Intel Core 2 Quad Q8400 | AMD Phenom II X4 820 | |
CPU comparisonIn this CPU comparison, we compare the Intel Core 2 Quad Q8400 and the AMD Phenom II X4 820 and use benchmarks to check which processor is faster.
We compare the Intel Core 2 Quad Q8400 4 core processor released in Q2/2009 with the AMD Phenom II X4 820 which has 4 CPU cores and was introduced in Q3/2009. |
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Intel Core2 Quad (19) | Family | AMD Phenom II (52) |
Intel Core 2 Quad Q8000/Q9000 (16) | CPU group | AMD Phenom II - 800/900 (23) |
2 | Generation | 4 |
Yorkfield (Penryn) | Architecture | Deneb (K10) |
Desktop / Server | Segment | Desktop / Server |
-- | Predecessor | -- |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Core 2 Quad Q8400 is a 4 core processor with a clock frequency of 2.66 GHz. The processor can compute 4 threads at the same time. The AMD Phenom II X4 820 clocks with 2.80 GHz, has 4 CPU cores and can calculate 4 threads in parallel. |
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Intel Core 2 Quad Q8400 | Characteristic | AMD Phenom II X4 820 |
4 | Cores | 4 |
4 | Threads | 4 |
normal | Core architecture | normal |
No | Hyperthreading | No |
No | Overclocking ? | Yes |
2.66 GHz | Frequency | 2.80 GHz |
-- | Turbo Frequency (1 Core) | -- |
-- | Turbo Frequency (All Cores) | -- |
Memory & PCIeUp to 16 GB of memory in a maximum of 2 memory channels is supported by the Intel Core 2 Quad Q8400, while the AMD Phenom II X4 820 supports a maximum of GB of memory with a maximum memory bandwidth of 21.3 GB/s enabled. |
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Intel Core 2 Quad Q8400 | Characteristic | AMD Phenom II X4 820 |
DDR3-1066, DDR2-800 | Memory | DDR3-1333, DDR2-1066 |
16 GB | Max. Memory | |
2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
17.1 GB/s | Max. Bandwidth | 21.3 GB/s |
No | ECC | No |
4.00 MB | L2 Cache | -- |
-- | L3 Cache | 4.00 MB |
-- | PCIe version | -- |
-- | PCIe lanes | -- |
-- | PCIe Bandwidth | -- |
Thermal ManagementThe Intel Core 2 Quad Q8400 has a TDP of 95 W. The TDP of the AMD Phenom II X4 820 is 95 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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Intel Core 2 Quad Q8400 | Characteristic | AMD Phenom II X4 820 |
95 W | TDP (PL1 / PBP) | 95 W |
-- | TDP (PL2) | -- |
-- | TDP up | -- |
-- | TDP down | -- |
-- | Tjunction max. | -- |
Technical detailsThe Intel Core 2 Quad Q8400 has 4.00 MB cache and is manufactured in 45 nm. The cache of AMD Phenom II X4 820 is at 4.00 MB. The processor is manufactured in 45 nm. |
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Intel Core 2 Quad Q8400 | Characteristic | AMD Phenom II X4 820 |
45 nm | Technology | 45 nm |
Monolithic | Chip design | Unknown |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
MMX, SSE2, SSE3, SSE4.1 | ISA extensions | SSE3, SSE4a |
LGA 775 | Socket | AM3 |
VT-x, VT-d | Virtualization | AMD-V |
No | AES-NI | No |
Windows 10, Linux | Operating systems | Windows 10, Linux |
Q2/2009 | Release date | Q3/2009 |
-- | Release price | -- |
show more data | show more data | |
Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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AMD Phenom II X4 820
4C 4T @ 2.80 GHz |
Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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AMD Phenom II X4 820
4C 4T @ 2.80 GHz |
Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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AMD Phenom II X4 820
4C 4T @ 2.80 GHz |
Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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AMD Phenom II X4 820
4C 4T @ 2.80 GHz |
Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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AMD Phenom II X4 820
4C 4T @ 2.80 GHz |
Intel Core 2 Quad Q8400
4C 4T @ 2.66 GHz |
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AMD Phenom II X4 820
4C 4T @ 2.80 GHz |
Devices using this processor |
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Intel Core 2 Quad Q8400 | AMD Phenom II X4 820 |
Unknown | Unknown |