Core 2 Extreme X7800 vs Core i9-9900K
Aggregate performance score
Core i9-9900K outperforms Core 2 Extreme X7800 by a whopping 1512% based on our aggregate benchmark results.
Primary details
Comparing Core i9-9900K and Core 2 Extreme X7800 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 673 | 2686 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 7.73 | no data |
| Market segment | Desktop processor | Laptop |
| Series | Core i9 (Desktop) | Intel Core 2 Extreme |
| Power efficiency | 11.45 | 1.53 |
| Architecture codename | Coffee Lake-R (2018−2019) | Merom XE (2007) |
| Release date | 8 October 2018 (6 years ago) | 17 July 2007 (17 years ago) |
| Launch price (MSRP) | $488 | $851 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i9-9900K and Core 2 Extreme X7800 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 | 8 (Octa-Core) | 2 (Dual-core) |
| Threads | 16 | 2 |
| Base clock speed | 3.6 GHz | 2.6 GHz |
| Boost clock speed | 5 GHz | 2.6 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | 800 MHz |
| L1 cache | 512 KB | 128 KB |
| L2 cache | 2 MB | 4 MB |
| L3 cache | 16 MB (shared) | 4 MB L2 Cache |
| Chip lithography | 14 nm | 65 nm |
| Die size | 178 mm2 | 143 mm2 |
| Maximum core temperature | 100 °C | 100 °C |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | no data | 291 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
| Unlocked multiplier | + | - |
| VID voltage range | no data | 1.1V-1.375V |
Compatibility
Information on Core i9-9900K and Core 2 Extreme X7800 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 (Uniprocessor) | no data |
| Socket | LGA-1151 | PPGA478 |
| Power consumption (TDP) | 95 Watt | 44 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-9900K and Core 2 Extreme X7800. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | no data |
| AES-NI | + | - |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | - |
| TSX | + | - |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| SIPP | + | - |
| Demand Based Switching | no data | - |
| FSB parity | no data | - |
Security technologies
Core i9-9900K and Core 2 Extreme X7800 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Secure Key | + | no data |
| MPX | + | - |
| Identity Protection | + | - |
| SGX | Yes with Intel® ME | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-9900K and Core 2 Extreme X7800 are enumerated here.
| AMD-V | + | - |
| VT-d | + | no data |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-9900K and Core 2 Extreme X7800. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | no data |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 44.668 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel UHD Graphics 630 | no data |
| Max video memory | 64 GB | no data |
| Quick Sync Video | + | - |
| Clear Video | + | no data |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.2 GHz | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i9-9900K and Core 2 Extreme X7800 integrated GPUs.
| Number of displays supported | 3 | no data |
Graphics image quality
Maximum display resolutions supported by Core i9-9900K and Core 2 Extreme X7800 integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | + | no data |
| Max resolution over HDMI 1.4 | 4096 x 2304@24Hz | no data |
| Max resolution over eDP | 4096 x 2304@60Hz | no data |
| Max resolution over DisplayPort | 4096 x 2304@60Hz | no data |
Graphics API support
APIs supported by Core i9-9900K and Core 2 Extreme X7800 integrated GPUs, sometimes API versions are included.
| DirectX | 12 | no data |
| OpenGL | 4.5 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i9-9900K and Core 2 Extreme X7800.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 16 | no data |
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.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
Pros & cons summary
| Performance score | 11.93 | 0.74 |
| Recency | 8 October 2018 | 17 July 2007 |
| Physical cores | 8 | 2 |
| Threads | 16 | 2 |
| Chip lithography | 14 nm | 65 nm |
| Power consumption (TDP) | 95 Watt | 44 Watt |
i9-9900K has a 1512.2% higher aggregate performance score, an age advantage of 11 years, 300% more physical cores and 700% more threads, and a 364.3% more advanced lithography process.
Core 2 Extreme X7800, on the other hand, has 115.9% lower power consumption.
The Core i9-9900K is our recommended choice as it beats the Core 2 Extreme X7800 in performance tests.
Note that Core i9-9900K is a desktop processor while Core 2 Extreme X7800 is a notebook one.
Should you still have questions on choice between Core i9-9900K and Core 2 Extreme X7800, ask them in Comments section, and we shall answer.
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