Winner
Intel Xeon X5650
CPUBoss recommends the Intel Xeon X5650 based on its performance, single-core performance and value.
See full details Intel Xeon X5650 vs E5520 |
Released March, 2010
Intel Xeon X5650
- 2.66 GHz
- Hexa core
5.4 Out of 10
Reasons to buy the Intel Xeon X5650
 | Much higher clock speed 2.66 GHz | | Significantly higher turbo clock speed 3.06 GHz |
| | Much more l2 cache 2 MB | | Much better PassMark score 7,510 |
VS
Released March, 2009
Intel Xeon E5520
- 2.26 GHz
- Quad core
5.2 Out of 10
Reasons to buy the E5520
| | Lower typical power consumption 65W | | Lower annual commercial energy cost 70.08 $/year |
| | Lower annual home energy cost 19.27 $/year |
CPUBoss Review Our evaluation of X5650 vs E5520 among all CPUs
Performance | |
Benchmark performance using all cores | |
| PCMark 8 Home 3.0 Accelerated, PassMark and 1 more | |
Single-core Performance | |
Individual core benchmark performance | |
| PassMark (Single Core), Geekbench 3 Single Core and 1 more | |
Integrated Graphics | |
Integrated GPU performance for graphics | |
| Sky Diver and Cloud Gate | |
Integrated Graphics (OpenCL) | |
Integrated GPU performance for parallel computing | |
| CompuBench 1.5 Bitcoin mining and 4 more | |
Performance per Watt | |
How efficiently does the processor use electricity? | |
| Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more | |
Value | |
Are you paying a premium for performance? | |
| Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more | |
| 5.4 | CPUBoss Score |
Combination of all six facets | |
 | Winner |
Cast your vote Do you agree or disagree with CPUBoss?
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Differences What are the advantages of each
| |||||||
| Much higher clock speed | 2.66 GHz | vs | 2.26 GHz | Around 20% higher clock speed | |||
|---|---|---|---|---|---|---|---|
| Significantly higher turbo clock speed | 3.06 GHz | vs | 2.53 GHz | More than 20% higher turbo clock speed | |||
| Much more l2 cache | 2 MB | vs | 1 MB | 2x more l2 cache; more data can be stored in the l2 cache for quick access later | |||
| Much better PassMark score | 7,510 | vs | 4,453 | Around 70% better PassMark score | |||
| Much more l3 cache | 12 MB | vs | 8 MB | 50% more l3 cache; more data can be stored in the l3 cache for quick access later | |||
| More cores | 6 | vs | 4 | 2 more cores; run more applications at once | |||
| Much better performance per watt | 7.89 pt/W | vs | 2.4 pt/W | More than 3.2x better performance per watt | |||
| Much better performance per dollar | 1.44 pt/$ | vs | 0.49 pt/$ | Around 3x better performance per dollar | |||
| Much higher Maximum operating temperature | 81.3 °C | vs | 72 °C | Around 15% higher Maximum operating temperature | |||
| Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
| More threads | 12 | vs | 8 | 4 more threads | |||
| Much better overclocked clock speed (Air) | 3.84 GHz | vs | 3.28 GHz | More than 15% better overclocked clock speed (Air) | |||
| Supports more RAM | 294,912 MB | vs | 147,456 MB | Supports 2x more RAM | |||
| Newer manufacturing process | 32 nm | vs | 45 nm | A newer manufacturing process allows for a more powerful, yet cooler running processor | |||
| More l2 cache per core | 0.33 MB/core | vs | 0.25 MB/core | Around 35% more l2 cache per core | |||
| Much better overclocked clock speed (Water) | 4.64 GHz | vs | 4.27 GHz | Around 10% better overclocked clock speed (Water) | |||
| Newer | Mar, 2010 | vs | Mar, 2009 | Release date 11 months later | |||
| |||||||
| Lower typical power consumption | 65W | vs | 77.19W | More than 15% lower typical power consumption | |||
| Lower annual commercial energy cost | 70.08 $/year | vs | 83.22 $/year | More than 15% lower annual commercial energy cost | |||
| Lower annual home energy cost | 19.27 $/year | vs | 22.89 $/year | More than 15% lower annual home energy cost | |||
Report a correction
Benchmarks Real world tests of Xeon X5650 vs E5520
GeekBench 3 (Multi-core) Data courtesy Primate Labs
GeekBench 3 (Single core) Data courtesy Primate Labs
GeekBench 3 (AES single core) Data courtesy Primate Labs
GeekBench (32-bit) Data courtesy Primate Labs
GeekBench (64-bit) Data courtesy Primate Labs
GeekBench
PassMark Data courtesy Passmark
PassMark (Single Core)
Specifications Full list of technical specs
summary | Xeon X5650 | vs | E5520 |
|---|---|---|---|
| Clock speed | 2.66 GHz | 2.26 GHz | |
| Turbo clock speed | 3.06 GHz | 2.53 GHz | |
| Cores | Hexa core | Quad core | |
| Socket type | |||
| LGA 1366 | |||
features | |||
| Has a NX bit | Yes | Yes | |
| Supports trusted computing | Yes | No | |
| Has virtualization support | Yes | Yes | |
| Instruction set extensions | |||
| SSE2 | |||
| MMX | |||
| SSE4 | |||
| SSE3 | |||
| SSE | |||
| SSE4.1 | |||
| SSE4.2 | |||
| Supplemental SSE3 | |||
| AES | |||
| Supports dynamic frequency scaling | Yes | Yes | |
power consumption | |||
| TDP | 95W | 80W | |
| Annual home energy cost | 22.89 $/year | 19.27 $/year | |
| Annual commercial energy cost | 83.22 $/year | 70.08 $/year | |
| Performance per watt | 7.89 pt/W | 2.4 pt/W | |
| Typical power consumption | 77.19W | 65W | |
memory controller | |||
| Memory controller | Built-in | Built-in | |
| Memory type | |||
| DDR3-1333 | |||
| DDR3-1066 | |||
| DDR3-800 | |||
| DDR3 | |||
| Channels | Triple Channel | Triple Channel | |
| Supports ECC | Yes | Yes | |
| Maximum bandwidth | 31,999.98 MB/s | 25,599.99 MB/s | |
| Maximum memory size | 294,912 MB | 147,456 MB | |
details | Xeon X5650 | vs | E5520 |
|---|---|---|---|
| Architecture | x86-64 | x86-64 | |
| Threads | 12 | 8 | |
| L2 cache | 2 MB | 1 MB | |
| L2 cache per core | 0.33 MB/core | 0.25 MB/core | |
| L3 cache | 12 MB | 8 MB | |
| L3 cache per core | 2 MB/core | 2 MB/core | |
| Manufacture process | 32 nm | 45 nm | |
| Max CPUs | 2 | 2 | |
| Clock multiplier | 20 | 17 | |
| Voltage range | 0.75 - 1.35V | 0.75 - 1.35V | |
| Operating temperature | Unknown - 81.3°C | Unknown - 72°C | |
overclocking | |||
| Overclocked clock speed | 3.84 GHz | 3.28 GHz | |
| Overclocked clock speed (Water) | 4.64 GHz | 4.27 GHz | |
| Overclocked clock speed (Air) | 3.84 GHz | 3.28 GHz | |
integrated graphics | |||
| GPU | None | None | |
| Label | N/A | N/A | |
| Latest DirectX | N/A | N/A | |
| Number of displays supported | N/A | N/A | |
| GPU clock speed | N/A | N/A | |
| Turbo clock speed | N/A | N/A | |
| 3DMark06 | N/A | N/A | |
bus | |||
| Architecture | QPI | QPI | |
| Number of links | 2 | 2 | |
| Data rate | 51,200 MB/s | 46,928 MB/s | |
| Transfer rate | 6,400 MT/s | 5,860 MT/s | |
| Clock speed | 3,200 MHz | 2,930 MHz | |
 Intel Xeon X5650  Report a correction |  Intel Xeon E5520 Report a correction |
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