Phenom II X4 805 vs Phenom II X2 X640 BE
Aggregate performance score
Phenom II X4 805 outperforms Phenom II X2 X640 BE by a significant 22% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X2 X640 BE and Phenom II X4 805 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2455 | 2306 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.06 |
| Market segment | Laptop | Desktop processor |
| Series | 2x AMD Phenom II | no data |
| Power efficiency | 2.12 | 1.23 |
| Architecture codename | Champlain (2010−2011) | Deneb (2009−2011) |
| Release date | 12 May 2011 (13 years ago) | 9 February 2009 (15 years ago) |
| Launch price (MSRP) | no data | $174 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Phenom II X2 X640 BE and Phenom II X4 805 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 | 2 (Dual-core) | 4 (Quad-Core) |
| Threads | 2 | 4 |
| Base clock speed | no data | 2.5 GHz |
| Boost clock speed | 3.2 GHz | 2.5 GHz |
| Bus rate | 3600 MHz | no data |
| L1 cache | 256 KB | 128 KB (per core) |
| L2 cache | 2 MB | 512 KB (per core) |
| L3 cache | no data | 4 MB (shared) |
| Chip lithography | 45 nm | 45 nm |
| Die size | no data | 258 mm2 |
| Number of transistors | no data | 758 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Phenom II X2 X640 BE and Phenom II X4 805 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 | no data | 1 |
| Socket | S1 | AM3 |
| Power consumption (TDP) | 45 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X2 X640 BE and Phenom II X4 805. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, 3DNow!, SSE1-3A, AMD64, Enhanced Virus Protection, Virtualization | no data |
| VirusProtect | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X2 X640 BE and Phenom II X4 805 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X2 X640 BE and Phenom II X4 805. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Phenom II X2 X640 BE and Phenom II X4 805.
| PCIe version | no data | 2.0 |
Pros & cons summary
| Performance score | 1.01 | 1.23 |
| Recency | 12 May 2011 | 9 February 2009 |
| Physical cores | 2 | 4 |
| Threads | 2 | 4 |
| Power consumption (TDP) | 45 Watt | 95 Watt |
Phenom II X2 X640 BE has an age advantage of 2 years, and 111.1% lower power consumption.
Phenom II X4 805, on the other hand, has a 21.8% higher aggregate performance score, and 100% more physical cores and 100% more threads.
The Phenom II X4 805 is our recommended choice as it beats the Phenom II X2 X640 BE in performance tests.
Be aware that Phenom II X2 X640 BE is a notebook processor while Phenom II X4 805 is a desktop one.
Should you still have questions on choice between Phenom II X2 X640 BE and Phenom II X4 805, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
