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Intel Core i7-8550U vs Intel Core i7-8650U

Intel Core i7-8550U

► remove from comparison 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.

Intel Core i7-8650U

► remove from comparison Intel i7-8650U

The Intel Core i7-8650U 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 i7-7600U, which were still dual-cores, the i7-8650U is equipped with four cores but at a lower base frequency of 1.9 GHz. The Turbo Boost can go up to 4,2 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 behaviour 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. The performance however is highly depending on the TDP settings and cooling solution of the laptop. Especially, longer loads will show varying results in different laptops.

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.

ModelIntel Core i7-8550UIntel Core i7-8650U
SeriesIntel Kaby Lake RefreshIntel Kaby Lake Refresh
CodenameKaby Lake RefreshKaby Lake Refresh
Series: Kaby Lake Refresh Kaby Lake Refresh
Intel Core i7-8650U1.9 - 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
» Intel Core i7-8650U1.9 - 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
Clock1800 - 4000 MHz1900 - 4200 MHz
L1 Cache256 KB256 KB
L2 Cache1 MB1 MB
L3 Cache8 MB8 MB
Cores / Threads4 / 84 / 8
TDP15 Watt15 Watt
Technology14 nm14 nm
SocketBGA1356BGA1356
FeaturesDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NIDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI
iGPUIntel UHD Graphics 620 (300 - 1150 MHz)Intel UHD Graphics 620 (300 - 1150 MHz)
Architecturex86x86
$409 U.S.$409 U.S.
Announced
ManufacturerIntel Kaby Lake Refresh i7-8650U

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - i5-8550U
35.2 pt (41%)
Cinebench R23 - Cinebench R23 Multi Core
2914 Points (5%)
Cinebench R23 - Cinebench R23 Single Core
1021 Points (51%)
Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 383     avg: 388.5     median: 388.5 (50%)     max: 394 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 1118     avg: 1128     median: 1128 (5%)     max: 1138 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 301     avg: 576     median: 553 (6%)     max: 761 Points
04080120160200240280320360400440480520560600640680720760Tooltip
min: 451     avg: 589     median: 605 (6%)     max: 675 Points
03570105140175210245280315350385420455490525560595630665Tooltip
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 108     avg: 159.5     median: 163 (56%)     max: 172 Points
min: 128     avg: 165     median: 169 (58%)     max: 178 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 4.38     avg: 6.3     median: 6.1 (11%)     max: 8.56 Points
min: 5.04     avg: 6.4     median: 6.8 (13%)     max: 7.24 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.43     avg: 1.8     median: 1.9 (54%)     max: 1.95 Points
min: 1.67     avg: 1.9     median: 1.9 (55%)     max: 2.04 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 4202     avg: 6333     median: 6423 (57%)     max: 8211 Points
min: 5307     avg: 6337     median: 6629 (59%)     max: 6782 Points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 11694     avg: 17867     median: 17321.5 (24%)     max: 24180 Points
min: 16227     avg: 18738     median: 18635 (25%)     max: 21455 Points
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 12279     avg: 23153     median: 22717 (20%)     max: 31667 Points
21677 Points (19%)
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 6737     avg: 8065     median: 8370.5 (51%)     max: 8436 Points
6864 Points (42%)
wPrime 2.10 - wPrime 2.0 1024m *
min: 257.5     avg: 352     median: 366.7 (4%)     max: 435 s
min: 268.3     avg: 301.9     median: 302.8 (4%)     max: 334.6 s
wPrime 2.10 - wPrime 2.0 32m *
min: 7.047     avg: 9.8     median: 9.9 (2%)     max: 12.7 s
min: 8.636     avg: 9.6     median: 9.9 (2%)     max: 10.28 s
wPrime 1.55 - wPrime 1.55 1024m *
847 s (3%)
413.8 s (2%)
wPrime 1.55 - wPrime 1.55 32m *
26.3 s (14%)
10.3 s (5%)
WinRAR - WinRAR 4.0
min: 3847     avg: 4487     median: 4374 (25%)     max: 5287 Points
min: 4140     avg: 4423     median: 4319 (25%)     max: 4915 Points
7-Zip 18.03 - 7-Zip 18.03 Multli Thread 4 runs
15613 MIPS (11%)
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
4337 MIPS (62%)
X264 HD Benchmark 4.0 - x264 Pass 2
min: 32     avg: 35.3     median: 33.1 (15%)     max: 41 fps
min: 35     avg: 39.1     median: 39.8 (18%)     max: 41.98 fps
X264 HD Benchmark 4.0 - x264 Pass 1
min: 143.6     avg: 153.9     median: 147.9 (40%)     max: 178 fps
min: 149     avg: 165.4     median: 169.6 (46%)     max: 173.2 fps
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 3.77     avg: 4     median: 3.9 (8%)     max: 4.43 fps
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TrueCrypt - TrueCrypt Serpent
min: 0.357     avg: 0.4     median: 0.4 (15%)     max: 0.469 GB/s
min: 0.393     avg: 0.4     median: 0.4 (15%)     max: 0.444 GB/s
TrueCrypt - TrueCrypt Twofish
min: 0.583     avg: 0.7     median: 0.7 (15%)     max: 0.793 GB/s
min: 0.662     avg: 0.7     median: 0.7 (15%)     max: 0.733 GB/s
TrueCrypt - TrueCrypt AES
min: 3.3     avg: 4.2     median: 4.3 (16%)     max: 4.6 GB/s
min: 3.9     avg: 4.2     median: 4.3 (16%)     max: 4.4 GB/s
Blender - Blender 2.79 BMW27 CPU *
min: 841     avg: 897     median: 913 (6%)     max: 937 Seconds
R Benchmark 2.5 - R Benchmark 2.5 *
0.7 sec (15%)
3DMark 06 - CPU - 3DMark 06 - CPU
min: 4534     avg: 5951     median: 5845 (12%)     max: 7795 Points
min: 4487     avg: 6716     median: 6936 (15%)     max: 7939 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: 17.45 s
min: 8     avg: 8.6     median: 8.8 (2%)     max: 9 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
min: 19     avg: 19.7     median: 20 (1%)     max: 20.1 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 510     avg: 575     median: 536 (2%)     max: 740 s
min: 501     avg: 513     median: 508 (2%)     max: 542 s
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
21623 Points (22%)
19125 Points (20%)
3DMark 11 - 3DM11 Performance Physics
min: 3961     avg: 6653     median: 6649 (23%)     max: 9527 Points
min: 5168     avg: 7106     median: 6863 (24%)     max: 8887 Points
3DMark - 3DMark Ice Storm Physics
min: 16314     avg: 42803     median: 44682 (29%)     max: 55226 Points
min: 39040     avg: 42198     median: 41275 (27%)     max: 47797 Points
3DMark - 3DMark Ice Storm Extreme Physics
min: 16312     avg: 37536     median: 36876 (31%)     max: 51937 Points
min: 41011     avg: 43029     median: 41405.5 (34%)     max: 48293 Points
3DMark - 3DMark Ice Storm Unlimited Physics
min: 27917     avg: 50269     median: 52842 (45%)     max: 58213 Points
min: 44090     avg: 52920     median: 56455 (48%)     max: 58675 Points
3DMark - 3DMark Cloud Gate Physics
min: 3437     avg: 5739     median: 5695 (14%)     max: 7725 Points
min: 4442     avg: 5935     median: 6089 (15%)     max: 7416 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 3961     avg: 8228     median: 8306 (20%)     max: 11110 Points