Intel Core 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.
Series Intel Core i7 Codename Kaby Lake-G Series: Core i7 Kaby Lake-G Clock Rate 3100 - 4100 MHz Level 1 Cache 256 KB Level 2 Cache 1 MB Level 3 Cache 8 MB Number of Cores / Threads 4 / 8 Power Consumption (TDP = Thermal Design Power) 65 Watt Manufacturing Technology 14 nm Socket BGA Features Dual-Channel DDR4-2400 Memory Controller, AVX, AVX2, Quick Sync, Virtualization, AES-NI GPU AMD Radeon RX Vega M GL / 870 (931 - 1011 MHz)64 Bit 64 Bit support Architecture x86 Announcement Date 01/07/2018
Benchmarks Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 404 avg: 414 median: 414 (46%) max: 424 Points
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Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 1845 avg: 1883 median: 1883 (5%) max: 1921 Points
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Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 733 avg: 763 median: 746 (5%) max: 810 Points
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0 40 80 120 160 200 240 280 320 360 400 440 480 520 560 600 640 680 720 760 Tooltip HP Spectre x360 15-ch000: Ø638 (593.04-732.6)
Dell XPS 15 9575 i7-8705G: Ø677 (641.53-746.06)
Acer ConceptD 5 CN515-51-73Z7: Ø767 (760-794)
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 165 avg: 171.7 median: 174 (52%) max: 176 Points
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Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 7.59 avg: 7.6 median: 7.6 (10%) max: 7.65 Points
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Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.89 avg: 1.9 median: 1.9 (48%) max: 1.97 Points
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Cinebench R10 - Cinebench R10 Rend. Single (32bit)
6436 points (39%)
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Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
23794 points (17%)
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wPrime 2.10 - wPrime 2.0 1024m *
197.6 s (2%)
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VIA C3-M C3-M-1200
wPrime 2.10 - wPrime 2.0 32m *
6.7 s (1%)
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4969 points (8%)
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X264 HD Benchmark 4.0 - x264 Pass 2
50.1 fps (17%)
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X264 HD Benchmark 4.0 - x264 Pass 1
181.2 fps (42%)
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TrueCrypt - TrueCrypt Serpent
0.4 GB/s (14%)
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TrueCrypt - TrueCrypt Twofish
0.8 GB/s (13%)
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TrueCrypt - TrueCrypt AES
4.6 GB/s (12%)
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Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
9.3 s (2%)
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VIA C3-M C3-M-1200
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
20.6 s (1%)
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Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
504 s (2%)
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VIA C3-M C3-M-1200
3DMark 11 - 3DM11 Performance Physics
min: 7804 avg: 8958 median: 9001 (24%) max: 9742 Points
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3DMark - 3DMark Ice Storm Physics
50292 Points (41%)
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3DMark - 3DMark Ice Storm Extreme Physics
49576 Points (40%)
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3DMark - 3DMark Ice Storm Unlimited Physics
min: 52646 avg: 53874 median: 53874 (45%) max: 55102 Points
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3DMark - 3DMark Cloud Gate Physics
min: 5191 avg: 6631 median: 6911 (17%) max: 7509 Points
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3DMark - 3DMark Fire Strike Standard Physics
min: 7038 avg: 9679 median: 10216 (18%) max: 11246 Points
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3DMark - 3DMark Time Spy CPU
min: 2844 avg: 3454 median: 3685 (16%) max: 3834 Points
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Geekbench 5.5 - Geekbench 5.1 - 5.4 64 Bit Single-Core
1059 points (45%)
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Geekbench 5.5 - Geekbench 5.1 - 5.4 64 Bit Multi-Core
4047 points (7%)
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Geekbench 5.0 - Geekbench 5.0 64 Bit Single-Core
1066 points (5%)
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Geekbench 5.0 - Geekbench 5.0 64 Bit Multi-Core
4029 points (13%)
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Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
5009 points (50%)
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Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
16066 points (18%)
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Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 1100 avg: 1121 median: 1123 (1%) max: 1140 ms
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Sunspider - Sunspider 1.0 Total Score *
82.9 ms (1%)
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Octane V2 - Octane V2 Total Score
min: 32176 avg: 32774 median: 32262 (29%) max: 33885 Points
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- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
v1.26
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Reviews for the Intel Core i7-8705G processor
Acer ConceptD 5 CN515-51 laptop review: Kaby Lake G lightweight struggles with cost cutting Acer leaves known paths with its ConceptD 5 CN515-51 to differentiate itself from the competition, with especially lightweight materials, Kaby Lake G with an in...
Intel Core i7-8705G | AMD Radeon RX Vega M GL / 870 | 15.60" | 1.5 kg
HP Spectre x360 15 (i7-8705G, Radeon RX Vega M GL) Convertible Review Awesome hardware, mixed performance. Kaby Lake-G has been impressive thus far, but its overall performance depends wholly on how OEMs implement the hardware. Th...
Intel Core i7-8705G | AMD Radeon RX Vega M GL / 870 | 15.60" | 2.1 kg
Dell XPS 15 9575 (i7-8705G, Vega M GL, 4K UHD) Convertible Review Higher price, same CPU performance. The Core i5 XPS 15 9575 impressed us in terms of raw performance and graphical prowess for such a thin convertible. The Core...
Intel Core i7-8705G | AMD Radeon RX Vega M GL / 870 | 15.60" | 2 kg
Acer ConceptD 5 CN515-51-73Z7 : AMD Radeon RX Vega M GL / 870, 15.60", 1.5 kg
External Review » Acer ConceptD 5 CN515-51-73Z7
Acer Aspire 7 A715-73G-779W : AMD Radeon RX Vega M GL / 870, 15.60", 1.5 kg
External Review » Acer Aspire 7 A715-73G-779W
Acer ConceptD 5 : AMD Radeon RX Vega M GL / 870, 15.60", 1.5 kg
External Review » Acer ConceptD 5
HP Spectre x360 15-ch006nf : AMD Radeon RX Vega M GL / 870, 15.60", 2.1 kg
External Review » HP Spectre x360 15-ch006nf
HP Spectre x360 15-CH004no : AMD Radeon RX Vega M GL / 870, 15.60", 2.2 kg
External Review » HP Spectre x360 15-CH004no
Dell XPS 15 9575 i7-8705G : AMD Radeon RX Vega M GL / 870, 15.60", 2 kg
External Review » Dell XPS 15 9575 i7-8705G
HP Spectre x360 15-ch025nd : AMD Radeon RX Vega M GL / 870, 15.60", 2.1 kg
External Review » HP Spectre x360 15-ch025nd
Dell XPS 15 9575, i7-8705G : AMD Radeon RX Vega M GL / 870, 15.60", 2 kg
External Review » Dell XPS 15 9575, i7-8705G
HP Spectre x360 15-ch004ng : AMD Radeon RX Vega M GL / 870, 15.60", 2.1 kg
External Review » HP Spectre x360 15-ch004ng
Acer ConceptD 5 CN515-51-73Z7 : AMD Radeon RX Vega M GL / 870, 15.60", 1.5 kg
» The Acer ConceptD 5 CN515-51 misses a clear target market thanks to cost-cutting
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Klaus Hinum, 2018-01-18 (Update: 2018-01-18)