Intel Core 2 Quad Q8400 vs Intel Pentium E5800

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CPU comparison with benchmarks


Intel Core 2 Quad Q8400 CPU1 vs CPU2 Intel Pentium E5800
Intel Core 2 Quad Q8400 Intel Pentium E5800

CPU comparison

In this CPU comparison, we compare the Intel Core 2 Quad Q8400 and the Intel Pentium E5800 and use benchmarks to check which processor is faster.

We compare the Intel Core 2 Quad Q8400 4 core processor released in Q2/2009 with the Intel Pentium E5800 which has 2 CPU cores and was introduced in Q4/2010.
Intel Core2 Quad (19) Family Intel Pentium (150)
Intel Core 2 Quad Q8000/Q9000 (16) CPU group Intel Pentium E5000/E6000 (13)
2 Generation 2
Yorkfield (Penryn) Architecture Wolfdale (Penryn)
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core 2 Quad Q8400 is a 4 core processor with a clock frequency of 2.66 GHz. The processor can compute 4 threads at the same time. The Intel Pentium E5800 clocks with 3.20 GHz, has 2 CPU cores and can calculate 2 threads in parallel.

Intel Core 2 Quad Q8400 Characteristic Intel Pentium E5800
4 Cores 2
4 Threads 2
normal Core architecture normal
No Hyperthreading No
No Overclocking ? Yes
2.66 GHz Frequency 3.20 GHz
-- Turbo Frequency (1 Core) --
-- Turbo Frequency (All Cores) --

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Intel Core 2 Quad Q8400 Characteristic Intel Pentium E5800
-- AI hardware --
-- AI specifications --

Internal Graphics

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

no iGPU GPU no iGPU
GPU frequency --
-- GPU (Turbo) --
-- GPU Generation --
Technology
Max. displays
-- Compute units --
-- Shader --
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
-- DirectX Version --

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

no iGPU GPU no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

Up to 16 GB of memory in a maximum of 2 memory channels is supported by the Intel Core 2 Quad Q8400, while the Intel Pentium E5800 supports a maximum of 16 GB of memory with a maximum memory bandwidth of 21.3 GB/s enabled.

Intel Core 2 Quad Q8400 Characteristic Intel Pentium E5800
DDR3-1066, DDR2-800 Memory DDR3-1333, DDR2-800
16 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
12.8 GB/s Max. Bandwidth 21.3 GB/s
No ECC No
4.00 MB L2 Cache 2.00 MB
-- L3 Cache --
-- PCIe version --
-- PCIe lanes --
-- PCIe Bandwidth --

Thermal Management

The Intel Core 2 Quad Q8400 has a TDP of 95 W. The TDP of the Intel Pentium E5800 is 65 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core 2 Quad Q8400 Characteristic Intel Pentium E5800
95 W TDP (PL1 / PBP) 65 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Intel Core 2 Quad Q8400 has 4.00 MB cache and is manufactured in 45 nm. The cache of Intel Pentium E5800 is at 2.00 MB. The processor is manufactured in 45 nm.

Intel Core 2 Quad Q8400 Characteristic Intel Pentium E5800
45 nm Technology 45 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
MMX, SSE2, SSE3, SSE4.1 ISA extensions MMX, SSE, SSE2, SSE3
LGA 775 Socket LGA 775
VT-x, VT-d Virtualization VT-x
No AES-NI No
Windows 10, Linux Operating systems Windows 10, Linux
Q2/2009 Release date Q4/2010
-- Release price --
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 3 CPU benchmarks

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core 2 Quad Q8400 Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz
369 (84%)
Intel Pentium E5800 Intel Pentium E5800
2C 2T @ 3.20 GHz
438 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core 2 Quad Q8400 Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz
1155 (100%)
Intel Pentium E5800 Intel Pentium E5800
2C 2T @ 3.20 GHz
831 (72%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core 2 Quad Q8400 Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz
2029 (100%)
Intel Pentium E5800 Intel Pentium E5800
2C 2T @ 3.20 GHz
1155 (57%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core 2 Quad Q8400 Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz
894 (100%)
Intel Pentium E5800 Intel Pentium E5800
2C 2T @ 3.20 GHz
518 (58%)

Devices using this processor

Intel Core 2 Quad Q8400 Intel Pentium E5800
Unknown Unknown

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