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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 GHz14 / 14 cores18 MB L3
Intel Core Ultra 5 225H compare4.3 - 4.9 GHz14 / 14 cores18 MB L3
Clock Rate4400 - 5100 MHz
Level 2 Cache26 MB
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 Crestmont E-Core
Power Consumption (TDP = Thermal Design Power)28 Watt
TDP Turbo PL2115 Watt
Manufacturing Technology3 nm
Max. Temperature110 °C
GPUIntel Arc Graphics 140T ( - 2250 MHz)
NPU / AI13 TOPS INT8
Chip AI96 TOPS INT8
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
42.1 pt (70%)
Restrict / Search: Model: Max. age: years
Cinebench 2024 - Cinebench 2024 CPU Single Core
min: 119     avg: 123.8     median: 124.3 (62%)     max: 128.1 Points
Cinebench 2024 - Cinebench 2024 CPU Multi Core
min: 750     avg: 947     median: 903 (17%)     max: 1197 Points
Cinebench R23 - Cinebench R23 Multi Core
min: 16105     avg: 18247     median: 17812 (17%)     max: 22578 Points
Restrict / Search: Model: Max. age: years
Cinebench R23 - Cinebench R23 Single Core
min: 1874     avg: 2062     median: 2079 (85%)     max: 2152 Points
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Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 748     avg: 793     median: 801.5 (87%)     max: 826 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 6356     avg: 7172     median: 6973.5 (17%)     max: 8860 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 2414     avg: 2815     median: 2815.5 (18%)     max: 3444 Points
Restrict / Search: Model: Max. age: years
017535052570087510501225140015751750192521002275245026252800297531503325Tooltip
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 258     avg: 304.6     median: 309 (86%)     max: 322 Points
Restrict / Search: Model: Max. age: years
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
31.3 Points (41%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
3.8 Points (90%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
11500 points (69%)
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
65269 points (47%)
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
96508 Points (62%)
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
17883 Points (22%)
wPrime 2.10 - wPrime 2.0 1024m *
319.3 s (4%)
wPrime 2.10 - wPrime 2.0 32m *
3.6 s (1%)
WinRAR - WinRAR 4.0
7777 points (12%)
7-Zip 18.03 - 7-Zip 18.03 Multi Thread 4 runs
min: 42155     avg: 56980     median: 56812 (33%)     max: 68652 MIPS
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 4589     avg: 5895     median: 5963 (70%)     max: 6385 MIPS
X264 HD Benchmark 4.0 - x264 Pass 2
154.7 fps (4%)
X264 HD Benchmark 4.0 - x264 Pass 1
354.5 fps (9%)
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 13.7     avg: 20.2     median: 20.6 (36%)     max: 25.8 fps
051015202530Tooltip
TrueCrypt - TrueCrypt Serpent
1.1 GB/s (32%)
TrueCrypt - TrueCrypt Twofish
1.8 GB/s (31%)
TrueCrypt - TrueCrypt AES
8.3 GB/s (22%)
Blender - Blender 3.3 Classroom CPU *
min: 256     avg: 349.4     median: 332 (4%)     max: 492 Seconds
Blender - Blender 2.79 BMW27 CPU *
min: 157     avg: 209.9     median: 204.5 (1%)     max: 293 Seconds
R Benchmark 2.5 - R Benchmark 2.5 *
min: 0.4233     avg: 0.4     median: 0.4 (9%)     max: 0.515 sec
3DMark 06 - CPU - 3DMark 06 - CPU
min: 14666     avg: 14844     median: 14843.5 (32%)     max: 15021 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
7.5 s (2%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
16.5 s (1%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 79410     avg: 80381     median: 80381 (62%)     max: 81352 Points
3DMark 11 - 3DM11 Performance Physics
min: 17409     avg: 20978     median: 20835.5 (51%)     max: 24715 Points
3DMark - 3DMark Ice Storm Physics
min: 106965     avg: 111352     median: 111352 (90%)     max: 115738 Points
3DMark - 3DMark Ice Storm Extreme Physics
min: 106511     avg: 111384     median: 111384 (90%)     max: 116256 Points
3DMark - 3DMark Ice Storm Unlimited Physics
min: 108898     avg: 112983     median: 112983 (91%)     max: 117068 Points
3DMark - 3DMark Cloud Gate Physics
min: 13466     avg: 19080     median: 19769 (50%)     max: 23195 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 22456     avg: 30325     median: 29128 (52%)     max: 37837 Points
3DMark - 3DMark Time Spy CPU
min: 6177     avg: 11059     median: 11238 (47%)     max: 13757 Points
Geekbench 6.5 - Geekbench 6.5 Single-Core
min: 2712     avg: 2853     median: 2867 (66%)     max: 2925 points
Geekbench 6.5 - Geekbench 6.5 Multi-Core
min: 11979     avg: 15024     median: 14925 (58%)     max: 17489 points
Restrict / Search: Model: Max. age: years
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Single-Core
min: 1938     avg: 2052     median: 2051 (69%)     max: 2121 points
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Multi-Core
min: 11348     avg: 14435     median: 14208.5 (25%)     max: 17218 points
Geekbench 5.0 - Geekbench 5.0 64 Bit Single-Core
2094 points (9%)
Geekbench 5.0 - Geekbench 5.0 64 Bit Multi-Core
13465 points (42%)
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
8697 points (87%)
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
50379 points (49%)
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 427     avg: 455.1     median: 453 (1%)     max: 510 ms
Octane V2 - Octane V2 Total Score
min: 112005     avg: 117358     median: 117689 (78%)     max: 122048 Points
WebXPRT 4 - WebXPRT 4 Score
min: 247     avg: 294.2     median: 298 (78%)     max: 317 Points
WebXPRT 3 - WebXPRT 3 Score
min: 273     avg: 311.9     median: 313 (56%)     max: 331 Points
CrossMark - CrossMark Overall
min: 1610     avg: 1894     median: 1923 (72%)     max: 2058 Points
Power Consumption - Prime95 Power Consumption - external Monitor *
min: 40.3     avg: 73.7     median: 58.8 (10%)     max: 131.1 Watt
0102030405060708090100110120130140150160170Tooltip
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
min: 59.7     avg: 86.8     median: 68.7 (13%)     max: 168 Watt
0102030405060708090100110120130140150160170Tooltip
Power Consumption - Idle Power Consumption - external Monitor *
min: 3.5     avg: 7.3     median: 7.1 (5%)     max: 11.1 Watt
05101520253035Tooltip
Power Consumption - Idle Power Consumption 150cd 1min *
min: 3.6     avg: 18.7     median: 8.8 (6%)     max: 137.5 Watt
0102030405060708090100110120130Tooltip
Power Consumption - Power Efficiency - Cinebench R15 Multi external Monitor
min: 20.5     avg: 34.2     median: 39.5 (29%)     max: 43.2 Points per Watt
- Range of benchmark values
red legend - Average benchmark values
* Smaller numbers mean a higher performance

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v1.34
log 05. 10:37:52

#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 Tue, 04 Nov 2025 05:37:43 +0100 +0.001s ... 0.001s

#4 composed specs +0.012s ... 0.012s

#5 did output specs +0s ... 0.012s

#6 getting avg benchmarks for device 18903 +0.016s ... 0.029s

#7 got single benchmarks 18903 +0.036s ... 0.064s

#8 got avg benchmarks for devices +0s ... 0.064s

#9 min, max, avg, median took s +1.035s ... 1.099s

#10 return log +0.003s ... 1.102s

Reviews for the Intel Core Ultra 7 255H processor

Dell 16 Premium laptop review: Faster and more efficient than the XPS 16

Dell 16 Premium laptop review: Faster and more efficient than the XPS 16

Stop with the "XPS is dead" headlines — the Dell 16 Premium is a continuation of the series with similar hardware but newer Intel and Nvidia options for even fa...
Intel Core Ultra 7 255H | NVIDIA GeForce RTX 5070 Laptop | 16.30" | 2.3 kg
The Firefly successor that bets on Intel ARC: HP ZBook 8 G1i 14 laptop review

The Firefly successor that bets on Intel ARC: HP ZBook 8 G1i 14 laptop review

With the 2025 generation, HP retires its ZBook Firefly branding, instead selling the HP ZBook 8 G1i 14 as its affordable workstation laptop. The newest version ...
Intel Core Ultra 7 255H | Intel Arc Graphics 140T | 14.00" | 1.7 kg
Intel subnotebook regains ground — Asus ZenBook 14 OLED UX3405CA review

Intel subnotebook regains ground — Asus ZenBook 14 OLED UX3405CA review

Intel Evo or AMD Ryzen AI ZenBook – which one takes the crown this year as the better subnotebook? Which is lighter, faster, or simply the more well-rounded pac...
Intel Core Ultra 7 255H | Intel Arc Graphics 140T | 14.00" | 1.3 kg
Eurocom Blitz Ultra 2 14 laptop review: Strong serviceability at the cost of weight

Eurocom Blitz Ultra 2 14 laptop review: Strong serviceability at the cost of weight

The Blitz Ultra 2 14 is one of the very few 14-inch laptops with support for two M.2 2280 SSDs and two removable DDR5 SODIMM modules for a total of up to 128 GB...
Intel Core Ultra 7 255H | Intel Arc Graphics 140T | 14.00" | 1.6 kg
Dell 14 Premium laptop review: An XPS 14 in all but name

Dell 14 Premium laptop review: An XPS 14 in all but name

The revered XPS name may be gone, but it lives on in the new Dell 14 Premium. The latest model includes a faster Arrow Lake-H processor with better Turbo Boost ...
Intel Core Ultra 7 255H | Intel Arc Graphics 140T | 14.50" | 1.7 kg

Honor MagicBook Art 14 2025: Intel Arc Graphics 140T, 14.60", 1 kg
  Review » 1 kg Ultrabook with Arrow Lake and excellent input devices - Honor MagicBook Art 14 2025 Review

Lenovo ThinkPad E14 G7-21SYS00H00: Intel Arc Graphics 140T, 14.00", 1.4 kg
  Review » Lenovo ThinkPad E14 G7 review - The affordable office laptop stands out from the competition with its 120 Hz display

Lenovo ThinkBook 14 Gen 8 21SJ007SGE: Intel Arc Graphics 140T, 14.00", 1.5 kg
  Review » This affordable Lenovo laptop is more upgradeable than most ThinkPads: ThinkBook 14 Gen 8 IAL review

Lenovo Yoga Pro 9 16IAH G10 RTX 5060: NVIDIA GeForce RTX 5060 Laptop, 16.00", 1.9 kg
  Review » Lenovo Yoga Pro 9i 16IAH G10 Aura Edition Review: Great multimedia laptop impresses with 1,100-nits OLED

Lenovo Yoga Book 9 14IAH10: Intel Arc Graphics 140T, 14.00", 1.2 kg
  Review » Lenovo Yoga Book 9 14IAH10 convertible review: Double the screen without double the weight

Xiaomi RedmiBook Pro 14 2025: Intel Arc Graphics 140T, 14.00", 1.4 kg
  Review » Xiaomi RedmiBook Pro 14 2025 review - Now with Arrow Lake and 16 hours of battery life

Acer Aspire Vero 16 AV16-71P: Intel Arc Graphics 140T, 16.00", 1.8 kg
  External Review » Acer Aspire Vero 16 AV16-71P

Asus Vivobook S16 S3607CA: Intel Arc Graphics 140T, 16.00", 1.7 kg
  External Review » Asus Vivobook S16 S3607CA

Lenovo Yoga Pro 9 16IAH G10 RTX 5060: NVIDIA GeForce RTX 5060 Laptop, 16.00", 1.9 kg
  External Review » Lenovo Yoga Pro 9 16IAH G10 RTX 5060

Lenovo Yoga Pro 9 16IAH10: NVIDIA GeForce RTX 5070 Laptop, 16.00", 1.9 kg
  External Review » Lenovo Yoga Pro 9 16IAH10

Dell 16 Premium DA16250: NVIDIA GeForce RTX 5070 Laptop, 16.30", 2.3 kg
  External Review » Dell 16 Premium DA16250

Dell 14 Premium DA14250: NVIDIA GeForce RTX 4050 Laptop GPU, 14.50", 1.7 kg
  External Review » Dell 14 Premium DA14250

LG gram Pro 16Z90TP: Intel Arc Graphics 140T, 16.00", 1.2 kg
  External Review » LG gram Pro 16Z90TP

Asus Vivobook S14 S3407CA: Intel Arc Graphics 140T, 14.00", 1.4 kg
  External Review » Asus Vivobook S14 S3407CA

Lenovo Yoga Book 9 14IAH10: Intel Arc Graphics 140T, 14.00", 1.2 kg
  External Review » Lenovo Yoga Book 9 14IAH10

Asus VivoBook S16 OLED S5606CA: Intel Arc Graphics 140T, 16.00", 1.5 kg
  External Review » Asus VivoBook S16 OLED S5606CA

Asus Zenbook 14 OLED UX3405CA: Intel Arc Graphics 140T, 14.00", 1.3 kg
  External Review » Asus Zenbook 14 OLED UX3405CA

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

Dell 16 Premium DA16250: NVIDIA GeForce RTX 5070 Laptop, 16.30", 2.3 kg
   » A small 130 W USB-C adapter powers the Dell 16 Premium with Core Ultra H and RTX 5070 graphics

   » Dell 16 Premium CPU runs 15 to 20 percent faster than on the XPS 16 9640, but there's a catch

   » Dell 16 Premium 60 W GeForce RTX 5070 is both amazing and disappointing

HP ZBook 8 G1i 14: Intel Arc Graphics 140T, 14.00", 1.7 kg
   » The return of an old standard: HP brings back the RJ45-Ethernet port to many business models

Asus ZenBook 14 OLED UX3405CA, Ultra 7 255H: Intel Arc Graphics 140T, 14.00", 1.3 kg
   » Intel ZenBook 14 OLED features Wi-Fi 7 — but the AMD version delivers faster transfer speeds

   » Is the ZenBook 14 better with Intel or AMD this year?

Eurocom Blitz Ultra 2 14: Intel Arc Graphics 140T, 14.00", 1.6 kg
   » Eurocom Blitz Ultra 2 comes standard with features that most other 14-inch laptops omit

Honor MagicBook Art 14 2025: Intel Arc Graphics 140T, 14.60", 1 kg
   » Honor advertises a peak brightness of up to 1600 nits for the MagicBook Art 14 2025, but we only measure 740 nits

Dell 14 Premium: Intel Arc Graphics 140T, 14.50", 1.7 kg
   » The XPS 14 lives on through the Dell 14 Premium with very few changes

   » Dell 14 Premium costs as much as the lighter and more powerful Razer Blade 14

Honor MagicBook Art 14 2025: Intel Arc Graphics 140T, 14.60", 1 kg
   » Honor's new MagicBook Art 14 2025 has a better keyboard than modern ThinkPads

Lenovo ThinkPad E14 G7-21SYS00H00: Intel Arc Graphics 140T, 14.00", 1.4 kg
   » Lenovo ThinkPad E14 & ThinkBook 14 - Business vs. prosumer in comparison

   » Lenovo finally offers a better 120 Hz display for the affordable ThinkPad E14

   » 14-inch office laptop with great maintenance options: ThinkPad E14 G7 offers 2 SSD and 2 RAM slots

Lenovo ThinkBook 14 Gen 8 21SJ007SGE: Intel Arc Graphics 140T, 14.00", 1.5 kg
   » This Lenovo ThinkBook laptop is an upgradeability dream - and it is affordable

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
   » Modular Khadas Mind 2s mini PC reviewed: Portable desktop replacement can fit into pockets

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 9 285
   24x 1.9 GHz - 5.6 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 265KF
   20x 3.3 GHz - 5.5 GHz
» Intel Core Ultra 7 265K
   20x 3.3 GHz - 5.5 GHz
» Intel Core Ultra 7 265HX
   20x 2.3 GHz - 5.3 GHz
» Intel Core Ultra 7 255HX
   20x 2.3 GHz - 5.2 GHz
» Intel Core Ultra 5 245KF
   14x 3.6 GHz - 5.2 GHz
» Intel Core Ultra 5 245K
   14x 3.6 GHz - 5.2 GHz
» Intel Core Ultra 5 245
   14x 3 GHz - 5.1 GHz
» Intel Core Ultra 5 235
   14x 3.4 GHz - 5 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 5 225
   10x 3.3 GHz - 4.9 GHz
» Intel Core Ultra 5 235H
   14x 4.4 GHz - 5.1 GHz
» Intel Core Ultra 5 225H
   14x 4.3 GHz - 4.9 GHz
» Intel Core Ultra 7 265U
   12x 2.4 GHz - 5.3 GHz
» Intel Core Ultra 7 255U
   12x 3.8 GHz - 4.8 GHz
» Intel Core Ultra 5 235U
   12x 2.4 GHz - 4.9 GHz
» Intel Core Ultra 5 225U
   12x 2.4 GHz - 4.8 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)