Intel Xeon E5649 vs Core i7 920 |
Released February, 2011
Intel Xeon E5649
- 2.53 GHz
- Hexa core
5.3 Out of 10
Reasons to buy the Intel Xeon E5649
 | Much better geekbench 3 AES single core score 1,240,000 MB/s | | Significantly more l2 cache 2 MB |
| | Much lower typical power consumption 65W | | Much newer manufacturing process 32 nm |
VS
Released October, 2008
Intel Core i7 920
- 2.66 GHz
- Quad core
5.2 Out of 10
Reasons to buy the Core i7 920
| | Slightly higher clock speed 2.66 GHz | | Slightly better overclocked clock speed (Water) 4.24 GHz |
CPUBoss Review Our evaluation of E5649 vs 920 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 | |
No winner declared
Too close to call
Cast your vote Do you agree or disagree with CPUBoss?
VS
Intel Xeon E5649CPUBoss Winner |  | |
Differences What are the advantages of each
| |||||||
| Much better geekbench 3 AES single core score | 1,240,000 MB/s | vs | 143,700 MB/s | Around 8.8x better geekbench 3 AES single core score | |||
|---|---|---|---|---|---|---|---|
| Significantly 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 lower typical power consumption | 65W | vs | 135.63W | 2.1x lower typical power consumption | |||
| Much newer manufacturing process | 32 nm | vs | 45 nm | A newer manufacturing process allows for a more powerful, yet cooler running processor | |||
| 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 | |||
| Much better performance per watt | 7.4 pt/W | vs | 1.21 pt/W | Around 6.2x better performance per watt | |||
| Supports more CPUs in SMP configuration | 2 | vs | 1 | Twice as many CPUs in SMP configuration | |||
| Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
| More cores | 6 | vs | 4 | 2 more cores; run more applications at once | |||
| Much lower annual home energy cost | 19.27 $/year | vs | 48.38 $/year | 2.5x lower annual home energy cost | |||
| More threads | 12 | vs | 8 | 4 more threads | |||
| Better PassMark score | 7,051 | vs | 4,958 | More than 40% better PassMark score | |||
| Much lower annual commercial energy cost | 70.08 $/year | vs | 134.55 $/year | Around 50% lower annual commercial energy cost | |||
| Better performance per dollar | 0.76 pt/$ | vs | 0.61 pt/$ | More than 25% better performance per dollar | |||
| Newer | Feb, 2011 | vs | Oct, 2008 | Release date over 2 years later | |||
| Higher Maximum operating temperature | 76.2 °C | vs | 67.9 °C | More than 10% higher Maximum operating temperature | |||
| More l2 cache per core | 0.33 MB/core | vs | 0.25 MB/core | Around 35% more l2 cache per core | |||
| |||||||
| Slightly higher clock speed | 2.66 GHz | vs | 2.53 GHz | More than 5% higher clock speed | |||
| Slightly better overclocked clock speed (Water) | 4.24 GHz | vs | 4.11 GHz | Around 5% better overclocked clock speed (Water) | |||
Report a correction
Benchmarks Real world tests of Xeon E5649 vs Core i7 920
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
PassMark Data courtesy Passmark
PassMark (Single Core)
Specifications Full list of technical specs
summary | Xeon E5649 | vs | Core i7 920 |
|---|---|---|---|
| Clock speed | 2.53 GHz | 2.66 GHz | |
| Turbo clock speed | 2.93 GHz | 2.93 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 | 80W | 130W | |
| Annual home energy cost | 19.27 $/year | 48.38 $/year | |
| Annual commercial energy cost | 70.08 $/year | 134.55 $/year | |
| Performance per watt | 7.4 pt/W | 1.21 pt/W | |
| Typical power consumption | 65W | 135.63W | |
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 | No | |
| Maximum bandwidth | 31,999.98 MB/s | 25,599.99 MB/s | |
details | Xeon E5649 | vs | Core i7 920 |
|---|---|---|---|
| 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 | 1 | |
| Clock multiplier | 19 | 20 | |
| Voltage range | 0.75 - 1.35V | 0.8 - 1.38V | |
| Operating temperature | Unknown - 76.2°C | Unknown - 67.9°C | |
overclocking | |||
| Overclock popularity | 0 | 491 | |
| Overclocked clock speed | 4.25 GHz | 4.22 GHz | |
| Overclocked clock speed (Water) | 4.11 GHz | 4.24 GHz | |
| Overclocked clock speed (Air) | 4.25 GHz | 4.22 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 | 1 | |
| Data rate | 46,928 MB/s | 19,200 MB/s | |
| Transfer rate | 5,860 MT/s | 4,800 MT/s | |
| Clock speed | 2,930 MHz | 2,400 MHz | |
 Intel Xeon E5649  Report a correction |  Intel Core i7 920 Report a correction |
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