AMD Phenom II X2 521 vs Intel Celeron 3755U

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CPU comparison with benchmarks


AMD Phenom II X2 521 CPU1 vs CPU2 Intel Celeron 3755U
AMD Phenom II X2 521 Intel Celeron 3755U

CPU comparison

AMD Phenom II X2 521 or Intel Celeron 3755U - 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 AMD Phenom II X2 521 has 2 cores with 2 threads and clocks with a maximum frequency of 3.50 GHz. Up to GB of memory is supported in 2 memory channels. The AMD Phenom II X2 521 was released in Q2/2011.

The Intel Celeron 3755U has 2 cores with 2 threads and clocks with a maximum frequency of 1.70 GHz. The CPU supports up to GB of memory in 2 memory channels. The Intel Celeron 3755U was released in Q1/2015.
AMD Phenom II Family Intel Celeron
AMD Phenom II - 500 CPU group Intel Celeron 3000
1 Generation 7
Regor (K10) Architecture Kaby Lake U
Desktop / Server Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD Phenom II X2 521 or Intel Celeron 3755U has %%kerne%% CPU cores and can calculate %%threads%% threads in parallel. The clock frequency of the AMD Phenom II X2 521 or Intel Celeron 3755U is %%core_freq_1%%. The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.

2 Cores 2
2 Threads 2
normal Core architecture normal
No Hyperthreading No
Yes Overclocking ? No
3.50 GHz Frequency 1.70 GHz
-- Turbo Frequency (1 Core) --
-- Turbo Frequency (All Cores) --

Internal Graphics

The AMD Phenom II X2 521 or Intel Celeron 3755U has integrated graphics, called iGPU for short. Specifically, the AMD Phenom II X2 521 or Intel Celeron 3755U uses the %%gpu_name%%, which has %%gpu_shader%% texture shaders and %%gpu_eus%% execution units. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

no iGPU GPU Intel HD Graphics (Broadwell GT1)
GPU frequency 0.10 GHz
GPU (Turbo) 0.80 GHz
GPU Generation 8
Technology 14 nm
Max. displays 3
Execution units 12
Shader 96
Max. GPU Memory 2 GB
DirectX Version 11.2

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

Memory & PCIe

The processor can use up to %%memory_max%% memory in %%memory_channels%% memory channels. The maximum memory bandwidth is %%memory_bandwidth%%. The memory type as well as the amount of memory can greatly affect the speed of the system.

DDR2-1066, DDR3-1333 Memory DDR3-1600
Max. Memory
2 (Dual Channel) Memory channels 2 (Dual Channel)
-- Bandwidth --
No ECC No
L2 Cache
2.00 MB L3 Cache 2.00 MB
PCIe version 2.0
PCIe lanes 12

Thermal Management

The thermal design power (TDP for short) of the processor is %%tdp%%. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. The TDP usually gives a rough idea of the actual power consumption of the CPU.

65 W TDP (PL1 / PBP) 15 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The AMD Phenom II X2 521 or Intel Celeron 3755U is made in %%fertigung%%. The smaller the manufacturing process of a CPU, the more modern and energy-efficient it is. Overall, the processor has %%cache%% cache. A large cache can greatly speed up the processor's speed in some cases such as games.

45 nm Technology 14 nm
Unknown Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE3, SSE4a ISA extensions SSE4.1, SSE4.2
AM3 Socket BGA 1168
AMD-V Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q2/2011 Release date Q1/2015
35 $ Release price --
show more data show more data



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.

AMD Phenom II X2 521 AMD Phenom II X2 521
@ 0.00 GHz
0 (0%)
Intel Celeron 3755U Intel Celeron 3755U
Intel HD Graphics (Broadwell GT1) @ 0.80 GHz
154 (100%)
Show all iGPU - FP32 Performance (Single-precision GFLOPS) results



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.

AMD Phenom II X2 521 AMD Phenom II X2 521
2C 2T @ 3.50 GHz
2253 (100%)
Intel Celeron 3755U Intel Celeron 3755U
2C 2T @ 1.70 GHz
1479 (66%)
Show all Estimated results for PassMark CPU Mark results



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.

AMD Phenom II X2 521 AMD Phenom II X2 521
2C 2T @ 3.50 GHz
92 (100%)
Intel Celeron 3755U Intel Celeron 3755U
2C 2T @ 1.70 GHz
69 (75%)
Show all Cinebench R15 (Single-Core) results



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.

AMD Phenom II X2 521 AMD Phenom II X2 521
2C 2T @ 3.50 GHz
177 (100%)
Intel Celeron 3755U Intel Celeron 3755U
2C 2T @ 1.70 GHz
133 (75%)
Show all Cinebench R15 (Multi-Core) results



Geekbench 3, 64bit (Single-Core)

Geekbench 3 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.

AMD Phenom II X2 521 AMD Phenom II X2 521
2C 2T @ 3.50 GHz
1888 (100%)
Intel Celeron 3755U Intel Celeron 3755U
2C 2T @ 1.70 GHz
1693 (90%)
Show all Geekbench 3, 64bit (Single-Core) results



Geekbench 3, 64bit (Multi-Core)

Geekbench 3 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.

AMD Phenom II X2 521 AMD Phenom II X2 521
2C 2T @ 3.50 GHz
3480 (100%)
Intel Celeron 3755U Intel Celeron 3755U
2C 2T @ 1.70 GHz
2893 (83%)
Show all Geekbench 3, 64bit (Multi-Core) results



Cinebench R11.5, 64bit (Single-Core)

Cinebench 11.5 is based on the Cinema 4D Suite, a software that is popular to generate forms and other stuff in 3D. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.

AMD Phenom II X2 521 AMD Phenom II X2 521
2C 2T @ 3.50 GHz
1.06 (100%)
Intel Celeron 3755U Intel Celeron 3755U
2C 2T @ 1.70 GHz
0.81 (76%)
Show all Cinebench R11.5, 64bit (Single-Core) results



Cinebench R11.5, 64bit (Multi-Core)

Cinebench 11.5 is based on the Cinema 4D Suite, a software that is popular to generate forms and other stuff in 3D. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.

AMD Phenom II X2 521 AMD Phenom II X2 521
2C 2T @ 3.50 GHz
2.08 (100%)
Intel Celeron 3755U Intel Celeron 3755U
2C 2T @ 1.70 GHz
1.55 (75%)
Show all Cinebench R11.5, 64bit (Multi-Core) results



Cinebench R11.5, 64bit (iGPU, OpenGL)

Cinebench 11.5 is based on the Cinema 4D Suite, a software that is popular to generate forms and other stuff in 3D. The iGPU test uses the CPU internal graphic unit to execute OpenGL commands.

AMD Phenom II X2 521 AMD Phenom II X2 521
@ 0.00 GHz
0 (0%)
Intel Celeron 3755U Intel Celeron 3755U
Intel HD Graphics (Broadwell GT1) @ 0.80 GHz
14.9 (100%)
Show all Cinebench R11.5, 64bit (iGPU, OpenGL) results



Devices using this processor

AMD Phenom II X2 521 Intel Celeron 3755U
Unknown Unknown

Leaderboards

In our leaderboards, we have clearly compiled the best processors for specific categories for you. The leaderboards are always up to date and are regularly updated by us. The best processors are selected according to popularity and speed in benchmarks as well as the price-performance ratio.


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