Core 2 Extreme QX9650 vs EPYC 7551
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 569 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.98 | no data |
| Market segment | Server | Desktop processor |
| Series | AMD EPYC | no data |
| Power efficiency | 3.46 | no data |
| Designer | AMD | Intel |
| Architecture codename | Naples (2017−2018) | Yorkfield (2007−2009) |
| Release date | 29 June 2017 (8 years ago) | November 2007 (18 years ago) |
| Launch price (MSRP) | $3,400 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
EPYC 7551 and Core 2 Extreme QX9650 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 | 32 (Dotriaconta-Core) | 4 (Quad-Core) |
| Threads | 64 | 4 |
| Base clock speed | 2 GHz | 3 GHz |
| Boost clock speed | 3 GHz | 3 GHz |
| Bus rate | no data | 1333 MHz |
| Multiplier | 20 | no data |
| L1 cache | 96K (per core) | 64K (per core) |
| L2 cache | 512K (per core) | 12 MB (shared) |
| L3 cache | 64 MB (shared) | 0 KB |
| Chip lithography | 14 nm | 45 nm |
| Die size | 192 mm2 | 2x 107 mm2 |
| Maximum case temperature (TCase) | no data | 64 °C |
| Number of transistors | 4,800 million | 820 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | + |
| VID voltage range | no data | 0.85V-1.3625V |
Compatibility
Information on EPYC 7551 and Core 2 Extreme QX9650 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 | 2 (Multiprocessor) | 1 |
| Socket | TR4 | LGA775 |
| Power consumption (TDP) | 180 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7551 and Core 2 Extreme QX9650. 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 | - |
| FSB parity | no data | + |
Security technologies
EPYC 7551 and Core 2 Extreme QX9650 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 EPYC 7551 and Core 2 Extreme QX9650 are enumerated here.
| AMD-V | + | - |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by EPYC 7551 and Core 2 Extreme QX9650. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Eight-channel | DDR1, DDR2, DDR3 |
| Maximum memory size | 2 TiB | no data |
| Max memory channels | 8 | no data |
| Maximum memory bandwidth | 170.671 GB/s | no data |
| ECC memory support | + | - |
Peripherals
Specifications and connection of peripherals supported by EPYC 7551 and Core 2 Extreme QX9650.
| PCIe version | 3.0 | no data |
| PCI Express lanes | 128 | no data |
Pros & cons summary
| Physical cores | 32 | 4 |
| Threads | 64 | 4 |
| Chip lithography | 14 nm | 45 nm |
| Power consumption (TDP) | 180 Watt | 130 Watt |
EPYC 7551 has 700% more physical cores and 1500% more threads, and a 221.4% more advanced lithography process.
Core 2 Extreme QX9650, on the other hand, has 38.5% lower power consumption.
We couldn't decide between AMD EPYC 7551 and Intel Core 2 Extreme QX9650. We've got no test results to judge.
Be aware that EPYC 7551 is a server/workstation processor while Core 2 Extreme QX9650 is a desktop one.
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