Intel Core2 Duo E8400 vs Intel Core 2 Quad Q9550

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CPU comparison with benchmarks


Intel Core2 Duo E8400 CPU1 vs CPU2 Intel Core 2 Quad Q9550
Intel Core2 Duo E8400 Intel Core 2 Quad Q9550

CPU comparison

Intel Core2 Duo E8400 or Intel Core 2 Quad Q9550 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Core2 Duo E8400 has 2 cores with 2 threads and clocks with a maximum frequency of 3.00 GHz. Up to 16 GB of memory is supported in 2 memory channels. The Intel Core2 Duo E8400 was released in Q1/2008.

The Intel Core 2 Quad Q9550 has 4 cores with 4 threads and clocks with a maximum frequency of 2.83 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The Intel Core 2 Quad Q9550 was released in Q1/2008.
Intel Core2 Duo (29) Family Intel Core2 Quad (19)
Intel Core 2 Duo E7000/E8000 (14) CPU group Intel Core 2 Quad Q8000/Q9000 (16)
2 Generation 2
Wolfdale (Penryn) Architecture Yorkfield (Penryn)
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core2 Duo E8400 is a 2 core processor with a clock frequency of 3.00 GHz. The Intel Core 2 Quad Q9550 has 4 CPU cores with a clock frequency of 2.83 GHz.

Intel Core2 Duo E8400 Characteristic Intel Core 2 Quad Q9550
2 Cores 4
2 Threads 4
normal Core architecture normal
No Hyperthreading No
Yes Overclocking ? No
3.00 GHz Frequency 2.83 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 Core2 Duo E8400 Characteristic Intel Core 2 Quad Q9550
-- AI hardware --
-- AI specifications --

Internal Graphics

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.

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

The Intel Core2 Duo E8400 supports a maximum of 16 GB of memory in 2 memory channels. The Intel Core 2 Quad Q9550 can connect up to 16 GB of memory in 2 memory channels.

Intel Core2 Duo E8400 Characteristic Intel Core 2 Quad Q9550
DDR3-1333, DDR2-1066 Memory DDR3-1066, DDR2-800
16 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
21.3 GB/s Max. Bandwidth 17.1 GB/s
No ECC No
6.00 MB L2 Cache 12.00 MB
-- L3 Cache --
-- PCIe version --
-- PCIe lanes --
-- PCIe Bandwidth --

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core2 Duo E8400 has a TDP of 65 W, that of the Intel Core 2 Quad Q9550 is 95 W.

Intel Core2 Duo E8400 Characteristic Intel Core 2 Quad Q9550
65 W TDP (PL1 / PBP) 95 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Intel Core2 Duo E8400 has a 6.00 MB cache, while the Intel Core 2 Quad Q9550 cache has a total of 12.00 MB.

Intel Core2 Duo E8400 Characteristic Intel Core 2 Quad Q9550
45 nm Technology 45 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
MMX, SSE, SSE2, SSE3, SSE 4.1 ISA extensions MMX, SSE2, SSE3, SSE4.1
LGA 775 Socket LGA 775
VT-x Virtualization VT-x, VT-d
No AES-NI No
Windows 10, Linux Operating systems Windows 10, Linux
Q1/2008 Release date Q1/2008
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Core2 Duo E8400 to help other visitors make their purchasing decisions. The average rating is 4.6 stars (11 ratings). Rate now:
Here you can rate the Intel Core 2 Quad Q9550 to help other visitors make their purchasing decisions. The average rating is 4.7 stars (6 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Core2 Duo E8400 (100%)
Intel Core 2 Quad Q9550 (98%)
⌀ Multi core performance in 3 CPU benchmarks
Intel Core2 Duo E8400 (51%)
Intel Core 2 Quad Q9550 (100%)

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 Core2 Duo E8400 Intel Core2 Duo E8400
2C 2T @ 3.00 GHz
473 (100%)
Intel Core 2 Quad Q9550 Intel Core 2 Quad Q9550
4C 4T @ 2.83 GHz
460 (97%)

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 Core2 Duo E8400 Intel Core2 Duo E8400
2C 2T @ 3.00 GHz
841 (55%)
Intel Core 2 Quad Q9550 Intel Core 2 Quad Q9550
4C 4T @ 2.83 GHz
1527 (100%)

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 Core2 Duo E8400 Intel Core2 Duo E8400
2C 2T @ 3.00 GHz
1129 (49%)
Intel Core 2 Quad Q9550 Intel Core 2 Quad Q9550
4C 4T @ 2.83 GHz
2291 (100%)

CPU-Z Benchmark 17 (Single-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 Core2 Duo E8400 Intel Core2 Duo E8400
2C 2T @ 3.00 GHz
252 (100%)
Intel Core 2 Quad Q9550 Intel Core 2 Quad Q9550
4C 4T @ 2.83 GHz
249 (99%)

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 Core2 Duo E8400 Intel Core2 Duo E8400
2C 2T @ 3.00 GHz
465 (48%)
Intel Core 2 Quad Q9550 Intel Core 2 Quad Q9550
4C 4T @ 2.83 GHz
959 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core2 Duo E8400 Intel Core2 Duo E8400
2C 2T @ 3.00 GHz
0 (0%)
Intel Core 2 Quad Q9550 Intel Core 2 Quad Q9550
4C 4T @ 2.83 GHz
435 (100%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core2 Duo E8400 Intel Core2 Duo E8400
2C 2T @ 3.00 GHz
0 (0%)
Intel Core 2 Quad Q9550 Intel Core 2 Quad Q9550
4C 4T @ 2.83 GHz
1642 (100%)

Devices using this processor

Intel Core2 Duo E8400 Intel Core 2 Quad Q9550
Unknown Unknown

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