AMD Phenom II X4 955 vs Athlon II X4 640 |
Released November, 2009
AMD Phenom II X4 955
- 3.2 GHz
- Quad core
- Unlocked
Reasons to buy the AMD Phenom II X4 955
 | Is unlocked Yes |
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Differences What are the advantages of each
| |||||||
| Is unlocked | Yes | vs | No | Somewhat common; An unlocked multiplier allows for easier overclocking | |||
|---|---|---|---|---|---|---|---|
| |||||||
| CPUBoss is not aware of any important advantages of the Athlon II X4 640 vs the Phenom II X4 955. | |||||||
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Benchmarks Real world tests of Phenom II X4 955 vs Athlon II X4 640
GeekBench 3 (Multi-core) Data courtesy Primate Labs
GeekBench 3 (Single core) Data courtesy Primate Labs
GeekBench 3 (AES single core) Data courtesy Primate Labs
GeekBench (32-bit) Data courtesy Primate Labs
GeekBench (64-bit) Data courtesy Primate Labs
GeekBench
PassMark Data courtesy Passmark
PassMark (Single Core)
Reviews Word on the street
Specifications Full list of technical specs
summary | Phenom II X4 955 | vs | Athlon II X4 640 |
|---|---|---|---|
| Clock speed | 3.2 GHz | 3 GHz | |
| Cores | Quad core | Quad core | |
| Socket type | |||
| AM3 | |||
| Is unlocked | Yes | No | |
features | |||
| Has a NX bit | Yes | Yes | |
| Has virtualization support | Yes | Yes | |
| Instruction set extensions | |||
| SSE4a | |||
| SSE2 | |||
| MMX | |||
| SSE3 | |||
| SSE | |||
| 3DNow! | |||
| Supports dynamic frequency scaling | Yes | Yes | |
integrated graphics | |||
| GPU | None | None | |
| Label | N/A | N/A | |
| Latest DirectX | N/A | N/A | |
| Number of displays supported | N/A | N/A | |
| GPU clock speed | N/A | N/A | |
| Turbo clock speed | N/A | N/A | |
| 3DMark06 | N/A | N/A | |
details | Phenom II X4 955 | vs | Athlon II X4 640 |
|---|---|---|---|
| Architecture | x86-64 | x86-64 | |
| Threads | 4 | 4 | |
| L2 cache | 2 MB | 2 MB | |
| L2 cache per core | 0.5 MB/core | 0.5 MB/core | |
| L3 cache | 6 MB | 0 MB | |
| L3 cache per core | 1.5 MB/core | 0 MB/core | |
| Manufacture process | 45 nm | 45 nm | |
| Max CPUs | 1 | 1 | |
| Voltage range | 0.88 - 1.5V | 1.05 - 1.4V | |
| Operating temperature | Unknown - 62°C | Unknown - 71°C | |
overclocking | |||
| Overclock popularity | 259 | 36 | |
| Overclock review score | 4 | 4.5 | |
| Overclocked clock speed | 3.99 GHz | 3.57 GHz | |
| Overclocked clock speed (Water) | 4.14 GHz | 3.89 GHz | |
| PassMark (Overclocked) | 3,674.7 | 2,020.8 | |
| Overclocked clock speed (Air) | 3.99 GHz | 3.57 GHz | |
power consumption | |||
| TDP | 125W | 95W | |
| Annual home energy cost | 30.11 $/year | 22.89 $/year | |
| Annual commercial energy cost | 109.5 $/year | 83.22 $/year | |
| Performance per watt | 1.28 pt/W | 1.54 pt/W | |
| Typical power consumption | 101.56W | 77.19W | |
bus | |||
| Clock speed | 2,000 MHz | 2,000 MHz | |
 AMD Phenom II X4 955  Report a correction |  AMD Athlon II X4 640 Report a correction |
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