Here's mine xp1800 from FRY's electronics , Austin, Tx.
XP1800 0322 JIUHB
Processor #1 : AMD Athlon XP (Model 8) / 605195A6
Platform : Socket A (Socket 462)
Vendor String : AuthenticAMD
CPU Type : Original OEM Processor (0)
Family : 6 (7)
Model : 8 (8)
Stepping ID : 1 (1)
Brand : ----
APIC : ----
HT Log.CPU Cnt : ----
Name String : AMD Athlon(tm)
Internal Clock : 2405.46 MHz
System Bus : 267.27 MHz DDR
System Clock : 133.64 MHz
Multiplier : 18.0
L1 I-Cache : 64K Byte
L1 D-Cache : 64K Byte
L1 T-Cache : ----
L1 Cache : ----
L2 Cache : 256K Byte
L2 Speed : 2405.46 MHz (Full)
Host Bridge : 1106:3189.00 [VIA Apollo KT400]
South Bridge : 1106:3177.00 [VIA VT8233A]
VGA Device : 10DE:0251.A2 [NVIDIA GeForce4 Ti 4400]
Memory Size : 512M Byte
James, your 1800xp was good at that time of production on the core... New cores coming out, and it seems to be doing well. I"m a proud owner of two of these little demons... testing out on 133FSB to get a good feel for when I can get it up on the nforce2 board. this one is boots up stable @ 2200MHz (133x16.5) on vcore 1.525.... not bad at all.