Intel Xeon X3440 vs Intel Celeron 3955U

Last updated:
cpumonkey @ x @cpumonkey

CPU comparison with benchmarks


Intel Xeon X3440 CPU1 vs CPU2 Intel Celeron 3955U
Intel Xeon X3440 Intel Celeron 3955U

CPU comparison

Intel Xeon X3440 or Intel Celeron 3955U - 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 Xeon X3440 has 4 cores with 8 threads and clocks with a maximum frequency of 2.93 GHz. Up to 32 GB of memory is supported in 2 memory channels. The Intel Xeon X3440 was released in Q3/2009.

The Intel Celeron 3955U has 2 cores with 2 threads and clocks with a maximum frequency of 2.00 GHz. The CPU supports up to 32 GB of memory in 2 memory channels. The Intel Celeron 3955U was released in Q4/2015.
Intel Xeon X (2) Family Intel Celeron (165)
Intel Xeon X (2) CPU group Intel Celeron 3000 (10)
0 Generation 7
Lynnfield Architecture Kaby Lake U
Desktop / Server Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Xeon X3440 is a 4 core processor with a clock frequency of 2.53 GHz (2.93 GHz). The Intel Celeron 3955U has 2 CPU cores with a clock frequency of 2.00 GHz.
Intel Xeon X3440 Characteristic Intel Celeron 3955U
4 Cores 2
8 Threads 2
normal Core architecture normal
Yes Hyperthreading No
Yes Overclocking ? No
2.53 GHz Frequency 2.00 GHz
2.93 GHz Turbo Frequency (1 Core) --
-- Turbo Frequency (All Cores) --

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 Xeon X3440 Characteristic Intel Celeron 3955U
-- 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 Intel HD Graphics 510
GPU frequency 0.30 GHz
-- GPU (Turbo) 0.90 GHz
-- GPU Generation 9
Technology 14 nm
Max. displays 3
-- Compute units 12
-- Shader 96
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 32 GB
-- DirectX Version 12.0

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 Intel HD Graphics 510
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode
No Codec h264 Decode / Encode
No Codec VP9 Decode
No Codec VP8 Decode / Encode
No Codec AV1 No
No Codec AVC Decode / Encode
No Codec VC-1 Decode
No Codec JPEG Decode

Memory & PCIe

The Intel Xeon X3440 supports a maximum of 32 GB of memory in 2 memory channels. The Intel Celeron 3955U can connect up to 32 GB of memory in 2 memory channels.
Intel Xeon X3440 Characteristic Intel Celeron 3955U
DDR3-1333, DDR3-1066, DDR3-800 Memory LPDDR3-1866, DDR4-2133, DDR3L-1600
32 GB Max. Memory 32 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
21.3 GB/s Max. Bandwidth 34.1 GB/s
Yes ECC No
8.00 MB L2 Cache --
-- L3 Cache 2.00 MB
2.0 PCIe version 3.0
16 PCIe lanes 12
8.0 GB/s PCIe Bandwidth 11.8 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Xeon X3440 has a TDP of 95 W, that of the Intel Celeron 3955U is 15 W.
Intel Xeon X3440 Characteristic Intel Celeron 3955U
95 W TDP (PL1 / PBP) 15 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 10 W
-- Tjunction max. 100 °C

Technical details

The Intel Xeon X3440 has a 8.00 MB cache, while the Intel Celeron 3955U cache has a total of 2.00 MB.
Intel Xeon X3440 Characteristic Intel Celeron 3955U
45 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2 ISA extensions SSE4.1, SSE4.2
LGA 1156 Socket --
VT-d, VT-x, VT-x EPT Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q3/2009 Release date Q4/2015
230 $ Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Xeon X3440 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:
Here you can rate the Intel Celeron 3955U to help other visitors make their purchasing decisions. The average rating is 2.0 stars (1 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 3 CPU benchmarks
Intel Xeon X3440 (100%)
Intel Celeron 3955U (85%)
⌀ Multi core performance in 4 CPU benchmarks
Intel Xeon X3440 (100%)
Intel Celeron 3955U (42%)

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 Xeon X3440 Intel Xeon X3440
4C 8T @ 2.93 GHz
668 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
514 (77%)

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 Xeon X3440 Intel Xeon X3440
4C 8T @ 2.53 GHz
2763 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
1018 (37%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Xeon X3440 Intel Xeon X3440
4C 8T @ 2.93 GHz
569 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
445 (78%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Xeon X3440 Intel Xeon X3440
4C 8T @ 2.53 GHz
2136 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
780 (37%)

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 Xeon X3440 Intel Xeon X3440
4C 8T @ 2.53 GHz
2755 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
1488 (54%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 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 Xeon X3440 Intel Xeon X3440
4C 8T @ 2.93 GHz
86 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
85 (99%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 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 Xeon X3440 Intel Xeon X3440
4C 8T @ 2.53 GHz
416 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
159 (38%)

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 Xeon X3440 Intel Xeon X3440
4C 8T @ 2.93 GHz
457 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
0 (0%)

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 Xeon X3440 Intel Xeon X3440
4C 8T @ 2.53 GHz
2256 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
0 (0%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 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 Xeon X3440 Intel Xeon X3440
4C 8T @ 2.93 GHz
178 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
0 (0%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 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 Xeon X3440 Intel Xeon X3440
4C 8T @ 2.53 GHz
885 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
0 (0%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Xeon X3440 Intel Xeon X3440
@ 0.00 GHz
0 (0%)
Intel Celeron 3955U Intel Celeron 3955U
Intel HD Graphics 510 @ 0.90 GHz
173 (100%)

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 Xeon X3440 Intel Xeon X3440
4C 8T @ 2.53 GHz
1219 (100%)
Intel Celeron 3955U Intel Celeron 3955U
2C 2T @ 2.00 GHz
0 (0%)

Devices using this processor
Intel Xeon X3440 Intel Celeron 3955U
Unknown Unknown

Popular comparisons containing this CPUs

1. Intel Core i3-3240Intel Celeron 3955U Intel Core i3-3240 vs Intel Celeron 3955U
2. Intel Celeron 3855UIntel Celeron 3955U Intel Celeron 3855U vs Intel Celeron 3955U
3. Intel Celeron 3955UIntel Celeron J1900 Intel Celeron 3955U vs Intel Celeron J1900
4. Intel Celeron 3955UIntel Core i3-4030U Intel Celeron 3955U vs Intel Core i3-4030U
5. Intel Pentium 4405UIntel Celeron 3955U Intel Pentium 4405U vs Intel Celeron 3955U
6. Intel Celeron 3955UIntel Pentium N3700 Intel Celeron 3955U vs Intel Pentium N3700
7. Intel Core i3-5005UIntel Celeron 3955U Intel Core i3-5005U vs Intel Celeron 3955U
8. Intel Celeron 3955UIntel Core i3-6100U Intel Celeron 3955U vs Intel Core i3-6100U
9. Intel Celeron 3955UIntel Pentium G4400 Intel Celeron 3955U vs Intel Pentium G4400
10. Intel Core i7-6820HKIntel Celeron 3955U Intel Core i7-6820HK vs Intel Celeron 3955U


back to index