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Intel Core i7-8705G

Intel i7-8705G

The Intel Core i7-8705G is a fast quad-core processor for notebooks based on the Kaby Lake architecture and was announced in January 2018. similar to the Core i7-7920HQ it integrates four processor cores clocked at 3.1 - 4.1 GHz. As a speciality the package also contains a Vega based graphics card from AMD (rumors speak of 20 CUs = 1,280 shaders at 1011 MHz) and 4 GB HBM2 graphics memory. The CPU is still produced in 14nm as the i7-7920HQ. Similar to the Core i7-8706G, but without vPro support. Compared to the high-end Kaby Lake-G models, the i7-8705G only features 20 instead of 24 CUs for the Vega GPU and a lower TDP of 65 versus 100 Watt.

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

Compared to the i7-7920HQ, the i7-8705G should be slightly faster due to the HBM2 memory and the 65 Watt TDP. The performance is therefore sufficient even for very demanding tasks and on par with powerful desktop quad-core processors.

Graphics

In addition to the Intel HD Graphics 630 in the CPU die, the Core i7-8809G also offers an AMD Radeon RX Vega M GL graphics card with 20 CUs and therefore double the amount of the current mobile Ryzen APUs (e.g. Ryzen 7 2700 with 10 CUs) but 4 less than the Vega M GH of the high end models.

Contrary to Skylake, Kaby Lake now supports hardware decoding for H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The 8809G should also support HDCP 2.2, but for HDMI 2.0, it most likely needs a converter from DisplayPort.

Power Consumption

The CPU chip is manufactured in an improved 14nm process with FinFET transistors. It is rated at a TDP of around 65 Watt and therefore is only suited for laptops with good cooling solutions. Compared to laptops with Core i7-H quad cores and dedicated graphics cards, the i7-8705G based models can be built with smaller chassis.

SeriesIntel Core i7
CodenameKaby Lake-G
Series: Core i7 Kaby Lake-G
Intel Core i7-8809G compare3.1 - 4.2 GHz4 / 88 MB
Intel Core i7-8709G compare3.1 - 4.1 GHz4 / 88 MB
Intel Core i7-8706G compare3.1 - 4.1 GHz4 / 88 MB
» Intel Core i7-8705G3.1 - 4.1 GHz4 / 88 MB
Clock Rate3100 - 4100 MHz
Level 1 Cache256 KB
Level 2 Cache1 MB
Level 3 Cache8 MB
Number of Cores / Threads4 / 8
Power Consumption (TDP = Thermal Design Power)65 Watt
Manufacturing Technology14 nm
SocketBGA
FeaturesDual-Channel DDR4-2400 Memory Controller, AVX, AVX2, Quick Sync, Virtualization, AES-NI
GPUAMD Radeon RX Vega M GL / 870 (931 - 1011 MHz)
64 Bit64 Bit support
Architecturex86
Announcement Date01/07/2018

Benchmarks

Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 733     avg: 763     median: 746 (17%)     max: 810 Points
04080120160200240280320360400440480520560600640680720760732.6702.59696.42690.19690.26685.12672.55657.97643.07616.53607.94593.04614.49631.72649.3661.8646.84627.18609.37604.14624.89644.13647.33640.09622.6605.12615.77640.55649.53632.08613.8618.3637.7629.72620.04616.06637.35645.53629.87608.85603.59625.97644.96654.57637.83622.52602.77611.65631.41647.56746.06668.86655.83665.1641.53667.65677.9672.9673.97676.65679.15680.79680.24677.9680.6682.23681.33681.51680.06680.6680.96679.15679.69675.74680.78679.15677.37679.34672.2678.97679.34666.94679.15666.94651.67675.56672.55673.25675.93675.76679.53677.54680.77679.88677.19678.07682.78684.05682.23683.5789794787782778771774773770766772766766767763766769769767766766766766768762766764761763766768762765762762761764760762763765762763760764760764765761766Tooltip
3DMark 11 - 3DM11 Performance Physics
min: 7804     avg: 8958     median: 9001 (33%)     max: 9742 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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Reviews for the Intel Core i7 i7-8705G processor

Acer Aspire 7 A715-73G-779W (AMD Vega M GL / 870, 15.60")
» Acer Aspire 7 A715-73G-779W - External Review

Acer ConceptD 5 (AMD Vega M GL / 870, 15.60")
» Acer ConceptD 5 - External Review

Acer ConceptD 5 CN515-51-73Z7 (AMD Vega M GL / 870, 15.60")
» Acer ConceptD 5 CN515-51 laptop review: Kaby Lake G lightweight struggles with cost cutting - Review
» Acer ConceptD 5 CN515-51-73Z7 - External Review
» The Acer ConceptD 5 CN515-51 misses a clear target market thanks to cost-cutting -

Dell XPS 15 9575 i7-8705G (AMD Vega M GL / 870, 15.60")
» Dell XPS 15 9575 (i7-8705G, Vega M GL, 4K UHD) Convertible Review - Review
» Dell XPS 15 9575 i7-8705G - External Review

Dell XPS 15 9575, i7-8705G (AMD Vega M GL / 870, 15.60")
» Dell XPS 15 9575, i7-8705G - External Review

HP Spectre x360 15-ch000 (AMD Vega M GL / 870, 15.60")
» HP Spectre x360 15 (i7-8705G, Radeon RX Vega M GL) Convertible Review - Review

HP Spectre x360 15-ch004ng (AMD Vega M GL / 870, 15.60")
» HP Spectre x360 15-ch004ng - External Review

HP Spectre x360 15-CH004no (AMD Vega M GL / 870, 15.60")
» HP Spectre x360 15-CH004no - External Review

HP Spectre x360 15-ch006nf (AMD Vega M GL / 870, 15.60")
» HP Spectre x360 15-ch006nf - External Review

HP Spectre x360 15-ch025nd (AMD Vega M GL / 870, 15.60")
» HP Spectre x360 15-ch025nd - External Review

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» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Core i7

» Intel Core i7-8809G
   4x 3.1 GHz - 4.2 GHz
» Intel Core i7-8709G
   4x 3.1 GHz - 4.1 GHz
» Intel Core i7-8706G
   4x 3.1 GHz - 4.1 GHz
» Intel Core i7-8705G
   4x 3.1 GHz - 4.1 GHz
» Intel Core i7-4940MX
   4x 3.1 GHz - 4 GHz
» Intel Core i7-6920HQ
   4x 2.9 GHz - 3.8 GHz
» Intel Core i7-5950HQ
   4x 2.9 GHz - 3.8 GHz
» Intel Core i7-4930MX
   4x 3 GHz - 3.9 GHz
» Intel Core i7-6970HQ
   4x 2.8 GHz - 3.7 GHz
» Intel Core i7-6870HQ
   4x 2.7 GHz - 3.6 GHz
» Intel Core i7-4980HQ
   4x 2.8 GHz - 4 GHz
» Intel Core i7-4910MQ
   4x 2.9 GHz - 3.9 GHz
» Intel Core i7-5850HQ
   4x 2.7 GHz - 3.6 GHz
» Intel Core i7-3940XM
   4x 3 GHz - 3.9 GHz
» Intel Core i7-5700HQ
   4x 2.7 GHz - 3.5 GHz
» Intel Core i7-5750HQ
   4x 2.5 GHz - 3.4 GHz
» Intel Core i7-6820HK
   4x 2.7 GHz - 3.6 GHz
» Intel Core i7-6820HQ
   4x 2.7 GHz - 3.6 GHz
» Intel Core i7-6770HQ
   4x 2.6 GHz - 3.5 GHz
» Intel Core i7-4900MQ
   4x 2.8 GHz - 3.8 GHz
» Intel Core i7-4960HQ
   4x 2.6 GHz - 3.8 GHz
» Intel Core i7-6700HQ
   4x 2.6 GHz - 3.5 GHz
» Intel Core i7-4810MQ
   4x 2.8 GHz - 3.8 GHz
» Intel Core i7-4870HQ
   4x 2.5 GHz - 3.7 GHz
» Intel Core i7-8665U
   4x 1.9 GHz - 4.8 GHz
» Intel Core i7-3920XM
   4x 2.9 GHz - 3.8 GHz
» Intel Core i7-4800MQ
   4x 2.7 GHz - 3.7 GHz
» Intel Core i7-4950HQ
   4x 2.4 GHz - 3.6 GHz
» Intel Core i7-4860HQ
   4x 2.4 GHz - 3.6 GHz
» Intel Core i7-4720HQ
   4x 2.6 GHz - 3.6 GHz
» Intel Core i7-3840QM
   4x 2.8 GHz - 3.8 GHz
» Intel Core i7-4850HQ
   4x 2.3 GHz - 3.5 GHz
» Intel Core i7-4710HQ
   4x 2.5 GHz - 3.5 GHz
» Intel Core i7-4710MQ
   4x 2.5 GHz - 3.5 GHz
» Intel Core i7-8565U
   4x 1.8 GHz - 4.6 GHz
» Intel Core i7-4770HQ
   4x 2.2 GHz - 3.4 GHz
» Intel Core i7-3820QM
   4x 2.7 GHz - 3.7 GHz
» Intel Core i7-3740QM
   4x 2.7 GHz - 3.7 GHz
» Intel Core i7-3720QM
   4x 2.6 GHz - 3.6 GHz
» Intel Core i7-4700HQ
   4x 2.4 GHz - 3.4 GHz
» Intel Core i7-4700MQ
   4x 2.4 GHz - 3.4 GHz
» Intel Core i7-4760HQ
   4x 2.1 GHz - 3.3 GHz
» Intel Core i7-4722HQ
   4x 2.4 GHz - 3.4 GHz
» Intel Core i7-2960XM
   4x 2.7 GHz - 3.7 GHz
» Intel Core i7-4712HQ
   4x 2.3 GHz - 3.3 GHz
» Intel Core i7-4712MQ
   4x 2.3 GHz - 3.3 GHz
» Intel Core i7-4750HQ
   4x 2 GHz - 3.2 GHz
» Intel Core i7-3635QM
   4x 2.4 GHz - 3.4 GHz
» Intel Core i7-3630QM
   4x 2.4 GHz - 3.4 GHz
» Intel Core i7-4702HQ
   4x 2.2 GHz - 3.2 GHz
» Intel Core i7-4702MQ
   4x 2.2 GHz - 3.2 GHz
» Intel Core i7-2860QM
   4x 2.5 GHz - 3.6 GHz
» Intel Core i7-2920XM
   4x 2.5 GHz - 3.5 GHz
» Intel Core i7-3615QM
   4x 2.3 GHz - 3.3 GHz
» Intel Core i7-3610QM
   4x 2.3 GHz - 3.3 GHz
» Intel Core i7-3632QM
   4x 2.2 GHz - 3.2 GHz
» Intel Core i7-2760QM
   4x 2.4 GHz - 3.5 GHz
» Intel Core i7-2820QM
   4x 2.3 GHz - 3.4 GHz
» Intel Core i7-3612QM
   4x 2.1 GHz - 3.1 GHz
» Intel Core i7-2720QM
   4x 2.2 GHz - 3.3 GHz
» Intel Core i7-2675QM
   4x 2.2 GHz - 3.1 GHz
» Intel Core i7-2670QM
   4x 2.2 GHz - 3.1 GHz
» Intel Core i7-6567U
   2x 3.3 GHz - 3.6 GHz