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| Intel Core i7 680UM vs 640M |
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Differences What are the advantages of each
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CPUBoss is not aware of any important advantages of the 680UM vs the 640M. | |||||||
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CPUBoss is not aware of any important advantages of the 640M vs the 680UM. | |||||||
Benchmarks Real world tests of Core i7 680UM vs 640M
GeekBench 3 (Multi-core) Data courtesy Primate Labs
Core i7 680UM
2,254.5
Core i7 640M
4,385
GeekBench 3 (Single core) Data courtesy Primate Labs
Core i7 680UM
1,335.5
Core i7 640M
2,187
GeekBench 3 (AES single core) Data courtesy Primate Labs
Core i7 680UM
1,150 MB/s
Core i7 640M
1,570,000 MB/s
GeekBench (32-bit) Data courtesy Primate Labs
Core i7 680UM
2,373
Core i7 640M
4,158
GeekBench
Core i7 680UM
3,254
Core i7 640M
6,359
Specifications Full list of technical specs
summary | Core i7 680UM | vs | 640M |
---|---|---|---|
Clock speed | 1.46 GHz | 2.8 GHz | |
Turbo clock speed | 2.53 GHz | 3.46 GHz | |
Cores | Dual core | Dual core | |
Socket type | |||
BGA 1288 | |||
rPGA 988A | |||
Is unlocked | No | No | |
features | |||
Has a NX bit | Yes | Yes | |
Supports trusted computing | Yes | Yes | |
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 | 18W | 35W | |
Annual home energy cost | 4.34 $/year | 8.43 $/year | |
Performance per watt | 3.06 pt/W | 18.3 pt/W | |
Typical power consumption | 14.63W | 28.44W | |
bus | |||
Architecture | DMI | DMI | |
Number of links | 1 | 1 | |
Transfer rate | 2,500 MT/s | 2,500 MT/s |
details | Core i7 680UM | vs | 640M |
---|---|---|---|
Architecture | x86-64 | x86-64 | |
Threads | 4 | 4 | |
L2 cache | 1 MB | 1 MB | |
L2 cache per core | 0.5 MB/core | 0.5 MB/core | |
L3 cache | 4 MB | 4 MB | |
L3 cache per core | 2 MB/core | 2 MB/core | |
Manufacture process | 32 nm | 32 nm | |
Transistor count | 382,000,000 | 382,000,000 | |
Max CPUs | 1 | 1 | |
Clock multiplier | 11 | 21 | |
overclocking | |||
Overclocked clock speed | 1.47 GHz | 3.37 GHz | |
Overclocked clock speed (Water) | 1.47 GHz | 2.8 GHz | |
Overclocked clock speed (Air) | 1.47 GHz | 3.37 GHz | |
integrated graphics | |||
GPU | GPU | GPU | |
Label | Intel® HD Graphics | Intel® HD Graphics | |
Number of displays supported | 2 | 2 | |
GPU clock speed | 166 MHz | 500 MHz | |
Turbo clock speed | 500 MHz | 766 MHz | |
memory controller | |||
Memory controller | Built-in | Built-in | |
Memory type | |||
DDR3-1066 | |||
DDR3-800 | |||
DDR3 | |||
Channels | Dual Channel | Dual Channel | |
Supports ECC | No | No | |
Maximum bandwidth | 12,800 MB/s | 17,066.66 MB/s | |
Maximum memory size | 8,192 MB | 8,192 MB |
Intel Core i7 680UM ![]() | Intel Core i7 640M ![]() |
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