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Intel Core i7-8650U

Intel 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.

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 i7
CodenameKaby Lake Refresh
Series: Core i7 Kaby Lake Refresh
» Intel Core i7-8650U1900 - 4200 MHz4 / 88 MB
Intel Core i7-8550U (compare)1800 - 4000 MHz4 / 88 MB
Clock Rate1900 - 4200 MHz
Level 1 Cache256 KB
Level 2 Cache1 MB
Level 3 Cache8 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 - 1150 MHz)
64 Bit64 Bit support
Starting Price$409 U.S.
Announcement Date08/21/2017
Product Link (external)Intel Core i7 8650U

Benchmarks

Cinebench R15 - CPU Multi 64Bit
min: 447     avg: 598.7     median: 618.5 (20%)     max: 675 Points
Cinebench R15 - CPU Single 64Bit
min: 137     avg: 168.7     median: 169.5 (80%)     max: 178 Points
Cinebench R11.5 - CPU Multi 64Bit
min: 5.77     avg: 6.7     median: 7 (26%)     max: 7.24 Points
Cinebench R11.5 - CPU Single 64Bit
min: 1.7     avg: 1.9     median: 2 (82%)     max: 2.04 Points
Cinebench R10 - Rendering Single 32Bit
min: 5307     avg: 6336.8     median: 6629 (73%)     max: 6782 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 16227     avg: 18738     median: 18635 (37%)     max: 21455 Points
wPrime 2.0x - 1024m *
min: 268.279     avg: 301.9     median: 302.8 (4%)     max: 334.6 seconds
wPrime 2.0x - 32m *
min: 8.636     avg: 9.6     median: 9.9 (2%)     max: 10.277 seconds
WinRAR - Result
min: 4140     avg: 4423.3     median: 4319 (51%)     max: 4915 KB/s
X264 HD Benchmark 4.0 - Pass 2
min: 35     avg: 39.1     median: 39.8 (27%)     max: 41.98 fps
X264 HD Benchmark 4.0 - Pass 1
min: 149     avg: 165.4     median: 169.6 (63%)     max: 173.19 fps
TrueCrypt - Serpent Mean 100MB
min: 0.393     avg: 0.4     median: 0.4 (0%)     max: 0.444 GB/s
TrueCrypt - Twofish Mean 100MB
min: 0.662     avg: 0.7     median: 0.7 (25%)     max: 0.733 GB/s
TrueCrypt - AES Mean 100MB
min: 3.9     avg: 4.2     median: 4.3 (22%)     max: 4.4 GB/s
3DMark 06 - CPU
min: 6930     avg: 7272.8     median: 7111 (20%)     max: 7939 Points
Super Pi mod 1.5 XS 1M *
min: 8     avg: 8.5     median: 8.4 (2%)     max: 9 Seconds
Super Pi mod 1.5 XS 2M *
min: 19     avg: 19.5     median: 19.5 (1%)     max: 20.1 Seconds
Super Pi Mod 1.5 XS 32M *
min: 501     avg: 514     median: 506.5 (2%)     max: 542 Seconds
3DMark 11 - Performance Physics 1280x720
min: 5168     avg: 7237.3     median: 7024 (38%)     max: 8887 points
3DMark - Ice Storm Standard Physics 1280x720
min: 41248     avg: 42987.8     median: 41453 (27%)     max: 47797 Points
3DMark - Ice Storm Extreme Physics 1920x1080
min: 41011     avg: 43028.8     median: 41405.5 (54%)     max: 48293 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 44090     avg: 52920     median: 56455 (71%)     max: 58675 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 4442     avg: 6048.2     median: 6275 (16%)     max: 7416 Points
3DMark - Fire Strike Physics 1920x1080
min: 6823     avg: 9067.9     median: 9263 (34%)     max: 10541 Points
Mozilla Kraken 1.1 - Total Score *
min: 809     avg: 1149.9     median: 1082.6 (2%)     max: 1911.9 ms
Sunspider - 1.0 Total Score *
min: 63.8     avg: 70.1     median: 71 (2%)     max: 74.5 ms
Octane V2 - Total Score
min: 11491     avg: 31478.7     median: 33800.5 (70%)     max: 42822 Points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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