Intel Xeon E5520 vs Intel Pentium D 820
Comparative analysis of Intel Xeon E5520 and Intel Pentium D 820 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).
Differences
Reasons to consider the Intel Xeon E5520
- CPU is newer: launch date 3 year(s) 9 month(s) later
- 2 more cores, run more applications at once: 4 vs 2
- 6 more threads: 8 vs 2
- Around 12% higher maximum core temperature: 72°C vs 64.1°C
- A newer manufacturing process allows for a more powerful, yet cooler running processor: 45 nm vs 90 nm
- 9.1x more L1 cache, more data can be stored in the L1 cache for quick access later
- Around 19% lower typical power consumption: 80 Watt vs 95 Watt
- 2.2x better performance in Geekbench 4 - Single Core: 397 vs 179
- 6.4x better performance in Geekbench 4 - Multi-Core: 1969 vs 307
Specifications (specs) | |
Launch date | March 2009 vs May 2005 |
Number of cores | 4 vs 2 |
Number of threads | 8 vs 2 |
Maximum core temperature | 72°C vs 64.1°C |
Manufacturing process technology | 45 nm vs 90 nm |
L1 cache | 64 KB (per core) vs 28 KB |
Thermal Design Power (TDP) | 80 Watt vs 95 Watt |
Benchmarks | |
Geekbench 4 - Single Core | 397 vs 179 |
Geekbench 4 - Multi-Core | 1969 vs 307 |
Reasons to consider the Intel Pentium D 820
- Around 11% higher clock speed: 2.8 GHz vs 2.53 GHz
- 2x more L2 cache, more data can be stored in the L2 cache for quick access later
Maximum frequency | 2.8 GHz vs 2.53 GHz |
L2 cache | 2048 KB vs 256 KB (per core) |
Compare benchmarks
CPU 1: Intel Xeon E5520
CPU 2: Intel Pentium D 820
Geekbench 4 - Single Core |
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Geekbench 4 - Multi-Core |
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Name | Intel Xeon E5520 | Intel Pentium D 820 |
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PassMark - Single thread mark | 1104 | |
PassMark - CPU mark | 4642 | |
Geekbench 4 - Single Core | 397 | 179 |
Geekbench 4 - Multi-Core | 1969 | 307 |
CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 1.453 | |
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 62.27 | |
CompuBench 1.5 Desktop - T-Rex (Frames/s) | 0.429 | |
CompuBench 1.5 Desktop - Video Composition (Frames/s) | 2.436 | |
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 6.95 |
Compare specifications (specs)
Intel Xeon E5520 | Intel Pentium D 820 | |
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Essentials |
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Architecture codename | Nehalem EP | Smithfield |
Launch date | March 2009 | May 2005 |
Launch price (MSRP) | $19 | |
Place in performance rating | 2725 | 3302 |
Price now | $42.39 | |
Processor Number | E5520 | 820 |
Series | Legacy Intel® Xeon® Processors | Legacy Intel® Pentium® Processor |
Status | Launched | Discontinued |
Value for money (0-100) | 30.90 | |
Vertical segment | Server | Desktop |
Performance |
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64 bit support | ||
Base frequency | 2.26 GHz | 2.80 GHz |
Bus Speed | 5.86 GT/s QPI | 800 MHz FSB |
Die size | 263 mm2 | 206 mm2 |
L1 cache | 64 KB (per core) | 28 KB |
L2 cache | 256 KB (per core) | 2048 KB |
L3 cache | 8192 KB (shared) | |
Manufacturing process technology | 45 nm | 90 nm |
Maximum core temperature | 72°C | 64.1°C |
Maximum frequency | 2.53 GHz | 2.8 GHz |
Number of cores | 4 | 2 |
Number of QPI Links | 2 | |
Number of threads | 8 | 2 |
Transistor count | 731 million | 230 million |
VID voltage range | 0.75V -1.35V | 1.200V-1.400V |
Front-side bus (FSB) | 800 MHz | |
Memory |
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ECC memory support | ||
Max memory channels | 3 | |
Maximum memory bandwidth | 25.6 GB/s | |
Maximum memory size | 144 GB | |
Supported memory types | DDR3 800/1066 | DDR1, DDR2, DDR3 |
Compatibility |
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Low Halogen Options Available | ||
Max number of CPUs in a configuration | 2 | 2 |
Package Size | 42.5mm x 45mm | 37.5mm x 37.5mm |
Sockets supported | FCLGA1366 | PLGA775 |
Thermal Design Power (TDP) | 80 Watt | 95 Watt |
Security & Reliability |
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Execute Disable Bit (EDB) | ||
Intel® Trusted Execution technology (TXT) | ||
Advanced Technologies |
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Enhanced Intel SpeedStep® technology | ||
Idle States | ||
Intel 64 | ||
Intel® Demand Based Switching | ||
Intel® Hyper-Threading technology | ||
Intel® Turbo Boost technology | ||
Physical Address Extensions (PAE) | 40-bit | 32-bit |
FSB parity | ||
Intel® AES New Instructions | ||
Thermal Monitoring | ||
Virtualization |
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Intel® Virtualization Technology (VT-x) | ||
Intel® Virtualization Technology for Directed I/O (VT-d) | ||
Intel® VT-x with Extended Page Tables (EPT) |