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Intel Core i3-8109U

The Intel Core i3-8109U is a dual-core SoC for notebooks based on the Coffee Lake architecture and was announced in April 2018. Compared to its predecessor Core i3-7167U, the CPU now supports Turbo boost with up to 3.6 GHz. Thanks to Hyperthreading the CPU can execute up to 4 threads simultaneously. It is also equipped with an Intel Iris Plus Graphics 655 GPU with 128 MB eDRAM (but with 300 - 1050 MHz it is the slowest Iris Plus), a dual-channel memory controller (DDR4) as well as VP9 and H.265 video decoding as well as encoding. The chip is still manufactured in a 14nm++ process (3rd generation) with FinFET transistors.

Architecture

Intel basically uses the same micro architecture compared to Kaby Lake, 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

Thanks to the Turbo Boost, the processor performance should be a bit above the old Core i7-7500U (max. 3.5 GHz, 15 Watt). Therefore the Core i3-8109U should be fine for most applications. Some games however already need four real cores for optimal performance (paired with a dedicated GPU e.g.).

Graphics

The integrated Intel Iris Plus 655 Graphics is the GT3e model of the Kaby Lake GPU (Intel Gen. 9.5). It has 48 Execution Units running at 300-1050 MHz  and the performance is comparable to a GeForce 930M or 940MX thanks to fast eDRAM cache. However, there aren't any significant improvements compared to the old Iris Plus 650, so modern games can often not be played smoothly or only at the lowest or medium settings, respectively.

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 (14nm++, 3rd generation of 14nm) with FinFET transistors, which improves the efficiency even further. Intel specifies the TDP with 28 Watts, which can be reduced to 23 Watts (cTDP Down) depending on the usage scenario. The TDP is pretty high compared to the common 15-Watt TDP for quad-core processors, but allows a better utilization of CPU and GPU Turbo.

SeriesIntel Coffee Lake
CodenameCoffee Lake-U
Series: Coffee Lake Coffee Lake-U
Intel Core i7-8559U compare2700 - 4500 MHz4 / 88 MB
Intel Core i7-8557U compare1700 - 4500 MHz4 / 88 MB
Intel Core i5-8269U compare2600 - 4200 MHz4 / 86 MB
Intel Core i5-8279U compare2400 - 4100 MHz4 / 86 MB
Intel Core i5-8259U compare2300 - 3800 MHz4 / 86 MB
Intel Core i5-8257U compare1400 - 3900 MHz4 / 86 MB
» Intel Core i3-8109U3000 - 3600 MHz2 / 44 MB
Clock Rate3000 - 3600 MHz
Level 1 Cache128 KB
Level 2 Cache512 KB
Level 3 Cache4 MB
Number of Cores / Threads2 / 4
Power Consumption (TDP = Thermal Design Power)28 Watt
Manufacturing Technology14 nm
Max. Temperature100 °C
SocketFCBGA1528
FeaturesDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, Intel SSE4.1, Intel SSE 4.2
GPUIntel Iris Plus Graphics 655 (300 - 1050 MHz)
64 Bit64 Bit support
Announcement Date04/03/2018
Product Link (external)Intel Coffee Lake i3-8109U

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* Smaller numbers mean a higher performance

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Other CPUs of the series Intel Coffee Lake

» Intel Coffee Lake i9-9900KS
   4 GHz / 2 MB L2 + 16 MB L3
» Intel Coffee Lake i9-9900K
   3.6 GHz / 2 MB L2 + 16 MB L3
» Intel Coffee Lake i9-9980HK
   2.4 GHz / 2 MB L2 + 16 MB L3
» Intel Coffee Lake i7-9700K
   3.6 GHz / 2 MB L2 + 12 MB L3
» Intel Coffee Lake i9-9880H
   2.3 GHz / 2 MB L2 + 16 MB L3
» Intel Coffee Lake i7-8086K
   3.7 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i7-8700K
   3.7 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i7-9700
   3 GHz / 2 MB L2 + 12 MB L3
» Intel Coffee Lake i9-8950HK
   2.9 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake E-2186M
   2.9 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake E-2276M
   2.8 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake E-2176G
   3.7 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i7-8700
   3.2 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i5-9600K
   3.7 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i9-9900T
   2.1 GHz / 2 MB L2 + 16 MB L3
» Intel Coffee Lake i7-9850H
   2.6 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i7-9750H
   2.6 GHz + 12 MB L3
» Intel Coffee Lake E-2176M
   2.7 GHz / 1.5 MB L2 + 12 MB L3
» Intel Coffee Lake i7-8850H
   2.6 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i5-8600K
   3.6 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i5-8500
   3 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i7-8750H
   2.2 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i5-8400
   2.8 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i5-8500T
   2.1 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i5-9400H
   2.5 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-9300HF
   2.4 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-9300H
   2.4 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-8400H
   2.5 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i7-8559U
   2.7 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-8300H
   2.3 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-9400F
   2.9 GHz / 1.5 MB L2 + 9 MB L3
» Intel Coffee Lake i3-9100F
   3.6 GHz / 1 MB L2 + 6 MB L3
» Intel Coffee Lake i7-8557U
   1.7 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i5-8269U
   2.6 GHz / 1 MB L2 + 6 MB L3
» Intel Coffee Lake i5-8279U
   2.4 GHz / 1 MB L2 + 6 MB L3
» Intel Coffee Lake i5-8259U
   2.3 GHz / 1 MB L2 + 6 MB L3
» Intel Coffee Lake i5-8257U
   1.4 GHz / 1 MB L2 + 6 MB L3
» Intel Coffee Lake i3-8100H
   3 GHz / 1 MB L2 + 8 MB L3
» Intel Coffee Lake i3-8109U
   3 GHz / 0.5 MB L2 + 4 MB L3

Surrounding CPUs

- Intel Comet Lake i7-10510Y
   1.2 GHz / 0.5 MB
- Intel Core i7 2620M
   2.7 GHz / 0.5 MB + 4 MB
- Intel Core i7 4600U
   2.1 GHz / 0.5 MB + 4 MB
- Intel Core i7 4650U
   1.7 GHz / 0.5 MB + 4 MB
- Intel Kaby Lake i3-7167U
   2.8 GHz / 0.5 MB + 3 MB
» Intel Coffee Lake i3-8109U
   3 GHz / 0.5 MB L2 + 4 MB L3
+ Intel Core i5 6198DU
   2.3 GHz / 512 KB + 3072 KB
+ Intel Core i5 6200U
   2.3 GHz / 512 KB + 3072 KB
+ Intel Comet Lake i5-10310Y
   1.1 GHz / 512 KB + 6144 KB
+ Intel Comet Lake i5-10210Y
   1 GHz / 512 KB + 6144 KB
+ Intel Kaby Lake i3-7130U
   2.7 GHz / 512 KB + 3072 KB
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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Notebook Processors > Intel Core i3-8109U SoC (Coffee Lake 28W)
Klaus Hinum (Update: 2018-08-13)