Intel Core 2 Quad Q8400s vs Intel Xeon D-1623N

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CPU comparison with benchmarks


Intel Core 2 Quad Q8400s CPU1 vs CPU2 Intel Xeon D-1623N
Intel Core 2 Quad Q8400s Intel Xeon D-1623N

CPU comparison

Intel Core 2 Quad Q8400s or Intel Xeon D-1623N - 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 Core 2 Quad Q8400s has 4 cores with 4 threads and clocks with a maximum frequency of 2.66 GHz. Up to 16 GB of memory is supported in 2 memory channels. The Intel Core 2 Quad Q8400s was released in Q2/2009.

The Intel Xeon D-1623N has 4 cores with 8 threads and clocks with a maximum frequency of 3.20 GHz. The CPU supports up to 128 GB of memory in 2 memory channels. The Intel Xeon D-1623N was released in Q2/2019.
Intel Core2 Quad (19) Family Intel Xeon D (79)
Intel Core 2 Quad Q8000/Q9000 (16) CPU group Intel Xeon D-1600 (8)
2 Generation 3
Yorkfield (Penryn) Architecture Hewitt Lake
Desktop / Server Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core 2 Quad Q8400s is a 4 core processor with a clock frequency of 2.66 GHz. The Intel Xeon D-1623N has 4 CPU cores with a clock frequency of 2.40 GHz (3.20 GHz).
Intel Core 2 Quad Q8400s Characteristic Intel Xeon D-1623N
4 Cores 4
4 Threads 8
normal Core architecture normal
No Hyperthreading Yes
No Overclocking ? No
2.66 GHz Frequency 2.40 GHz
-- Turbo Frequency (1 Core) 3.20 GHz
-- Turbo Frequency (All Cores) 2.80 GHz

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.
Intel Core 2 Quad Q8400s Characteristic Intel Xeon D-1623N
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

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 Core 2 Quad Q8400s supports a maximum of 16 GB of memory in 2 memory channels. The Intel Xeon D-1623N can connect up to 128 GB of memory in 2 memory channels.
Intel Core 2 Quad Q8400s Characteristic Intel Xeon D-1623N
DDR3-1066, DDR2-800 Memory DDR4-1866
16 GB Max. Memory 128 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
17.1 GB/s Max. Bandwidth 29.9 GB/s
No ECC Yes
4.00 MB L2 Cache 6.00 MB
-- L3 Cache --
-- PCIe version 3.0
-- PCIe lanes 32
-- PCIe Bandwidth 31.5 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core 2 Quad Q8400s has a TDP of 65 W, that of the Intel Xeon D-1623N is 35 W.
Intel Core 2 Quad Q8400s Characteristic Intel Xeon D-1623N
65 W TDP (PL1 / PBP) 35 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The Intel Core 2 Quad Q8400s has a 4.00 MB cache, while the Intel Xeon D-1623N cache has a total of 6.00 MB.
Intel Core 2 Quad Q8400s Characteristic Intel Xeon D-1623N
45 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
MMX, SSE2, SSE3, SSE4.1 ISA extensions SSE4.1, SSE4.2, AVX2
LGA 775 Socket BGA 1667
VT-x, VT-d Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q2/2009 Release date Q2/2019
-- Release price 274 $
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Devices using this processor
Intel Core 2 Quad Q8400s Intel Xeon D-1623N
Unknown Unknown

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