AMD Phenom II X4 940 | AMD Athlon X4 845 | |
CPU comparisonAMD Phenom II X4 940 or AMD Athlon X4 845 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The AMD Phenom II X4 940 has 4 cores with 4 threads and clocks with a maximum frequency of 3.00 GHz. Up to GB of memory is supported in 2 memory channels. The AMD Phenom II X4 940 was released in Q1/2009. The AMD Athlon X4 845 has 4 cores with 4 threads and clocks with a maximum frequency of 3.80 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD Athlon X4 845 was released in Q1/2016. |
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AMD Phenom II (52) | Family | AMD Athlon (29) |
AMD Phenom II - 800/900 (23) | CPU group | AMD Athlon X4 (Carizzo) (2) |
4 | Generation | 2 |
Deneb (K10) | Architecture | Carizzo |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Phenom II X4 940 has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the AMD Phenom II X4 940 is 3.00 GHz while the AMD Athlon X4 845 has 4 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the AMD Athlon X4 845 is at 3.50 GHz (3.80 GHz). |
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AMD Phenom II X4 940 | Characteristic | AMD Athlon X4 845 |
4 | Cores | 4 |
4 | Threads | 4 |
normal | Core architecture | normal |
No | Hyperthreading | No |
Yes | Overclocking ? | No |
3.00 GHz | Frequency | 3.50 GHz |
-- | Turbo Frequency (1 Core) | 3.80 GHz |
-- | Turbo Frequency (All Cores) | 3.80 GHz |
Memory & PCIeThe AMD Phenom II X4 940 can use up to GB of memory in 2 memory channels. The maximum memory bandwidth is 21.3 GB/s. The AMD Athlon X4 845 supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 34.2 GB/s. |
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AMD Phenom II X4 940 | Characteristic | AMD Athlon X4 845 |
DDR3-1333, DDR2-1066 | Memory | DDR3-2133 |
Max. Memory | ||
2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
21.3 GB/s | Max. Bandwidth | 34.2 GB/s |
No | ECC | Yes |
-- | L2 Cache | -- |
6.00 MB | L3 Cache | 2.00 MB |
-- | PCIe version | 3.0 |
-- | PCIe lanes | 8 |
-- | PCIe Bandwidth | 7.9 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the AMD Phenom II X4 940 is 125 W, while the AMD Athlon X4 845 has a TDP of 65 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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AMD Phenom II X4 940 | Characteristic | AMD Athlon X4 845 |
125 W | TDP (PL1 / PBP) | 65 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe AMD Phenom II X4 940 is manufactured in 45 nm and has 6.00 MB cache. The AMD Athlon X4 845 is manufactured in 28 nm and has a 2.00 MB cache. |
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AMD Phenom II X4 940 | Characteristic | AMD Athlon X4 845 |
45 nm | Technology | 28 nm |
Unknown | Chip design | Unknown |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE3, SSE4a | ISA extensions | SSE3 |
AM2+ | Socket | FM2+ |
AMD-V | Virtualization | None |
No | AES-NI | No |
Windows 10, Linux | Operating systems | Windows 10, Linux |
Q1/2009 | Release date | Q1/2016 |
-- | Release price | 65 $ |
show more data | show more data | |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
AMD Phenom II X4 940
4C 4T @ 3.00 GHz |
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AMD Athlon X4 845
4C 4T @ 3.80 GHz |
Devices using this processor |
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AMD Phenom II X4 940 | AMD Athlon X4 845 |
Unknown | Unknown |