Intel Core i5-2500S vs Intel Core 2 Quad Q8400s
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CPU comparison with benchmarks
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| Intel Core i5-2500S | Intel Core 2 Quad Q8400s | |
CPU comparisonIntel Core i5-2500S or Intel Core 2 Quad Q8400s - 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 Intel Core i5-2500S has 4 cores with 4 threads and clocks with a maximum frequency of 3.70 GHz. Up to 32 GB of memory is supported in 2 memory channels. The Intel Core i5-2500S was released in Q1/2011. The Intel Core 2 Quad Q8400s has 4 cores with 4 threads and clocks with a maximum frequency of 2.66 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The Intel Core 2 Quad Q8400s was released in Q2/2009. |
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| Intel Core i5 (331) | Family | Intel Core2 Quad (19) |
| Intel Core i 2000 (28) | CPU group | Intel Core 2 Quad Q8000/Q9000 (16) |
| 2 | Generation | 2 |
| Sandy Bridge S | Architecture | Yorkfield (Penryn) |
| Desktop / Server | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Core i5-2500S has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the Intel Core i5-2500S is 2.70 GHz (3.70 GHz) while the Intel Core 2 Quad Q8400s has 4 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the Intel Core 2 Quad Q8400s is at 2.66 GHz. |
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| Intel Core i5-2500S | Characteristic | Intel Core 2 Quad Q8400s |
| 4 | Cores | 4 |
| 4 | Threads | 4 |
| normal | Core architecture | normal |
| No | Hyperthreading | No |
| No | Overclocking ? | No |
| 2.70 GHz | Frequency | 2.66 GHz |
| 3.70 GHz | Turbo Frequency (1 Core) | -- |
| -- | Turbo Frequency (All Cores) | -- |
Internal GraphicsThe Intel Core i5-2500S or Intel Core 2 Quad Q8400s has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die. |
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| Intel HD Graphics 2000 | GPU | no iGPU |
| 0.85 GHz | GPU frequency | -- |
| 1.10 GHz | GPU (Turbo) | -- |
| 6 | GPU Generation | -- |
| 32 nm | Technology | |
| 2 | Max. displays | |
| 6 | Compute units | -- |
| 48 | Shader | -- |
| No | Hardware Raytracing | No |
| No | Frame Generation | No |
| 2 GB | Max. GPU Memory | -- |
| 10.1 | DirectX Version | -- |
Hardware codec supportA photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos. |
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| Intel HD Graphics 2000 | GPU | no iGPU |
| No | Codec h265 / HEVC (8 bit) | No |
| No | Codec h265 / HEVC (10 bit) | No |
| Decode / Encode | Codec h264 | No |
| No | Codec VP9 | No |
| No | Codec VP8 | No |
| No | Codec AV1 | No |
| Decode / Encode | Codec AVC | No |
| Decode | Codec VC-1 | No |
| No | Codec JPEG | No |
Memory & PCIeThe Intel Core i5-2500S can use up to 32 GB of memory in 2 memory channels. The maximum memory bandwidth is 21.3 GB/s. The Intel Core 2 Quad Q8400s supports up to 16 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 17.1 GB/s. |
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| Intel Core i5-2500S | Characteristic | Intel Core 2 Quad Q8400s |
| DDR3-1333 | Memory | DDR3-1066, DDR2-800 |
| 32 GB | Max. Memory | 16 GB |
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 21.3 GB/s | Max. Bandwidth | 17.1 GB/s |
| No | ECC | No |
| -- | L2 Cache | 4.00 MB |
| 6.00 MB | L3 Cache | -- |
| 2.0 | PCIe version | -- |
| 16 | PCIe lanes | -- |
| 8.0 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe thermal design power (TDP for short) of the Intel Core i5-2500S is 65 W, while the Intel Core 2 Quad Q8400s 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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| Intel Core i5-2500S | Characteristic | Intel Core 2 Quad Q8400s |
| 65 W | TDP (PL1 / PBP) | 65 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | -- |
Technical detailsThe Intel Core i5-2500S is manufactured in 32 nm and has 6.00 MB cache. The Intel Core 2 Quad Q8400s is manufactured in 45 nm and has a 4.00 MB cache. |
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| Intel Core i5-2500S | Characteristic | Intel Core 2 Quad Q8400s |
| 32 nm | Technology | 45 nm |
| Monolithic | Chip design | Monolithic |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4.1, SSE4.2, AVX | ISA extensions | MMX, SSE2, SSE3, SSE4.1 |
| LGA 1155 | Socket | LGA 775 |
| VT-x, VT-x EPT | Virtualization | VT-x, VT-d |
| Yes | AES-NI | No |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q1/2011 | Release date | Q2/2009 |
| -- | Release price | -- |
| show more data | show more data | |
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Rate these processors
Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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Intel Core i5-2500S
4C 4T @ 3.70 GHz |
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Intel Core 2 Quad Q8400s
4C 4T @ 2.66 GHz |
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Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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Intel Core i5-2500S
4C 4T @ 2.70 GHz |
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Intel Core 2 Quad Q8400s
4C 4T @ 2.66 GHz |
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Geekbench 6 (Single-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
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Intel Core i5-2500S
4C 4T @ 3.70 GHz |
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Intel Core 2 Quad Q8400s
4C 4T @ 2.66 GHz |
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Geekbench 6 (Multi-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
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Intel Core i5-2500S
4C 4T @ 2.70 GHz |
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Intel Core 2 Quad Q8400s
4C 4T @ 2.66 GHz |
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iGPU - FP32 Performance (Single-precision GFLOPS)
The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
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Intel Core i5-2500S
Intel HD Graphics 2000 @ 1.10 GHz |
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Intel Core 2 Quad Q8400s
@ 0.00 GHz |
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Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
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Intel Core i5-2500S
4C 4T @ 2.70 GHz |
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Intel Core 2 Quad Q8400s
4C 4T @ 2.66 GHz |
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Devices using this processor |
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| Intel Core i5-2500S | Intel Core 2 Quad Q8400s |
| Unknown | Unknown |
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