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Intel Core i5-8250U

Intel 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 Core i5
CodenameKaby Lake Refresh
Series: Core i5 Kaby Lake Refresh
Intel Core i5-8350U (compare)1700 - 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: 506     avg: 586.4     median: 564.5 (26%)     max: 730 Points
Cinebench R15 - CPU Single 64Bit
min: 81     avg: 142.1     median: 144 (70%)     max: 147 Points
Cinebench R11.5 - CPU Multi 64Bit
min: 4.86     avg: 6.3     median: 6 (25%)     max: 7.76 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1.57     avg: 1.6     median: 1.6 (70%)     max: 1.79 Points
Cinebench R10 - Rendering Single 32Bit
min: 5420     avg: 5670.4     median: 5535 (66%)     max: 8356 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 14148     avg: 18498.1     median: 18070 (36%)     max: 22097 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 20922     avg: 24957.4     median: 24798 (43%)     max: 28932 Points
Cinebench R10 - Rendering Single CPUs 64Bit
min: 7049     avg: 7275.9     median: 7190.5 (79%)     max: 8153 Points
wPrime 2.0x - 1024m *
min: 243.336     avg: 310.7     median: 318.6 (4%)     max: 402.09 seconds
wPrime 2.0x - 32m *
min: 7.394     avg: 9.1     median: 8.2 (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: 33.1     median: 32 (26%)     max: 37.7 fps
X264 HD Benchmark 4.0 - Pass 1
min: 136.7     avg: 144.2     median: 138.3 (59%)     max: 157.6 fps
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 (0%)     max: 0.714 GB/s
TrueCrypt - AES Mean 100MB
min: 2.9     avg: 3.5     median: 3.5 (18%)     max: 4 GB/s
3DMark 06 - CPU
min: 4775     avg: 6336.4     median: 6125 (48%)     max: 7575 Points
Super Pi mod 1.5 XS 1M *
min: 10.9     avg: 11.9     median: 11.1 (2%)     max: 15.77 Seconds
Super Pi mod 1.5 XS 2M *
min: 24.9     avg: 26.5     median: 25.2 (1%)     max: 34.28 Seconds
Super Pi Mod 1.5 XS 32M *
min: 601     avg: 634.8     median: 616.2 (3%)     max: 782.59 Seconds
3DMark Vantage - P CPU no PhysX 1280x1024
min: 15198     avg: 20668     median: 22070 (37%)     max: 24736 Points
3DMark 11 - Performance Physics 1280x720
min: 4801     avg: 6442.8     median: 6396.5 (36%)     max: 8014 points
3DMark - Ice Storm Standard Physics 1280x720
min: 24077     avg: 44780     median: 46370 (30%)     max: 50962 Points
3DMark - Ice Storm Extreme Physics 1920x1080
min: 24155     avg: 44793.6     median: 46076 (60%)     max: 50910 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 34294     avg: 49482.3     median: 50640 (64%)     max: 52050 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 3113     avg: 5940.3     median: 5904 (15%)     max: 7695 Points
3DMark - Fire Strike Physics 1920x1080
min: 4495     avg: 8565.8     median: 8515 (33%)     max: 10727 Points
Geekbench 3 - 32 Bit Multi-Core Score
min: 11489     avg: 12758.6     median: 12854 (41%)     max: 13553 Points
Geekbench 3 - 32 Bit Single-Core Score
min: 3180     avg: 3303.2     median: 3196 (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: 25592.9     median: 21905 (10%)     max: 47987 Points
Geekbench 4.0 - 64 Bit Multi-Core Score
min: 11026     avg: 12262.9     median: 12150.5 (44%)     max: 13486 Points
Geekbench 4.0 - 64 Bit Single-Core Score
min: 3958     avg: 4077.8     median: 4019.5 (70%)     max: 4232 Points