Phenom II X2 B55: specs and benchmarks
Aggregate performance score
Phenom II X2 B55 provides poor benchmark performance at 0.74% of a leader's which is a 96-core EPYC 9655P.
Summary
AMD started Phenom II X2 B55 sales 1 October 2009 at a recommended price of $48. This is a Callisto architecture desktop processor primarily aimed at office systems. It has 2 cores and 2 threads, and is based on 45 nm manufacturing technology, with a maximum frequency of 3000 MHz and a locked multiplier.
Compatibility-wise, this is AMD Socket AM3 processor with a TDP of 80 Watt. It supports DDR3 memory.
Primary details
Phenom II X2 B55 processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 2672 | |
| Place by popularity | not in top-100 | |
| Cost-effectiveness evaluation | 2.02 | |
| Market segment | Desktop processor | |
| Power efficiency | 0.88 | of 100.00 (Ryzen Z1 Extreme) |
| Architecture codename | Callisto (2009−2010) | |
| Release date | 1 October 2009 (15 years ago) | |
| Launch price (MSRP) | $48 | of 17,906 (Xeon Platinum 8280L) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 2 (Dual-core) | |
| Threads | 2 | |
| Base clock speed | 3 GHz | of 4.7 GHz (FX-9590) |
| Boost clock speed | 3 GHz | of 6.2 GHz (Core i9-14900KS) |
| L1 cache | 128 KB (per core) | of 80 KB (EPYC 9965) |
| L2 cache | 512 KB (per core) | of 2 MB (Xeon 6980P) |
| L3 cache | 6 MB (shared) | of 1152 MB (EPYC 9684X) |
| Chip lithography | 45 nm | of 3 nm (Apple M3 Max 16-Core) |
| Die size | 258 mm2 | |
| Number of transistors | 758 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + | |
| Windows 11 compatibility | - |
Compatibility
Information on Phenom II X2 B55 compatibility with other computer components and devices: 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 | of 8 (Opteron 842) |
| Socket | AM3 | |
| Power consumption (TDP) | 80 Watt | of 500 Watt (Xeon 6960P) |
Virtualization technologies
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
| AMD-V | + |
Memory specs
Types, maximum amount and channel number of RAM supported by Phenom II X2 B55's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR3 |
Graphics specifications
General parameters of a GPU integrated into Phenom II X2 B55.
| Integrated graphics card | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection types of supported peripherals.
| PCIe version | 2.0 | of 5.0 (Core i9-12900K) |
Benchmark performance
Single-core and multi-core benchmark results of Phenom II X2 B55. Overall benchmark performance 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.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Send your test results of Phenom II X2 B55.
Intel equivalent
According to our data, the closest Intel alternative to Phenom II X2 B55 is Celeron G540, which is nearly equal in speed and lower by 3 positions in our ranking.
Here are some closest Intel rivals to Phenom II X2 B55:
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended GPUs
People consider these graphics cards to be good for Phenom II X2 B55, according to our PC configuration statistics.
These are the fastest graphics cards for Phenom II X2 B55 in our user configuration statistics. There is a total of 228 configurations using Phenom II X2 B55 in our database.
