EPYC 7773X vs Core 2 Quad Q8400s
Primary details
Comparing Core 2 Quad Q8400s and EPYC 7773X processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 22 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Power efficiency | no data | 19.42 |
| Architecture codename | Yorkfield (2007−2009) | Milan-X (2022) |
| Release date | 19 April 2009 (15 years ago) | 22 March 2022 (2 years ago) |
Detailed specifications
Core 2 Quad Q8400s and EPYC 7773X 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) | 64 (Tetrahexaconta-Core) |
| Threads | 4 | 128 |
| Base clock speed | 2.66 GHz | 2.2 GHz |
| Boost clock speed | 0.67 GHz | 3.5 GHz |
| Bus rate | 1333 MHz | no data |
| L1 cache | 64 KB (per core) | 64K (per core) |
| L2 cache | 4 MB (shared) | 512K (per core) |
| L3 cache | 0 KB | 768 MB (shared) |
| Chip lithography | 45 nm | 7 nm |
| Die size | 2x 82 mm2 | 8x 81 mm2 |
| Maximum case temperature (TCase) | 76 °C | no data |
| Number of transistors | 456 million | 33,200 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | no data |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Quad Q8400s and EPYC 7773X 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 | 2 |
| Socket | FCLGA775,LGA775 | SP3 |
| Power consumption (TDP) | 65 Watt | 280 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Quad Q8400s and EPYC 7773X. You'll probably need this information if you require some particular technology.
| 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 |
| Precision Boost 2 | no data | + |
Security technologies
Core 2 Quad Q8400s and EPYC 7773X 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 Q8400s and EPYC 7773X are enumerated here.
| AMD-V | - | + |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400s and EPYC 7773X. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR4-3200 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | no data |
Peripherals
Specifications and connection of peripherals supported by Core 2 Quad Q8400s and EPYC 7773X.
| PCIe version | 2.0 | 4.0 |
| PCI Express lanes | no data | 128 |
Pros & cons summary
| Recency | 19 April 2009 | 22 March 2022 |
| Physical cores | 4 | 64 |
| Threads | 4 | 128 |
| Chip lithography | 45 nm | 7 nm |
| Power consumption (TDP) | 65 Watt | 280 Watt |
Core 2 Quad Q8400s has 330.8% lower power consumption.
EPYC 7773X, on the other hand, has an age advantage of 12 years, 1500% more physical cores and 3100% more threads, and a 542.9% more advanced lithography process.
We couldn't decide between Core 2 Quad Q8400s and EPYC 7773X. We've got no test results to judge.
Note that Core 2 Quad Q8400s is a desktop processor while EPYC 7773X is a server/workstation one.
Should you still have questions on choice between Core 2 Quad Q8400s and EPYC 7773X, ask them in Comments section, and we shall answer.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
