Notebookcheck Logo

Intel Core i7-8559U vs Intel Core i5-8259U

Intel Core i7-8559U

► remove from comparison

The Intel Core i7-8559U is a quad-core SoC for notebooks based on the Coffee Lake architecture and was announced in April 2018. Compared to its predecessor Core i7-7567U, the CPU is now a quad-core with Hyperthreading support for the execution of up to 8 threads simultaneously. The base frequency is 2.7 GHz, but the Turbo goes all the way up to 4.5 GHz. It is also equipped with an Intel Iris Plus Graphics 655 GPU with 128 MB eDRAM, 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 with FinFET transistors.

Compared to faster Core i5 models with eDRAM and 28 Watts, the i5-8559U features 8 MB smart cache and the fastest clock of the Iris Plus GPU.

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

Clocked at up to 4.5 GHz, the Core i7-8559U is currently the fastest quad core ULV from Intel. Whether these speeds can be maintained in practice depends on the cooling capabilities of the laptop, but the performance should be above the Core i7-8650U due to the increased TDPConsidering the clocks of the Core i7-8559U, its performance should be between the 15W models Core i5-8350U and Core i7-8550U. The i5-8259U should still be faster than the i7-8550U in practice thanks to the increased TDP, especially during sustained workloads.

Graphics

The integrated Intel Iris Plus 655 Graphics is the GT3e model of the Coffee Lake GPU (Intel Gen. 9.5). It has 48 Execution Units running at 300-1200 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 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.

Intel Core i5-8259U

► remove from comparison

The Intel Core i5-8259U is a quad-core SoC for notebooks based on the Coffee Lake architecture and was announced in April 2018. Compared to its predecessor Core i5-7267U, the CPU is now a quad-core with Hyperthreading support for the execution of up to 8 threads simultaneously. The base frequency is 2.3 GHz, but the Turbo goes all the way up to 3.8 GHz. It is also equipped with an Intel Iris Plus Graphics 655 GPU with 128 MB eDRAM, 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 with FinFET transistors.

Compared to faster Core i5 and i7 models with eDRAM and 28 Watts, the i5-8259U only features 6 MB smart cache and the slowest clock of the Iris Plus GPU.

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

Considering the clocks of the Core i5-8259U, its performance should be between the 15W models Core i5-8350U and Core i7-8550U. The i5-8259U should still be faster than the i7-8550U in practice thanks to the increased TDP, especially during sustained workloads.

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 (slowest clock of the 655, the fastest is 1200 MHz in combination with the i7-8559U) 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 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.

ModelIntel Core i7-8559UIntel Core i5-8259U
SeriesIntel Coffee LakeIntel Coffee Lake
CodenameCoffee Lake-UCoffee Lake-U
Series: Coffee Lake Coffee Lake-U
» Intel Core i7-8559U2.7 - 4.5 GHz4 / 88 MB
Intel Core i7-8557U compare1.7 - 4.5 GHz4 / 88 MB
Intel Core i5-8269U compare2.6 - 4.2 GHz4 / 86 MB
Intel Core i5-8279U compare2.4 - 4.1 GHz4 / 86 MB
Intel Core i5-8259U2.3 - 3.8 GHz4 / 86 MB
Intel Core i5-8257U compare1.4 - 3.9 GHz4 / 86 MB
Intel Core i3-8109U compare3 - 3.6 GHz2 / 44 MB
Intel Core i7-8559U2.7 - 4.5 GHz4 / 88 MB
Intel Core i7-8557U compare1.7 - 4.5 GHz4 / 88 MB
Intel Core i5-8269U compare2.6 - 4.2 GHz4 / 86 MB
Intel Core i5-8279U compare2.4 - 4.1 GHz4 / 86 MB
» Intel Core i5-8259U2.3 - 3.8 GHz4 / 86 MB
Intel Core i5-8257U compare1.4 - 3.9 GHz4 / 86 MB
Intel Core i3-8109U compare3 - 3.6 GHz2 / 44 MB
Clock2700 - 4500 MHz2300 - 3800 MHz
L1 Cache256 KB256 KB
L2 Cache1 MB1 MB
L3 Cache8 MB6 MB
Cores / Threads4 / 84 / 8
TDP28 Watt28 Watt
Technology14 nm14 nm
max. Temp.100 °C100 °C
SocketFCBGA1528FCBGA1528
FeaturesDual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, Intel SSE4.1, Intel SSE 4.2Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, Intel SSE4.1, Intel SSE 4.2
iGPUIntel Iris Plus Graphics 655 (300 - 1200 MHz)Intel Iris Plus Graphics 655 (300 - 1050 MHz)
Architecturex86x86
Announced
ManufacturerIntel Coffee Lake i7-8559UIntel Coffee Lake i5-8259U

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - i7-8559U
38.1 pt (42%)
Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - i5-8259U
32.5 pt (36%)
Cinebench R23 - Cinebench R23 Multi Core
min: 3592     avg: 3734     median: 3714 (6%)     max: 3917 Points
Cinebench R23 - Cinebench R23 Single Core
min: 973     avg: 981     median: 980 (43%)     max: 991 Points
Cinebench R20 - Cinebench R20 CPU (Single Core)
466 Points (54%)
min: 369     avg: 379.5     median: 381.5 (44%)     max: 386 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
1691 Points (7%)
min: 1385     avg: 1450     median: 1451.5 (6%)     max: 1512 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
798 Points (8%)
04080120160200240280320360400440480520560600640680720760Tooltip
min: 575     avg: 620     median: 611.5 (6%)     max: 687 Points
03570105140175210245280315350385420455490525560595630665Tooltip
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
188 Points (57%)
min: 132     avg: 147.3     median: 151 (46%)     max: 154 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
7.3 Points (10%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
2.2 Points (7%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
7249 Points (59%)
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
23215 Points (27%)
wPrime 2.10 - wPrime 2.0 1024m *
234.6 s (3%)
wPrime 2.10 - wPrime 2.0 32m *
6.5 s (1%)
WinRAR - WinRAR 4.0
6656 Points (39%)
7-Zip 18.03 - 7-Zip 18.03 Multli Thread 4 runs
min: 22033     avg: 26302     median: 26301.5 (16%)     max: 30570 MIPS
min: 17799     avg: 21188     median: 19407 (12%)     max: 28824 MIPS
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 4826     avg: 5499     median: 5498.5 (66%)     max: 6171 MIPS
min: 3951     avg: 3988     median: 3981 (48%)     max: 4022 MIPS
X264 HD Benchmark 4.0 - x264 Pass 2
45.6 fps (17%)
38.5 fps (14%)
X264 HD Benchmark 4.0 - x264 Pass 1
191.4 fps (45%)
162.3 fps (38%)
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 5.523     avg: 5.7     median: 5.7 (12%)     max: 5.9 fps
012345678910111213Tooltip
min: 4.72     avg: 5.1     median: 5.4 (11%)     max: 5.42 fps
0123456789101112Tooltip
TrueCrypt - TrueCrypt Serpent
0.5 GB/s (0%)
TrueCrypt - TrueCrypt Twofish
0.8 GB/s (0%)
TrueCrypt - TrueCrypt AES
5 GB/s (0%)
Blender - Blender 2.79 BMW27 CPU *
min: 650     avg: 666     median: 666 (5%)     max: 682 Seconds
min: 699     avg: 739     median: 755 (5%)     max: 769 Seconds
R Benchmark 2.5 - R Benchmark 2.5 *
0.6 sec (14%)
min: 0.738     avg: 0.8     median: 0.8 (17%)     max: 0.806 sec
3DMark 06 - CPU - 3DMark 06 - CPU
8313 Points (18%)
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
8.3 s (2%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
18.7 s (1%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
464.1 s (2%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
24670 Points (23%)
3DMark 11 - 3DM11 Performance Physics
9162 Points (25%)
min: 7105     avg: 8284     median: 8391 (23%)     max: 9276 Points
3DMark - 3DMark Ice Storm Physics
52765 Points (34%)
47878 Points (31%)
3DMark - 3DMark Ice Storm Extreme Physics
47855 Points (40%)
3DMark - 3DMark Ice Storm Unlimited Physics
min: 17718     avg: 33720     median: 33720 (28%)     max: 49722 Points
3DMark - 3DMark Cloud Gate Physics
7377 Points (19%)
min: 5946     avg: 6710     median: 6654 (17%)     max: 7927 Points
3DMark - 3DMark Fire Strike Standard Physics
10418 Points (19%)
min: 8348     avg: 9499     median: 8871 (16%)     max: 11006 Points
3DMark - 3DMark Time Spy CPU
3625 Points (18%)
min: 2752     avg: 3045     median: 3042 (15%)     max: 3302 Points
Geekbench 5.4 - Geekbench 5.1 - 5.4 64 Bit Single-Core
723 Points (31%)
min: 951     avg: 968     median: 967.5 (42%)     max: 984 Points
Geekbench 5.4 - Geekbench 5.1 - 5.4 64 Bit Multi-Core
3660 Points (13%)
min: 3359     avg: 3483     median: 3483 (12%)     max: 3607 Points
Geekbench 5.0 - Geekbench 5.0 64 Bit Single-Core
1150 Points (51%)
min: 948     avg: 964     median: 963.5 (43%)     max: 979 Points
Geekbench 5.0 - Geekbench 5.0 64 Bit Multi-Core
4440 Points (14%)
min: 3335     avg: 3451     median: 3451 (11%)     max: 3567 Points
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
min: 5372     avg: 5384     median: 5383.5 (56%)     max: 5395 Points
min: 4200     avg: 4292     median: 4291.5 (44%)     max: 4383 Points
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
min: 17702     avg: 18095     median: 18095 (20%)     max: 18488 Points
min: 13421     avg: 13691     median: 13691 (15%)     max: 13961 Points
Geekbench 3 - Geekbench 3 64 Bit Multi-Core
16848 Points (26%)
Geekbench 3 - Geekbench 3 64 Bit Single-Core
4494 Points (74%)
Geekbench 2 - 32 Bit - Geekbench Stream
9111 Points (73%)
Geekbench 2 - 32 Bit - Geekbench Memory
10023 Points (91%)
Geekbench 2 - 32 Bit - Geekbench Floating Point
16013 Points (31%)
Geekbench 2 - 32 Bit - Geekbench Integer
15397 Points (31%)
Geekbench 2 - 32 Bit - Geekbench Total Score
13909 Points (36%)
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 1010     avg: 1046     median: 1039.5 (1%)     max: 1095 ms
WebXPRT 3 - WebXPRT 3 Score
min: 173.3     avg: 175.6     median: 176 (46%)     max: 177 Points
Power Consumption - Prime95 Power Consumption - external Monitor *
min: 36.1     avg: 43.2     median: 43.2 (7%)     max: 50.3 Watt
051015202530354045505560Tooltip
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
74.2 Watt (15%)
min: 37.6     avg: 44.5     median: 44.5 (9%)     max: 51.3 Watt
051015202530354045505560Tooltip
Power Consumption - Cinebench R15 Multi Power Efficiency - external Monitor
10.8 Points per Watt (12%)
min: 12.4     avg: 13.9     median: 13.9 (16%)     max: 15.3 Points per Watt

Average Benchmarks Intel Core i7-8559U → 100% n=22

Average Benchmarks Intel Core i5-8259U → 87% n=22

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

Add one or more devices and compare

In the following list you can select (and also search for) devices that should be added to the comparison. You can select more than one device.

restrict list: