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| Intel Pentium D 820 vs AMD Athlon 64 X2 4400+ |
Released April, 2005
Intel Pentium D 820
- 2.8 GHz
- Dual core
Reasons to buy the Intel Pentium D 820
![]() | Much more l2 cache 2 MB | ![]() | Significantly higher clock speed 2.8 GHz |
![]() | Much better overclocked clock speed (Air) 3.52 GHz | ![]() | Much more l2 cache per core 1 MB/core |
VS
First seen on January, 2013
AMD Athlon 64 X2 4400+
- 2.3 GHz
- Dual core
Reasons to buy the AMD Athlon 64 X2 4400+
![]() | Supports dynamic frequency scaling Yes | ![]() | Has virtualization support Yes |
![]() | Much lower typical power consumption 52.81W | ![]() | Significantly lower annual home energy cost 15.66 $/year |
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Differences What are the advantages of each
| |||||||
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 | |||
---|---|---|---|---|---|---|---|
Significantly higher clock speed | 2.8 GHz | vs | 2.3 GHz | More than 20% higher clock speed | |||
Much better overclocked clock speed (Air) | 3.52 GHz | vs | 2.75 GHz | Around 30% better overclocked clock speed (Air) | |||
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 (Water) | 4.25 GHz | vs | 3.13 GHz | More than 35% better overclocked clock speed (Water) | |||
| |||||||
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 | |||
Has virtualization support | Yes | vs | No | Somewhat common; Boosts performance of virtual machines | |||
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 |
Benchmarks Real world tests of Pentium D 820 vs Athlon 64 X2 4400+
GeekBench 3 (Multi-core) Data courtesy Primate Labs
Pentium D 820
1,378
Athlon 64 X2 4400+
2,435
GeekBench 3 (Single core) Data courtesy Primate Labs
Pentium D 820
788
Athlon 64 X2 4400+
1,282
GeekBench 3 (AES single core) Data courtesy Primate Labs
Pentium D 820
100,200 MB/s
Athlon 64 X2 4400+
85.5 MB/s
GeekBench (32-bit) Data courtesy Primate Labs
Pentium D 820
1,268
Athlon 64 X2 4400+
1,629
GeekBench (64-bit) Data courtesy Primate Labs
Pentium D 820
1,577
Athlon 64 X2 4400+
2,808
GeekBench
Pentium D 820
2,414
Athlon 64 X2 4400+
2,808
Specifications Full list of technical specs
summary | Pentium D 820 | vs | Athlon 64 X2 4400+ |
---|---|---|---|
Clock speed | 2.8 GHz | 2.3 GHz | |
Cores | Dual core | Dual core | |
Socket type | |||
LGA 775 | |||
AM2 | |||
939 | |||
features | |||
Has a NX bit | Yes | Yes | |
Has virtualization support | No | Yes | |
Instruction set extensions | |||
SSE2 | |||
MMX | |||
SSE3 | |||
SSE | |||
3DNow! | |||
Supports dynamic frequency scaling | No | Yes |
details | Pentium D 820 | vs | Athlon 64 X2 4400+ |
---|---|---|---|
Threads | 2 | 2 | |
L2 cache | 2 MB | 1 MB | |
L2 cache per core | 1 MB/core | 0.5 MB/core | |
Manufacture process | 90 nm | 90 nm | |
Max CPUs | 1 | 1 | |
overclocking | |||
Overclocked clock speed | 3.52 GHz | 2.75 GHz | |
Overclocked clock speed (Water) | 4.25 GHz | 3.13 GHz | |
PassMark (Overclocked) | 908.7 | 1,605.4 | |
Overclocked clock speed (Air) | 3.52 GHz | 2.75 GHz | |
power consumption | |||
TDP | 95W | 65W | |
Annual home energy cost | 22.89 $/year | 15.66 $/year | |
Annual commercial energy cost | 83.22 $/year | 56.94 $/year | |
Performance per watt | 0.94 pt/W | 0.89 pt/W | |
Typical power consumption | 77.19W | 52.81W |
Intel Pentium D 820 ![]() | AMD Athlon 64 X2 4400+ ![]() |
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