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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.

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)
Architecturex86x86
Announced
Manufacturerwww.intel.comwww.intel.com

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - Ultra 9 275HX
48.7 pt (81%)
Restrict / Search: Model: Max. age: years
Cinebench 2024 - Cinebench 2024 CPU Single Core
min: 130.5     avg: 134.8     median: 135.7 (76%)     max: 138 Points
Cinebench 2024 - Cinebench 2024 CPU Multi Core
min: 1913     avg: 2109     median: 2128 (40%)     max: 2223 Points
Cinebench R23 - Cinebench R23 Multi Core
min: 33449     avg: 36041     median: 36383 (34%)     max: 39001 Points
Cinebench R23 - Cinebench R23 Single Core
min: 2126     avg: 2187     median: 2193.5 (93%)     max: 2252 Points
Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 811     avg: 843     median: 848.5 (94%)     max: 866 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 13178     avg: 14190     median: 14245 (35%)     max: 15517 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 5044     avg: 5650     median: 5712.5 (36%)     max: 6060 Points
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 317     avg: 334.3     median: 335.5 (94%)     max: 343 Points
7-Zip 18.03 - 7-Zip 18.03 Multi Thread 4 runs
min: 104686     avg: 115603     median: 117732 (68%)     max: 122818 MIPS
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 6186     avg: 6755     median: 6745.5 (80%)     max: 7039 MIPS
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 35     avg: 38.4     median: 39.2 (69%)     max: 41.2 fps
Blender - Blender 3.3 Classroom CPU *
min: 135     avg: 147.3     median: 147.5 (2%)     max: 162 Seconds
Blender - Blender 2.79 BMW27 CPU *
min: 86     avg: 92.3     median: 91 (1%)     max: 102 Seconds
R Benchmark 2.5 - R Benchmark 2.5 *
min: 0.3943     avg: 0.4     median: 0.4 (9%)     max: 0.4568 sec
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
123908 Points (95%)
3DMark 11 - 3DM11 Performance Physics
min: 23558     avg: 26357     median: 26363 (66%)     max: 29050 Points
3DMark - 3DMark Ice Storm Physics
104288 Points (85%)
3DMark - 3DMark Cloud Gate Physics
min: 25886     avg: 26202     median: 26201.5 (66%)     max: 26517 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 40427     avg: 45883     median: 47055 (84%)     max: 48283 Points
3DMark - 3DMark Time Spy CPU
min: 15473     avg: 16581     median: 16678 (70%)     max: 17607 Points
Geekbench 6.4 - Geekbench 6.4 Single-Core
min: 2917     avg: 3049     median: 3046 (76%)     max: 3158 Points
2917 Points (73%)
Geekbench 6.4 - Geekbench 6.4 Multi-Core
min: 16033     avg: 19406     median: 19464 (76%)     max: 21668 Points
16396 Points (64%)
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Single-Core
min: 2034     avg: 2199     median: 2206.5 (86%)     max: 2292 Points
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Multi-Core
min: 21195     avg: 23241     median: 23051 (41%)     max: 25855 Points
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 405     avg: 411.3     median: 410 (0%)     max: 420 ms
Octane V2 - Octane V2 Total Score
min: 124210     avg: 127527     median: 127878 (98%)     max: 130140 Points
WebXPRT 4 - WebXPRT 4 Score
min: 317     avg: 333.1     median: 335 (92%)     max: 341 Points
WebXPRT 3 - WebXPRT 3 Score
min: 315     avg: 347     median: 346.5 (62%)     max: 360 Points
CrossMark - CrossMark Overall
min: 1995     avg: 2159     median: 2179 (81%)     max: 2282 Points
Power Consumption - Prime95 Power Consumption - external Monitor *
min: 130.4     avg: 207.8     median: 225.5 (39%)     max: 249 Watt
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
min: 153.1     avg: 221.8     median: 241 (44%)     max: 255 Watt
Power Consumption - Idle Power Consumption - external Monitor *
min: 10.3     avg: 31.8     median: 33.7 (22%)     max: 46.3 Watt
Power Consumption - Idle Power Consumption 150cd 1min *
min: 10.1     avg: 23.3     median: 26.2 (29%)     max: 36.9 Watt
Power Consumption - Power Efficiency - Cinebench R15 Multi external Monitor
min: 22.8     avg: 26.4     median: 24 (18%)     max: 33.8 Points per Watt

Average Benchmarks Intel Core Ultra 9 275HX → 100% n=2

Average Benchmarks Intel Core Ultra 7 255HX → 90% n=2

- 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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v1.33
log 10. 18:27:55

#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 Sat, 10 May 2025 11:09:09 +0200 +0s ... 0s

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

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

#7 getting avg benchmarks for device 18886 +0.003s ... 0.007s

#8 got single benchmarks 18886 +0.012s ... 0.019s

#9 getting avg benchmarks for device 18892 +0.001s ... 0.02s

#10 got single benchmarks 18892 +0.003s ... 0.022s

#11 got avg benchmarks for devices +0s ... 0.022s

#12 min, max, avg, median took s +0.017s ... 0.039s

#13 return log +0.002s ... 0.042s

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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)