Atom Z515 vs Core 2 Quad Q8400
Aggregate performance score
Core 2 Quad Q8400 outperforms Atom Z515 by a whopping 1388% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2587 | 3712 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Atom |
| Power efficiency | 0.53 | 3.38 |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Yorkfield (2007−2009) | Silverthorne (2008−2010) |
| Release date | 19 April 2009 (16 years ago) | 8 April 2009 (16 years ago) |
Detailed specifications
Core 2 Quad Q8400 and Atom Z515 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 1 (Single-Core) |
| Threads | 4 | 1 |
| Base clock speed | 2.66 GHz | 1.2 GHz |
| Boost clock speed | 0.67 GHz | 1.2 GHz |
| Bus type | no data | FSB |
| Bus rate | 1333 MHz | 400 MT/s |
| Multiplier | no data | 12 |
| L1 cache | 64 KB (per core) | 56 KB (per core) |
| L2 cache | 4 MB (shared) | 512 KB (per core) |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 45 nm | 45 nm |
| Die size | 2x 82 mm2 | 26 mm2 |
| Maximum core temperature | no data | 90 °C |
| Maximum case temperature (TCase) | 71 °C | no data |
| Number of transistors | 456 million | 47 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Quad Q8400 and Atom Z515 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 (Uniprocessor) |
| Socket | FCLGA775,LGA775 | PBGA441 |
| Power consumption (TDP) | 95 Watt | 1.4 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Atom Z515. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE2, Intel® SSE3, Intel® SSSE3 |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | - |
| Hyper-Threading Technology | - | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Demand Based Switching | - | + |
| FSB parity | - | - |
Security technologies
Core 2 Quad Q8400 and Atom Z515 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Quad Q8400 and Atom Z515 are enumerated here.
| VT-d | no data | - |
| VT-x | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Atom Z515. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | unknown |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Atom Z515.
| PCIe version | 2.0 | no data |
Synthetic benchmarks
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 1.19 | 0.08 |
| Physical cores | 4 | 1 |
| Threads | 4 | 1 |
| Power consumption (TDP) | 95 Watt | 1 Watt |
Core 2 Quad Q8400 has a 1387.5% higher aggregate performance score, and 300% more physical cores and 300% more threads.
Atom Z515, on the other hand, has 9400% lower power consumption.
The Intel Core 2 Quad Q8400 is our recommended choice as it beats the Intel Atom Z515 in performance tests.
Note that Core 2 Quad Q8400 is a desktop processor while Atom Z515 is a notebook one.
Other comparisons
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