Athlon 300U vs Core 2 Quad Q9400
Aggregate performance score
Athlon 300U outperforms Core 2 Quad Q9400 by an impressive 82% based on our aggregate benchmark results.
Primary details
Comparing Core 2 Quad Q9400 and Athlon 300U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2238 | 1753 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | AMD Athlon |
| Power efficiency | 1.33 | 15.38 |
| Architecture codename | Yorkfield (2007−2009) | Raven Ridge 2 (2019) |
| Release date | August 2008 (16 years ago) | 6 January 2019 (5 years ago) |
Detailed specifications
Core 2 Quad Q9400 and Athlon 300U 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) | 2 (Dual-core) |
| Threads | 4 | 4 |
| Base clock speed | 2.66 GHz | 2.4 GHz |
| Boost clock speed | 2.67 GHz | 3.3 GHz |
| Bus type | no data | PCIe 3.0 |
| Bus rate | 1333 MHz | no data |
| Multiplier | no data | 24 |
| L1 cache | 64K (per core) | 192 KB |
| L2 cache | 6 MB (shared) | 1 MB |
| L3 cache | 0 KB | 4 MB (shared) |
| Chip lithography | 45 nm | 14 nm |
| Die size | 2x 81 mm2 | 209.78 mm2 |
| Maximum case temperature (TCase) | 71 °C | no data |
| Number of transistors | 456 million | 4940 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Quad Q9400 and Athlon 300U 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 | LGA775 | FP5 |
| Power consumption (TDP) | 95 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Quad Q9400 and Athlon 300U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | XFR, FMA3, SSE 4.2, AVX2, SMT |
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | - | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Demand Based Switching | - | no data |
| FSB parity | - | no data |
Security technologies
Core 2 Quad Q9400 and Athlon 300U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Quad Q9400 and Athlon 300U are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q9400 and Athlon 300U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR4 Dual-channel |
| Maximum memory size | no data | 64 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 38.397 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon RX Vega 3 |
Peripherals
Specifications and connection of peripherals supported by Core 2 Quad Q9400 and Athlon 300U.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 12 |
Synthetic benchmark performance
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. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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.
Pros & cons summary
| Performance score | 1.39 | 2.53 |
| Physical cores | 4 | 2 |
| Chip lithography | 45 nm | 14 nm |
| Power consumption (TDP) | 95 Watt | 15 Watt |
Core 2 Quad Q9400 has 100% more physical cores.
Athlon 300U, on the other hand, has a 82% higher aggregate performance score, a 221.4% more advanced lithography process, and 533.3% lower power consumption.
The Athlon 300U is our recommended choice as it beats the Core 2 Quad Q9400 in performance tests.
Note that Core 2 Quad Q9400 is a desktop processor while Athlon 300U is a notebook one.
Should you still have questions on choice between Core 2 Quad Q9400 and Athlon 300U, ask them in Comments section, and we shall answer.
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