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Intel Core Ultra 9 275HX vs Intel Core Ultra 7 255HX

Intel Core Ultra 9 275HX

► remove from comparison Intel Ultra 9 275HX

The Intel Core Ultra 9 275HX is a mobile high-end CPU for gaming notebooks based on the Arrow Lake architecture. It offers 24 cores consisting of 8 fast performance cores with up to 5.4 GHz and 16 smaller efficiency cores with up to 4.6 GHz clock speed. The CPU has access to 40 MB L2 cache and 36 MB L3 cache and is specified with a TDP of 55 watts.

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 DDR5-6400 (dual channel, ECC optional). The integrated GPU (iGPU) is a small Intel Graphics graphics card with four Xe cores running at 300 - 1900 MHz.

Performance - High End

The performance of the Ultra 9 275HX is only slightly behind the top model, the Core Ultra 9 285HX, due to the 100 MHz lower boost clock of the P-cores Core Ultra 9 285HX and therefore also remains below the similar Desktop Core Ultra 9 285K (higher clocked with up to 5.7 GHz and more TDP with 125 watts). Due to the improved IPC of the cores (especially the efficiency cores), the CPU should perform just behind or at the level of the Raptor Lake Core i9-14900HX (8 + 16 cores, max 5.8 / 4.1 GHz). This makes the CPU ideal for very demanding tasks such as high-end gaming and content creation.

Production - TSMC and Foveros

The Arrow Lake-HX chips are based on the desktop Arrow Lake-S chips and are composed of several chiplets. The CPU part is manufactured at TSMC in the modern N3B (3nm) process, the GPU also comes from TSMC in the N5P process. The SoC and I/O tile are manufactured in the TSMC N6 process. The base tile is manufactured by Intel in the 22nm process and carries the individual chiplets thanks to Fovero's 3D packaging.

Intel Core Ultra 7 255HX

► remove from comparison Intel Ultra 7 255HX

The Intel Core Ultra 7 255HX is a mobile high-end CPU for gaming notebooks based on the Arrow Lake architecture. It offers 20 cores consisting of 8 fast performance cores with up to 5.2 GHz and 12 of the 16 smaller efficiency cores with up to 4.5 GHz clock speed. The CPU has access to 30 MB L2 cache and 36 MB L3 cache and is specified with a TDP of 55 watts.

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 DDR5-6400 (dual channel, ECC optional). The integrated GPU (iGPU) is a small Intel Graphics graphics card with four Xe cores running at 300 - 1850 MHz.

Performance - High End

Thanks to the improved IPC of the cores (especially the efficiency cores), the CPU should perform just behind or at the level of the Raptor Lake Core i9-14700HX (8 + 12 cores, max 5.5 / 3.9 GHz). This makes the CPU ideal for demanding tasks such as high-end gaming and content creation.

Production - TSMC and Foveros

The Arrow Lake-HX chips are based on the desktop Arrow Lake-S chips and are composed of several chiplets. The CPU part is manufactured at TSMC in the modern N3B (3nm) process, the GPU also comes from TSMC in the N5P process. The SoC and I/O tile are manufactured in the TSMC N6 process. The base tile is manufactured by Intel in the 22nm process and carries the individual chiplets thanks to Fovero's 3D packaging.

show full text
ModelIntel Core Ultra 9 275HXIntel Core Ultra 7 255HX
CodenameArrow Lake-HXArrow Lake-HX
SeriesIntel Arrow LakeIntel Arrow Lake
Series: Arrow Lake Arrow Lake-HX
Intel Core Ultra 9 285HX compare2.1 - 5.5 GHz24 / 24 cores36 MB L3
Intel Core Ultra 9 275HX « 2.1 - 5.4 GHz24 / 24 cores36 MB L3
Intel Core Ultra 7 265HX compare2.3 - 5.3 GHz20 / 20 cores36 MB L3
Intel Core Ultra 7 255HX2.3 - 5.2 GHz20 / 20 cores36 MB L3
Intel Core Ultra 5 245HX compare2.6 - 5.1 GHz14 / 14 cores26 MB L3
Intel Core Ultra 5 235HX compare2.6 - 5.1 GHz14 / 14 cores26 MB L3
Intel Core Ultra 9 285HX compare2.1 - 5.5 GHz24 / 24 cores36 MB L3
Intel Core Ultra 9 275HX2.1 - 5.4 GHz24 / 24 cores36 MB L3
Intel Core Ultra 7 265HX compare2.3 - 5.3 GHz20 / 20 cores36 MB L3
Intel Core Ultra 7 255HX « 2.3 - 5.2 GHz20 / 20 cores36 MB L3
Intel Core Ultra 5 245HX compare2.6 - 5.1 GHz14 / 14 cores26 MB L3
Intel Core Ultra 5 235HX compare2.6 - 5.1 GHz14 / 14 cores26 MB L3
Clock2100 - 5400 MHz2300 - 5200 MHz
L2 Cache40 MB30 MB
L3 Cache36 MB36 MB
Cores / Threads24 / 24
8 x 5.4 GHz Intel Lion Cove P-core
16 x 4.6 GHz Intel Skymont E-core		20 / 20
8 x 5.2 GHz Intel Lion Cove P-core
12 x 4.5 GHz Intel Skymont E-core
TDP55 Watt55 Watt
TDP Turbo PL2160 Watt160 Watt
Technology3 nm3 nm
iGPUIntel Graphics 4-Core iGPU (Arc) (300 - 1900 MHz)Intel Graphics 4-Core iGPU (Arc) (300 - 1850 MHz)
NPU / AI13 TOPS INT813 TOPS INT8
Architecturex86x86
Announced
Manufacturerwww.intel.comwww.intel.com

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - Ultra 9 275HX
48.4 pt (81%)
AMD E1-2100
2.32 -95%
...
Intel Core i9-13950HX
45.1 -7%
AMD Ryzen AI Max+ PRO 395
45.4 -6%
Intel Core i9-13980HX
46 -5%
AMD Ryzen 9 8940HX
46.2 -5%
Intel Core i9-14900HX
46.6 -4%
Intel Core Ultra 7 255HX
46.6 -4%
AMD Ryzen 9 7945HX
46.8 -3%
AMD Ryzen AI Max+ 395
46.9 -3%
AMD Ryzen 9 7945HX3D
47.4 -2%
Intel Core Ultra 9 275HX
48.4
Intel Core Ultra 9 285HX
49.1 1%
AMD Ryzen 9 9955HX3D
49.5 2%
AMD Ryzen 9 9955HX
50.1 4%
max:
AMD Ryzen Threadripper PRO 7995WX
60.1 24%
0%
100%
Restrict / Search: Model: Max. age: years
Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - Ultra 7 255HX
46.6 pt (78%)
AMD E1-2100
2.32 -95%
...
AMD Ryzen AI Max PRO 390
43.4 -7%
AMD Ryzen 9 7845HX
44.1 -5%
Intel Core i7-14700HX
44.3 -5%
Intel Core i9-13900HX
45 -3%
Intel Core i9-13950HX
45.1 -3%
AMD Ryzen AI Max+ PRO 395
45.4 -3%
Intel Core i9-13980HX
46 -1%
AMD Ryzen 9 8940HX
46.2 -1%
Intel Core i9-14900HX
46.6 0%
Intel Core Ultra 7 255HX
46.6
AMD Ryzen 9 7945HX
46.8 0%
AMD Ryzen AI Max+ 395
46.9 1%
AMD Ryzen 9 7945HX3D
47.4 2%
Intel Core Ultra 9 275HX
48.4 4%
Intel Core Ultra 9 285HX
49.1 5%
AMD Ryzen 9 9955HX3D
49.5 6%
AMD Ryzen 9 9955HX
50.1 8%
max:
AMD Ryzen Threadripper PRO 7995WX
60.1 29%
0%
100%
Restrict / Search: Model: Max. age: years
Cinebench 2024 - Cinebench 2024 CPU Single Core
min: 123.1     avg: 133.5     median: 133.8 (75%)     max: 138.2 Points
min: 124     avg: 128.2     median: 129 (72%)     max: 131.6 Points
Cinebench 2024 - Cinebench 2024 CPU Multi Core
min: 1547     avg: 2024     median: 2057 (38%)     max: 2288 Points
min: 1500     avg: 1634     median: 1685 (31%)     max: 1716 Points
Cinebench R23 - Cinebench R23 Multi Core
min: 30712     avg: 35874     median: 35959 (33%)     max: 40970 Points
min: 27129     avg: 30513     median: 31798 (30%)     max: 32612 Points
Cinebench R23 - Cinebench R23 Single Core
min: 2009     avg: 2189     median: 2193.5 (92%)     max: 2267 Points
min: 2111     avg: 2146     median: 2160 (91%)     max: 2167 Points
Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 774     avg: 842     median: 846 (92%)     max: 870 Points
min: 822     avg: 830     median: 832 (91%)     max: 835 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 12026     avg: 14054     median: 14183 (35%)     max: 16108 Points
min: 10626     avg: 11927     median: 12316 (30%)     max: 12839 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 4756     avg: 5597     median: 5679 (36%)     max: 6271 Points
min: 4114     avg: 4609     median: 4796 (30%)     max: 4916 Points
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 306     avg: 330.3     median: 332.5 (92%)     max: 343 Points
min: 322     avg: 325.3     median: 327 (91%)     max: 327 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
50.3 Points (65%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
4 Points (94%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
11779 Points (71%)
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
81019 Points (59%)
WinRAR - WinRAR 4.0
10319 Points (16%)
7-Zip 18.03 - 7-Zip 18.03 Multi Thread 4 runs
min: 98236     avg: 113464     median: 112452 (65%)     max: 124155 MIPS
min: 87806     avg: 94740     median: 97739 (56%)     max: 98675 MIPS
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 6026     avg: 6662     median: 6659 (78%)     max: 7149 MIPS
min: 6407     avg: 6454     median: 6439 (76%)     max: 6515 MIPS
X264 HD Benchmark 4.0 - x264 Pass 2
215.6 fps (5%)
X264 HD Benchmark 4.0 - x264 Pass 1
385.3 fps (10%)
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 30.7     avg: 38.1     median: 38.9 (68%)     max: 43.8 fps
min: 30.4     avg: 33     median: 33.6 (59%)     max: 35 fps
TrueCrypt - TrueCrypt Serpent
1.8 GB/s (53%)
TrueCrypt - TrueCrypt Twofish
3.6 GB/s (62%)
TrueCrypt - TrueCrypt AES
10.8 GB/s (28%)
Blender - Blender 3.3 Classroom CPU *
min: 134     avg: 154.1     median: 149 (2%)     max: 190 Seconds
min: 171     avg: 183.3     median: 181 (2%)     max: 198 Seconds
Blender - Blender 2.79 BMW27 CPU *
min: 82     avg: 95.1     median: 92.5 (1%)     max: 116 Seconds
min: 106     avg: 112.7     median: 110 (1%)     max: 122 Seconds
R Benchmark 2.5 - R Benchmark 2.5 *
min: 0.3943     avg: 0.4     median: 0.4 (9%)     max: 0.4568 sec
min: 0.421     avg: 0.4     median: 0.4 (9%)     max: 0.4287 sec
3DMark 06 - CPU - 3DMark 06 - CPU
20771 Points (44%)
17993 Points (38%)
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
7.3 s (2%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
16 s (1%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
375 s (2%)
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 118679     avg: 121294     median: 121294 (93%)     max: 123908 Points
3DMark 11 - 3DM11 Performance Physics
min: 21109     avg: 26555     median: 26691 (66%)     max: 29050 Points
min: 22207     avg: 24381     median: 24386 (60%)     max: 26551 Points
3DMark - 3DMark Ice Storm Physics
min: 104288     avg: 107450     median: 108134 (88%)     max: 109928 Points
3DMark - 3DMark Ice Storm Extreme Physics
109836 Points (89%)
3DMark - 3DMark Ice Storm Unlimited Physics
114084 Points (92%)
3DMark - 3DMark Cloud Gate Physics
min: 22080     avg: 26097     median: 25891 (65%)     max: 29274 Points
min: 21049     avg: 24189     median: 25249 (64%)     max: 26269 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 37357     avg: 46886     median: 47850 (85%)     max: 53870 Points
min: 36734     avg: 40209     median: 39827 (71%)     max: 44067 Points
3DMark - 3DMark Time Spy CPU
min: 13789     avg: 16154     median: 16317.5 (69%)     max: 17607 Points
min: 14763     avg: 15637     median: 15628 (66%)     max: 16520 Points
Geekbench 6.5 - Geekbench 6.5 Single-Core
min: 2843     avg: 3027     median: 3052 (74%)     max: 3160 Points
min: 2917     avg: 2940     median: 2929 (71%)     max: 2985 Points
Geekbench 6.5 - Geekbench 6.5 Multi-Core
min: 16033     avg: 19349     median: 19299 (75%)     max: 21668 Points
min: 16396     avg: 17337     median: 17158 (67%)     max: 18635 Points
Geekbench 6.0 - Geekbench 6.0 Single-Core
2691 Points (85%)
Geekbench 6.0 - Geekbench 6.0 Multi-Core
17227 Points (71%)
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Single-Core
min: 2033     avg: 2196     median: 2216.5 (84%)     max: 2292 Points
min: 2112     avg: 2160     median: 2182 (83%)     max: 2185 Points
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Multi-Core
min: 19105     avg: 22806     median: 22600.5 (40%)     max: 25855 Points
min: 18263     avg: 19459     median: 19099 (34%)     max: 21014 Points
Geekbench 5.0 - Geekbench 5.0 64 Bit Single-Core
2058 Points (9%)
Geekbench 5.0 - Geekbench 5.0 64 Bit Multi-Core
21162 Points (67%)
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
8615 Points (86%)
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
80186 Points (79%)
Geekbench 4.0 - Geekbench 4.0 64 Bit Single-Core
9053 Points (100%)
Geekbench 4.0 - Geekbench 4.0 64 Bit Multi-Core
69317 Points (91%)
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 402     avg: 414.6     median: 411.5 (0%)     max: 432 ms
min: 425     avg: 428.7     median: 425 (0%)     max: 436 ms
Octane V2 - Octane V2 Total Score
min: 123370     avg: 127054     median: 127124 (93%)     max: 130140 Points
WebXPRT 4 - WebXPRT 4 Score
min: 285     avg: 327.6     median: 333 (91%)     max: 341 Points
min: 305     avg: 309.3     median: 306 (84%)     max: 317 Points
WebXPRT 3 - WebXPRT 3 Score
min: 306     avg: 351.7     median: 346.5 (62%)     max: 532 Points
min: 319     avg: 329.3     median: 325 (58%)     max: 344 Points
CrossMark - CrossMark Overall
min: 1857     avg: 2162     median: 2184.5 (82%)     max: 2339 Points
min: 1944     avg: 2033     median: 2059 (77%)     max: 2097 Points
Power Consumption - Prime95 Power Consumption - external Monitor *
min: 93.9     avg: 195.1     median: 202.5 (35%)     max: 270 Watt
min: 156.1     avg: 172.9     median: 166.8 (29%)     max: 195.7 Watt
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
min: 153.1     avg: 224     median: 230.5 (42%)     max: 259 Watt
174.2 Watt (32%)
Power Consumption - Idle Power Consumption - external Monitor *
min: 10.3     avg: 29.2     median: 27.1 (18%)     max: 55.3 Watt
min: 9.33     avg: 22.3     median: 25.2 (17%)     max: 32.4 Watt
Power Consumption - Idle Power Consumption 150cd 1min *
min: 10.1     avg: 21.8     median: 20.5 (25%)     max: 38.4 Watt
min: 10.1     avg: 15.8     median: 16.5 (20%)     max: 20.7 Watt
Power Consumption - Power Efficiency - Cinebench R15 Multi external Monitor
min: 20.4     avg: 25.8     median: 24.2 (18%)     max: 33.8 Points per Watt

Average Benchmarks Intel Core Ultra 9 275HX → 100% n=27

Average Benchmarks Intel Core Ultra 7 255HX → 91% n=27

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

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v1.34
log 01. 20:40:11

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

#1 checking url part for id 18886 +0s ... 0s

#2 checking url part for id 18892 +0s ... 0s

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

#4 did not recreate cache, as it is less than 5 days old! Created at Wed, 01 Oct 2025 05:17:55 +0200 +0s ... 0s

#5 composed specs +0.004s ... 0.004s

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

#7 getting avg benchmarks for device 18886 +0.004s ... 0.008s

#8 got single benchmarks 18886 +0.035s ... 0.043s

#9 getting avg benchmarks for device 18892 +0.003s ... 0.047s

#10 got single benchmarks 18892 +0.007s ... 0.054s

#11 got avg benchmarks for devices +0s ... 0.054s

#12 min, max, avg, median took s +0.05s ... 0.104s

#13 return log +0.003s ... 0.108s

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2023-07- 1)