Notebookcheck

Intel Core i5-8250U

Intel i5-8250U

The Intel Core i5-8250U is a power efficient quad-core SoC for notebooks and Ultrabooks based on the Kaby Lake Refresh generation and was announced in August 2017. Contrary to its direct predecessor the Core i5-7200U, which were still dual-cores, the i7-8250U is equipped with four cores but at a lower base frequency of 1.6 GHz. The Turbo Boost can go up to 3,4 GHz and therefore also offer good short term single core speeds. The GPU is now named Intel UHD Graphics 620 but otherwise identical to the Intel HD Graphics 620. The integrated memory controller supports DDR4-2400 / LPDDR3-2133 and dual channel memory.

Architecture

Intel basically uses the same micro architecture compared to Skylake, so the per-MHz performance does not differ. The manufacturer only reworked the Speed Shift technology for faster dynamic adjustments of voltages and clocks, and the improved 14nm process allows much higher frequencies combined with better efficiency than before.

Performance

According to Intel, the new quad core models are up to 40% faster than their dual core predecessors. Due to the reduced TDP and the same 14nm+ process, the long term performance and throttling behavior will be interesting and depending on the laptop design. Therefore, the older 35 Watt quad-core models should be faster in applications that demand longer CPU loads.

Graphics

The integrated Intel UHD Graphics 620 (Intel Gen 9.5) is untouched from the 8th Gen Kaby Lake chips. With fast dual-channel memory it can reach the performance of a dedicated GeForce 920M.

Contrary to Skylake, Kaby lake now also supports H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The dual-core Kaby Lake processors announced in January should also support HDCP 2.2.

Power Consumption

The chip is manufactured in an improved 14nm process with FinFET transistors (14nm+), the same as the 7th Gen Kaby Lake processors. Intel still specifies the TDP with 15 Watts, which is typical for ULV chips. Depending on the usage scenario, the TDP can vary between 7.5 (cTDP Down) and 25 Watts.

SeriesIntel Kaby Lake Refresh
CodenameKaby Lake Refresh
Series: Kaby Lake Refresh Kaby Lake Refresh
Intel Core i7-8650U compare1900 - 4200 MHz4 / 88 MB
Intel Core i7-8550U compare1800 - 4000 MHz4 / 88 MB
Intel Core i5-8350U compare1700 - 3600 MHz4 / 86 MB
» Intel Core i5-8250U1600 - 3400 MHz4 / 86 MB
Intel Core i3-8130U compare2200 - 3400 MHz2 / 44 MB
Intel Pentium Gold 4417U compare2300 MHz2 / 42 MB
Clock Rate1600 - 3400 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
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

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU
39.5 pt (44%)
Cinebench R20 - CPU (Single Core)
min: 332     avg: 346     median: 351 (59%)     max: 355 Points
Cinebench R20 - CPU (Multi Core)
min: 846     avg: 1096     median: 1117 (11%)     max: 1325 Points
Cinebench R15 - CPU Multi 64Bit
min: 320     avg: 571     median: 564 (13%)     max: 730 Points
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410420430440450460470480490500510520530540550560570580590600610620630640650660670680690700710720730740Tooltip
Cinebench R15 - CPU Single 64Bit
min: 81     avg: 141     median: 144 (63%)     max: 147 Points
Cinebench R11.5 - CPU Multi 64Bit
min: 3.15     avg: 6     median: 5.9 (14%)     max: 7.76 Points
Cinebench R11.5 - CPU Single 64Bit
min: 0.91     avg: 1.6     median: 1.6 (64%)     max: 1.79 Points
Cinebench R10 - Rendering Single 32Bit
min: 5349     avg: 5631     median: 5533 (57%)     max: 8356 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 14148     avg: 18261     median: 17987 (30%)     max: 22097 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 11245     avg: 23585     median: 23873 (28%)     max: 28932 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 5163     avg: 6972     median: 7174 (67%)     max: 8153 Points
wPrime 2.10 - 1024m *
min: 243.336     avg: 309     median: 306.2 (4%)     max: 402.09 seconds
wPrime 2.10 - 32m *
min: 7.394     avg: 8.9     median: 8.1 (2%)     max: 13.753 seconds
WinRAR - Result
min: 3632     avg: 3991     median: 3991 (41%)     max: 4350 KB/s
7-Zip 18.03 - 7z b 4
min: 11546     avg: 14749     median: 15022 (15%)     max: 17405 MIPS
7-Zip 18.03 - 7z b 4 -mmt1
min: 3653     avg: 3757     median: 3725.5 (25%)     max: 3925 MIPS
X264 HD Benchmark 4.0 - Pass 2
min: 29.5     avg: 32.8     median: 32 (19%)     max: 37.7 fps
X264 HD Benchmark 4.0 - Pass 1
min: 124.58     avg: 139     median: 137.5 (47%)     max: 157.6 fps
HWBOT x265 Benchmark v2.2 - 4k Preset
min: 3.02     avg: 4.1     median: 4.3 (15%)     max: 4.78 fps
01020Tooltip
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: 0.6     median: 0.7 (1%)     max: 0.714 GB/s
TrueCrypt - AES Mean 100MB
min: 2.9     avg: 3.5     median: 3.5 (0%)     max: 4 GB/s
Blender 2.79 - BMW27 CPU *
min: 812.5     avg: 980     median: 927.8 (7%)     max: 1209.2 Seconds
R Benchmark 2.5 - Overall mean *
min: 0.818     avg: 0.8     median: 0.8 (18%)     max: 0.836 sec
3DMark 06 - CPU - CPU Score
min: 4775     avg: 6370     median: 6348 (42%)     max: 7575 Points
Super Pi mod 1.5 XS 1M - 1M *
min: 10.9     avg: 11.7     median: 11.1 (2%)     max: 15.77 Seconds
Super Pi mod 1.5 XS 2M - 2M *
min: 24.9     avg: 26.3     median: 25.2 (1%)     max: 34.28 Seconds
Super Pi Mod 1.5 XS 32M - 32M *
min: 601     avg: 631     median: 613 (3%)     max: 782.59 Seconds
3DMark Vantage - P CPU no PhysX 1280x1024
min: 15198     avg: 20933     median: 21899 (31%)     max: 24736 Points
3DMark 11 - Performance Physics 1280x720
min: 3233     avg: 6318     median: 6272 (28%)     max: 8014 points
3DMark - Ice Storm Standard Physics 1280x720
min: 24077     avg: 44593     median: 45968.5 (30%)     max: 50962 Points
3DMark - Ice Storm Extreme Physics 1920x1080
min: 24155     avg: 44127     median: 45251 (54%)     max: 50910 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 34294     avg: 49460     median: 50444 (58%)     max: 52066 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 3002     avg: 5862     median: 5756.5 (15%)     max: 7695 Points
3DMark - Fire Strike Physics 1920x1080
min: 4495     avg: 8509     median: 8420 (26%)     max: 10727 Points
3DMark - Time Spy CPU 2560x1440
min: 1956     avg: 2709     median: 2663 (19%)     max: 3723 Points
Geekbench 3 - 32 Bit Multi-Core Score
min: 10893     avg: 12606     median: 12742 (23%)     max: 13553 Points
Geekbench 3 - 32 Bit Single-Core Score
min: 3148     avg: 3302     median: 3242 (67%)     max: 3503 Points