Intel Core i5-8259U
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.
Series Intel Coffee Lake Codename Coffee Lake-U Series: Coffee Lake Coffee Lake-U Clock Rate 2300 - 3800 MHz Level 1 Cache 256 KB Level 2 Cache 1 MB Level 3 Cache 6 MB Number of Cores / Threads 4 / 8 Power Consumption (TDP = Thermal Design Power) 28 Watt Manufacturing Technology 14 nm Max. Temperature 100 °C Socket FCBGA1528 Features Dual-Channel DDR4 Memory Controller, HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, Intel SSE4.1, Intel SSE 4.2 GPU Intel Iris Plus Graphics 655 (300 - 1050 MHz)64 Bit 64 Bit support Architecture x86 Announcement Date 04/03/2018 Product Link (external) ark.intel.com
Benchmarks Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU
27.6 pt (38%)
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Cinebench R23 - Cinebench R23 Multi Core
min: 3592 avg: 3792 median: 3728 (3%) max: 4025 Points
CPU TDP ? TDP 28 W 100% 93%
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Cinebench R23 - Cinebench R23 Single Core
min: 959 avg: 976 median: 976.5 (42%) max: 991 Points
CPU TDP ? TDP 28 W 98% 100%
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Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 369 avg: 378 median: 381 (42%) max: 386 Points
CPU TDP ? TDP 28 W 98% 100%
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Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 1385 avg: 1473 median: 1471 (4%) max: 1567 Points
CPU TDP ? TDP 28 W 100% 93%
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max:
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 575 avg: 622 median: 615 (4%) max: 687 Points
CPU TDP ? TDP 28 W 100% 94%
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max:
0 35 70 105 140 175 210 245 280 315 350 385 420 455 490 525 560 595 630 665 Tooltip Chuwi CoreBook X: Ø571 (559.33-575.29)
Geekom Mini IT8-GM08i5T: Ø594 (591.39-600.38)
Apple MacBook Pro 13 2018 Touchbar i5 macOS Software Update: Ø579 (560-607)
Apple MacBook Pro 13 2018 Touchbar i5 macOS Software Update: Ø688 (666.16-693.55)
GMK NucBox 2: Ø612 (608.07-614.94)
ACEMagician ACE-CK10-8259U: Ø621 (611.68-659.87)
Chuwi CoreBook X Pro: Ø629 (624.68-636.38)
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 132 avg: 147.1 median: 148.7 (45%) max: 154 Points
CPU TDP ? TDP 28 W 100% 97%
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Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
7.1 Points (9%)
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Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
1.7 Points (42%)
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Cinebench R10 - Cinebench R10 Rend. Single (32bit)
5706 points (34%)
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Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
21869 points (16%)
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Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
27377 Points (19%)
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Cinebench R10 - Cinebench R10 Rend. Single (64bit)
7397 Points (9%)
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wPrime 2.10 - wPrime 2.0 1024m *
248.6 s (3%)
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VIA C3-M C3-M-1200
wPrime 2.10 - wPrime 2.0 32m *
7.5 s (2%)
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5348 points (8%)
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7-Zip 18.03 - 7-Zip 18.03 Multli Thread 4 runs
min: 17799 avg: 20778 median: 19104.5 (11%) max: 28824 MIPS
CPU TDP ? TDP 28 W 94% 100%
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max:
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 3753 avg: 3949 median: 3975.5 (48%) max: 4022 MIPS
CPU TDP ? TDP 28 W 97% 100%
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max:
X264 HD Benchmark 4.0 - x264 Pass 2
min: 38.5 avg: 39.5 median: 39.5 (14%) max: 40.5 fps
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X264 HD Benchmark 4.0 - x264 Pass 1
min: 162.3 avg: 165.1 median: 165.1 (38%) max: 167.95 fps
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max:
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 4.72 avg: 5.2 median: 5.4 (9%) max: 5.49 fps
CPU TDP ? TDP 28 W 97% 100%
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max:
0 1 2 3 4 5 6 7 8 9 10 11 12 Tooltip Apple MacBook Pro 13 2018 Touchbar i5: Ø5.24 (0.69-12.2)
Chuwi CoreBook X: Ø5.29 (0.68-11.2)
Geekom Mini IT8-GM08i5T: Ø5.96 (0.81-11.8)
GMK NucBox 2: Ø5.69 (0.65-10.1)
Chuwi CoreBook X Pro: Ø5.85 (0.69-11.2)
ACEMagician ACE-CK10-8259U: Ø5.98 (0.76-11.7)
TrueCrypt - TrueCrypt Serpent
0.5 GB/s (14%)
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TrueCrypt - TrueCrypt Twofish
0.8 GB/s (13%)
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TrueCrypt - TrueCrypt AES
4.1 GB/s (11%)
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Blender - Blender 3.3 Classroom CPU *
1331 Seconds (17%)
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Blender - Blender 2.79 BMW27 CPU *
min: 688 avg: 730 median: 729.5 (5%) max: 769 Seconds
CPU TDP ? TDP 28 W 100% 100%
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R Benchmark 2.5 - R Benchmark 2.5 *
min: 0.738 avg: 0.8 median: 0.8 (17%) max: 0.818 sec
CPU TDP ? TDP 28 W 100% 101%
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3DMark 06 - CPU - 3DMark 06 - CPU
7916 Points (17%)
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max:
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
11.1 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 *
24.3 s (1%)
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Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
589 s (3%)
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VIA C3-M C3-M-1200
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
25093 Points (22%)
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3DMark 11 - 3DM11 Performance Physics
min: 7105 avg: 8348 median: 8528.5 (23%) max: 9276 Points
CPU TDP ? TDP 28 W 100% 91%
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3DMark - 3DMark Ice Storm Physics
min: 47878 avg: 49579 median: 49578.5 (40%) max: 51279 Points
CPU TDP ? TDP 28 W 100% 93%
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3DMark - 3DMark Ice Storm Extreme Physics
min: 47855 avg: 49509 median: 49509 (40%) max: 51163 Points
CPU TDP ? TDP 28 W 100% 94%
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3DMark - 3DMark Ice Storm Unlimited Physics
min: 17718 avg: 40451 median: 49722 (42%) max: 53914 Points
CPU TDP ? TDP 28 W 72% 100%
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3DMark - 3DMark Cloud Gate Physics
min: 5946 avg: 6904 median: 6670.5 (17%) max: 7927 Points
CPU TDP ? TDP 28 W 100% 93%
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3DMark - 3DMark Fire Strike Standard Physics
min: 8348 avg: 9726 median: 9743 (17%) max: 11006 Points
CPU TDP ? TDP 28 W 98% 100%
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3DMark - 3DMark Time Spy CPU
min: 2752 avg: 3096 median: 3132 (13%) max: 3346 Points
CPU TDP ? TDP 28 W 100% 98%
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Geekbench 5.5 - Geekbench 5.1 - 5.4 64 Bit Single-Core
min: 948 avg: 961 median: 951 (40%) max: 984 points
CPU TDP ? TDP 28 W 98% 100%
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Geekbench 5.5 - Geekbench 5.1 - 5.4 64 Bit Multi-Core
min: 3359 avg: 3602 median: 3607 (6%) max: 3839 points
CPU TDP ? TDP 28 W 100% 91%
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Geekbench 5.0 - Geekbench 5.0 64 Bit Single-Core
min: 944 avg: 957 median: 948 (4%) max: 979 points
CPU TDP ? TDP 28 W 98% 100%
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Geekbench 5.0 - Geekbench 5.0 64 Bit Multi-Core
min: 3335 avg: 3571 median: 3567 (11%) max: 3811 points
CPU TDP ? TDP 28 W 100% 91%
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Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
min: 4200 avg: 4265 median: 4211 (42%) max: 4383 points
CPU TDP ? TDP 28 W 98% 100%
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Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
min: 13421 avg: 14122 median: 13961 (16%) max: 14984 points
CPU TDP ? TDP 28 W 100% 91%
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Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 1010 avg: 1054 median: 1068 (1%) max: 1095 ms
CPU TDP ? TDP 28 W 100% 100%
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WebXPRT 4 - WebXPRT 4 Score
140.3 Points (40%)
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WebXPRT 3 - WebXPRT 3 Score
min: 173.3 avg: 176.9 median: 176 (37%) max: 182.4 Points
CPU TDP ? TDP 28 W 100% 96%
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CrossMark - CrossMark Overall
954 Points (37%)
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Power Consumption - Prime95 Power Consumption - external Monitor *
min: 36.1 avg: 42 median: 39.5 (7%) max: 50.3 Watt
CPU TDP ? TDP 28 W 101% 100%
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0 5 10 15 20 25 30 35 40 45 50 55 60 Tooltip Chuwi CoreBook X: Ø36.1 (17.5-61.3)
ACEMagician ACE-CK10-8259U: Ø39.5 (37.2-54.3)
Chuwi CoreBook X Pro: Ø50.3 (48-56.5)
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
min: 37.6 avg: 44.2 median: 43.7 (8%) max: 51.3 Watt
CPU TDP ? TDP 28 W 100% 100%
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0 5 10 15 20 25 30 35 40 45 50 55 60 Tooltip Chuwi CoreBook X: Ø37.6 (30.2-61.8)
ACEMagician ACE-CK10-8259U: Ø43.7 (36.9-52.4)
Chuwi CoreBook X Pro: Ø51.3 (47-56.3)
Power Consumption - Idle Power Consumption - external Monitor *
13.9 Watt (10%)
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Intel Core i5-11500B
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0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Tooltip ACEMagician ACE-CK10-8259U: Ø13.9 (13.7-15)
Power Consumption - Cinebench R15 Multi Power Efficiency - external Monitor
min: 12.4 avg: 13.9 median: 13.9 (10%) max: 15.3 Points per Watt
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Intel Core i5-11500B
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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 i5-8259U processor
ACEMagician ACE-CK10-8259U mini PC review - quiet office PC with space for up to three SSDs The ACEMagician ACE-CK10-8259U is a small office PC based on a native 4-core processor. However, its processor is still part of the Coffee Lake generation, whic...
Intel Core i5-8259U | Intel Iris Plus Graphics 655 | | 449 g
Geekom Mini IT8 SFF desktop hands-on The Geekom Mini IT8 is a compact desktop. Despite its tiny footprint, it packs some decent power thanks to its quad-core CPU and Intel Iris Plus Graphics 655 iG...
Intel Core i5-8259U | Intel Iris Plus Graphics 655 | | 586 g
Chuwi CoreBook X Pro laptop review: 120 Hz display for cheap The CoreBook X Pro is the least expensive 15.6-inch laptop you can find with a 120 Hz panel. The catch, however, is you'll have to deal with substantial cut cor...
Intel Core i5-8259U | Intel Iris Plus Graphics 655 | 15.60" | 1.8 kg
Chuwi CoreBook X Laptop Review: Like a Huawei MateBook, But Cheaper The CoreBook X is a good solution for those who want to maximize display quality and colors for a budget price. Nonetheless, there are a bunch of smaller detail...
Intel Core i5-8259U | Intel Iris Plus Graphics 655 | 14.00" | 1.5 kg
GMK NucBox 2 Mini PC Review: Reasonably Priced with Good Upgradeability The GMK uses the same 8th gen Intel CPU as the 2018 MacBook Pro 13 for less than $500 USD retail. Build quality and performance impressions are solid even if a ...
Intel Core i5-8259U | Intel Iris Plus Graphics 655 | | 430 g
Apple MacBook Pro 13 2018 Touchbar i5 : Intel Iris Plus Graphics 655, 13.30", 1.4 kg
Review » Apple MacBook Pro 13 2018 (Touch Bar, i5) Laptop Review
Chuwi CoreBook X Pro : Intel Iris Plus Graphics 655, 15.60", 1.8 kg
External Review » Chuwi CoreBook X Pro
Chuwi CoreBook X : Intel Iris Plus Graphics 655, 14.00", 1.5 kg
External Review » Chuwi CoreBook X
Apple MacBook Pro 13 2018 Touchbar i5 : Intel Iris Plus Graphics 655, 13.30", 1.4 kg
External Review » Apple MacBook Pro 13 2018 Touchbar i5
Chuwi CoreBook X Pro : Intel Iris Plus Graphics 655, 15.60", 1.8 kg
» Official Chuwi CoreBook X Pro page is misleading and embarrassingly full of errors
Chuwi CoreBook X : Intel Iris Plus Graphics 655, 14.00", 1.5 kg
» The $500 USD Chuwi CoreBook X is actually not a terrible Huawei MateBook X knockoff
GMK NucBox 2 : Intel Iris Plus Graphics 655, 0.4 kg
» GMK NucBox and NucBox 2 mini PCs are 20 percent off for Amazon Prime Day
»
GMK NucBox 2 mini PC is only $399 USD for a limited time with 8 GB RAM and 256 GB NVMe SSD
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Other CPUs of the series Coffee Lake Surrounding CPUs
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