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CPU

Unspecified

Athlon II X4 638

Processor

CPU cores: 4^*
CPU threads: 4^*
Thermal design power: 65 W^*

No matched benchmark results are available for this entry yet.

Processing & platform

CPU cores: 4^*
CPU threads: 4^*
Base clock: 2.7 GHz^*
CPU reference clock: 100 MHz^*
Reported CPU clock: 2.7 GHz^*
Architecture: Lynx^*
Socket / package: Reported value 1: FM1 uPGA^*
Reported value 2: AMD Socket FM1^*
Reported value 3: Socket FM1^*
Process node: 32 nm^*
Reported chip die area: 228 mm²^*
Chip/package TDP: 65 W^*
Transistors: 1,178 million^*

Memory & storage

Rated memory bandwidth: 29.90 GB/s^*

Power specifications

Thermal design power: 65 W^*

System configuration

Detailed specifications

Specifications 1 · 8 fields

Release: Feb 6th, 2012^*
Name: Athlon II X4 638^*
Codename: Llano^*
Cores: 4^*
Clock: 2.7^* GHz
Socket: Socket FM1^*
Process: 32^* nm
TDP: 65^* W

Specifications 2 · 32 fields

name: Athlon II X4 638^*
Release Date: Feb 6th, 2012^*
Part#: AD638XOJZ43GX AD638XOJGXBOX^*
Frequency: 2.7^* GHz
Base Clock: 100^* MHz
Multiplier: 27.0x^*
Multiplier Unlocked: No^*
Voltage: 1.4125^* V
Codename: Llano^*
Socket: AMD Socket FM1^*
Generation: Athlon II X4 (Llano)^*
Memory Support: DDR3^*
ECC Memory: No^*
# of Cores: 4^*
# of Threads: 4^*
SMP # CPUs: 1^*
Cache L1: 128 KB (per core)^*
Cache L2: 1 MB (per core)^*
Features: MMX, 3DNow!, SSE, SSE2, SSE3, SSE4A, AMD64, NX bit, AMD-V^*
Foundry: GlobalFoundries^*
Rated Speed: 1,866^* MT/s
Memory Bus: Dual-channel^*
Memory Bandwidth: 29.9^* GB/s
tJMax: 70°C^*
PCI-Express: Gen 2^*
Process Size: 32^* nm
Chipsets: A75, A55^*
Transistors: 1,178 million^*
Die Size: 228^* mm²
Package: µPGA^*
Market: Desktop^*
Production Status: End-of-life^*

Specifications 3 · 9 fields

Vendor: AMD^*
Product: AMD Athlon II X4 638^*
Type: CPU^*
Release Date: 2012-02-06^*
Process Size (nm): 32^* nm
TDP (W): 65^* W
Die Size (mm^2): 228^* mm²
Transistors (million): 1,178^*
Freq (MHz): 2,700^* MHz

Specifications 4 · 12 fields

opn tray: AD638XOJZ43GX^*
opn pib: AD638XOJGXBOX^*
cache l1: 128^*
cache l2: 1,024^*
first mention year: 2015^*
name: AMD Athlon II X4 638^*
base frequency: 2,700^*
tdp: 65^*
max temp: 70.1^*
socket: FM1 uPGA^*
product line: AMD Athlon II X4^*
lithography: 32^*

Specifications 5 · 10 fields

microarchitecture

Lynx^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: AMD Athlon II X4 638^*
catalogue_reference: AMD Athlon II X4 638^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

microarchitecture

Lynx^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: AMD Athlon II X4 638^*
catalogue_reference: AMD Athlon II X4 638^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

Reported core clock

2.7^* GHz

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: AMD Athlon II X4 638^*
catalogue_reference: AMD Athlon II X4 638^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Source calls this core clock; it is not relabelled as base, sustained or gaming clock.^*

Reported core clock

2.7^* GHz

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: AMD Athlon II X4 638^*
catalogue_reference: AMD Athlon II X4 638^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Source calls this core clock; it is not relabelled as base, sustained or gaming clock.^*

core count

4^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: AMD Athlon II X4 638^*
catalogue_reference: AMD Athlon II X4 638^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

core count

4^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: AMD Athlon II X4 638^*
catalogue_reference: AMD Athlon II X4 638^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

name

AMD Athlon II X4 638^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: AMD Athlon II X4 638^*
catalogue_reference: AMD Athlon II X4 638^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

name

AMD Athlon II X4 638^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: AMD Athlon II X4 638^*
catalogue_reference: AMD Athlon II X4 638^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

tdp

65^* W

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: AMD Athlon II X4 638^*
catalogue_reference: AMD Athlon II X4 638^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

tdp

65^* W

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: AMD Athlon II X4 638^*
catalogue_reference: AMD Athlon II X4 638^*
identity_scope: source-exact-processor-name^*
dataset_date: 2025-07-23^*

scope

Historical publisher declaration. Missing or conflicting observations remain unverified; no benchmark or tested performance inferred.^*

* Provisional data