, , , , , ,
search relation.
, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
 

Intel Core i5-8257U vs Intel Core i7-8557U

Intel Core i5-8257U

► remove from comparison

The Intel Core i5-8257U is a quad-core SoC for notebooks based on the Coffee Lake architecture that was announced in the new entry level MacBook Pro 13 in mid 2019. Compared to its predecessor, the CPU is now a quad-core with Hyperthreading support for the execution of up to 8 threads simultaneously. The base frequency is only 1.4 GHz, but the Turbo goes all the way up to 3.9 GHz. It is also equipped with an Intel Iris Plus Graphics 645 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 i7-8557U model with eDRAM and 15 Watts, the i5-8257U 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

Thanks to the relative high Turbo Boost clock, the single thread performance should be very good, but still behind the faster i7 model. The short burst all core performance is clearly better compared to the old dual core predecessors thanks to the additional cores. In sustained workloads, the performance is usually limited by the TDP and cooling. In these workloads the difference to the Core i7 should be also smaller.

Graphics

The integrated Intel Iris Plus 645 Graphics is the GT3e model of the Coffee 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 with FinFET transistors, which improves the efficiency even further. Intel specifies the TDP with 15 Watts and therefore suited for thin and light laptops.

Intel Core i7-8557U

► remove from comparison

The Intel Core i7-8557U is a quad-core SoC for notebooks based on the Coffee Lake architecture that was announced in the new entry level MacBook Pro 13 in mid 2019. Compared to its predecessor, the CPU is now a quad-core with Hyperthreading support for the execution of up to 8 threads simultaneously. The base frequency is only 1.7 GHz, but the Turbo goes all the way up to 4.5 GHz. It is also equipped with an Intel Iris Plus Graphics 645 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 slower Core i5 model with eDRAM and 15 Watts, the i5-8557U 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 i7-8557U should offer an excellent single thread performance. The multi core performance is greatly improved due to the two additional cores (compared to the predecessor) but may be limited by the 15 Watt TDP (especially for sustained workloads).

Graphics

The integrated Intel Iris Plus 645 Graphics is the GT3e model of the Coffee Lake GPU (Intel Gen. 9.5). It has 48 Execution Units running at 300-1150 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 15 Watts and therefore suited for thin and light laptops.

Intel Core i5-8257UIntel Core i7-8557U
Intel Coffee LakeIntel Coffee Lake
Coffee Lake-UCoffee Lake-U
Series: Coffee Lake Coffee Lake-U
Intel Core i7-8559U compare2.7 - 4.5 GHz4 / 88 MB
Intel Core i7-8557U1.7 - 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 i5-8259U compare2.3 - 3.8 GHz4 / 86 MB
» Intel Core i5-8257U1.4 - 3.9 GHz4 / 86 MB
Intel Core i3-8109U compare3 - 3.6 GHz2 / 44 MB
Intel Core i7-8559U compare2.7 - 4.5 GHz4 / 88 MB
» Intel Core i7-8557U1.7 - 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 i5-8259U compare2.3 - 3.8 GHz4 / 86 MB
Intel Core i5-8257U1.4 - 3.9 GHz4 / 86 MB
Intel Core i3-8109U compare3 - 3.6 GHz2 / 44 MB
1400 - 3900 MHz1700 - 4500 MHz
256 KB256 KB
1 MB1 MB
6 MB8 MB
4 / 84 / 8
15 28
14 14
100 °C100 °C
FCBGA1528FCBGA1528
Dual-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 645 (300 - 1050 MHz)Intel Iris Plus Graphics 645 (300 - 1150 MHz)
Architecturex86x86
Intel Coffee Lake i5-8257UIntel Coffee Lake i7-8557U

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - i5-8257U
38.1 pt (43%)
Cinebench R23 - Cinebench R23 CPU (Multi Core)
4033 Points (7%)
Cinebench R23 - Cinebench R23 CPU (Single Core)
1003 Points (59%)
Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 388     avg: 393     median: 393 (61%)     max: 398 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 1494     avg: 1520     median: 1519.5 (6%)     max: 1545 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 629     avg: 633     median: 633.5 (7%)     max: 637.97 Points
03570105140175210245280315350385420455490525560595630629.43621.58626.52623.43623.64624.54625.35624.72622.35623.26622.19623.5625.34621.73623.71624.28622.65622.69622.4624.54622.28622.38623.54621.74624.19625.72624.43624.54622.94624.74621.11622.14622.51623.74623.98622.54622.49623.13625.17625.97624.45628.01626.27625.53625.95627.74625.71625.17623.86625.35637.93611.7633.65637.3634.57636.99636.46637.49637.97637.56635.46636.34632.51635.51633636.45633.95634.38635.53634.08633.04633.33635.37634.16634.13Tooltip
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 156     avg: 158     median: 157.7 (58%)     max: 159.33 Points
7-Zip 18.03 - 7-Zip 18.03 Multli Thread 4 runs
19620 MIPS (14%)
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
4083 MIPS (59%)
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
5.3 fps (11%)
01234567891011120.733.024.616.367.297.688.549.329.741010.410.71111.211.411.711.611.811.611.911.91212.111.71110.910.910.510.110.19.99.819.669.459.419.249.279.048.858.898.728.68.628.568.448.538.458.558.568.468.48.398.198.18.158.098.017.937.967.867.827.757.757.717.677.587.597.57.467.357.357.37.267.277.227.187.167.137.057.097.037.016.956.986.946.926.856.886.866.786.746.756.726.636.666.626.576.536.536.526.466.496.476.456.436.46.426.396.376.316.296.256.256.226.226.176.196.166.116.116.076.056.036.046.035.995.975.985.965.945.915.935.895.885.875.855.855.855.85.825.85.785.765.765.745.725.725.715.685.675.655.655.645.615.635.615.595.595.575.585.545.565.555.535.545.525.535.515.535.525.515.55.525.515.55.515.495.495.485.55.485.475.485.475.455.475.465.435.455.445.465.455.475.465.465.485.475.485.515.495.525.535.545.585.595.625.635.665.665.655.645.645.645.635.635.645.645.625.635.635.625.625.625.625.65.625.65.625.615.65.615.65.65.65.585.555.565.565.545.565.545.555.555.545.545.545.525.535.525.515.525.535.525.55.525.515.515.495.495.55.495.485.55.495.485.485.485.485.475.485.485.475.485.475.485.465.475.465.465.465.475.465.455.465.445.455.435.455.435.435.445.435.425.425.435.425.415.425.415.45.415.45.415.395.415.45.395.395.395.385.395.385.395.395.385.385.395.385.395.385.395.375.385.385.385.375.375.375.355.365.355.365.355.365.355.345.345.325.335.325.315.35.35.295.295.295.275.285.265.265.265.245.245.245.235.245.235.225.215.215.25.195.195.185.155.155.155.145.155.145.125.125.115.085.095.095.095.075.085.075.075.085.085.085.085.15.125.125.145.165.175.195.195.215.225.225.245.265.275.285.285.295.295.295.285.285.285.285.295.295.285.295.285.295.295.295.295.285.295.285.285.295.285.285.285.295.285.285.275.275.285.275.275.275.265.275.265.275.265.265.255.255.265.265.255.255.255.245.245.245.255.245.245.245.245.245.235.245.245.235.235.235.225.225.225.225.225.215.25.25.25.195.175.185.175.185.175.175.165.165.165.145.155.145.145.145.135.145.135.135.135.125.125.125.125.125.125.125.125.115.115.115.15.115.15.15.095.095.095.095.085.085.085.075.085.085.075.075.075.085.075.085.075.075.065.065.065.055.065.065.065.055.055.045.045.045.045.035.035.025.015.015.015.0155.0154.994.994.994.994.994.984.984.984.984.974.964.974.964.974.954.954.954.954.954.954.954.954.954.954.954.944.934.944.944.934.944.934.934.934.934.924.924.924.914.914.94.94.94.894.894.894.884.894.884.874.874.874.874.874.874.864.854.854.854.854.854.854.844.854.844.844.844.844.834.834.834.834.824.824.814.814.814.814.84.84.84.84.794.794.794.794.794.794.784.784.784.784.784.774.784.784.784.784.784.84.84.814.824.824.844.844.854.864.874.884.884.894.94.94.914.914.924.934.944.954.954.964.974.974.984.984.9955.015.015.025.035.035.045.055.055.065.065.075.075.075.085.085.095.095.15.15.15.115.115.135.135.145.145.145.155.155.165.175.175.185.185.185.195.25.215.215.215.225.235.235.245.245.255.27Tooltip
Blender 2.79 - Blender 2.79 BMW27 CPU *
714 Seconds (5%)
3DMark 11 - 3DM11 Performance Physics
7866 Points (29%)
3DMark - 3DMark Fire Strike Standard Physics
8936 Points (23%)
3DMark - 3DMark Time Spy CPU
2740 Points (19%)
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
4608 (58%)
Geekbench 4.1 - 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
16580 (21%)
Geekbench 5.0 - Geekbench 5.0 64 Bit Single-Core
989 (53%)
Geekbench 5.0 - Geekbench 5.0 64 Bit Multi-Core
4181 (13%)
Geekbench 5.3 - Geekbench 5.1 - 5.4 64 Bit Single-Core
948 (50%)
1079 (57%)
Geekbench 5.3 - Geekbench 5.1 - 5.4 64 Bit Multi-Core
3858 (23%)
4119 (24%)
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 901.4     avg: 914     median: 913.8 (2%)     max: 926.1 ms
Octane V2 - Octane V2 Total Score
min: 38704     avg: 39388     median: 39387.5 (57%)     max: 40071 Points
WebXPRT 3 - WebXPRT 3 Score
210 Points (67%)

Average Benchmarks Intel Core i5-8257U → 100% n=2

Average Benchmarks Intel Core i7-8557U → 110% n=2

- 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:

show all (including archived), 2021, 2020
v1.16
log 26. 08:38:04

#0 checking url part for id 11433 +0s ... 0s

#1 checking url part for id 11435 +0s ... 0s

#2 not redirecting to Ajax server +0s ... 0s

#3 did not recreate cache, as it is less than 5 days old! Created at Sat, 25 Sep 2021 13:09:19 +0200 +0s ... 0s

#4 composed specs +0.004s ... 0.004s

#5 did output specs +0s ... 0.004s

#6 getting avg benchmarks for device 11433 +0.004s ... 0.008s

#7 got single benchmarks 11433 +0.007s ... 0.015s

#8 getting avg benchmarks for device 11435 +0s ... 0.015s

#9 got single benchmarks 11435 +0.004s ... 0.019s

#10 got avg benchmarks for devices +0s ... 0.019s

#11 min, max, avg, median took s +0.025s ... 0.044s

#12 return log +0.004s ... 0.048s

Please share our article, every link counts!
> Notebook / Laptop Reviews and News > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)