Intel Core 2 Extreme QX9775 vs Intel Core 2 Quad Q9400

Table of Contents

Physical Specifications

Socket Intel Socket 771 Intel Socket 775
Foundry Intel Intel
Process size 45 nm 45 nm
Transistors 820 million 456 million
Die size 2x 107 mm² 2x 81 mm²
Package FC-LGA6 FC-LGA6
tCaseMax 63°C 71°C

Performance

Frequency 3.2 GHz 2.666 GHz
Turbo clock
Base clock 400 MHz 333 MHz
Multiplier 8.0x 8.0x
Multiplier unlocked Yes No
Voltage 1.35 V 1.11 V
TDP 150 W 95 W

Architecture Details

Vertical Segment Desktop Desktop
Production status End-of-life End-of-life
Release date Mar 24th, 2008 Aug 10th, 2008
Codename Yorkfield Yorkfield
Generation Core 2 Extreme Core 2 Quad
Part EU80574XL088N SLB6B
Memory support DDR2 DDR1, DDR2, DDR3 Dual-channel
ECC memory No No
PCI Express Gen 2

Cores

Total Cores 4 4
Total Threads 4 4
SMP # CPUs 1 1
Integrated graphics

Cache

Cache L1 64K (per core) 64K (per core)
Cache L2 12MB (shared) 6MB (shared)

Notes

Notes Being an Extreme Edition processor, it features an unlocked FSB multiplier that allows users to set the multiplier value above its shipped value. Unlike the QX9770, this chip uses the LGA-771 socket and is only compatible with Intel D5400XS "Skulltrail",

Features & Technologies

EIST Yes Yes
Intel 64 Yes Yes
MMX Yes Yes
SSE Yes Yes
SSE2 Yes Yes
SSE3 Yes Yes
SSE4.1 Yes Yes
SSSE3 Yes
TXT Yes
VT-x Yes Yes
iAMT2 Yes

Compare

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