Core i7-840QM vs Core i7-620M

Core i7-840QM
Core i7-620M
4 Cores
8 Threads
1.86GHz Clock
2 Cores
4 Threads
2.66GHz Clock
Socket
PGA 988
Socket
BGA 1288
iGPU
No GPU
iGPU
HD 766MHz Gen 5
GB6S 365
10%
GB6S 440
12%
GB6M 995
4%
GB6M 815
3%
CB23S - N/A
0%
CB23S - N/A
0%
CB23M - N/A
0%
CB23M - N/A
0%
Manufacturer
Intel
Manufacturer
Intel
Architecture
Nehalem
Architecture
Westmere
Family
Core 1st Gen
Family
Core 1st Gen
Instruction Set (ISA)
x86-64
Instruction Set (ISA)
x86-64
Codename
Clarksfield
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-
-
-
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-
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-
Codename
Arrandale
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-
-
-
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Market Segment
Laptop
Market Segment
Laptop
Release Date
6/1/2010
Release Date
1/1/2010
Foundry
Intel
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-
-
Foundry
Intel
Intel (iGPU Die)
-
-
Node
45nm
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-
-
Node
32nm
45nm (iGPU Die)
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-
Die Size
296 mm²
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-
-
Die Size
81 mm²
114 mm² (iGPU Die)
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-
Transistor Count
774 Million
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-
-
Transistor Count
382 Million
177 Million (iGPU Die)
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-
4 Cores
-
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-
2 Cores
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-
-
8 Threads
-
-
-
4 Threads
-
-
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-
1.86GHz
3.2GHz Boost
14x Multiplier
-
2.66GHz
3.3GHz Boost
20x Multiplier
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-
-
-
-
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-
-
-
-
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-
Overclocking
Locked
Voltage
0.65V Min
1.4V Max
Overclocking
Locked
Voltage
0.78V Min
1.4V Max
Type
DMI
Type
DMI
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-
-
-
-
-
-
-
Transfer Rate
2.5GT/s
Transfer Rate
2.5GT/s
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-
-
-
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
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-
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L1 Instruction
32KB/Core
4-way set associative
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-
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L1 Data
32KB/Core
8-way set associative
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-
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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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-
-
-
-
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-
-
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L3
-
8MB Shared
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16-way set associative
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-
-
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L3
-
4MB Shared
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16-way set associative
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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
45W
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-
-
TDP
35W
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-
-
Temp
100°C Max
-
Temp
105°C Max
-
Included Cooler
Not Included
Included Cooler
Not Included
PCIe 2.0 x16 Lanes
PCIe 2.0 x16 Lanes
No GPU
-
-
HD 766MHz Gen 5
96 Shaders
766MHz
No NPU
-
No NPU
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-
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-
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No Cellular
No Cellular
Change Results