AMD A8 6600K vs A4 4020 |
Released June, 2013
AMD A8 6600K
- 3.9 GHz
- Quad core
- Unlocked
Reasons to buy the AMD A8 6600K
 | Much more l2 cache 4 MB | | Is unlocked Yes |
| | Much higher clock speed 3.9 GHz | | More cores 4 |
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Released December, 2013
AMD A4 4020
- 3.2 GHz
- Dual core
Reasons to buy the A4 4020
| | Much lower typical power consumption 52.81W | | Much lower annual home energy cost 15.66 $/year |
| | Much lower annual commercial energy cost 56.94 $/year |
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Differences What are the advantages of each
| |||||||
| Much more l2 cache | 4 MB | vs | 1 MB | 4x more l2 cache; more data can be stored in the l2 cache for quick access later | |||
|---|---|---|---|---|---|---|---|
| Is unlocked | Yes | vs | No | Somewhat common; An unlocked multiplier allows for easier overclocking | |||
| Much higher clock speed | 3.9 GHz | vs | 3.2 GHz | More than 20% higher clock speed | |||
| More cores | 4 | vs | 2 | Twice as many cores; run more applications at once | |||
| More threads | 4 | vs | 2 | Twice as many threads | |||
| Much better performance per watt | 5.07 pt/W | vs | 0.73 pt/W | Around 7x better performance per watt | |||
| Much more l2 cache per core | 1 MB/core | vs | 0.5 MB/core | 2x more l2 cache per core | |||
| Significantly higher Maximum operating temperature | 74 °C | vs | 70 °C | More than 5% higher Maximum operating temperature | |||
| |||||||
| Much lower typical power consumption | 52.81W | vs | 81.25W | 35% lower typical power consumption | |||
| Much lower annual home energy cost | 15.66 $/year | vs | 24.09 $/year | 35% lower annual home energy cost | |||
| Much lower annual commercial energy cost | 56.94 $/year | vs | 87.6 $/year | 35% lower annual commercial energy cost | |||
Report a correction
Benchmarks Real world tests of A8 6600K vs A4 4020
CompuBench 1.5 (Face detection)
CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench
CompuBench 1.5 (T-Rex) Data courtesy CompuBench
PassMark Data courtesy Passmark
PassMark (Single Core)
Specifications Full list of technical specs
summary | A8 6600K | vs | A4 4020 |
|---|---|---|---|
| Clock speed | 3.9 GHz | 3.2 GHz | |
| Turbo clock speed | 4.2 GHz | 3.4 GHz | |
| Cores | Quad core | Dual core | |
| Is unlocked | Yes | No | |
features | |||
| Has a NX bit | Yes | Yes | |
| Has virtualization support | Yes | Yes | |
| Instruction set extensions | |||
| SSE4a | |||
| AVX 1.1 | |||
| SSE2 | |||
| F16C | |||
| MMX | |||
| XOP | |||
| AVX | |||
| SSE3 | |||
| SSE | |||
| BMI1 | |||
| AMD64 | |||
| SSE4.1 | |||
| FMA4 | |||
| FMA3 | |||
| SSE4.2 | |||
| ABM | |||
| CVT16 | |||
| AMD-V | |||
| Supplemental SSE3 | |||
| AES | |||
| TBM | |||
| Supports dynamic frequency scaling | Yes | Yes | |
memory controller | |||
| Memory controller | Built-in | Built-in | |
| Memory type | |||
| DDR3-1866 | |||
| DDR3 | |||
details | A8 6600K | vs | A4 4020 |
|---|---|---|---|
| Architecture | x86-64 | x86-64 | |
| Threads | 4 | 2 | |
| L2 cache | 4 MB | 1 MB | |
| L2 cache per core | 1 MB/core | 0.5 MB/core | |
| Manufacture process | 32 nm | 32 nm | |
| Max CPUs | 1 | 1 | |
| Operating temperature | Unknown - 74°C | Unknown - 70°C | |
integrated graphics | |||
| GPU | GPU | GPU | |
| Label | Radeon™ HD 8570D | Radeon HD 7480D | |
| GPU clock speed | 844 MHz | 720 MHz | |
power consumption | |||
| TDP | 100W | 65W | |
| Annual home energy cost | 24.09 $/year | 15.66 $/year | |
| Annual commercial energy cost | 87.6 $/year | 56.94 $/year | |
| Performance per watt | 5.07 pt/W | 0.73 pt/W | |
| Typical power consumption | 81.25W | 52.81W | |
 AMD A8 6600K  Report a correction |  AMD A4 4020 Report a correction |
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