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CPU

Intel

Intel Core 2 Quad Q9400S

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: 2.67 GHz
CPU reference clock: 333 MHz^*
Reported CPU clock: 2.666 GHz^*
L3 cache: 3 MB
Architecture: "Yorkfield-6M" (45 nm)
Socket / package: LGA 775
Manufacturing process: Intel 45nm CMOS
Process node: 45 nm^*
Reported chip die area: 82 mm²^*
Chip/package TDP: 65 W^*
Transistors: 456 million^*
Hardware threads per core: 1^*

Cache hierarchy

L2^*
Size
6 MB^*
Level
L2^*
Scope
L2 Cache^*

Compatible sockets

LGA 775

Power specifications

Thermal design power: 65 W

System configuration

Detailed specifications

Specifications 1 · 12 fields

model: Q9400S^*
clock: 2,660^*
hw nthreadspercore: 1^*
hw ncores: 4^*
tdp: 65^*
transistors: 456^*
die size: 164^*
vdd low: 0.85^*
vdd high: 1.3625^*
name Processor code name: Yorkfield^*
name Processor family: Core 2 Quad^*
l2 shared CPU cache configuration: 6,144^*

Specifications 2 · 31 fields

name: Core 2 Quad Q9400S^*
Release Date: Jan 18th, 2009^*
Part#: SLG9U^*
Frequency: 2.666^* GHz
Base Clock: 333^* MHz
Multiplier: 8.0x^*
Multiplier Unlocked: No^*
Voltage: 0.9^* V
TDP: 65^* W
Codename: Yorkfield^*
Socket: Intel Socket 775^*
Generation: Core 2 Quad (Yorkfield)^*
Memory Support: DDR1, DDR2, DDR3^*
ECC Memory: No^*
# of Cores: 4^*
# of Threads: 4^*
SMP # CPUs: 1^*
Integrated Graphics: On certain motherboards (Chipset feature)^*
Cache L1: 64 KB (per core)^*
Cache L2: 6 MB (shared)^*
Features: MMX, SSE, SSE2, SSE3, SSE4.1, EIST, Intel 64, iAMT2, VT-x, TXT^*
Foundry: Intel^*
Memory Bus: Dual-channel^*
PCI-Express: Gen 2^*
Process Size: 45^* nm
tCaseMax: 76°C^*
Transistors: 456 million^*
Die Size: 2x 82 mm²^*
Package: FC-LGA6^*
Market: Desktop^*
Production Status: End-of-life^*

Specifications 3 · 10 fields

Foundry: Intel^*
Vendor: Intel^*
Product: Intel Core 2 Quad Q9400S^*
Type: CPU^*
Release Date: 2009-01-18^*
Process Size (nm): 45^* nm
TDP (W): 65^* W
Die Size (mm^2): 82^* mm²
Transistors (million): 456^*
Freq (MHz): 2,666^* MHz

Specifications 4 · 34 fields

Recommended Customer Price

$254.00^*

Scope and conditions

source_native_row_context

Price scope: Historical source recommendation; not a current retail offer. The original currency notation is retained.^*

Total Cores

4^*

Processor Base Frequency

2.66^* GHz

Cache

6.0^* MB

Scope and conditions

source_native_row_context

Cache description: L2 Cache^*
Original declaration: 6 MB L2 Cache^*

Bus Speed

1,333^* MHz

FSB Parity

No^*

TDP

65^* W

VID Voltage Range

0.8500V-1.3625V^*

Marketing Status

Discontinued^*

Launch Date

Q1'09^*

Servicing Status

End of Servicing Lifetime^*

Embedded Options Available

No^*

Sockets Supported

LGA775^*

TCASE

76.3^* °C

Package Size

37.5mm x 37.5mm^*

Processing Die Size

164 mm2^*

# of Processing Die Transistors

456 million^*

Intel® Turbo Boost Technology ‡

No^*

Intel® Hyper-Threading Technology ‡

No^*

Intel® Virtualization Technology (VT-x) ‡

Yes^*

Intel® Virtualization Technology for Directed I/O (VT-d) ‡

Yes^*

Intel® 64 ‡

Yes^*

Instruction Set

64-bit^*

Idle States

Yes^*

Enhanced Intel SpeedStep® Technology

Yes^*

Intel® Demand Based Switching

No^*

Thermal Monitoring Technologies

Yes^*

Product Collection

Legacy Intel® Core™ Processors^*

Vertical Segment

Desktop^*

Intel® AES New Instructions

No^*

Intel® Trusted Execution Technology ‡

Yes^*

Execute Disable Bit ‡

Yes^*

Processor Number

Q9400S^*

Lithography

45^* nm

Specifications 5 · 10 fields

microarchitecture

Yorkfield^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core 2 Quad Q9400S^*
catalogue_reference: Intel Core 2 Quad Q9400S^*
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

Yorkfield^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core 2 Quad Q9400S^*
catalogue_reference: Intel Core 2 Quad Q9400S^*
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

2.66^* GHz

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core 2 Quad Q9400S^*
catalogue_reference: Intel Core 2 Quad Q9400S^*
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

2.66^* GHz

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core 2 Quad Q9400S^*
catalogue_reference: Intel Core 2 Quad Q9400S^*
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: Intel Core 2 Quad Q9400S^*
catalogue_reference: Intel Core 2 Quad Q9400S^*
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: Intel Core 2 Quad Q9400S^*
catalogue_reference: Intel Core 2 Quad Q9400S^*
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

Intel Core 2 Quad Q9400S^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core 2 Quad Q9400S^*
catalogue_reference: Intel Core 2 Quad Q9400S^*
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

Intel Core 2 Quad Q9400S^*

Scope and conditions

source_native_row_context

category: cpu^*
original_product_name: Intel Core 2 Quad Q9400S^*
catalogue_reference: Intel Core 2 Quad Q9400S^*
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: Intel Core 2 Quad Q9400S^*
catalogue_reference: Intel Core 2 Quad Q9400S^*
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: Intel Core 2 Quad Q9400S^*
catalogue_reference: Intel Core 2 Quad Q9400S^*
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