui]

The indicate progressively later versions of the processor. A stepping involves a change of the mask used to etch the processor features. Normally they are small but material tweaks in the processor design that adds features or fixes bugs.

Intel has extensive documentation on the changes regarding stepping, model numbers and family designations.

AMD's documentation hasn't always been so forthcoming, but generally AnandTech and forum members in the know will be aware of features added in the AMD processor steppings.

 

[Suspicious-Teach8788]

CG = old right? Clawhammer/Newcastle? Which? Correct me.
D0 = Winchester. 90nm, pretty good for OCing. Uses FAR less power than 130nm counterparts
E3 = Venice. 90nm adds SSE3 instructions, uses SLIGHTLY more power than Winchester (like 2 - 3W) .... 3000, 3200, 3500, 3800
E4 = San Diego, 90nm 1mb L2 cache version (Venice is only 512kb)... 3700+, 4000+, FX-55 (new ver) FX-57. I HAVE heard of a 3500+ 512kb cache version based on SD core (I guess half the cache was bad) and I have seen the CPU float around forums (not as rumors, but with actual screenies)
E4 = Manchester X2 (3800, 4200, 4600). These are NATIVE 512kb x 2 chips, not chips with half cache disabled (see Toledo)
E6 = New Venice stepping. Sucks for overclocking (well depends). I've seen good clocks and bad clocks
E6 = Toledo X2 (3800, 4200, 4400, 4600, 4800). The 512kb x 2 chips that use E6 steppings are simply 1mb versions that went bad. AMD needs to save money and so makes some Toledos into the 2x512kb version

Rgrrgrgrgr. Sucked huh

 

[deepakiitk]

thanks a ton man ..

 

[n7]

Originally posted by: DLeRium
CG = old right? Clawhammer/Newcastle? Which? Correct me.
D0 = Winchester. 90nm, pretty good for OCing. Uses FAR less power than 130nm counterparts
E3 = Venice. 90nm adds SSE3 instructions, uses SLIGHTLY more power than Winchester (like 2 - 3W) .... 3000, 3200, 3500, 3800
E4 = San Diego, 90nm 1mb L2 cache version (Venice is only 512kb)... 3700+, 4000+, FX-55 (new ver) FX-57. I HAVE heard of a 3500+ 512kb cache version based on SD core (I guess half the cache was bad) and I have seen the CPU float around forums (not as rumors, but with actual screenies)
E4 = Manchester X2 (3800, 4200, 4600). These are NATIVE 512kb x 2 chips, not chips with half cache disabled (see Toledo)
E6 = New Venice stepping. Sucks for overclocking (well depends). I've seen good clocks and bad clocks
E6 = Toledo X2 (3800, 4200, 4400, 4600, 4800). The 512kb x 2 chips that use E6 steppings are simply 1mb versions that went bad. AMD needs to save money and so makes some Toledos into the 2x512kb version

Rgrrgrgrgr. Sucked huh

:thumbsup:

Teh god of steppings has spoken!