Ryzen 7 3800XT vs Phenom II X2 X640 BE
Aggregate performance score
Ryzen 7 3800XT outperforms Phenom II X2 X640 BE by a whopping 1382% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X2 X640 BE and Ryzen 7 3800XT processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2420 | 462 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 21.37 |
| Market segment | Laptop | Desktop processor |
| Series | 2x AMD Phenom II | AMD Ryzen 7 |
| Architecture codename | Champlain (2010−2011) | Matisse (Zen 2) (2019−2020) |
| Release date | 12 May 2011 (13 years ago) | 16 June 2020 (4 years ago) |
| Launch price (MSRP) | no data | $399 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Phenom II X2 X640 BE and Ryzen 7 3800XT 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) | 8 (Octa-Core) |
| Threads | 2 | 16 |
| Base clock speed | no data | 3.8 GHz |
| Boost clock speed | 3.2 GHz | 4.7 GHz |
| Bus rate | 3600 MHz | no data |
| L1 cache | 256 KB | 512 KB |
| L2 cache | 2 MB | 4 MB |
| L3 cache | no data | 32 MB |
| Chip lithography | 45 nm | 7 nm, 12 nm |
| Die size | no data | 74 mm2 |
| Maximum core temperature | no data | 95 °C |
| Maximum case temperature (TCase) | no data | 95 °C |
| Number of transistors | no data | 3,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Phenom II X2 X640 BE and Ryzen 7 3800XT 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 | AM4 (LGA1331) |
| Power consumption (TDP) | 45 Watt | 105 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X2 X640 BE and Ryzen 7 3800XT. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, 3DNow!, SSE1-3A, AMD64, Enhanced Virus Protection, Virtualization | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME |
| AES-NI | - | + |
| FMA | - | + |
| AVX | - | + |
| VirusProtect | + | - |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X2 X640 BE and Ryzen 7 3800XT are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X2 X640 BE and Ryzen 7 3800XT. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4 |
| Maximum memory size | no data | 128 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 51.196 GB/s |
Peripherals
Specifications and connection of peripherals supported by Phenom II X2 X640 BE and Ryzen 7 3800XT.
| PCIe version | no data | 4.0 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
Pros & cons summary
| Performance score | 1.03 | 15.26 |
| Recency | 12 May 2011 | 16 June 2020 |
| Physical cores | 2 | 8 |
| Threads | 2 | 16 |
| Chip lithography | 45 nm | 7 nm |
| Power consumption (TDP) | 45 Watt | 105 Watt |
Phenom II X2 X640 BE has 133.3% lower power consumption.
Ryzen 7 3800XT, on the other hand, has a 1381.6% higher aggregate performance score, an age advantage of 9 years, 300% more physical cores and 700% more threads, and a 542.9% more advanced lithography process.
The Ryzen 7 3800XT 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 Ryzen 7 3800XT is a desktop one.
Should you still have questions on choice between Phenom II X2 X640 BE and Ryzen 7 3800XT, ask them in Comments section, and we shall answer.
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