Notebookcheck Logo

Intel Core i7-11800H vs Intel Core i7-1255U

Intel Core i7-11800H

► remove from comparison Intel i7-11800H

The Intel Core i7-11800H is a high-end octa-core SoC for gaming laptops and mobile workstations. It is belongs to the Tiger Lake H45 family and was announced in mid 2021. It integrates eight Willow Cove processor cores (16 threads thanks to Hyper-Threading). The base clock speed depends on the TDP setting and is 2.3 GHz at 45 W. The single core Boost can be as high as 4.6 GHz while all cores can run at up to 4.2 GHz. The CPU offers 24 MB of Level 3 cache and supports DDR4-3200 memory.

The SoC also has the improved UHD Graphics iGPU with 32 EUs which is similar to the Iris Xe iGPUs.

Furthermore, Tiger Lake SoCs add PCIe 4 support (20 lanes in the H45 series), AI hardware acceleration, and the partial integration of Thunderbolt 4/USB 4 and Wi-Fi 6E in the chip.

All articles on Tiger Lake can be found in our Tiger Lake architecture hub.

Performance

The average 11800H in our database is a powerhouse, as of mid 2022. Its multi-thread performance is most comparable to that of the octa-core AMD Ryzen 7 5800H.

Thanks to its decent cooling solution and a long-term CPU power limit of 165 W, the Alienware x17 R1 is among the fastest laptops powered by the 11800H that we know of. It can be almost 50% faster in CPU-bound workloads than the slowest system featuring the same chip in our database, as of August 2023.

Power consumption

This Core i7 series chip has a default TDP, also known as the long-term power limit, of 45 W that laptop makers are allowed to reduce slightly, 35 W being the lowest Intel-recommended value. Doing so will result in lower clock speeds and lower performance. Either way, a proper cooling solution is a must for a CPU like this.

The Core i7-11800H is built with Intel's third-gen 10 nm process marketed as SuperFin for average, as of early 2023, energy efficiency.

Intel Core i7-1255U

► remove from comparison Intel i7-1255U

The Intel Core i7-1255U is a high-end mobile CPU for thin and light laptops based on the Alder Lake architecture. It was announced in early 2022 and offers 2  performance cores (P-cores, Golden Cove architecture) and 8 efficient cores (E-cores, Gracemont architecture). The P-cores support Hyper-Threading leading to 12 supported threads when combined with the E-cores. The clock rate ranges from 1.7 to 4.7 GHz on the performance cluster and 1.2 to 3.5 GHz on the efficient cluster. The performance of the E-cores should be similar to old Skylake cores (compare to the Core i7-6700HQ). All cores can use up to 12 MB L3 cache. Compared to the i7-1265U (fastest U-series CPU at launch), the 1255 offers 100 MHz lower clocked CPU cores and only "Essentials" vPro management features. Compared to the P-series (28W) or H-series (45W), the 15W TDP may limit the sustained performance.

Performance

The average 1255U in our database is in the same league as the Ryzen 5 5600U, as far as multi-thread benchmark scores are concerned. Which is nothing to be ashamed of, as of mid 2023.

Thanks to its decent cooling solution and a long-term CPU power limit of 28 W, the Spectre x360 13.5 14t-ef000 is among the fastest laptops built around the 1255U that we know of. It can be 20% faster in CPU-bound workloads than the slowest system featuring the same chip in our database, as of August 2023.

Architecture

The integrated memory controller supports various memory types up to DDR5-4800, DDR4-3200, LPDDR5-5200, and LPDDR4x-4267. The Thread Director (in hardware) can support the operating system to decide which thread to use on the performance or efficient cores for the best performance. For AI tasks, the CPU also integrates GNA 3.0 and DL Boost (via AVX2). Quick Sync in version 8 is the same as in the Rocket Lake CPUs and supports MPEG-2, AVC, VC-1 decode, JPEG, VP8 decode, VP9, HEVC, and AV1 decode in hardware. The CPU only supports PCIe 4.0 (x8 for a GPU and two x4 for SSDs).

The integrated graphics card is based on the Xe-architecture and offers all 96 EUs (Execution Units) operating at up to 1.25 GHz.

Power consumption

This Core i7 has a "minimum assured" power consumption of 12 W. Its Base power consumption sits at 15 W and its maximum Intel-recommended Turbo power consumption isn't supposed to exceed 55 W. All those values are too high to allow for pasisvely cooled designs.

Last but not the least, Core i7-1255U is built with Intel's fourth-gen 10 nm process marketed as Intel 7 for decent, as of late 2022, energy efficiency.

ModelIntel Core i7-11800HIntel Core i7-1255U
CodenameTiger Lake-HAlder Lake-U
SeriesIntel Tiger LakeIntel Alder Lake-M
Series: Alder Lake-M Alder Lake-U
Intel Core i9-11900KB compare3.3 - 5.3 GHz8 / 16 cores24 MB L3
Intel Core i9-11900H compare2.5 - 4.9 GHz8 / 16 cores24 MB L3
Intel Core i9-11950H compare2.6 - 5 GHz8 / 16 cores24 MB L3
Intel Xeon W-11955M compare2.6 - 5 GHz8 / 16 cores24 MB L3
Intel Core i7-11850H compare2.5 - 4.8 GHz8 / 16 cores24 MB L3
Intel Core i7-11800H « 2.3 - 4.6 GHz8 / 16 cores24 MB L3
Intel Xeon W-11855M compare3.2 - 4.9 GHz6 / 12 cores18 MB L3
Intel Core i5-11500B compare3.3 - 4.6 GHz6 / 12 cores12 MB L3
Intel Core i5-11400H compare2.7 - 4.5 GHz6 / 12 cores12 MB L3
Intel Core i5-11260H compare2.6 - 4.4 GHz6 / 12 cores12 MB L3
Intel Core i7-1265U compare1.3 - 4.8 GHz10 / 12 cores12 MB L3
Intel Core i7-1255U « 1.2 - 4.7 GHz10 / 12 cores12 MB L3
Intel Core i5-1245U compare1.2 - 4.4 GHz10 / 12 cores12 MB L3
Intel Core i5-1235U compare0.9 - 4.4 GHz10 / 12 cores12 MB L3
Intel Core i7-1260U compare0.8 - 4.7 GHz10 / 12 cores12 MB L3
Intel Core i7-1250U compare0.8 - 4.7 GHz10 / 12 cores12 MB L3
Intel Core i5-1240U compare0.8 - 4.4 GHz10 / 12 cores12 MB L3
Intel Core i5-1230U compare0.7 - 4.4 GHz10 / 12 cores12 MB L3
Intel Core i3-1215U compare0.9 - 4.4 GHz6 / 8 cores10 MB L3
Intel Pentium 8505 compare0.9 - 4.4 GHz5 / 6 cores8 MB L3
Intel Core i3-1210U compare0.7 - 4.4 GHz6 / 8 cores10 MB L3
Intel Pentium 8500 compare0.7 - 4.4 GHz5 / 6 cores8 MB L3
Intel Celeron 7305 compare0.9 - 1.1 GHz5 / 5 cores8 MB L3
Intel Celeron 7300 compare0.7 - 1 GHz5 / 5 cores8 MB L3
Clock2300 - 4600 MHz1200 - 4700 MHz
L1 Cache640 KB928 KB
L2 Cache10 MB9.5 MB
L3 Cache24 MB12 MB
Cores / Threads8 / 1610 / 12
TDP45 Watt15 Watt
Technology10 nm10 nm
max. Temp.100 °C100 °C
SocketBGA1787BGA1744
FeaturesDDR4-3200 RAM, PCIe 4, 8 GT/s, DL Boost, GNA, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, VMX, SMEP, SMAP, EIST, TM1, TM2, Hyper-Threading, Turbo, SST, AES-NI, RDRAND, RDSEED, SHADDR4-3200/LPDDR4x-4266/DDR5-4800/LPDDR5-5200 RAM, PCIe 4, Thr. Dir., DL Boost, GNA, vPro Ess., MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, EIST, TM1, TM2, HT, Turbo, SST, AES-NI, RDRAND, RDSEED, SHA
iGPUIntel UHD Graphics Xe 32EUs (Tiger Lake-H) (350 - 1450 MHz)Intel Iris Xe Graphics G7 96EUs ( - 1250 MHz)
Architecturex86x86
Announced
Manufacturerark.intel.comark.intel.com

Benchmarks

Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - i7-11800H
35 pt (58%)
Restrict / Search: Model: Max. age: years
Performance Rating - CB R15 + R20 + 7-Zip + X265 + Blender + 3DM11 CPU - i7-1255U
34.7 pt (58%)
Restrict / Search: Model: Max. age: years
Cinebench 2024 - Cinebench 2024 CPU Single Core
min: 88     avg: 89     median: 89 (50%)     max: 90 Points
98.7 Points (55%)
Cinebench 2024 - Cinebench 2024 CPU Multi Core
min: 519     avg: 582     median: 582 (11%)     max: 645 Points
388 Points (7%)
Cinebench R23 - Cinebench R23 Multi Core
min: 6508     avg: 11662     median: 12197 (11%)     max: 14088 Points
min: 5269     avg: 7970     median: 8285 (8%)     max: 9628 Points
Cinebench R23 - Cinebench R23 Single Core
min: 1386     avg: 1499     median: 1508 (63%)     max: 1522 Points
min: 1408     avg: 1627     median: 1647 (69%)     max: 1775 Points
Cinebench R20 - Cinebench R20 CPU (Single Core)
min: 533     avg: 577     median: 580 (63%)     max: 586 Points
min: 550     avg: 634     median: 638 (69%)     max: 682 Points
Cinebench R20 - Cinebench R20 CPU (Multi Core)
min: 2498     avg: 4465     median: 4689 (11%)     max: 5408 Points
min: 2095     avg: 3037     median: 2987 (7%)     max: 3702 Points
Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 1342     avg: 1894     median: 1936 (12%)     max: 2173 Points
min: 919     avg: 1335     median: 1387 (9%)     max: 1577 Points
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 201     avg: 225.9     median: 227 (63%)     max: 231 Points
min: 161     avg: 230     median: 237.5 (66%)     max: 251 Points
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 15.96     avg: 18.7     median: 18.5 (24%)     max: 21.87 Points
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 2.45     avg: 2.6     median: 2.6 (62%)     max: 2.62 Points
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 8796     avg: 9017     median: 9075 (55%)     max: 9179 Points
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 43860     avg: 46966     median: 44099 (32%)     max: 52939 Points
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
min: 49232     avg: 58329     median: 58299.5 (37%)     max: 67486 Points
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
min: 10903     avg: 11582     median: 11734 (14%)     max: 11957 Points
wPrime 2.10 - wPrime 2.0 1024m *
min: 98.307     avg: 113.4     median: 120.8 (1%)     max: 121.132 s
wPrime 2.10 - wPrime 2.0 32m *
min: 3.405     avg: 3.9     median: 4 (1%)     max: 4.186 s
WinRAR - WinRAR 4.0
min: 7925     avg: 8146     median: 7944 (13%)     max: 8569 Points
7-Zip 18.03 - 7-Zip 18.03 Multi Thread 4 runs
min: 33718     avg: 48465     median: 49080 (28%)     max: 56758 MIPS
min: 24126     avg: 33263     median: 36557 (21%)     max: 37365 MIPS
7-Zip 18.03 - 7-Zip 18.03 Single Thread 4 runs
min: 5138     avg: 5494     median: 5509 (65%)     max: 5732 MIPS
min: 5059     avg: 5303     median: 5256 (62%)     max: 5529 MIPS
X264 HD Benchmark 4.0 - x264 Pass 2
min: 86.25     avg: 96.4     median: 93.8 (2%)     max: 109.3 fps
X264 HD Benchmark 4.0 - x264 Pass 1
min: 242     avg: 249.2     median: 247.5 (6%)     max: 258 fps
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
min: 7.38     avg: 13.8     median: 13.9 (24%)     max: 17.4 fps
min: 6.31     avg: 9     median: 9.6 (17%)     max: 10.1 fps
TrueCrypt - TrueCrypt Serpent
min: 0.9     avg: 1     median: 1 (29%)     max: 1.1 GB/s
TrueCrypt - TrueCrypt Twofish
min: 1.5     avg: 1.6     median: 1.5 (26%)     max: 1.7 GB/s
TrueCrypt - TrueCrypt AES
min: 9.7     avg: 10.4     median: 9.9 (26%)     max: 11.6 GB/s
Blender - Blender 3.3 Classroom CPU *
min: 414     avg: 526     median: 512 (7%)     max: 698 Seconds
min: 683     avg: 792     median: 728 (9%)     max: 1156 Seconds
Blender - Blender 2.79 BMW27 CPU *
min: 217     avg: 276.2     median: 261 (2%)     max: 454 Seconds
min: 372     avg: 428.7     median: 408 (3%)     max: 601 Seconds
R Benchmark 2.5 - R Benchmark 2.5 *
min: 0.548     avg: 0.6     median: 0.6 (12%)     max: 0.615 sec
min: 0.4688     avg: 0.5     median: 0.5 (11%)     max: 0.558 sec
3DMark 06 - CPU - 3DMark 06 - CPU
min: 11185     avg: 13064     median: 13362 (28%)     max: 13773 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 7.249     avg: 7.3     median: 7.3 (2%)     max: 7.312 s
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 15.717     avg: 15.8     median: 15.8 (1%)     max: 15.844 s
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 367.662     avg: 369.9     median: 369.8 (2%)     max: 372.381 s
3DMark Vantage - 3DM Vant. Perf. CPU no Physx
min: 45864     avg: 58890     median: 59698 (46%)     max: 65610 Points
3DMark 11 - 3DM11 Performance Physics
min: 10590     avg: 16383     median: 16736 (41%)     max: 19167 Points
min: 8097     avg: 13705     median: 14505 (36%)     max: 16890 Points
3DMark - 3DMark Ice Storm Physics
min: 70480     avg: 79959     median: 79626.5 (65%)     max: 87054 Points
62348 Points (51%)
3DMark - 3DMark Ice Storm Extreme Physics
min: 70605     avg: 73865     median: 72703 (59%)     max: 78286 Points
3DMark - 3DMark Ice Storm Unlimited Physics
min: 73413     avg: 77851     median: 76950.5 (62%)     max: 86257 Points
3DMark - 3DMark Cloud Gate Physics
min: 10266     avg: 15268     median: 15595 (39%)     max: 17488 Points
min: 7134     avg: 9823     median: 10079 (25%)     max: 12522 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 12843     avg: 22347     median: 22927 (41%)     max: 25145 Points
min: 11482     avg: 16766     median: 17512 (31%)     max: 20193 Points
3DMark - 3DMark Time Spy CPU
min: 5086     avg: 9115     median: 9307.5 (39%)     max: 11076 Points
min: 1124     avg: 5246     median: 5994 (25%)     max: 7649 Points
Geekbench 6.5 - Geekbench 6.5 Single-Core
min: 2165     avg: 2193     median: 2192.5 (53%)     max: 2220 Points
min: 2313     avg: 2319     median: 2319 (56%)     max: 2325 Points
Geekbench 6.5 - Geekbench 6.5 Multi-Core
min: 8860     avg: 9254     median: 9253.5 (36%)     max: 9647 Points
min: 7914     avg: 8273     median: 8273 (32%)     max: 8632 Points
Geekbench 6.0 - Geekbench 6.0 Single-Core
min: 2058     avg: 2070     median: 2070 (66%)     max: 2082 Points
min: 1760     avg: 1994     median: 1993.5 (63%)     max: 2227 Points
Geekbench 6.0 - Geekbench 6.0 Multi-Core
min: 8597     avg: 8934     median: 8933.5 (37%)     max: 9270 Points
min: 4534     avg: 6663     median: 6662.5 (27%)     max: 8791 Points
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Single-Core
min: 1429     avg: 1562     median: 1572 (60%)     max: 1625 Points
min: 1560     avg: 1645     median: 1661.5 (63%)     max: 1712 Points
Geekbench 5.5 - Geekbench 5.1 - 5.5 64 Bit Multi-Core
min: 4655     avg: 8543     median: 8905 (16%)     max: 9851 Points
min: 4463     avg: 7335     median: 7947.5 (14%)     max: 8821 Points
Geekbench 5.0 - Geekbench 5.0 64 Bit Single-Core
min: 1436     avg: 1533     median: 1550 (7%)     max: 1571 Points
min: 1523     avg: 1608     median: 1612 (7%)     max: 1684 Points
Geekbench 5.0 - Geekbench 5.0 64 Bit Multi-Core
min: 6340     avg: 7831     median: 7866 (25%)     max: 9103 Points
min: 4557     avg: 6901     median: 6905 (22%)     max: 8452 Points
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Single-Core
min: 6104     avg: 6593     median: 6667 (67%)     max: 6747 Points
Geekbench 4.4 - Geekbench 4.1 - 4.4 64 Bit Multi-Core
min: 27454     avg: 33439     median: 34107 (33%)     max: 36706 Points
Mozilla Kraken 1.1 - Kraken 1.1 Total Score *
min: 600     avg: 641     median: 638.5 (1%)     max: 690 ms
min: 476.2     avg: 584     median: 572.5 (1%)     max: 727 ms
Sunspider - Sunspider 1.0 Total Score *
134.8 ms (1%)
97.3 ms (1%)
Octane V2 - Octane V2 Total Score
min: 63248     avg: 67856     median: 68002 (50%)     max: 70549 Points
min: 75963     avg: 82625     median: 82948 (61%)     max: 88687 Points
WebXPRT 4 - WebXPRT 4 Score
min: 211     avg: 213.7     median: 212 (58%)     max: 218 Points
min: 183.4     avg: 230.4     median: 232 (64%)     max: 249 Points
WebXPRT 3 - WebXPRT 3 Score
min: 251     avg: 263.7     median: 262 (47%)     max: 280 Points
min: 200     avg: 272.9     median: 275 (49%)     max: 366 Points
PCMark for Android - PCM f. Android Storage 2.0 score
9895 Points (4%)
PCMark for Android - PCM f. Android Work Score 3.0
11617 Points (42%)
CrossMark - CrossMark Overall
min: 1367     avg: 1551     median: 1569 (59%)     max: 1683 Points
min: 1329     avg: 1465     median: 1475 (55%)     max: 1575 Points
CrXPRT 2 - CrXPRT2 Performance Score
173 Points (96%)
Power Consumption - Prime95 Power Consumption - external Monitor *
min: 54.2     avg: 101.9     median: 106 (18%)     max: 154 Watt
min: 24.3     avg: 42.3     median: 42.2 (7%)     max: 51.2 Watt
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
min: 66.3     avg: 119.4     median: 120.5 (22%)     max: 185 Watt
min: 27.8     avg: 54.9     median: 54.5 (10%)     max: 75.9 Watt
Power Consumption - Idle Power Consumption - external Monitor *
min: 18.9     avg: 28     median: 29.9 (20%)     max: 35.1 Watt
min: 4.09     avg: 6.9     median: 6.2 (4%)     max: 12.5 Watt
Power Consumption - Idle Power Consumption 150cd 1min *
min: 7.18     avg: 12.7     median: 11.2 (14%)     max: 21.1 Watt
min: 3.55     avg: 9     median: 6.3 (8%)     max: 30.7 Watt
Power Consumption - Power Efficiency - Cinebench R15 Multi external Monitor
min: 10.5     avg: 17     median: 15.8 (12%)     max: 31.3 Points per Watt
min: 18.7     avg: 25     median: 24.8 (18%)     max: 33.1 Points per Watt

Average Benchmarks Intel Core i7-11800H → 100% n=33

Average Benchmarks Intel Core i7-1255U → 91% n=33

- 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

Add one or more devices and compare

In the following list you can select (and also search for) devices that should be added to the comparison. You can select more than one device.

restrict list:
v1.34
log 07. 09:45:50

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

#1 checking url part for id 13145 +0s ... 0s

#2 checking url part for id 14074 +0s ... 0s

#3 redirected to Ajax server, took 1759823149s time from redirect:0 +0s ... 0s

#4 did not recreate cache, as it is less than 5 days old! Created at Tue, 07 Oct 2025 05:18:31 +0200 +0s ... 0s

#5 composed specs +0.005s ... 0.005s

#6 did output specs +0s ... 0.005s

#7 getting avg benchmarks for device 13145 +0.004s ... 0.009s

#8 got single benchmarks 13145 +0.044s ... 0.052s

#9 getting avg benchmarks for device 14074 +0.004s ... 0.056s

#10 got single benchmarks 14074 +0.02s ... 0.076s

#11 got avg benchmarks for devices +0s ... 0.076s

#12 min, max, avg, median took s +0.071s ... 0.147s

#13 return log +0.003s ... 0.15s

Please share our article, every link counts!
Mail Logo
> 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)