Core i5-8250U vs Core i5-8257U

Core i5-8250U
Core i5-8257U
4 Cores
8 Threads
1.6GHz Clock
4 Cores
8 Threads
1.4GHz Clock
Socket
BGA 1356
Socket
BGA 1528
iGPU
UHD 620 1100MHz
iGPU
Iris Plus 645 1050MHz
GB6S 1,100
29%
GB6S 1,225
32%
GB6M 3,400
14%
GB6M 4,005
17%
CB23S - N/A
0%
CB23S - N/A
0%
CB23M - N/A
0%
CB23M - N/A
0%
Manufacturer
Intel
Manufacturer
Intel
Architecture
Skylake
Architecture
Skylake
Family
Core 8th Gen
Family
Core 8th Gen
Instruction Set (ISA)
x86-64
Instruction Set (ISA)
x86-64
Codename
Kaby Lake-R
-
Kaby Lake-R-4C-GT2
-
-
-
-
-
-
Codename
Coffee Lake-U
-
Coffee Lake-4C-GT3
-
-
-
-
-
-
Market Segment
Laptop
Market Segment
Laptop
Release Date
8/21/2017
Release Date
4/5/2018
Foundry
Intel
-
-
-
Foundry
Intel
Intel (PCH Die)
Intel (eDRAM Die)
-
Node
14nm+
-
-
-
Node
14nm++
14nm (PCH Die)
14nm (eDRAM Die)
-
Die Size
123 mm²
-
-
-
Die Size
148 mm²
37 mm² (PCH Die)
63 mm² (eDRAM Die)
-
Transistor Count
2.1 Billion
-
-
-
Transistor Count
2.5 Billion
-
-
-
4 Cores
-
-
-
4 Cores
-
-
-
8 Threads
-
-
-
8 Threads
-
-
-
-
1.6GHz
3.4GHz Boost
-
-
1.4GHz
3.9GHz Boost
-
-
-
-
-
-
-
-
-
-
-
-
-
Overclocking
Locked
-
-
-
Overclocking
Locked
-
-
-
Type
OPI
Type
DMI
-
-
-
-
-
-
-
-
Transfer Rate
4GT/s
Transfer Rate
8GT/s
-
-
-
-
Lanes
4
Lanes
4
Bandwidth
2GB/s
Bandwidth
4GB/s
Bi-directional
4GB/s
Bi-directional
8GB/s
L0 Instruction
-
-
L0 Instruction
-
-
L0 Data
-
-
L0 Data
-
-
L1 Instruction
32KB/Core
8-way set associative
-
-
-
-
L1 Instruction
32KB/Core
8-way set associative
-
-
-
-
L1 Data
32KB/Core
8-way set associative
-
-
-
-
L1 Data
32KB/Core
8-way set associative
-
-
-
-
L2
256KB/Core
4-way set associative
-
-
-
-
-
-
-
-
-
-
L2
256KB/Core
4-way set associative
-
-
-
-
-
-
-
-
-
-
L3
-
6MB Shared
-
16-way set associative
-
-
-
-
-
L3
-
6MB Shared
-
16-way set associative
-
-
-
-
-
-
-
-
-
L4
128MB Shared
-
-
Channels
2
Channels
2
Max Memory
32GB
Max Memory
64GB
ECC
Not Supported
ECC
Not Supported
Bus Width/Channel
64Bit
Bus Width
128Bit
Bus Width/Channel
64Bit
Bus Width
128Bit
Clock
1067MHz
Transfer Rate
2133MT/s
Clock
1333MHz
Transfer Rate
2666MT/s
Bandwidth/Channel
17.1GB/s
Bandwidth
34.1GB/s
Bandwidth/Channel
21.3GB/s
Bandwidth
42.7GB/s
TDP
15W
10W cTDP Down
25W cTDP Up
-
TDP
15W
-
-
-
Temp
100°C Max
-
Temp
100°C Max
-
Included Cooler
Not Included
Included Cooler
Not Included
PCIe 3.0 x12 Lanes
PCIe 3.0 x16 Lanes
UHD 620 1100MHz
192 Shaders
1100MHz
Iris Plus 645 1050MHz
384 Shaders
1050MHz
No NPU
-
No NPU
-
-
-
-
-
-
-
-
-
-
-
-
-
No Cellular
No Cellular
Change Results