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Intel Core i5-8250U

Intel 8250U

英特尔酷睿i5-8250U是基于Kaby Lake-Refresh一代的笔记本电脑和超级本的高能效四核SoC,于2017年8月宣布。与其前身的Core i5-7200U的双核不同, i7-8250U配备四个内核,但基频较低,为1.6 GHz。 Turbo Boost最高可达3.4 GHz,因此也可提供良好的短期单核速度。 GPU现在命名为Intel UHD Graphics 620,但与Intel HD Graphics 620完全相同。集成内存控制器支持DDR4-2400 / LPDDR3-2133和双通道内存。

架构

与Skylake相比,英特尔基本上使用相同的微架构,因此每MHz性能没有差别。制造商仅对速度转换技术进行了重新设计,以便更快地动态调整电压和时钟,改进的14nm工艺允许更高的频率,并且效率比以前更高。

性能

根据英特尔的说法,新的四核比其双核前代型号快40%。由于降低了TDP和相同的14nm +工艺,长期性能和节流行为将取决于笔记本电脑的设计。因此,在需要更长CPU负载的应用中,较旧的35瓦四核模具应该更快。

图形

集成的Intel UHD Graphics 620(Intel Gen 9.5)未受到第8代Kaby Lake芯片的影响。凭借快速双通道内存,它可以达到独显GeForce 920M的性能。

与Skylake相反,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。 1月份宣布的双核Kaby Lake处理器也应该支持HDCP 2.2。

能耗

该芯片采用改进的14nm工艺制造,采用FinFET晶体管(14nm +),与第7代Kaby Lake处理器相同。英特尔仍指定15瓦的TDP,这是ULV芯片的典型特征。根据使用场景,TDP可在7.5(cTDP Down)和25 W之间变化。

SeriesIntel Core i5
CodenameKaby Lake Refresh
Series: Core i5 Kaby Lake Refresh
Intel Core i5-8350U1700 - 3600 MHz4 / 86 MB
» Intel Core i5-8250U1600 - 3400 MHz4 / 86 MB
Clock Rate1600 - 3400 MHz
Level 1 Cache256 KB
Level 2 Cache1 MB
Level 3 Cache6 MB
Number of Cores / Threads4 / 8
Max. Power Consumption (TDP = Thermal Design Power)15 Watt
Manufacturing Technology14 nm
SocketBGA1356
FeaturesDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI
GPUIntel UHD Graphics 620 (300 - 1100 MHz)
64 Bit64 Bit support
Starting Price$297 U.S.
Announcement Date08/21/2017

Benchmarks

Cinebench R15 - CPU Multi 64Bit
min: 320     avg: 570.1     median: 556.5 (13%)     max: 730 Points
Cinebench R15 - CPU Single 64Bit
min: 81     avg: 141     median: 144 (66%)     max: 147 Points
Cinebench R11.5 - CPU Multi 64Bit
min: 3.15     avg: 6     median: 5.9 (22%)     max: 7.76 Points
Cinebench R11.5 - CPU Single 64Bit
min: 0.91     avg: 1.6     median: 1.6 (67%)     max: 1.79 Points
Cinebench R10 - Rendering Single 32Bit
min: 5349     avg: 5633.6     median: 5534 (61%)     max: 8356 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 14148     avg: 18247.8     median: 17923 (36%)     max: 22097 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 11245     avg: 23540.5     median: 23820.5 (31%)     max: 28932 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 5163     avg: 6955.5     median: 7140.5 (69%)     max: 8153 Points
wPrime 2.0x - 1024m *
min: 243.336     avg: 310.3     median: 314.7 (4%)     max: 402.09 seconds
wPrime 2.0x - 32m *
min: 7.394     avg: 9.1     median: 8.4 (2%)     max: 13.753 seconds
WinRAR - Result
min: 3632     avg: 3991     median: 3991 (47%)     max: 4350 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 29.5     avg: 32.8     median: 32 (22%)     max: 37.7 fps
X264 HD Benchmark 4.0 - Pass 1
min: 124.58     avg: 139.3     median: 137.5 (51%)     max: 157.6 fps
HWBOT x265 Benchmark v2.2 - 4k Preset
4 fps (22%)
TrueCrypt - Serpent Mean 100MB
min: 0.336     avg: 0.4     median: 0.4 (0%)     max: 0.415 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.58     avg: 0.7     median: 0.7 (23%)     max: 0.714 GB/s
TrueCrypt - AES Mean 100MB
min: 2.9     avg: 3.5     median: 3.5 (18%)     max: 4 GB/s
Blender 2.79 *
913.2 Seconds (15%)
3DMark 06 - CPU
min: 4775     avg: 6370.3     median: 6348 (18%)     max: 7575 Points
Super Pi mod 1.5 XS 1M *
min: 10.9     avg: 11.8     median: 11 (2%)     max: 15.77 Seconds
Super Pi mod 1.5 XS 2M *
min: 24.9     avg: 26.4     median: 25.2 (1%)     max: 34.28 Seconds
Super Pi Mod 1.5 XS 32M *
min: 601     avg: 632.5     median: 614.3 (3%)     max: 782.59 Seconds
3DMark Vantage - P CPU no PhysX 1280x1024
min: 15198     avg: 20933     median: 21899 (37%)     max: 24736 Points
3DMark 11 - Performance Physics 1280x720
min: 3233     avg: 6346.3     median: 6304.5 (34%)     max: 8014 points
3DMark - Ice Storm Standard Physics 1280x720
min: 24077     avg: 44472.2     median: 45968.5 (30%)     max: 50962 Points
3DMark - Ice Storm Extreme Physics 1920x1080
min: 24155     avg: 44475.7     median: 45335 (54%)     max: 50910 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 34294     avg: 49400.1     median: 50444 (58%)     max: 52050 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 3113     avg: 5933.4     median: 5874 (15%)     max: 7695 Points
3DMark - Fire Strike Physics 1920x1080
min: 4495     avg: 8563.6     median: 8420 (31%)     max: 10727 Points
Geekbench 3 - 32 Bit Multi-Core Score
min: 10893     avg: 12605.7     median: 12742 (41%)     max: 13553 Points
Geekbench 3 - 32 Bit Single-Core Score
min: 3148     avg: 3301.7     median: 3242 (69%)     max: 3503 Points
Geekbench 3 - 64 Bit Multi-Core Score
min: 14363     avg: 14407.5     median: 14407.5 (38%)     max: 14452 Points
Geekbench 3 - 64 Bit Single-Core Score
min: 3759     avg: 3828.5     median: 3828.5 (78%)     max: 3898 Points
Geekbench 4.0 - Compute OpenCL Score
min: 17820     avg: 25572.4     median: 21928 (10%)     max: 47987 Points
Geekbench 4.0 - 64 Bit Multi-Core Score
min: 10751     avg: 12210     median: 12131 (44%)     max: 13486 Points
Geekbench 4.0 - 64 Bit Single-Core Score
min: 3924     avg: 4075.7     median: 4029 (70%)     max: 4243 Points