Intel Core 2 Quad Q8400: specs and benchmarks

Price now 34$
Games supported 64%
Intel Core 2 Quad Q8400
Intel Core 2 Quad Q8400
  • Interface
  • Core clock speed
  • Max video memory
  • Memory type
  • Memory clock speed
  • Maximum resolution
Year of release 2009
Performance 1.64


Intel started Intel Core 2 Quad Q8400 sales on 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 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


of a leader's which is AMD EPYC 9654.

AMD EPYC 9654 EPYC 9654

General info

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

Place in performance rating1984
Value for money2.73
Market segmentDesktop processor
Architecture codenameYorkfield (2007−2009)
Release dateApril 2009
(13 years old)
Current price$34 of 25332 (Xeon Platinum 8276L)
Value for money

To get the index we compare the characteristics of the processors and their cost, taking into account the cost of other processors.

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Technical specs

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)
Base clock speed2.66 GHzof 4.7 (Ryzen 9 7900X)
Boost clock speed2.67 GHzof 6 (Core i9-13900KS)
L1 cache64K (per core)of 1536 (EPYC Embedded 3401)
L2 cache4 MB (shared)of 12 (Core 2 Quad Q9550)
L3 cache0 KBof 32768 (Ryzen Threadripper 1998)
Chip lithography45 nmof 4 (Ryzen 9 7940HS)
Die size2x 81 mm2
Maximum core temperature71 °Cof 110 (Atom x7-E3950)
Maximum case temperature (TCase)71 °Cof 105 (Core i7-5950HQ)
Number of transistors456 millionof 9900000 (Ryzen 9 7845HX)
64 bit support+
Windows 11 compatibility-
Unlocked multiplier-
VID voltage range0.85V-1.3625V


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 (Xeon Platinum 8160M)
Thermal design power (TDP)95 Wattof 400 (Xeon Platinum 9282)

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)+
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.


Virtualization technologies

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


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, DDR3of 5600 (Ryzen 9 7940HS)

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.

Overall 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 1.64
  • Passmark
  • GeekBench 5 Single-Core
  • GeekBench 5 Multi-Core
  • 3DMark Fire Strike Physics


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.

Benchmark coverage: 67%

Core 2 Quad Q8400 2034

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.

Benchmark coverage: 37%

Core 2 Quad Q8400 356

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.

Benchmark coverage: 37%

Core 2 Quad Q8400 1117

3DMark Fire Strike Physics

Benchmark coverage: 4%

Core 2 Quad Q8400 4290

Is Core 2 Quad Q8400 good for gaming?

Relative perfomance

Overall Core 2 Quad Q8400 performance compared to nearest competitors among desktop CPUs.

Core 2 Quad Q8400 AMD equivalent

We believe that the nearest equivalent to Core 2 Quad Q8400 from AMD is Phenom II X4 920, which is nearly equal in speed and lower by 1 position in our rating.

AMD Phenom II X4 920 Phenom II X4 920

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

Intel Core 2 Quad Q8400 100
AMD A6-3650 98.78
AMD A8-3800 96.95

Similar processors

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

AMD Phenom II X4 920 Phenom II X4 920
Intel Core i5-655K Core i5 655K
Intel Core i3-2102 Core i3 2102
Intel Core 2 Quad Q9505 Core 2 Quad Q9505
AMD A6-3650 A6 3650
Intel Core i3-2130 Core i3 2130

Best GPUs for Core 2 Quad Q8400

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 4955 configurations based on Core 2 Quad Q8400 in our database.

NVIDIA GeForce RTX 4090 GeForce RTX 4090
0.08% (4/4955)
NVIDIA GeForce RTX 3090 Ti GeForce RTX 3090 Ti
0.1% (6/4955)
NVIDIA GeForce RTX 3080 Ti GeForce RTX 3080 Ti
0.2% (10/4955)
NVIDIA GeForce RTX 3090 GeForce RTX 3090
0.2% (11/4955)
AMD Radeon RX 6900 XT Radeon RX 6900 XT
0.02% (1/4955)
NVIDIA GeForce RTX 3070 GeForce RTX 3070
0.02% (1/4955)
NVIDIA GeForce RTX 2080 Ti GeForce RTX 2080 Ti
0.06% (3/4955)
NVIDIA GeForce RTX 3060 Ti GeForce RTX 3060 Ti
0.02% (1/4955)
NVIDIA Quadro RTX 8000 Quadro RTX 8000
0.04% (2/4955)
AMD Radeon RX 6700 XT Radeon RX 6700 XT
0.02% (1/4955)

User rating

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

4.1 630 ratings

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Questions and comments

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