Core 2 Quad Q8400 vs Core i5-7640X

#ad 
Buy on Amazon
VS

Aggregate performance score

Core i5-7640X
2017
4 cores / 4 threads, 112 Watt
4.57
+239%

Core i5-7640X outperforms Core 2 Quad Q8400 by a whopping 239% based on our aggregate benchmark results.

Primary details

Comparing Core i5-7640X and Core 2 Quad Q8400 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking13252260
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.03no data
Market segmentDesktop processorDesktop processor
SeriesIntel Core i5no data
Power efficiency3.721.30
Architecture codenameKaby Lake-X (2017)Yorkfield (2007−2009)
Release date30 May 2017 (7 years ago)19 April 2009 (15 years ago)
Launch price (MSRP)$242no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i5-7640X and Core 2 Quad Q8400 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores4 (Quad-Core)4 (Quad-Core)
Threads44
Base clock speed4 GHz2.66 GHz
Boost clock speed4.2 GHz0.67 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/s1333 MHz
Multiplier40no data
L1 cache256 KB64 KB (per core)
L2 cache1 MB4 MB (shared)
L3 cache6 MB (shared)0 KB
Chip lithography14 nm45 nm
Die sizeno data2x 82 mm2
Maximum core temperature100 °Cno data
Maximum case temperature (TCase)72 °C71 °C
Number of transistorsno data456 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-
VID voltage rangeno data0.85V-1.3625V

Compatibility

Information on Core i5-7640X and Core 2 Quad Q8400 compatibility with other computer components: 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 configuration1 (Uniprocessor)1
SocketFCLGA2066FCLGA775,LGA775
Power consumption (TDP)112 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-7640X and Core 2 Quad Q8400. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2no data
AES-NI+-
AVX+-
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.0-
Hyper-Threading Technologyno data-
TSX+-
Idle Statesno data+
Thermal Monitoring-+
Demand Based Switchingno data-
FSB parityno data-

Security technologies

Core i5-7640X and Core 2 Quad Q8400 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-7640X and Core 2 Quad Q8400 are enumerated here.

VT-d+no data
VT-x++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-7640X and Core 2 Quad Q8400. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2666DDR1, DDR2, DDR3
Maximum memory size64 GBno data
Max memory channels2no data
Maximum memory bandwidth42.671 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardHD 630On certain motherboards (Chipset feature)

Peripherals

Specifications and connection of peripherals supported by Core i5-7640X and Core 2 Quad Q8400.

PCIe version3.02.0
PCI Express lanes16no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score 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.

i5-7640X 4.57
+239%
Core 2 Quad Q8400 1.35

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.

i5-7640X 7001
+239%
Core 2 Quad Q8400 2064

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.

i5-7640X 1777
+442%
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.

i5-7640X 5301
+494%
Core 2 Quad Q8400 893

Gaming performance

Pros & cons summary


Performance score 4.57 1.35
Recency 30 May 2017 19 April 2009
Chip lithography 14 nm 45 nm
Power consumption (TDP) 112 Watt 95 Watt

i5-7640X has a 238.5% higher aggregate performance score, an age advantage of 8 years, and a 221.4% more advanced lithography process.

Core 2 Quad Q8400, on the other hand, has 17.9% lower power consumption.

The Core i5-7640X is our recommended choice as it beats the Core 2 Quad Q8400 in performance tests.


Should you still have questions on choice between Core i5-7640X and Core 2 Quad Q8400, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i5-7640X
Core i5-7640X
Intel Core 2 Quad Q8400
Core 2 Quad Q8400

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


4 36 votes

Rate Core i5-7640X on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4 1330 votes

Rate Core 2 Quad Q8400 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Core i5-7640X or Core 2 Quad Q8400, agree or disagree with our judgements, or report an error or mismatch.