AMD Phenom II X2 521 | AMD Athlon II X4 860K | |
CPU comparisonIn this CPU comparison, we compare the AMD Phenom II X2 521 and the AMD Athlon II X4 860K and use benchmarks to check which processor is faster.
We compare the AMD Phenom II X2 521 2 core processor released in Q2/2011 with the AMD Athlon II X4 860K which has 4 CPU cores and was introduced in Q4/2014. |
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AMD Phenom II (52) | Family | AMD Athlon II (52) |
AMD Phenom II - 500 (2) | CPU group | AMD Athlon II X4 (Kaveri) (1) |
1 | Generation | 5 |
Regor (K10) | Architecture | Kaveri |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Phenom II X2 521 is a 2 core processor with a clock frequency of 3.50 GHz. The processor can compute 2 threads at the same time. The AMD Athlon II X4 860K clocks with 3.70 GHz (4.00 GHz), has 4 CPU cores and can calculate 4 threads in parallel. |
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AMD Phenom II X2 521 | Characteristic | AMD Athlon II X4 860K |
2 | Cores | 4 |
2 | Threads | 4 |
normal | Core architecture | normal |
No | Hyperthreading | No |
Yes | Overclocking ? | Yes |
3.50 GHz | Frequency | 3.70 GHz |
-- | Turbo Frequency (1 Core) | 4.00 GHz |
-- | Turbo Frequency (All Cores) | 4.00 GHz |
Memory & PCIeUp to GB of memory in a maximum of 2 memory channels is supported by the AMD Phenom II X2 521, while the AMD Athlon II X4 860K supports a maximum of 32 GB of memory with a maximum memory bandwidth of 34.1 GB/s enabled. |
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AMD Phenom II X2 521 | Characteristic | AMD Athlon II X4 860K |
DDR3-1333, DDR2-1066 | Memory | DDR3-2133 |
Max. Memory | 32 GB | |
2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
21.3 GB/s | Max. Bandwidth | 34.1 GB/s |
No | ECC | Yes |
-- | L2 Cache | 4.00 MB |
2.00 MB | L3 Cache | -- |
-- | PCIe version | 3.0 |
-- | PCIe lanes | 16 |
-- | PCIe Bandwidth | 15.8 GB/s |
Thermal ManagementThe AMD Phenom II X2 521 has a TDP of 65 W. The TDP of the AMD Athlon II X4 860K is 95 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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AMD Phenom II X2 521 | Characteristic | AMD Athlon II X4 860K |
65 W | TDP (PL1 / PBP) | 95 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe AMD Phenom II X2 521 has 2.00 MB cache and is manufactured in 45 nm. The cache of AMD Athlon II X4 860K is at 4.00 MB. The processor is manufactured in 32 nm. |
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AMD Phenom II X2 521 | Characteristic | AMD Athlon II X4 860K |
45 nm | Technology | 32 nm |
Unknown | Chip design | Unknown |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE3, SSE4a | ISA extensions | MMX, 3DNow!, SSE3, SSE4a |
AM3 | Socket | FM2+ |
AMD-V | Virtualization | AMD-V |
No | AES-NI | No |
Windows 10, Linux | Operating systems | Windows 10, Linux |
Q2/2011 | Release date | Q4/2014 |
35 $ | Release price | 70 $ |
show more data | show more data | |
AMD Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Athlon II X4 860K
4C 4T @ 4.00 GHz |
AMD Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Athlon II X4 860K
4C 4T @ 4.00 GHz |
AMD Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Athlon II X4 860K
4C 4T @ 4.00 GHz |
AMD Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Athlon II X4 860K
4C 4T @ 4.00 GHz |
AMD Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Athlon II X4 860K
4C 4T @ 4.00 GHz |
AMD Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Athlon II X4 860K
4C 4T @ 4.00 GHz |
AMD Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Athlon II X4 860K
4C 4T @ 4.00 GHz |
AMD Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Athlon II X4 860K
4C 4T @ 4.00 GHz |
AMD Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Athlon II X4 860K
4C 4T @ 3.70 GHz |
Devices using this processor |
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AMD Phenom II X2 521 | AMD Athlon II X4 860K |
Unknown | Unknown |