AMD64 bit Stepping guide and freq.

I added this to the FAQ section as I found it useful and nothing really compared to it.


A64 CPU Models, OPN code, PR/frequency rating

Desktop A64 939
3500+: ADA3500DEP4AW 1.5V (CG rev, FF0h) <- "NewCastle 939", 512 KB L2, 2.2 GHz, x11
3800+: ADA3800DEP4AW 1.5V (CG rev, FF0h) <- "NewCastle 939", 512 KB L2, 2.4 GHz, x12

Desktop A64 754
2800+: ADA2800AEP4AP 1.5V (CO rev, F48h) <- ClawHammer, 512 KB L2, 1.8 GHz, x9 (512 KB L2 "disabled")
3000+: ADA3000AEP4AP 1.5V (CO rev, F48h) <- ClawHammer, 512 KB L2, 2.0 GHz, x10 (512 KB L2 "disabled")
3200+: ADA3200AEP5AP 1.5V (CO rev, F48h) <- ClawHammer, 1 MB L2, 2.0 GHz, x10
3400+: ADA3400AEP5AP 1.5V (CO rev, F48h) <- ClawHammer, 1 MB L2, 2.2 GHz, x11
3000+: ADA3000AEP4AR 1.5V (CG rev, F4Ah) <- ClawHammer, 512 KB L2, 2.0 GHz, x10 (512 KB L2 "disabled")
3200+: ADA3200AEP5AR 1.5V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 2.0 GHz, x10
3400+: ADA3400AEP5AR 1.5V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 2.2 GHz, x11
3700+: ADA3700AEP5AR 1.5V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 2.4 GHz, x12

2800+: ADA2800AEP4AX 1.5V (CG rev, FC0h) <- NewCastle, 512 KB L2, 1.8 GHz, x9
3000+: ADA3000AEP4AX 1.5V (CG rev, FC0h) <- NewCastle, 512 KB L2, 2.0 GHz, x10
3200+: ADA3200AEP4AX 1.5V (CG rev, FC0h) <- NewCastle, 512 KB L2, 2.2 GHz, x11
3400+: ADA3400AEP4AX 1.5V (CG rev, FC0h) <- NewCastle, 512 KB L2, 2.4 GHz, x12

Mobile A64 754 (DTR)
3000+: AMA3000BEX5AR 1.5V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 1.8 GHz, x9
3200+: AMA3200BEX5AR 1.5V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 2.0 GHz, x10
3400+: AMA3400BEX5AR 1.5V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 2.2 GHz, x11

Mobile A64 754 1.4V
2800+: AMN2800BIX5AR 1.4V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 1.6 GHz x8
3000+: AMN3000BIX5AR 1.4V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 1.8 GHz x9
3200+: AMN3200BIX5AR 1.4V (CG rev, F4Ah) <- ClawHammer, 1 MB L2, 2.0 GHz x10

Mobile A64 754 1.2V
2700+: AMD2700BQX4AX 1.2V (CG rev, FC0h) <- NewCastle, 512 KB L2, 1.6 GHz, x8
2800+: AMD2800BQX4AX 1.2V (CG rev, FC0h) <- NewCastle, 512 KB L2, 1.8 GHz, x9

A64 FX 939
FX53: ADAFX53DEP5AS 1.5V (CG rev, F7Ah) <- "ClawHammer 939", 1 MB L2, 2.4 GHz x12

A64 FX 940
FX51: ADAFX51CEP5AK 1.5V (CO rev, F58h) <- SledgeHammer, 1 MB L2, 2.2 GHz x11
FX51: ADAFX51CEP5AT 1.5V (CG rev, F5Ah) <- SledgeHammer, 1 MB L2, 2.2 GHz x11
FX53: ADAFX53CEP5AT 1.5V (CG rev, F5Ah) <- SledgeHammer, 1 MB L2, 2.4 GHz x12


The following links detail about the models (OPN) and specifications:

A64 Model (OPN) for 754, 939, FX, including desktop, mobile DTR, low voltage:
http://www.ocforums.com/showpost.php?p=2760601
http://www.amdboard.com/amd64_opn.html

A64 939 spec:
http://www.ocforums.com/showpost.php?p=2760928

A64 754 spec:
http://www.ocforums.com/showpost.php?p=2760930

A64 Mobile 754 DTR, 1.4V, 1.2V spec:
http://www.ocforums.com/showpost.php?p=2760959

A64 FX (940, 939) spec:
http://www.ocforums.com/showpost.php?p=2761277

nice info. i have this one 3000+: ADA3000AEP4AX 1.5V (CG rev, FC0h) <- NewCastle, 512 KB L2, 2.0 GHz, x10
is it a good cpu?

It's a CG Rev. Which means it's a good one to overclock.

So I take it that the Clawhammers are better than the Newcastles since they are above the NC on your list?

No, it's just a list. If you went from top to bottom as being the best, you'd see that the FX-53 is on the bottom. That would be entirely wrong.

It's just a list/guide.

I see. I'm a newb when it comes to PCs, but I'm willing to learn, so bear with me. Which would you suggest though?

Anyone know how to "re-enable" the cache on the early clawhammers?

This one to be precise "2800+: ADA2800AEP4AP 1.5V (CO rev, F48h) <- ClawHammer, 512 KB L2, 1.8 GHz, x9 (512 KB L2 "disabled")"

My brother has this one and swears that he had 1MB according to cpuz, but then a week later he noticed cpuz shows only 512k now. He doesn't know what he did, and is pretty sure he didn't just misread...

Lee Enfield said:

I see. I'm a newb when it comes to PCs, but I'm willing to learn, so bear with me. Which would you suggest though?

Click to expand...

It really depends on your budget. If you have the money get the AMD 3500+ 939 pin because it will last you longer and is a great processor.

If you don't have the $425 to throw at the 3500, then go for the 3200 Clawhammer 1mb cache. (People dispute this though and suggest to go with the Newcastle 3200 with 512kb cache.) It's all personal preference really. The 3200 1mb cache processor sells for $220 sometimes less depending on where you like to shop. TigerDirect has it for $220. A local computer shop around here has their 3200's for $249 retail box with Heatsink and fan.