Intel Core 2 Quad Q9400: specs and benchmarks

Intel Core 2 Quad Q9400


Intel started Intel Core 2 Quad Q9400 sales on August 2008. This is 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 2666 MHz and a locked multiplier.

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

It provides poor benchmark performance at 2.33 percent of a leader's which is AMD Ryzen Threadripper PRO 3995WX.

General info

Of Core 2 Quad Q9400 processor market type (desktop or notebook), architecture and sales start time and price.

Place in performance rating
Value for money (0-100)
Market segment
Architecture codename
Release date
August 2008
Price now

Technical specs

Core 2 Quad Q9400's quantitative parameters such as cores and threads number, clocks, manufacturing process, cache size and multiplier lock state. These parameters indirectly say of Core 2 Quad Q9400's performance, but to be more precise you have to review its test results.

Number of cores
Number of threads
Base frequency
2.66 GHz
of 4.7 (FX-9590)
Maximum frequency
2.67 GHz
L1 cache
64K (per core)
of 896 (Atom C3950)
L2 cache
6 MB (shared)
Manufacturing process technology
45 nm
of 5 (Apple M1)
Die size
2x 81 mm2
Maximum core temperature
71 °C
of 110 (Atom x7-E3950)
Maximum case temperature (TCase)
71 °C
of 105 (Core i7-5557U)
Transistor count
456 million
of 19200 (Ryzen 9 3800X)
64 bit support
VID voltage range


Information on Core 2 Quad Q9400 compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one.

Max number of CPUs in a configuration
Power consumption (TDP)
95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q9400. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)
Turbo Boost
Idle States
Thermal Monitoring
Demand Based Switching
FSB parity

Security technologies

Core 2 Quad Q9400 technologies aimed at raising security, for example, by protecting against hacks.


Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q9400 are enumerated here.


Memory specs

Types, maximum amount and channel number of RAM supported by Core 2 Quad Q9400.

Supported memory types
of 4266 (Ryzen 9 4900H)

Benchmark performance

Non-gaming benchmarks performance of Core 2 Quad Q9400. Overall benchmark performance is measured in points in 0-100 range.

Overall benchmark performance




3DMark Fire Strike Physics


Game benchmarks

Let's see how good Core 2 Quad Q9400 is for gaming compared with game system requirements. Remember that sometimes official requirements may reflect real performance inaccurately.

AMD equivalent

We believe that the nearest equivalent to Core 2 Quad Q9400 from AMD is Athlon II X4 630, which is nearly equal in speed and higher by 3 positions in our rating.

User rating

Here are CPU ratings given by our user. You can rate both processors yourself.

Advices and comments

Here you can ask a question about Core 2 Quad Q9400, agree or disagree with our judgements, or report an error or mismatch.