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Intel Core i7-8550U

Intel i5-8550U

The Intel Core i7-8550U 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 predecessors Core i7-7500U and i5-7260U, respectively, which were still dual-cores, the i7-8550U is equipped with four cores but at a lower base frequency of 1.8 GHz. The Turbo Boost is not specified yet, but should be at least 3.7 - 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

The performance of the i7-8550U depends on the cooling solution of the laptop and the defined TDP limits for short and long term performance. This leads to big differences in our benchmark scores ranging from the 15 Watt reference by Intel up to the 23% higher score of the Inspiron 17-7773 in the Cinebench R15 Multi benchmark. Especially when taxing the CPU for longer periods, these differences can be even higher.

In our usual benchmarks, the average i7-8550U is as fast as the 35 Watt rated Core i5-7440HQ. For single thread performance, the high Turbo Boost frequency helps achieving one of the highest scores for mobile CPUs.

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 compare1.9 - 4.2 GHz4 / 88 MB
» Intel Core i7-8550U1.8 - 4 GHz4 / 88 MB
Intel Core i5-8350U compare1.7 - 3.6 GHz4 / 86 MB
Intel Core i5-8250U compare1.6 - 3.4 GHz4 / 86 MB
Intel Core i3-8130U compare2.2 - 3.4 GHz2 / 44 MB
Intel Pentium Gold 4417U compare2.3 GHz2 / 42 MB
Clock Rate1800 - 4000 MHz
Level 1 Cache256 KB
Level 2 Cache1 MB
Level 3 Cache8 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 - 1150 MHz)
64 Bit64 Bit support
Architecturex86
Starting Price$409 U.S.
Announcement Date08/21/2017

Benchmarks

Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 301     avg: 578     median: 553.5 (12%)     max: 761 Points
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Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 108     avg: 160     median: 163.5 (60%)     max: 172 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 4.38     avg: 6.3     median: 6.1 (12%)     max: 8.56 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.43     avg: 1.8     median: 1.9 (60%)     max: 1.95 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 4202     avg: 6333     median: 6423 (57%)     max: 8211 points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 11694     avg: 17867     median: 17321.5 (29%)     max: 24180 points
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 12279     avg: 23153     median: 22717 (22%)     max: 31667 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 6737     avg: 8065     median: 8370.5 (63%)     max: 8436 Points
wPrime 2.10 - wPrime 2.0 1024m *
min: 257.514     avg: 352     median: 366.7 (4%)     max: 435 s
wPrime 2.10 - wPrime 2.0 32m *
min: 7.047     avg: 9.8     median: 9.9 (2%)     max: 12.7 s
wPrime 1.55 - wPrime 1.55 1024m *
847 s (3%)
X264 HD Benchmark 4.0 - x264 Pass 2
min: 32     avg: 35.3     median: 33.1 (15%)     max: 41 fps
X264 HD Benchmark 4.0 - x264 Pass 1
min: 143.6     avg: 154     median: 147.9 (44%)     max: 178 fps
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 3.88     avg: 4.2     median: 4.2 (13%)     max: 4.43 fps
010Tooltip
Blender 2.79 - Blender 2.79 BMW27 CPU *
min: 841.1     avg: 889     median: 888.9 (6%)     max: 936.7 Seconds
3DMark 06 - CPU - 3DMark 06 - CPU
min: 4534     avg: 5951     median: 5845 (32%)     max: 7795 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 9     avg: 10.5     median: 9.3 (2%)     max: 17.455 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 20     avg: 23     median: 21.2 (1%)     max: 32.72 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 509.5     avg: 575     median: 536 (2%)     max: 740.35 s
3DMark 11 - 3DM11 Performance Physics
min: 3961     avg: 6671     median: 6663 (28%)     max: 9527 Points
3DMark - 3DMark Ice Storm Physics
min: 16314     avg: 42803     median: 44682 (29%)     max: 55226 Points
3DMark - 3DMark Ice Storm Extreme Physics
min: 16312     avg: 37536     median: 36876 (39%)     max: 51937 Points
3DMark - 3DMark Ice Storm Unlimited Physics
min: 27917     avg: 50269     median: 52842 (55%)     max: 58213 Points
3DMark - 3DMark Cloud Gate Physics
min: 3437     avg: 5736     median: 5675 (14%)     max: 7725 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 3961     avg: 8258     median: 8409 (21%)     max: 11110 Points
3DMark - 3DMark Time Spy CPU
min: 2500     avg: 2935     median: 2893.5 (20%)     max: 3865 Points
Geekbench 3 - Geekbench 3 32 Bit Multi-Core
min: 8918     avg: 12315     median: 12327.5 (22%)     max: 14144 points
Geekbench 3 - Geekbench 3 32 Bit Single-Core
min: 2471     avg: 3671     median: 3770 (77%)     max: 4020 points
Geekbench 4.0 - Geekbench 4.0 64 Bit Single-Core
min: 4439     avg: 4686     median: 4699 (73%)     max: 4858 points
Geekbench 4.0 - Geekbench 4.0 64 Bit Multi-Core
min: 10747     avg: 13316     median: 13251 (32%)     max: 15294 points
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
min: 4555     avg: 4858     median: 4900 (67%)     max: 4997 points