A8-7650K vs FX-4100
Aggregated performance score
A8-7650K outperforms FX-4100 by 20% based on our aggregated benchmark results.
Primary Details
Comparing FX-4100 and A8-7650K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 1943 | 1805 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-Effectiveness Evaluation | 0.24 | 0.52 |
| Market segment | Desktop processor | Desktop processor |
| Series | no data | AMD A-Series (Desktop) |
| Architecture codename | Zambezi (2011−2012) | Kaveri (2014−2015) |
| Release date | 12 October 2011 (12 years ago) | 7 January 2015 (9 years ago) |
| Launch price (MSRP) | no data | $152 |
| Current price | $28 | $49 (0.3x MSRP) |
Cost-Effectiveness Evaluation
Performance per price, higher is better.
A8-7650K has 117% better value for money than FX-4100.
Detailed Specifications
FX-4100 and A8-7650K basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 4 (Quad-Core) |
| Threads | 4 | 4 |
| Base clock speed | 3.6 GHz | 3.3 GHz |
| Boost clock speed | 3.8 GHz | 3.8 GHz |
| L1 cache | 192 KB | 256 KB |
| L2 cache | 4096 KB | 4096 KB |
| L3 cache | 8192 KB | no data |
| Chip lithography | 32 nm | 28 nm |
| Die size | 315 mm2 | 245 mm2 |
| Maximum core temperature | 71 °C | 72 °C |
| Number of transistors | 1,200 million | 2,411 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | Yes | Yes |
| P0 Vcore voltage | Min: 1.1 V - Max: 1.4125 V | no data |
Compatibility
Information on FX-4100 and A8-7650K compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 |
| Socket | AM3+ | FM2+ |
| Power consumption (TDP) | 95 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by FX-4100 and A8-7650K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | SSE1-4a, AVX, AES, FMA4, VT |
| AES-NI | + | + |
| FMA | + | + |
| AVX | + | + |
| FRTC | no data | 1 |
| FreeSync | no data | 1 |
| PowerTune | no data | - |
| DualGraphics | no data | 1 |
| TrueAudio | no data | + |
| PowerNow | no data | + |
| PowerGating | no data | + |
| Out-of-band client management | no data | + |
| VirusProtect | no data | + |
| HSA | no data | 1 |
Virtualization technologies
Virtual machine speed-up technologies supported by FX-4100 and A8-7650K are enumerated here.
| AMD-V | + | + |
| IOMMU 2.0 | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by FX-4100 and A8-7650K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3-2133 |
| Max memory channels | no data | 2 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon R7 Graphics |
| iGPU core count | no data | 6 |
| Number of pipelines | no data | 384 |
| Enduro | no data | + |
| Switchable graphics | no data | 1 |
| UVD | no data | + |
| VCE | no data | + |
Graphics interfaces
Available interfaces and connections of FX-4100 and A8-7650K integrated GPUs.
| DisplayPort | no data | + |
| HDMI | no data | + |
Graphics API support
APIs supported by FX-4100 and A8-7650K integrated GPUs, sometimes API versions are included.
| DirectX | no data | DirectX® 12 |
| Vulkan | no data | 1 |
Peripherals
Specifications and connection of peripherals supported by FX-4100 and A8-7650K.
| PCIe version | n/a | 3.0 |
| PCI Express lanes | no data | 16 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
A8-7650K outperforms FX-4100 by 20% based on our aggregated benchmark results.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Benchmark coverage: 68%
A8-7650K outperforms FX-4100 by 20% in Passmark.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
Benchmark coverage: 42%
A8-7650K outperforms FX-4100 by 1% in GeekBench 5 Single-Core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Benchmark coverage: 42%
FX-4100 outperforms A8-7650K by 1% in GeekBench 5 Multi-Core.
3DMark Fire Strike Physics
Benchmark coverage: 4%
A8-7650K outperforms FX-4100 by 3% in 3DMark Fire Strike Physics.
Pros & Cons Summary
| Performance score | 1.68 | 2.02 |
| Recency | 12 October 2011 | 7 January 2015 |
| Chip lithography | 32 nm | 28 nm |
The A8-7650K is our recommended choice as it beats the FX-4100 in performance tests.
Should you still have questions on choice between FX-4100 and A8-7650K, ask them in Comments section, and we shall answer.
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