1.Venice is the best core
2. most sites do tend to tell you,if you are buying now its almost bound to be venice
AMD Athlon 64 Desktop 1800 MHz
Socket 939 - 939 Pin Lidded CµPGA
1.50 Volt
max. Temp. 70°C
512 KB L2 Cache
CPUID Model F (max. 1 CPU)
Rev. CG - 0,13µm
Newcastle
ADA3000DEP4AW ADA3000AWBOX AMD Athlon™ 64 3000+ 1800Mhz Socket 939 89W
AMD Athlon 64 Desktop 1800 MHz
Socket 939 - 939 Pin Lidded CµPGA
1.40 Volt
max. Temp. 65°C
512 KB L2 Cache
CPUID Model F1 (max. 1 CPU)
Rev. D0 - 0,09µm
Winchester
ADA3000DIK4BI ADA3000BIBOX AMD Athlon™ 64 3000+ 1800Mhz Socket 939 67W
AMD Athlon 64 Desktop 1800 MHz
Socket 939 - 939 Pin Lidded CµPGA
variable Volt
variable Temp.
512 KB L2 Cache
CPUID Model 2F (max. 1 CPU)
Rev. E3 - 0,09µm
Venice
ADA3000DAA4BP ADA3000BPBOX AMD Athlon™ 64 3000+ 1800Mhz Socket 939 67W
AMD Athlon 64 Desktop 1800 MHz
Socket 939 - 939 Pin Lidded CµPGA
variable Volt
variable Temp.
512 KB L2 Cache
CPUID
Rev. E6 - 0,09µm
Venice
ADA3000DAA4BW ADA3000BPBOX AMD Athlon™ 64 3000+ 1800Mhz Socket 939 67W
so to be sure,check the opn (thats the ADA3000DAA4BW bit for your venice) these are normally printed on websites,and always appear on top of the chip.
for reference i found this info from
http://www.amdcompare.com/us-en/desktop/default.aspx
and
http://www.ocinside.de/go_e.html?http://www.ocinside.de/html/workshop/amd_a64_product_id.html