AMD Phenom II X4 905e vs 840 |
Released June, 2009
AMD Phenom II X4 905e
- 2.5 GHz
- Quad core
Reasons to buy the AMD Phenom II X4 905e
 | Much more l3 cache 6 MB | | Much more l3 cache per core 1.5 MB/core |
| | Much lower typical power consumption 52.81W | | Significantly lower annual home energy cost 15.66 $/year |
VS
Released January, 2011
AMD Phenom II X4 840
- 3.2 GHz
- Quad core
Reasons to buy the 840
| | Much higher clock speed 3.2 GHz | | Much better overclocked clock speed (Air) 3.94 GHz |
| | Much better overclocked clock speed (Water) 3.2 GHz | | Higher Maximum operating temperature 71 °C |
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VS
Differences What are the advantages of each
| |||||||
| Much more l3 cache | 6 MB | vs | 0 MB | Compared to all cpus, 6 MB l3 cache is just OK | |||
|---|---|---|---|---|---|---|---|
| Much more l3 cache per core | 1.5 MB/core | vs | 0 MB/core | Compared to all cpus, 1.5 MB/core l3 cache per core is just OK | |||
| Much lower typical power consumption | 52.81W | vs | 77.19W | More than 30% lower typical power consumption | |||
| Significantly lower annual home energy cost | 15.66 $/year | vs | 22.89 $/year | More than 30% lower annual home energy cost | |||
| Significantly lower annual commercial energy cost | 56.94 $/year | vs | 83.22 $/year | More than 30% lower annual commercial energy cost | |||
| |||||||
| Much higher clock speed | 3.2 GHz | vs | 2.5 GHz | Around 30% higher clock speed | |||
| Much better overclocked clock speed (Air) | 3.94 GHz | vs | 3.41 GHz | More than 15% better overclocked clock speed (Air) | |||
| Much better overclocked clock speed (Water) | 3.2 GHz | vs | 2.5 GHz | Around 30% better overclocked clock speed (Water) | |||
| Higher Maximum operating temperature | 71 °C | vs | 70 °C | Almost the same | |||
| Newer | Jan, 2011 | vs | Jun, 2009 | Release date over 1 years later | |||
Report a correction
Benchmarks Real world tests of Phenom II X4 905e vs 840
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
Cinebench R11.5
PassMark Data courtesy Passmark
PassMark (Single Core)
Specifications Full list of technical specs
summary | Phenom II X4 905e | vs | 840 |
|---|---|---|---|
| Clock speed | 2.5 GHz | 3.2 GHz | |
| Cores | Quad core | Quad core | |
| Socket type | |||
| AM3 | |||
| Is unlocked | No | 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 | |
power consumption | |||
| TDP | 65W | 95W | |
| Annual home energy cost | 15.66 $/year | 22.89 $/year | |
| Annual commercial energy cost | 56.94 $/year | 83.22 $/year | |
| Performance per watt | 1.17 pt/W | 1.87 pt/W | |
| Typical power consumption | 52.81W | 77.19W | |
bus | |||
| Clock speed | 2,000 MHz | 2,000 MHz | |
details | Phenom II X4 905e | vs | 840 |
|---|---|---|---|
| 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 | 0.82 - 1.25V | 0.85 - 1.4V | |
| Operating temperature | Unknown - 70°C | Unknown - 71°C | |
overclocking | |||
| Overclocked clock speed | 3.41 GHz | 3.94 GHz | |
| Overclocked clock speed (Water) | 2.5 GHz | 3.2 GHz | |
| Overclocked clock speed (Air) | 3.41 GHz | 3.94 GHz | |
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 | |
 AMD Phenom II X4 905e  Report a correction |  AMD Phenom II X4 840 Report a correction |
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