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| Intel Pentium 755 vs Core2 Duo E8400 |
Released May, 2004
Intel Pentium 755
- 2 GHz
- Single core
Reasons to buy the Intel Pentium 755
![]() | Much lower typical power consumption 6.09W | ![]() | Much lower annual home energy cost 1.81 $/year |
![]() | Much lower annual commercial energy cost 6.57 $/year |
VS
Released January, 2008
Intel Core2 Duo E8400
- 3 GHz
- Dual core
Reasons to buy the Core2 Duo E8400
![]() | Much more l2 cache 6 MB | ![]() | Much newer manufacturing process 45 nm |
![]() | Significantly higher clock speed 3 GHz | ![]() | More advanced architecture x86-64 |
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Differences What are the advantages of each
| |||||||
Much lower typical power consumption | 6.09W | vs | 52.81W | 8.7x lower typical power consumption | |||
---|---|---|---|---|---|---|---|
Much lower annual home energy cost | 1.81 $/year | vs | 15.66 $/year | 8.7x lower annual home energy cost | |||
Much lower annual commercial energy cost | 6.57 $/year | vs | 56.94 $/year | 8.7x lower annual commercial energy cost | |||
| |||||||
Much more l2 cache | 6 MB | vs | 2 MB | 3x more l2 cache; more data can be stored in the l2 cache for quick access later | |||
Much newer manufacturing process | 45 nm | vs | 90 nm | A newer manufacturing process allows for a more powerful, yet cooler running processor | |||
Significantly higher clock speed | 3 GHz | vs | 2 GHz | 50% higher clock speed | |||
More advanced architecture | x86-64 | vs | x86 | A 64-bit architecture allows more RAM to be installed and accessed by the processor | |||
Has a NX bit | Yes | vs | No | Somewhat common; Prevents a common class of security exploits | |||
Has virtualization support | Yes | vs | No | Somewhat common; Boosts performance of virtual machines | |||
Much more l2 cache per core | 3 MB/core | vs | 2 MB/core | 50% more l2 cache per core | |||
Much better overclocked clock speed (Air) | 4.22 GHz | vs | 2.35 GHz | More than 80% better overclocked clock speed (Air) | |||
Supports trusted computing | Yes | vs | No | Somewhat common; Allows for safer, more reliable computing | |||
Newer | Jan, 2008 | vs | May, 2004 | Release date over 3 years later | |||
Much better overclocked clock speed (Water) | 4.23 GHz | vs | 2 GHz | More than 2x better overclocked clock speed (Water) | |||
More cores | 2 | vs | 1 | Twice as many cores; run more applications at once |
Features Key features of the Pentium 755 vs Core2 Duo E8400
clock speed
Pentium 755
2 GHz
Core2 Duo E8400
3 GHz
L2 cache
Pentium 755
2 MB
Core2 Duo E8400
6 MB
overclocked clock speed (air)
Pentium 755
2.35 GHz
Core2 Duo E8400
4.22 GHz
overclocked clock speed (water)
Pentium 755
2 GHz
Core2 Duo E8400
4.23 GHz
TDP
Pentium 755
7.5W
Core2 Duo E8400
65W
Specifications Full list of technical specs
summary | Pentium 755 | vs | Core2 Duo E8400 |
---|---|---|---|
Clock speed | 2 GHz | 3 GHz | |
Cores | Single core | Dual core | |
Socket type | |||
479 | |||
LGA 775 | |||
features | |||
Has a NX bit | No | Yes | |
Supports trusted computing | No | Yes | |
Has virtualization support | No | Yes | |
Instruction set extensions | |||
SSE2 | |||
MMX | |||
SSE3 | |||
SSE | |||
SSE4.1 | |||
Supplemental SSE3 | |||
Supports dynamic frequency scaling | Yes | Yes | |
power consumption | |||
TDP | 7.5W | 65W | |
Annual home energy cost | 1.81 $/year | 15.66 $/year | |
Annual commercial energy cost | 6.57 $/year | 56.94 $/year | |
Typical power consumption | 6.09W | 52.81W | |
bus | |||
Architecture | FSB | FSB | |
Number of links | 1 | 1 | |
Clock speed | 400 MHz | 1,333 MHz |
details | Pentium 755 | vs | Core2 Duo E8400 |
---|---|---|---|
Architecture | x86 | x86-64 | |
Threads | 1 | 2 | |
L2 cache | 2 MB | 6 MB | |
L2 cache per core | 2 MB/core | 3 MB/core | |
Manufacture process | 90 nm | 45 nm | |
Transistor count | 144,000,000 | 410,000,000 | |
Max CPUs | 1 | 1 | |
Clock multiplier | 20 | 9 | |
Voltage range | 0.99 - 1.34V | 0.85 - 1.36V | |
overclocking | |||
Overclocked clock speed | 2.35 GHz | 4.22 GHz | |
Overclocked clock speed (Water) | 2 GHz | 4.23 GHz | |
Overclocked clock speed (Air) | 2.35 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 |
Intel Pentium 755 ![]() | Intel Core2 Duo E8400 ![]() |
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