Intel Core i7-820QM vs Intel Core i7-640UM
Intel Core i7-820QM
Intel Core i7-640UM
$305
|
4 Cores
8 Threads
1.73GHz Clock
|
2 Cores
4 Threads
1.2GHz Clock
|
|
Socket
PGA 988
|
Socket
BGA 1288
|
|
iGPU
No GPU
- -
|
iGPU
HD 500MHz Gen 5
100 GFLOPS FP32
|
GB6 Single-Core
|
|
Core i7-820QM - GB6S 385
x1.26
Core i7-640UM - GB6S 305
x1
GB6 Multi-Core
|
|
Core i7-820QM - GB6M 975
x2.17
Core i7-640UM - GB6M 450
x1
|
|
Core i7-820QM - 21.3GB/s
x1.66
Core i7-640UM - 12.8GB/s
x1
|
|
Core i7-820QM - 45W
x2.5
Core i7-640UM - 18W
x1
|
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
|
Codename
Arrandale
|
|
Market Segment
Laptop
|
Market Segment
Laptop
|
|
Release Date
9/1/2009
|
Release Date
1/1/2010
|
|
Foundry
Intel
-
|
Foundry
Intel
Intel (iGPU Die)
|
|
Node
45nm
-
|
Node
32nm
45nm (iGPU Die)
|
|
Die Size
296 mm²
-
|
Die Size
81 mm²
114 mm² (iGPU Die)
|
|
Transistor Count
774 Million
-
|
Transistor Count
382 Million
177 Million (iGPU Die)
|
|
4 Cores
|
2 Cores
|
|
8 Threads
|
4 Threads
|
|
1.73GHz
3.06GHz Boost
13x Multiplier
|
1.2GHz
2.27GHz Boost
9x Multiplier
|
|
Overclocking
Locked
Voltage
0.65V Min
1.4V Max
|
Overclocking
Locked
Voltage
0.73V 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
8MB Shared
16-way set associative
|
L3
4MB 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
667MHz
Transfer Rate
1333MT/s
|
Clock
400MHz
Transfer Rate
800MT/s
|
|
Bandwidth/Channel
10.7GB/s
Bandwidth
21.3GB/s
|
Bandwidth/Channel
6.4GB/s
Bandwidth
12.8GB/s
|
|
TDP
45W
|
TDP
18W
|
|
Temp
100°C Max
|
Temp
105°C Max
|
|
Included Cooler
|
Included Cooler
|
|
PCIe 2.0 x16 Lanes
|
PCIe 2.0 x16 Lanes
|
|
No GPU
-
-
- -
|
HD 500MHz Gen 5
96 Shaders
500MHz
100 GFLOPS FP32
|
|
No NPU
|
No NPU
|
|
No Cellular
|
No Cellular
|
Copy Link