Ryzen 7 7800X vs Phenom II X4 840
Primary details
Comparing Phenom II X4 840 and Ryzen 7 7800X processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2144 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.08 | no data |
| Market segment | Desktop processor | Desktop processor |
| Series | no data | AMD Ryzen 7 |
| Power efficiency | 1.51 | no data |
| Architecture codename | Propus (2009−2011) | Zen 4 |
| Release date | 4 January 2011 (13 years ago) | no data |
| Launch price (MSRP) | $90 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Phenom II X4 840 and Ryzen 7 7800X 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) | 8 (Octa-Core) |
| Threads | 4 | 16 |
| Base clock speed | 3.2 GHz | 4.2 GHz |
| Boost clock speed | 3.2 GHz | 5 GHz |
| L1 cache | 128 KB (per core) | 512 KB |
| L2 cache | 512 KB (per core) | 8 MB |
| L3 cache | 0 KB | 96 MB |
| Chip lithography | 45 nm | 5 nm, 6 nm |
| Die size | 169 mm2 | 71+122 mm |
| Number of transistors | 300 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | - | + |
Compatibility
Information on Phenom II X4 840 and Ryzen 7 7800X 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 | no data |
| Socket | AM3 | no data |
| Power consumption (TDP) | 95 Watt | 120 Watt |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X4 840 and Ryzen 7 7800X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
| Maximum memory size | no data | 128 GB |
Peripherals
Specifications and connection of peripherals supported by Phenom II X4 840 and Ryzen 7 7800X.
| PCIe version | 2.0 | no data |
Pros & cons summary
| Physical cores | 4 | 8 |
| Threads | 4 | 16 |
| Chip lithography | 45 nm | 5 nm |
| Power consumption (TDP) | 95 Watt | 120 Watt |
Phenom II X4 840 has 26.3% lower power consumption.
Ryzen 7 7800X, on the other hand, has 100% more physical cores and 300% more threads, and a 800% more advanced lithography process.
We couldn't decide between Phenom II X4 840 and Ryzen 7 7800X. We've got no test results to judge.
Should you still have questions on choice between Phenom II X4 840 and Ryzen 7 7800X, ask them in Comments section, and we shall answer.
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