Core i9-14900KF vs Core 2 Extreme QX9650
Primary details
Comparing Core 2 Extreme QX9650 and Core i9-14900KF processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 82 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 66.54 |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | no data | 28.31 |
| Architecture codename | Yorkfield (2007−2009) | Raptor Lake-R (2023−2024) |
| Release date | November 2007 (17 years ago) | 17 October 2023 (1 year ago) |
| Launch price (MSRP) | no data | $564 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core 2 Extreme QX9650 and Core i9-14900KF 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) | 24 (Tetracosa-Core) |
| Performance-cores | no data | 8 |
| Efficient-cores | no data | 16 |
| Threads | 4 | 32 |
| Base clock speed | 3 GHz | 3.2 GHz |
| Boost clock speed | 3 GHz | 5.8 GHz |
| Bus rate | 1333 MHz | no data |
| L1 cache | 64K (per core) | 80 KB (per core) |
| L2 cache | 12 MB (shared) | 2 MB (per core) |
| L3 cache | 0 KB | 36 MB (shared) |
| Chip lithography | 45 nm | Intel 7 nm |
| Die size | 2x 107 mm2 | 257 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 64 °C | no data |
| Number of transistors | 820 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | + | + |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Extreme QX9650 and Core i9-14900KF 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 |
| Socket | LGA775 | FCLGA1700 |
| Power consumption (TDP) | 130 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Extreme QX9650 and Core i9-14900KF. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | - | 2.0 |
| Hyper-Threading Technology | - | + |
| TSX | - | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Demand Based Switching | - | no data |
| Turbo Boost Max 3.0 | no data | + |
| FSB parity | + | no data |
| Deep Learning Boost | - | + |
Security technologies
Core 2 Extreme QX9650 and Core i9-14900KF technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | + |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Extreme QX9650 and Core i9-14900KF are enumerated here.
| VT-d | no data | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme QX9650 and Core i9-14900KF. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR5-5600, DDR4-3200 |
| Maximum memory size | no data | 192 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 89.6 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Core 2 Extreme QX9650 and Core i9-14900KF.
| PCIe version | no data | 5.0 and 4.0 |
| PCI Express lanes | no data | 16 |
Pros & cons summary
| Physical cores | 4 | 24 |
| Threads | 4 | 32 |
| Power consumption (TDP) | 130 Watt | 125 Watt |
i9-14900KF has 500% more physical cores and 700% more threads, and 4% lower power consumption.
We couldn't decide between Core 2 Extreme QX9650 and Core i9-14900KF. We've got no test results to judge.
Should you still have questions on choice between Core 2 Extreme QX9650 and Core i9-14900KF, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
