Core i7-640M vs Core i7-820QM
Core i7-640M
Core i7-820QM
|
2 Cores
4 Threads
2.8GHz Clock
|
4 Cores
8 Threads
1.73GHz Clock
|
|
Socket
BGA 1288
|
Socket
PGA 988
|
|
iGPU
HD 766MHz Gen 5
|
iGPU
No GPU
|
|
GB6S 420
11%
|
GB6S 385
10%
|
|
GB6M 800
3%
|
GB6M 975
4%
|
|
CB23S - N/A
0%
|
CB23S - N/A
0%
|
|
CB23M - N/A
0%
|
CB23M - N/A
0%
|
|
Manufacturer
Intel
|
Manufacturer
Intel
|
|
Architecture
Westmere
|
Architecture
Nehalem
|
|
Family
Core 1st Gen
|
Family
Core 1st Gen
|
|
Instruction Set (ISA)
x86-64
|
Instruction Set (ISA)
x86-64
|
|
Codename
Arrandale
-
-
-
-
-
-
-
-
|
Codename
Clarksfield
-
-
-
-
-
-
-
-
|
|
Market Segment
Laptop
|
Market Segment
Laptop
|
|
Release Date
9/1/2010
|
Release Date
9/1/2009
|
|
Foundry
Intel
Intel (iGPU Die)
-
-
|
Foundry
Intel
-
-
-
|
|
Node
32nm
45nm (iGPU Die)
-
-
|
Node
45nm
-
-
-
|
|
Die Size
81 mm²
114 mm² (iGPU Die)
-
-
|
Die Size
296 mm²
-
-
-
|
|
Transistor Count
382 Million
177 Million (iGPU Die)
-
-
|
Transistor Count
774 Million
-
-
-
|
|
2 Cores
-
-
-
|
4 Cores
-
-
-
|
|
4 Threads
-
-
-
|
8 Threads
-
-
-
|
|
-
2.8GHz
3.5GHz Boost
21x Multiplier
|
-
1.73GHz
3.1GHz Boost
13x Multiplier
|
|
-
-
-
|
-
-
-
|
|
-
-
-
|
-
-
-
|
|
Overclocking
Locked
Voltage
0.78V Min
1.4V Max
|
Overclocking
Locked
Voltage
0.65V Min
1.4V Max
|
|
Type
DMI
|
Type
DMI
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
Transfer Rate
2.5GT/s
|
Transfer Rate
2.5GT/s
|
|
-
-
|
-
-
|
|
Lanes
4
|
Lanes
4
|
|
Bandwidth
1.25GB/s
|
Bandwidth
1.25GB/s
|
|
Bi-directional
2.5GB/s
|
Bi-directional
2.5GB/s
|
|
L0 Instruction
-
-
|
L0 Instruction
-
-
|
|
L0 Data
-
-
|
L0 Data
-
-
|
|
L1 Instruction
32KB/Core
4-way set associative
-
-
-
-
|
L1 Instruction
32KB/Core
4-way set associative
-
-
-
-
|
|
L1 Data
32KB/Core
8-way set associative
-
-
-
-
|
L1 Data
32KB/Core
8-way set associative
-
-
-
-
|
|
L2
256KB/Core
8-way set associative
-
-
-
-
-
-
-
-
-
-
|
L2
256KB/Core
8-way set associative
-
-
-
-
-
-
-
-
-
-
|
|
L3
-
4MB Shared
-
16-way set associative
-
-
-
-
-
|
L3
-
8MB Shared
-
16-way set associative
-
-
-
-
-
|
|
-
-
-
-
|
-
-
-
-
|
|
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
533MHz
Transfer Rate
1066MT/s
|
Clock
667MHz
Transfer Rate
1333MT/s
|
|
Bandwidth/Channel
8.5GB/s
Bandwidth
17.1GB/s
|
Bandwidth/Channel
10.7GB/s
Bandwidth
21.3GB/s
|
|
TDP
35W
-
-
-
|
TDP
45W
-
-
-
|
|
Temp
105°C Max
-
|
Temp
100°C Max
-
|
|
Included Cooler
Not Included
|
Included Cooler
Not Included
|
|
PCIe 2.0 x16 Lanes
|
PCIe 2.0 x16 Lanes
|
|
HD 766MHz Gen 5
96 Shaders
766MHz
|
No GPU
-
-
|
|
No NPU
-
|
No NPU
-
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
-
-
|
-
-
|
|
No Cellular
|
No Cellular
|
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