Pentium M 765 vs Xeon 6521P
Aggregate performance score
Xeon 6521P outperforms Pentium M 765 by a whopping 18260% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 104 | 3475 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 33.98 | no data |
| Market segment | Server | Laptop |
| Series | no data | Pentium M |
| Power efficiency | 17.50 | 1.02 |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Granite Rapids (2024−2025) | Dothan (2004−2005) |
| Release date | 24 February 2025 (less than a year ago) | 20 October 2004 (21 years ago) |
| Launch price (MSRP) | $1,250 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Xeon 6521P and Pentium M 765 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 | 24 (Tetracosa-Core) | 1 (Single-Core) |
| Threads | 48 | 1 |
| Base clock speed | 2.6 GHz | 2.1 GHz |
| Boost clock speed | 4.1 GHz | 2.1 GHz |
| Bus rate | no data | 400 MHz |
| L1 cache | 112 KB (per core) | 32 KB |
| L2 cache | 2 MB (per core) | 2 MB |
| L3 cache | 144 MB (shared) | 0 KB |
| Chip lithography | Intel 3 nm | 90 nm |
| Die size | 598 mm2 | 87 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 82 °C | no data |
| Number of transistors | no data | 144 million |
| 64 bit support | + | - |
| Windows 11 compatibility | no data | - |
| VID voltage range | no data | 0.988-1.356V |
Compatibility
Information on Xeon 6521P and Pentium M 765 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 | FCLGA4710 | PPGA478, H-PBGA479 |
| Power consumption (TDP) | 225 Watt | 7.5 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon 6521P and Pentium M 765. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512, Intel® AMX | no data |
| AES-NI | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | - |
| TSX | + | - |
| Idle States | no data | - |
| Demand Based Switching | no data | - |
| PAE | no data | 32 Bit |
| FSB parity | no data | - |
| Deep Learning Boost | + | - |
Security technologies
Xeon 6521P and Pentium M 765 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| SGX | + | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon 6521P and Pentium M 765 are enumerated here.
| VT-d | + | no data |
| VT-x | + | - |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon 6521P and Pentium M 765. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5(6400MT/s) | DDR2 |
| Maximum memory size | 4 TB | no data |
| Max memory channels | 8 | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Xeon 6521P and Pentium M 765.
| PCIe version | 5.0 | no data |
| PCI Express lanes | 136 | no data |
Pros & cons summary
| Performance score | 36.72 | 0.20 |
| Recency | 24 February 2025 | 20 October 2004 |
| Physical cores | 24 | 1 |
| Threads | 48 | 1 |
| Power consumption (TDP) | 225 Watt | 7 Watt |
Xeon 6521P has a 18260% higher aggregate performance score, an age advantage of 20 years, and 2300% more physical cores and 4700% more threads.
Pentium M 765, on the other hand, has 3114.3% lower power consumption.
The Intel Xeon 6521P is our recommended choice as it beats the Intel Pentium M 765 in performance tests.
Be aware that Xeon 6521P is a server/workstation processor while Pentium M 765 is a notebook one.
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