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Intel Core Ultra 7 255H

Intel Ultra 7 255H

The Intel Core Ultra 7 255H is a mobile high-end CPU for larger notebooks based on the Arrow Lake architecture. It offers 16 cores consisting of 6 fast performance cores (Lion Cove) with up to 5.1 GHz and 8 smaller efficiency cores (Skymont) with up to 4.4 GHz clock speed and two additional "low power" efficiency cores with up to 2.5 GHz (Skymont). The CPU has access to 24 MB of cache and is specified with a TDP of 28 watt (PL1, 115W PL2).

The SoC integrates a small dedicated NPU called AI Boost with 13 TOPS (Int8) and optionally supports vPro Essentials. The integrated memory controller supports up to 192 GB LPDDR5/x-8400 or DDR5-6400 (dual channel). The integrated GPU (iGPU) is an Intel Arc 140T graphics card which offers eight Xe cores with up to 2.25 GHz.

Performance - High End

The Core Ultra 7 is superior to the top model Core Ultra 9 285H as only the maximum Turbo frequency is 200 MHz lower. Due to the improved IPC of the cores (especially the efficiency cores), the CPU should perform slightly below the level of the old Raptor Lake Core Core 9 270H (6 + 8 cores, max 5.8 / 4.1 GHz). This makes the CPU very suitable for demanding tasks such as high-end gaming and content creation.

Chiplet design

Like the desktop and HX chips, the Arrow Lake-H chips are based on individual chiplets that are placed on a 22nm base tile from Intel using Foveros 3D packaging. The CPU part comes from TSMC using the modern N3B (3nm) process. As with HX, the GPU also is produced at TSMC and is manufactured using the N5P process. SoC and I/O Tile are also from TSMC but in the older N6 process.

CodenameArrow Lake-H
SeriesIntel Arrow Lake

Series: Arrow Lake Arrow Lake-H

Intel Core Ultra 9 285H compare4.5 - 5.4 GHz16 / 16 cores24 MB L3
Intel Core Ultra 7 265H compare4.5 - 5.3 GHz16 / 16 cores24 MB L3
Intel Core Ultra 7 255H « 4.4 - 5.1 GHz16 / 16 cores24 MB L3
Intel Core Ultra 5 235H compare4.4 - 5.1 GHz16 / 16 cores18 MB L3
Intel Core Ultra 5 225H compare4.3 - 4.9 GHz14 / 14 cores18 MB L3
Clock Rate4400 - 5100 MHz
Level 3 Cache24 MB
Number of Cores / Threads16 / 16
6 x 5.1 GHz Intel Lion Cove P-core
8 x 4.4 GHz Intel Skymont E-core
2 x 2.5 GHz Intel Skymont E-core
Power Consumption (TDP = Thermal Design Power)28 Watt
TDP Turbo PL2115 Watt
Manufacturing Technology5 nm
Max. Temperature110 °C
GPUIntel Arc Graphics 140T ( - 2250 MHz)
64 Bit64 Bit support
Architecturex86
Starting Price$514 U.S.
Announcement Date01/06/2025
Product Link (external)ark.intel.com

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU
42.4 pt (71%)
AMD E1-2100
2.32 -95%
...
Intel Core i9-12950HX
40.9 -4%
Intel Core i9-13900H
40.9 -4%
AMD Ryzen 5 7645HX
41 -3%
AMD Ryzen AI 7 350
41.1 -3%
Intel Core i7-13800H
41.5 -2%
AMD Ryzen AI 9 365
41.9 -1%
Intel Core i9-12900HX
42 -1%
AMD Ryzen AI 9 HX 375
42.2 0%
Intel Core i7-14650HX
42.3 0%
Intel Core Ultra 7 255H
42.4
AMD Ryzen 7 7745HX
42.6 0%
Intel Core Ultra 9 285H
43.1 2%
AMD Ryzen AI 9 HX 370
43.1 2%
AMD Ryzen AI Max PRO 390
43.4 2%
AMD Ryzen 9 7845HX
44.1 4%
Intel Core i7-14700HX
44.3 4%
Intel Core i9-13900HX
44.9 6%
Intel Core i9-13950HX
45.1 6%
AMD Ryzen AI Max+ PRO 395
45.4 7%
...
AMD Ryzen 9 9955HX
50 18%
max:
AMD Ryzen Threadripper PRO 7995WX
60.1 42%
0%
100%
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Cinebench 2024 - Cinebench 2024 CPU Single Core
min: 123.5     avg: 126.2     median: 126.5 (71%)     max: 128.1 Points
+ 6 benchmarks and specifications   + Show comparison chart
Cinebench 2024 - Cinebench 2024 CPU Multi Core
min: 750     avg: 942     median: 856 (16%)     max: 1197 Points
+ 5 benchmarks and specifications   + Show comparison chart
Cinebench R23 - Cinebench R23 Multi Core
min: 16435     avg: 18134     median: 17652.5 (16%)     max: 22578 Points
+ 10 benchmarks and specifications   - Hide comparison chart
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Cinebench R23 - Cinebench R23 Single Core
min: 2047     avg: 2095     median: 2098.5 (88%)     max: 2152 Points
+ 10 benchmarks and specifications   - Hide comparison chart
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Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 786     avg: 805     median: 807 (88%)     max: 826 Points
+ 9 benchmarks and specifications   + Show comparison chart
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 6414     avg: 7150     median: 7015 (17%)     max: 8860 Points
+ 9 benchmarks and specifications   + Show comparison chart
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 2414     avg: 2829     median: 2835 (18%)     max: 3444 Points
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017535052570087510501225140015751750192521002275245026252800297531503325Tooltip
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 258     avg: 306.9     median: 312 (86%)     max: 322 Points
+ 9 benchmarks and specifications   - Hide comparison chart
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Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
31.3 Points (41%)
+ 1 benchmarks and specifications   + Show comparison chart
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
3.8 Points (90%)
+ 1 benchmarks and specifications   + Show comparison chart
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
11500 points (69%)
+ 1 benchmarks and specifications   + Show comparison chart
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
65269 points (47%)
+ 1 benchmarks and specifications   + Show comparison chart
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
96508 Points (62%)
+ 1 benchmarks and specifications   + Show comparison chart
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
17883 Points (22%)
+ 1 benchmarks and specifications   + Show comparison chart
wPrime 2.10 - wPrime 2.0 1024m *
319.3 s (4%)
+ 1 benchmarks and specifications   + Show comparison chart
wPrime 2.10 - wPrime 2.0 32m *
3.6 s (1%)
+ 1 benchmarks and specifications   + Show comparison chart
WinRAR - WinRAR 4.0
7777 points (12%)
+ 1 benchmarks and specifications   + Show comparison chart
7-Zip 18.03 - 7-Zip 18.03 Multi Thread 4 runs
min: 47514     avg: 57327     median: 56801 (33%)     max: 68627 MIPS
+ 10 benchmarks and specifications   + Show comparison chart
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 4589     avg: 5906     median: 6015.5 (71%)     max: 6385 MIPS
+ 10 benchmarks and specifications   + Show comparison chart
X264 HD Benchmark 4.0 - x264 Pass 2
154.7 fps (52%)
+ 1 benchmarks and specifications   + Show comparison chart
X264 HD Benchmark 4.0 - x264 Pass 1
354.5 fps (82%)
+ 1 benchmarks and specifications   + Show comparison chart
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 16.2     avg: 20.5     median: 20.5 (36%)     max: 25.8 fps
+ 9 benchmarks and specifications   + Show comparison chart
051015202530Tooltip
TrueCrypt - TrueCrypt Serpent
1.1 GB/s (32%)
+ 1 benchmarks and specifications   + Show comparison chart
TrueCrypt - TrueCrypt Twofish
1.8 GB/s (31%)
+ 1 benchmarks and specifications   + Show comparison chart
TrueCrypt - TrueCrypt AES
8.3 GB/s (22%)
+ 1 benchmarks and specifications   + Show comparison chart
Blender - Blender 3.3 Classroom CPU *
min: 256     avg: 340     median: 341 (4%)     max: 429 Seconds
+ 8 benchmarks and specifications   + Show comparison chart
Blender - Blender 2.79 BMW27 CPU *
min: 157     avg: 207.7     median: 211 (1%)     max: 251 Seconds
+ 9 benchmarks and specifications   + Show comparison chart
R Benchmark 2.5 - R Benchmark 2.5 *
min: 0.4233     avg: 0.4     median: 0.4 (9%)     max: 0.515 sec
+ 9 benchmarks and specifications   + Show comparison chart
3DMark 06 - CPU - 3DMark 06 - CPU
min: 14666     avg: 14844     median: 14843.5 (32%)     max: 15021 Points
+ 2 benchmarks and specifications   + Show comparison chart
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
7.5 s (2%)
+ 1 benchmarks and specifications   + Show comparison chart
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
16.5 s (1%)
+ 1 benchmarks and specifications   + Show comparison chart
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 79410     avg: 80381     median: 80381 (62%)     max: 81352 Points
+ 2 benchmarks and specifications   + Show comparison chart
3DMark 11 - 3DM11 Performance Physics
min: 18204     avg: 21223     median: 20949 (52%)     max: 24715 Points
+ 8 benchmarks and specifications   + Show comparison chart
3DMark - 3DMark Ice Storm Physics
min: 106965     avg: 111352     median: 111352 (90%)     max: 115738 Points
+ 2 benchmarks and specifications   + Show comparison chart
3DMark - 3DMark Ice Storm Extreme Physics
min: 106511     avg: 111384     median: 111384 (90%)     max: 116256 Points
+ 2 benchmarks and specifications   + Show comparison chart
3DMark - 3DMark Ice Storm Unlimited Physics
min: 108898     avg: 112983     median: 112983 (94%)     max: 117068 Points
+ 2 benchmarks and specifications   + Show comparison chart
3DMark - 3DMark Cloud Gate Physics
min: 19528     avg: 19733     median: 19769 (50%)     max: 19902 Points
+ 3 benchmarks and specifications   + Show comparison chart
3DMark - 3DMark Fire Strike Standard Physics
min: 27621     avg: 30658     median: 29128 (52%)     max: 37837 Points
+ 8 benchmarks and specifications   + Show comparison chart
3DMark - 3DMark Time Spy CPU
min: 9186     avg: 11565     median: 11334.5 (48%)     max: 13757 Points
+ 8 benchmarks and specifications   + Show comparison chart
Geekbench 6.4 - Geekbench 6.4 Single-Core
min: 2858     avg: 2892     median: 2894 (72%)     max: 2925 points
+ 10 benchmarks and specifications   + Show comparison chart
Geekbench 6.4 - Geekbench 6.4 Multi-Core
min: 11979     avg: 14969     median: 15223 (59%)     max: 17489 points
+ 10 benchmarks and specifications   - Hide comparison chart
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Geekbench 6.0 - Geekbench 6.0 Single-Core
3105 points (99%)
+ 1 benchmarks and specifications   + Show comparison chart
Geekbench 6.0 - Geekbench 6.0 Multi-Core
21003 points (86%)
+ 1 benchmarks and specifications   + Show comparison chart
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Single-Core
min: 1980     avg: 2081     median: 2103 (82%)     max: 2121 points
+ 9 benchmarks and specifications   + Show comparison chart
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Multi-Core
min: 11348     avg: 14420     median: 14322 (26%)     max: 17218 points
+ 9 benchmarks and specifications   + Show comparison chart
Geekbench 5.0 - Geekbench 5.0 64 Bit Single-Core
2094 points (9%)
+ 1 benchmarks and specifications   + Show comparison chart
Geekbench 5.0 - Geekbench 5.0 64 Bit Multi-Core
13465 points (42%)
+ 1 benchmarks and specifications   + Show comparison chart
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
8697 points (87%)
+ 1 benchmarks and specifications   + Show comparison chart
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
50379 points (50%)
+ 1 benchmarks and specifications   + Show comparison chart
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 427     avg: 441.3     median: 443 (1%)     max: 455 ms
+ 8 benchmarks and specifications   + Show comparison chart
Octane V2 - Octane V2 Total Score
min: 116699     avg: 119142     median: 118679 (90%)     max: 122048 Points
+ 3 benchmarks and specifications   + Show comparison chart
WebXPRT 4 - WebXPRT 4 Score
min: 291     avg: 303.9     median: 303.5 (83%)     max: 317 Points
+ 8 benchmarks and specifications   + Show comparison chart
WebXPRT 3 - WebXPRT 3 Score
min: 302     avg: 315.1     median: 315 (57%)     max: 327 Points
+ 7 benchmarks and specifications   + Show comparison chart
CrossMark - CrossMark Overall
min: 1665     avg: 1905     median: 1920 (72%)     max: 2058 Points
+ 8 benchmarks and specifications   + Show comparison chart
Power Consumption - Prime95 Power Consumption - external Monitor *
min: 56.1     avg: 76.8     median: 58.4 (10%)     max: 131.1 Watt
+ 6 benchmarks and specifications   + Show comparison chart
0102030405060708090100110120130140150160170Tooltip
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
min: 64.3     avg: 101     median: 85.8 (16%)     max: 168 Watt
+ 5 benchmarks and specifications   + Show comparison chart
0102030405060708090100110120130140150160170Tooltip
Power Consumption - Idle Power Consumption - external Monitor *
min: 4.84     avg: 8.1     median: 8.9 (6%)     max: 11.1 Watt
+ 6 benchmarks and specifications   + Show comparison chart
0510152025Tooltip
Power Consumption - Idle Power Consumption 150cd 1min *
min: 7.39     avg: 8.7     median: 8.9 (10%)     max: 9.56 Watt
+ 5 benchmarks and specifications   + Show comparison chart
0123456789101112Tooltip
Power Consumption - Power Efficiency - Cinebench R15 Multi external Monitor
min: 20.5     avg: 33.3     median: 36 (27%)     max: 40.6 Points per Watt
+ 5 benchmarks and specifications   + Show comparison chart
- Range of benchmark values
red legend - Average benchmark values
* Smaller numbers mean a higher performance

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v1.33
log 29. 20:00:19

#0 ran 0s before starting gpusingle class +0s ... 0s

#1 no ids found in url (should be separated by "_") +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 Mon, 28 Jul 2025 05:37:44 +0200 +0.001s ... 0.001s

#4 composed specs +0.019s ... 0.02s

#5 did output specs +0s ... 0.02s

#6 getting avg benchmarks for device 18903 +0.02s ... 0.04s

#7 got single benchmarks 18903 +0.024s ... 0.065s

#8 got avg benchmarks for devices +0s ... 0.065s

#9 min, max, avg, median took s +1.775s ... 1.84s

#10 return log +0.005s ... 1.845s

Reviews for the Intel Core Ultra 7 255H processor

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Asus VivoBook S16 OLED S5606CA: Intel Arc Graphics 140T, 16.00", 1.5 kg
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Asus Zenbook 14 OLED UX3405CA: Intel Arc Graphics 140T, 14.00", 1.3 kg
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LG gram Pro 2-in-1 16T90TP: Intel Arc Graphics 140T, 16.00", 1.4 kg
  External Review » LG gram Pro 2-in-1 16T90TP

Lenovo ThinkPad E16 G3-21SSS00E00: Intel Arc Graphics 140T
   » Is the Core Ultra 7 255H worth it in the ThinkPad E16 G3? We tested it

Khadas Mind 2s: Intel Arc Graphics 140T, 0.4 kg
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Lenovo Yoga Book 9 14IAH10: Intel Arc Graphics 140T, 14.00", 1.2 kg
   » Lenovo Yoga Book 9 14 Arrow Lake CPU throttling is a bit steeper than we would like

   » Latest Lenovo Yoga Book 9 14 weighs even less than the smaller 13-inch version while offering larger displays

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» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Arrow Lake

» Intel Core Ultra 9 285K
   24x 3.2 GHz - 5.7 GHz
» Intel Core Ultra 9 285HX
   24x 2.1 GHz - 5.5 GHz
» Intel Core Ultra 9 275HX
   24x 2.1 GHz - 5.4 GHz
» Intel Core Ultra 7 255HX
   20x 2.3 GHz - 5.2 GHz
» Intel Core Ultra 5 245K
   14x 3.6 GHz - 5.2 GHz
» Intel Core Ultra 5 235
   14x 3.4 GHz - 5 GHz
» Intel Core Ultra 7 265HX
   20x 2.3 GHz - 5.3 GHz
» Intel Core Ultra 9 285H
   16x 4.5 GHz - 5.4 GHz
» Intel Core Ultra 7 265H
   16x 4.5 GHz - 5.3 GHz
» Intel Core Ultra 7 255H
   16x 4.4 GHz - 5.1 GHz
» Intel Core Ultra 5 245HX
   14x 2.6 GHz - 5.1 GHz
» Intel Core Ultra 5 235HX
   14x 2.6 GHz - 5.1 GHz
» Intel Core Ultra 5 225F
   10x 3.3 GHz - 4.9 GHz
» Intel Core Ultra 5 235H
   16x 4.4 GHz - 5.1 GHz
» Intel Core Ultra 5 225H
   14x 4.3 GHz - 4.9 GHz

Surrounding CPUs

+ Intel Core i7-13700HX
   16x 1.5 GHz - 5 GHz
+ Intel Core Ultra 7 265H
   16x 4.5 GHz - 5.3 GHz
+ AMD Ryzen 7 8745HX
   8x 3.6 GHz - 5.1 GHz
+ Intel Core 9 270H
   14x 2 GHz - 5.8 GHz
+ Intel Core i9-13900HK
   14x 1.9 GHz - 5.4 GHz
» Intel Core Ultra 7 255H
   16x 4.4 GHz - 5.1 GHz
- AMD Ryzen AI 9 365
   10x 2 GHz - 5 GHz
- Intel Core Ultra 9 185H
   16x 3.8 GHz - 5.1 GHz
- Intel Core i9-13905H
   14x 1.9 GHz - 5.4 GHz
- Intel Core i9-13900H
   14x 1.9 GHz - 5.4 GHz
- Apple M3 Max 14-Core
   14x 2.75 GHz - 4.06 GHz
Klaus Hinum (Update: 2025-01- 8)