Intel Core i7-2657M vs Intel Core i7-640M
Intel Core i7-2657M
Intel Core i7-640M
$346
|
2 Cores
4 Threads
1.6GHz Clock
|
2 Cores
4 Threads
2.8GHz Clock
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|
Socket
BGA 1023
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Socket
BGA 1288
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|
iGPU
HD 3000 1000MHz
190 GFLOPS FP32
|
iGPU
HD 766MHz Gen 5
150 GFLOPS FP32
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Manufacturer
Intel
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Manufacturer
Intel
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Architecture
Sandy Bridge
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Architecture
Westmere
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Family
Core 2nd Gen
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Family
Core 1st Gen
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Instruction Set (ISA)
x86-64
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Instruction Set (ISA)
x86-64
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Codename
Sandy Bridge
Sandy Bridge-H-2
Sandy Bridge-2C-GT2
-
-
-
-
-
-
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Codename
Arrandale
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-
-
-
-
-
-
-
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Market Segment
Laptop
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Market Segment
Laptop
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Release Date
2/1/2011
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Release Date
9/1/2010
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|
Foundry
Intel
-
-
-
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Foundry
Intel
Intel (iGPU Die)
-
-
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Node
32nm
-
-
-
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Node
32nm
45nm (iGPU Die)
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-
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Die Size
149 mm²
-
-
-
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Die Size
81 mm²
114 mm² (iGPU Die)
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-
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Transistor Count
624 Million
-
-
-
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Transistor Count
382 Million
177 Million (iGPU Die)
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-
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2 Cores
-
-
-
|
2 Cores
-
-
-
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4 Threads
-
-
-
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4 Threads
-
-
-
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-
1.6GHz
2.7GHz Boost
-
|
-
2.8GHz
3.46GHz Boost
21x Multiplier
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|
-
-
-
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-
-
-
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-
-
-
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-
-
-
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Overclocking
Locked
-
-
-
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Overclocking
Locked
Voltage
0.78V Min
1.4V Max
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|
Type
DMI
|
Type
DMI
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|
-
-
|
-
-
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-
-
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-
-
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Transfer Rate
5GT/s
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Transfer Rate
2.5GT/s
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|
-
-
|
-
-
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Lanes
4
|
Lanes
4
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|
Bandwidth
2.5GB/s
|
Bandwidth
1.25GB/s
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Bi-directional
5GB/s
|
Bi-directional
2.5GB/s
|
|
L0 Instruction
-
-
|
L0 Instruction
-
-
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L0 Data
-
-
|
L0 Data
-
-
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|
L1 Instruction
32KB/Core
8-way set associative
-
-
-
-
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L1 Instruction
32KB/Core
4-way set associative
-
-
-
-
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L1 Data
32KB/Core
8-way set associative
-
-
-
-
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L1 Data
32KB/Core
8-way set associative
-
-
-
-
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L2
256KB/Core
8-way set associative
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-
-
-
-
-
-
-
-
-
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L2
256KB/Core
8-way set associative
-
-
-
-
-
-
-
-
-
-
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L3
-
4MB Shared
-
16-way set associative
-
-
-
-
-
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L3
-
4MB Shared
-
16-way set associative
-
-
-
-
-
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|
-
-
-
-
|
-
-
-
-
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Channels
2
|
Channels
2
|
|
Max Memory
8GB
|
Max Memory
8GB
|
|
ECC
Not Supported
|
ECC
Not Supported
|
|
Bus Width/Channel
64Bit
Bus Width
128Bit
|
Bus Width/Channel
64Bit
Bus Width
128Bit
|
|
Clock
667MHz
Transfer Rate
1333MT/s
|
Clock
533MHz
Transfer Rate
1066MT/s
|
|
Bandwidth/Channel
10.7GB/s
Bandwidth
21.3GB/s
|
Bandwidth/Channel
8.5GB/s
Bandwidth
17.1GB/s
|
|
TDP
17W
-
-
-
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TDP
35W
-
-
-
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Temp
100°C Max
-
|
Temp
105°C Max
-
|
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Included Cooler
Not Included
|
Included Cooler
Not Included
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PCIe 2.0 x16 Lanes
|
PCIe 2.0 x16 Lanes
|
|
HD 3000 1000MHz
96 Shaders
1000MHz
190 GFLOPS FP32
|
HD 766MHz Gen 5
96 Shaders
766MHz
150 GFLOPS FP32
|
|
No NPU
-
|
No NPU
-
|
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-
-
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-
-
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-
|
-
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-
-
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-
-
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No Cellular
|
No Cellular
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