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Intel Core i5-8257U

英特尔酷睿i5-8257U是基于Coffee Lake架构的笔记本电脑四核SoC,该处理器于2019年中期在新入门级MacBook Pro 13中发布。相比其前身,CPU现在是具有超线程功能的四核支持最多同时执行8个线程。基本频率仅为1.4 GHz,但Turbo达到3.9 GHz。它还配备了具有128 MB eDRAM的Intel Iris Plus Graphics 645 GPU,双通道内存控制器(DDR4)以及VP9和H.265视频解码以及编码。该芯片仍采用FinFET 14nm工艺制造。

与具有eDRAM和15瓦的更快Core i7-8557U型号相比,i5-8257U仅具有6 MB智能缓存和Iris Plus GPU的最低的频率。

架构

与Kaby Lake相比,英特尔基本上使用相同的微体系架构,因此每MHz性能没有差异。制造商仅对速度转换技术进行了重新设计,以实现电压和时钟的更快动态调整,而经过改进的14纳米工艺可提供更高的频率和更高的效率。

性能

多亏了相对较高的Turbo Boost频率,单线程性能应该非常好,但仍落后于速度更快的i7。与以前的双核版本相比,借助额外的内核,全核性能明显更好。在持续的工作负载中,性能通常受TDP和冷却的限制。在这些工作负载中,与Core i7的差异也更小。

图形

集成的英特尔Iris Plus 645图形芯片是Coffee Lake GPU(英特尔第9.5代)的GT3e版本。它具有48个以300-1050 MHz运行的执行单元,并且由于具有快速的eDRAM缓存,其性能可与GeForce 930M或940MX相媲美。但是,与旧的Iris Plus 650相比,没有任何重大改进,因此现代游戏通常无法流畅运行,或者只能分别在最低或中等设置下运行。

与Skylake不同,Kaby Lake现在还支持具有10位色深的H.265 / HEVC Main 10以及Google的VP9编解码器。一月份宣布的双核Kaby Lake处理器也应该支持HDCP 2.2。

能耗

该芯片采用FinFET改进的14nm ++工艺制造,从而进一步提高了效率。英特尔将TDP指定为15瓦,因此适合轻薄型笔记本电脑。

SeriesIntel Coffee Lake
CodenameCoffee Lake-U
Series: Coffee Lake Coffee Lake-U
Intel Core i7-8559U2700 - 4500 MHz4 / 88 MB
Intel Core i7-8557U1700 - 4500 MHz4 / 88 MB
Intel Core i5-8269U2600 - 4200 MHz4 / 86 MB
Intel Core i5-8279U2400 - 4100 MHz4 / 86 MB
Intel Core i5-8259U2300 - 3800 MHz4 / 86 MB
» Intel Core i5-8257U1400 - 3900 MHz4 / 86 MB
Intel Core i3-8109U3000 - 3600 MHz2 / 44 MB
Clock Rate1400 - 3900 MHz
Level 1 Cache256 KB
Level 2 Cache1 MB
Level 3 Cache6 MB
Number of Cores / Threads4 / 8
Power Consumption (TDP = Thermal Design Power)15 Watt
Manufacturing Technology14 nm
Max. Temperature100 °C
SocketFCBGA1528
FeaturesDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, Intel SSE4.1, Intel SSE 4.2
GPUIntel Iris Plus Graphics 645 (300 - 1050 MHz)
64 Bit64 Bit support
Announcement Date07/10/2019
Product Link (external)Intel Coffee Lake i5-8257U

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU
44.5 pt (49%)
AMD E1-2100 -91%
...
AMD Ryzen 5 3580U -9%
Intel Core i5-8265U -4%
Intel Core i5-1035G4 -3%
Intel Core i5-8365U 0%
Intel Core i5-8257U
Intel Core i5-1035G7 1%
Intel Core i5-1035G1 1%
Intel Core i7-7700HQ 2%
Intel Core i3-9100F 5%
Intel Core i7-1065G7 7%
...
0%
100%
Cinebench R20 - CPU (Single Core)
388 Points (71%)
Cinebench R20 - CPU (Multi Core)
1494 Points (15%)
Cinebench R15 - CPU Multi 64Bit
638 Points (15%)
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410420430440450460470480490500510520530540550560570580590600610620630640Tooltip
Cinebench R15 - CPU Single 64Bit
159 Points (71%)
7-Zip 18.03 - 7z b 4
19620 MIPS (20%)
7-Zip 18.03 - 7z b 4 -mmt1
4083 MIPS (27%)
HWBOT x265 Benchmark v2.2 - 4k Preset
5.3 fps (19%)
01020Tooltip
Blender 2.79 - BMW27 CPU *
714 Seconds (5%)
3DMark 11 - Performance Physics 1280x720
7866 points (36%)
3DMark - Fire Strike Physics 1920x1080
8936 Points (28%)
3DMark - Time Spy CPU 2560x1440
2740 Points (19%)
Geekbench 4.4 - 64 Bit Single-Core Score
4608 Points (73%)
Geekbench 4.4 - 64 Bit Multi-Core Score
16580 Points (29%)
Geekbench 5 - 64 Bit Single-Core Score
989 Points (69%)
Geekbench 5 - 64 Bit Multi-Core Score
4181 Points (26%)
Mozilla Kraken 1.1 - Total Score *
901 ms (2%)
Octane V2 - Total Score
40071 Points (76%)
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

v1.14

:: No reviews found for this CPU (yet).

»移动处理器 对比
所有移动处理器的对比


»移动处理器 基准测试
所有已有笔记本电脑中使用的处理器的基准测试成绩 (桌面处理器或移动处理器)

Other CPUs of the series Intel Coffee Lake

» Intel Coffee Lake i9-9900KS
   4 GHz / 2 MB L2 + 16 MB L3
» Intel Coffee Lake i9-9900K
   3.6 GHz / 2 MB L2 + 16 MB L3
» Intel Coffee Lake i9-9980HK
   2.4 GHz / 2 MB L2 + 16 MB L3
» Intel Coffee Lake i7-9700K
   3.6 GHz / 2 MB L2 + 12 MB L3
» Intel Coffee Lake i9-9880H
   2.3 GHz / 2 MB L2 + 16 MB L3
» Intel Coffee Lake i7-8086K
   3.7 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i7-8700K
   3.7 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i7-9700
   3 GHz / 2 MB L2 + 12 MB L3
» Intel Coffee Lake i9-8950HK
   2.9 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake E-2186M
   2.9 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake E-2276M
   2.8 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake E-2176G
   3.7 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i7-8700
   3.2 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i5-9600K
   3.7 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i9-9900T
   2.1 GHz / 2 MB L2 + 16 MB L3
» Intel Coffee Lake i7-9850H
   2.6 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i7-9750H
   2.6 GHz + 12 MB L3
» Intel Coffee Lake E-2176M
   2.7 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i7-8850H
   2.6 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i5-8600K
   3.6 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i5-8500
   3 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i7-8750H
   2.2 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i5-8400
   2.8 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i5-8500T
   2.1 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i5-9400H
   2.5 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-9300HF
   2.4 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-9300H
   2.4 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-8400H
   2.5 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i7-8559U
   2.7 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-8300H
   2.3 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-9400F
   2.9 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i3-9100F
   3.6 GHz / 1 MB L2 + 6 MB L3
» Intel Coffee Lake i7-8557U
   1.7 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-8269U
   2.6 GHz / 1 MB L2 + 6 MB L3
» Intel Coffee Lake i5-8279U
   2.4 GHz / 1 MB L2 + 6 MB L3
» Intel Coffee Lake i5-8259U
   2.3 GHz / 1 MB L2 + 6 MB L3
» Intel Coffee Lake i5-8257U
   1.4 GHz / 1 MB L2 + 6 MB L3
» Intel Coffee Lake i3-8100H
   3 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i3-8109U
   3 GHz / 0.5 MB L2 + 4 MB L3

Surrounding CPUs

- Intel Core i7 (Desktop) 6700T
   2.8 GHz / 1 MB + 6 MB
- Intel Ice Lake i7-1065G7
   1.3 GHz / 2 MB + 8 MB
- AMD Picasso (Ryzen 3000 APU) R7 3780U
   2.3 GHz / 2 MB + 4 MB
- AMD Ryzen 5 R5 1400
   3.2 GHz / 2 MB + 8 MB
- Intel Coffee Lake i5-8259U
   2.3 GHz / 1 MB + 6 MB
» Intel Coffee Lake i5-8257U
   1.4 GHz / 1 MB L2 + 6 MB L3
+ Intel Core i7 4900MQ
   2.8 GHz / 1024 KB + 8192 KB
+ Intel Comet Lake i7-10610U
   1.8 GHz / 1024 KB + 8192 KB
+ Intel Tiger Lake i5-1145G7
   0 GHz / KB
+ Intel Comet Lake i7-10510U
   1.8 GHz / 1024 KB + 8192 KB
+ Intel Core i7 4960HQ
   2.6 GHz / 1024 KB + 6144 KB
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> Notebookcheck中文版(NBC中国) > FAQ / 小提示/ 技术参数 > 移动处理器 —— 基准测试成绩列表 > Intel Coffee Lake i5-8257U 笔记本处理器
Klaus Hinum (Update: 2020-07-28)