Core 2 Quad Q8400: specs and benchmarks

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Aggregate performance score

Core 2 Quad Q8400
2009
4 cores / 4 threads, 95 Watt
1.30

Core 2 Quad Q8400 provides poor benchmark performance at 1.30% of a leader's which is a 96-core EPYC 9655P.

Summary

Intel started Core 2 Quad Q8400 sales 19 April 2009. This is an Yorkfield architecture desktop processor primarily aimed at office systems. It has 4 cores and 4 threads, and is based on 45 nm manufacturing technology, with a maximum frequency of 666 MHz and a locked multiplier.

Compatibility-wise, this is FCLGA775,LGA775 processor with a TDP of 95 Watt and a maximum temperature of 71 °C. It supports DDR1, DDR2, DDR3 memory.

Primary details

Core 2 Quad Q8400 processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in the ranking2281
Place by popularitynot in top-100
Market segmentDesktop processor
Power efficiency1.30of 100.00 (Ryzen Z1 Extreme)
Architecture codenameYorkfield (2007−2009)
Release date19 April 2009 (15 years ago)

Detailed specifications

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores4 (Quad-Core)
Threads4
Base clock speed2.66 GHzof 4.7 GHz (FX-9590)
Boost clock speed0.67 GHzof 6.2 GHz (Core i9-14900KS)
Bus rate1333 MHz
L1 cache64 KB (per core)of 80 KB (EPYC 9965)
L2 cache4 MB (shared)of 2 MB (Xeon 6980P)
L3 cache0 KBof 1152 MB (EPYC 9684X)
Chip lithography45 nmof 3 nm (Apple M3 Max 16-Core)
Die size2x 82 mm2
Maximum case temperature (TCase)71 °Cof 105 °C (Core i7-5950HQ)
Number of transistors456 millionof 135,240 million (EPYC 9684X)
64 bit support+
Windows 11 compatibility-
VID voltage range0.85V-1.3625V

Compatibility

Information on Core 2 Quad Q8400 compatibility with other computer components and devices: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration1of 8 (Opteron 842)
SocketFCLGA775,LGA775
Power consumption (TDP)95 Wattof 500 Watt (Xeon 6960P)

Technologies and extensions

Technological capabilities and additional instructions supported by Core 2 Quad Q8400. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)+
Turbo Boost Technology-
Hyper-Threading Technology-
Idle States+
Thermal Monitoring+
Demand Based Switching-
FSB parity-

Security technologies

Processor technologies aimed at improving security, for example, by protecting against hacks.

TXT-
EDB+

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

VT-x+

Memory specs

Types, maximum amount and channel number of RAM supported by Core 2 Quad Q8400's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory typesDDR1, DDR2, DDR3

Graphics specifications

General parameters of a GPU integrated into Core 2 Quad Q8400.

Integrated graphics cardOn certain motherboards (Chipset feature)

Peripherals

Specifications and connection types of supported peripherals.

PCIe version2.0of 5.0 (Core i9-12900K)

Benchmark performance

Single-core and multi-core benchmark results of Core 2 Quad Q8400. Overall benchmark performance is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Core 2 Quad Q8400 1.30

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Core 2 Quad Q8400 2068

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Core 2 Quad Q8400 328

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Core 2 Quad Q8400 897

3DMark Fire Strike Physics

Core 2 Quad Q8400 4290

Gaming performance

Closest competitors

Core 2 Quad Q8400's performance relative to its closest rivals among desktop CPUs.


A6-3650 100.77
Core 2 Quad Q8400 100
A8-3800 99.23
Core i3-2130 99.23

AMD equivalent

According to our data, the closest AMD alternative to Core 2 Quad Q8400 is Phenom II X4 830, which is nearly equal in speed and higher by 3 positions in our ranking.

Here are some closest AMD rivals to Core 2 Quad Q8400:

A6-3650 100.77
Core 2 Quad Q8400 100
A8-3800 99.23

Similar processors

Here is our recommendation of several processors that are more or less close in performance to the one reviewed.

Recommended GPUs

People consider these graphics cards to be good for Core 2 Quad Q8400, according to our PC configuration statistics.

These are the fastest graphics cards for Core 2 Quad Q8400 in our user configuration statistics. There is a total of 7981 configurations using Core 2 Quad Q8400 in our database.

RTX 4090 GeForce RTX 4090
0.6% (48/7981)
RTX 4070 Ti GeForce RTX 4070 Ti
0.04% (3/7981)
RX 7900 XTX Radeon RX 7900 XTX
0.01% (1/7981)
RTX 3090 Ti GeForce RTX 3090 Ti
0.08% (6/7981)
RTX 3080 Ti GeForce RTX 3080 Ti
0.09% (7/7981)
RTX 3090 GeForce RTX 3090
0.01% (1/7981)
RTX 4060 Ti GeForce RTX 4060 Ti
0.01% (1/7981)
RX 7700 XT Radeon RX 7700 XT
0.05% (4/7981)
RX 7700 Radeon RX 7700
0.01% (1/7981)

All comparisons with Core 2 Quad Q8400

Community ratings

Here is the rating given to the reviewed processor by our users. Let others know your opinion by rating it yourself.


4 1345 votes

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Questions & comments

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