AMD EPYC 7643 vs AMD A4-3300

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CPU comparison with benchmarks


AMD EPYC 7643 CPU1 vs CPU2 AMD A4-3300
AMD EPYC 7643 AMD A4-3300

CPU comparison

AMD EPYC 7643 or AMD A4-3300 - 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 EPYC 7643 has 48 cores with 96 threads and clocks with a maximum frequency of 3.60 GHz. Up to 4096 GB of memory is supported in 8 memory channels. The AMD EPYC 7643 was released in Q1/2021.

The AMD A4-3300 has 2 cores with 2 threads and clocks with a maximum frequency of 2.50 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD A4-3300 was released in Q3/2011.
AMD EPYC (111) Family AMD A (112)
AMD EPYC 7003 (23) CPU group AMD A4-3000 (3)
3 Generation 1
Milan (Zen 3) Architecture Llano (K10)
Desktop / Server Segment Desktop / Server
AMD EPYC 7642 Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD EPYC 7643 has 48 CPU cores and can calculate 96 threads in parallel. The clock frequency of the AMD EPYC 7643 is 2.30 GHz (3.60 GHz) while the AMD A4-3300 has 2 CPU cores and 2 threads can calculate simultaneously. The clock frequency of the AMD A4-3300 is at 2.50 GHz.

AMD EPYC 7643 Characteristic AMD A4-3300
48 Cores 2
96 Threads 2
normal Core architecture normal
Yes Hyperthreading No
No Overclocking ? Yes
2.30 GHz Frequency 2.50 GHz
3.60 GHz Turbo Frequency (1 Core) --
3.40 GHz 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.

AMD EPYC 7643 Characteristic AMD A4-3300
-- AI hardware --
-- AI specifications --

Internal Graphics

The AMD EPYC 7643 or AMD A4-3300 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.

no iGPU GPU AMD Radeon HD 6410D
GPU frequency 0.44 GHz
-- GPU (Turbo) --
-- GPU Generation 3
Technology 32 nm
Max. displays 2
-- Compute units 2
-- Shader 160
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 1 GB
-- DirectX Version 11

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 AMD Radeon HD 6410D
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 Decode
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC Decode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

The AMD EPYC 7643 can use up to 4096 GB of memory in 8 memory channels. The maximum memory bandwidth is 51.2 GB/s. The AMD A4-3300 supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 25.6 GB/s.

AMD EPYC 7643 Characteristic AMD A4-3300
DDR4-3200 Memory DDR3-1600
4096 GB Max. Memory
8 (Octa Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 25.6 GB/s
Yes ECC No
-- L2 Cache --
256.00 MB L3 Cache 1.00 MB
4.0 PCIe version --
128 PCIe lanes --
252.0 GB/s PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the AMD EPYC 7643 is 240 W, while the AMD A4-3300 has a TDP of 65 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

AMD EPYC 7643 Characteristic AMD A4-3300
240 W TDP (PL1 / PBP) 65 W
-- TDP (PL2) --
-- TDP up --
225 W TDP down --
-- Tjunction max. --

Technical details

The AMD EPYC 7643 is manufactured in 7 nm and has 256.00 MB cache. The AMD A4-3300 is manufactured in 32 nm and has a 1.00 MB cache.

AMD EPYC 7643 Characteristic AMD A4-3300
7 nm Technology 32 nm
Chiplet Chip design Unknown
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions SSE3, SSE4a
SP3 Socket FM1
AMD-V, SVM Virtualization AMD-V
Yes AES-NI No
Windows 10, Linux Operating systems Windows 10, Linux
Q1/2021 Release date Q3/2011
4995 $ Release price 32 $
show more data show more data


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Here you can rate the AMD A4-3300 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 2 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.
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.60 GHz
1319 (100%)
AMD A4-3300 AMD A4-3300
2C 2T @ 2.50 GHz
266 (20%)

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.
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.40 GHz
36850 (100%)
AMD A4-3300 AMD A4-3300
2C 2T @ 2.50 GHz
423 (1%)

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 EPYC 7643 AMD EPYC 7643
48C 96T @ 3.40 GHz
76440 (100%)
AMD A4-3300 AMD A4-3300
2C 2T @ 2.50 GHz
1585 (2%)

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.
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.60 GHz
1671 (100%)
AMD A4-3300 AMD A4-3300
2C 2T @ 2.50 GHz
0 (0%)

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.
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.40 GHz
14987 (100%)
AMD A4-3300 AMD A4-3300
2C 2T @ 2.50 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.
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.60 GHz
0 (0%)
AMD A4-3300 AMD A4-3300
2C 2T @ 2.50 GHz
130 (100%)

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.
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 3.40 GHz
0 (0%)
AMD A4-3300 AMD A4-3300
2C 2T @ 2.50 GHz
230 (100%)

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 EPYC 7643 AMD EPYC 7643
@ 0.00 GHz
0 (0%)
AMD A4-3300 AMD A4-3300
AMD Radeon HD 6410D @ 0.44 GHz
142 (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.
AMD EPYC 7643 AMD EPYC 7643
48C 96T @ 2.30 GHz
0 (0%)
AMD A4-3300 AMD A4-3300
2C 2T @ 2.50 GHz
231 (100%)

Devices using this processor

AMD EPYC 7643 AMD A4-3300
Unknown Unknown

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