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| Intel Pentium E2140 vs D 820 |
Released April, 2007
Intel Pentium E2140
- 1.6 GHz
- Dual core
Reasons to buy the Intel Pentium E2140
![]() | Much newer manufacturing process 65 nm | ![]() | Supports dynamic frequency scaling Yes |
![]() | Much lower typical power consumption 52.81W | ![]() | Significantly lower annual home energy cost 15.66 $/year |
VS
Released April, 2005
Intel Pentium D 820
- 2.8 GHz
- Dual core
Reasons to buy the D 820
![]() | Much higher clock speed 2.8 GHz | ![]() | Much more l2 cache 2 MB |
![]() | Much more l2 cache per core 1 MB/core | ![]() | Much better overclocked clock speed (Air) 3.52 GHz |
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Differences What are the advantages of each
| |||||||
Much newer manufacturing process | 65 nm | vs | 90 nm | A newer manufacturing process allows for a more powerful, yet cooler running processor | |||
---|---|---|---|---|---|---|---|
Supports dynamic frequency scaling | Yes | vs | No | Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed | |||
Much lower typical power consumption | 52.81W | vs | 77.19W | More than 30% lower typical power consumption | |||
Significantly lower annual home energy cost | 15.66 $/year | vs | 22.89 $/year | More than 30% lower annual home energy cost | |||
Significantly lower annual commercial energy cost | 56.94 $/year | vs | 83.22 $/year | More than 30% lower annual commercial energy cost | |||
Newer | Apr, 2007 | vs | Apr, 2005 | Release date over 2 years later | |||
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Much higher clock speed | 2.8 GHz | vs | 1.6 GHz | Around 75% higher 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 more l2 cache per core | 1 MB/core | vs | 0.5 MB/core | 2x more l2 cache per core | |||
Much better overclocked clock speed (Air) | 3.52 GHz | vs | 3 GHz | More than 15% better overclocked clock speed (Air) | |||
Higher Maximum operating temperature | 64.1 °C | vs | 61.4 °C | Around 5% higher Maximum operating temperature | |||
Much better overclocked clock speed (Water) | 4.25 GHz | vs | 3.06 GHz | Around 40% better overclocked clock speed (Water) |
Benchmarks Real world tests of Pentium E2140 vs D 820
GeekBench 3 (Multi-core) Data courtesy Primate Labs
Pentium E2140
1,521
Pentium D 820
1,378
GeekBench 3 (Single core) Data courtesy Primate Labs
Pentium E2140
846
Pentium D 820
788
GeekBench 3 (AES single core) Data courtesy Primate Labs
Pentium E2140
68,300 MB/s
Pentium D 820
100,200 MB/s
GeekBench (32-bit) Data courtesy Primate Labs
Pentium E2140
1,447
Pentium D 820
1,268
GeekBench
Pentium E2140
1,771
Pentium D 820
2,414
Specifications Full list of technical specs
summary | Pentium E2140 | vs | D 820 |
---|---|---|---|
Clock speed | 1.6 GHz | 2.8 GHz | |
Cores | Dual core | Dual core | |
Socket type | |||
LGA 775 | |||
features | |||
Has a NX bit | Yes | Yes | |
Supports trusted computing | No | No | |
Has virtualization support | No | No | |
Instruction set extensions | |||
SSE2 | |||
MMX | |||
SSE3 | |||
SSE | |||
Supplemental SSE3 | |||
Supports dynamic frequency scaling | Yes | No | |
power consumption | |||
TDP | 65W | 95W | |
Annual home energy cost | 15.66 $/year | 22.89 $/year | |
Annual commercial energy cost | 56.94 $/year | 83.22 $/year | |
Performance per watt | 0.99 pt/W | 0.94 pt/W | |
Typical power consumption | 52.81W | 77.19W | |
bus | |||
Architecture | FSB | FSB | |
Number of links | 1 | 1 | |
Clock speed | 800 MHz | 800 MHz |
details | Pentium E2140 | vs | D 820 |
---|---|---|---|
Architecture | x86-64 | x86-64 | |
Threads | 2 | 2 | |
L2 cache | 1 MB | 2 MB | |
L2 cache per core | 0.5 MB/core | 1 MB/core | |
Manufacture process | 65 nm | 90 nm | |
Transistor count | 105,000,000 | 230,000,000 | |
Max CPUs | 1 | 1 | |
Clock multiplier | 8 | 14 | |
Voltage range | 0.85 - 1.5V | 1.2 - 1.4V | |
Operating temperature | Unknown - 61.4°C | Unknown - 64.1°C | |
overclocking | |||
Overclock popularity | 4 | 11 | |
Overclocked clock speed | 3 GHz | 3.52 GHz | |
Overclocked clock speed (Water) | 3.06 GHz | 4.25 GHz | |
Overclocked clock speed (Air) | 3 GHz | 3.52 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 |
Intel Pentium E2140 ![]() | Intel Pentium D 820 ![]() |
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