AMD Athlon X4 845 | AMD Phenom II X4 840 | |
CPU comparisonIn this CPU comparison, we compare the AMD Athlon X4 845 and the AMD Phenom II X4 840 and use benchmarks to check which processor is faster.
We compare the AMD Athlon X4 845 4 core processor released in Q1/2016 with the AMD Phenom II X4 840 which has 4 CPU cores and was introduced in Q1/2011. |
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AMD Athlon (29) | Family | AMD Phenom II (52) |
AMD Athlon X4 (Carizzo) (2) | CPU group | AMD Phenom II - 840/850 (2) |
2 | Generation | 5 |
Carizzo | Architecture | Propus |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Athlon X4 845 is a 4 core processor with a clock frequency of 3.50 GHz (3.80 GHz). The processor can compute 4 threads at the same time. The AMD Phenom II X4 840 clocks with 3.20 GHz, has 4 CPU cores and can calculate 4 threads in parallel. |
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AMD Athlon X4 845 | Characteristic | AMD Phenom II X4 840 |
4 | Cores | 4 |
4 | Threads | 4 |
normal | Core architecture | normal |
No | Hyperthreading | No |
No | Overclocking ? | Yes |
3.50 GHz | Frequency | 3.20 GHz |
3.80 GHz | Turbo Frequency (1 Core) | -- |
3.80 GHz | Turbo Frequency (All Cores) | -- |
Memory & PCIeUp to GB of memory in a maximum of 2 memory channels is supported by the AMD Athlon X4 845, while the AMD Phenom II X4 840 supports a maximum of GB of memory with a maximum memory bandwidth of 21.3 GB/s enabled. |
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AMD Athlon X4 845 | Characteristic | AMD Phenom II X4 840 |
DDR3-2133 | Memory | DDR3-1333, DDR2-1066 |
Max. Memory | ||
2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
34.2 GB/s | Max. Bandwidth | 21.3 GB/s |
Yes | ECC | No |
-- | L2 Cache | -- |
2.00 MB | L3 Cache | 2.00 MB |
3.0 | PCIe version | -- |
8 | PCIe lanes | -- |
7.9 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe AMD Athlon X4 845 has a TDP of 65 W. The TDP of the AMD Phenom II X4 840 is 95 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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AMD Athlon X4 845 | Characteristic | AMD Phenom II X4 840 |
65 W | TDP (PL1 / PBP) | 95 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe AMD Athlon X4 845 has 2.00 MB cache and is manufactured in 28 nm. The cache of AMD Phenom II X4 840 is at 2.00 MB. The processor is manufactured in 45 nm. |
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AMD Athlon X4 845 | Characteristic | AMD Phenom II X4 840 |
28 nm | Technology | 45 nm |
Unknown | Chip design | Unknown |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE3 | ISA extensions | SSE3, SSE4a |
FM2+ | Socket | AM3 |
None | Virtualization | AMD-V |
No | AES-NI | No |
Windows 10, Linux | Operating systems | Windows 10, Linux |
Q1/2016 | Release date | Q1/2011 |
65 $ | Release price | -- |
show more data | show more data | |
AMD Athlon X4 845
4C 4T @ 3.80 GHz |
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AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
AMD Athlon X4 845
4C 4T @ 3.80 GHz |
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AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
AMD Athlon X4 845
4C 4T @ 3.80 GHz |
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AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
AMD Athlon X4 845
4C 4T @ 3.80 GHz |
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AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
AMD Athlon X4 845
4C 4T @ 3.80 GHz |
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AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
AMD Athlon X4 845
4C 4T @ 3.80 GHz |
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AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
AMD Athlon X4 845
4C 4T @ 3.80 GHz |
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AMD Phenom II X4 840
4C 4T @ 3.20 GHz |
Devices using this processor |
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AMD Athlon X4 845 | AMD Phenom II X4 840 |
Unknown | Unknown |