Athlon II X4 645: specs and benchmarks
Aggregate performance score
Athlon II X4 645 provides poor benchmark performance at 1.48% of a leader's which is a 96-core EPYC 9655P.
Summary
AMD started Athlon II X4 645 sales 21 September 2010 at a recommended price of $80. This is a Propus architecture desktop processor primarily aimed at office systems. It has 4 cores and 4 threads, and is based on 45 nm manufacturing technology, with a maximum frequency of 3.1 and a locked multiplier.
Compatibility-wise, this is AMD Socket AM3 processor with a TDP of 95 Watt. It supports DDR3 memory.
Primary details
Athlon II X4 645 processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 2169 | |
| Place by popularity | not in top-100 | |
| Cost-effectiveness evaluation | 3.30 | |
| Market segment | Desktop processor | |
| Power efficiency | 1.47 | of 100.00 (Core Ultra 7 164U) |
| Architecture codename | Propus (2009−2011) | |
| Release date | 21 September 2010 (14 years ago) | |
| Launch price (MSRP) | $80 | 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 | 4 (Quad-Core) | |
| Threads | 4 | |
| Base clock speed | 3.1 GHz | of 4.7 GHz (Ryzen 9 7900X) |
| Boost clock speed | 3.1 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 | 0 KB | of 1152 MB (EPYC 9684X) |
| Chip lithography | 45 nm | of 3 nm (Core Ultra 9 285K) |
| Die size | 169 mm2 | |
| Number of transistors | 300 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + | |
| Windows 11 compatibility | - |
Compatibility
Information on Athlon II X4 645 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 (Xeon Platinum 8454H) |
| Socket | AM3 | |
| Power consumption (TDP) | 95 Watt | of 500 Watt (Xeon 6960P) |
Memory specs
Types, maximum amount and channel number of RAM supported by Athlon II X4 645's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR3 |
Peripherals
Specifications and connection types of supported peripherals.
| PCIe version | 2.0 | of 5.0 (EPYC 9655P) |
Benchmark performance
Single-core and multi-core benchmark results of Athlon II X4 645. 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 Athlon II X4 645.
Intel equivalent
According to our data, the closest Intel alternative to Athlon II X4 645 is Celeron G3920, which is nearly equal in speed and higher by 5 positions in our ranking.
Here are some closest Intel rivals to Athlon II X4 645:
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 Athlon II X4 645, according to our PC configuration statistics.
These are the fastest graphics cards for Athlon II X4 645 in our user configuration statistics. There is a total of 3198 configurations using Athlon II X4 645 in our database.
