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Intel Xeon W-11955M

Intel W-11955M

The Intel Xeon W-11955M is a high end octa core SoC for laptops and mobile workstations. It is based on the Tiger Lake H45 generation and was announced in mid 2021. It integrates eight Willow Cove processor cores (16 threads thanks to HyperThreading). The base clock speed depends on the TDP setting and at 45 Watt is at 2.6 GHz. The single core boost speed can reach up to 5 GHz (ITBM 3.0, also two cores), all cores can reach up to 4.5 GHz. The CPU offers 24 MB level 3 cache and supports DDR4-3200 memory. Similar to the Core i9-11950H, the Xeon W-11955M supports SIPP, vPro and TXT. In addition to this, the Xeon line supports ECC memory.

Thanks to the new Tiger Lake architecture, the Xeon W-11955M should be significantly faster than the old Intel Core i9-10980HK (Comet Lake-H, 2.4 - 5.3 GHz, 16 MB L3) in single and multi threaded performance and similar to the Ryzen 9 5980HX (Zen 3, 3.3 - 4.8 GHz, 16 MB L3). Therefore, the i9 should be one of the fastest laptop CPUs in 2021 and well suited for even very demanding tasks.

The SoC also included the improved Xe graphics card called UHD graphics with all 32 EUs.

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.

The chip is produced in the improved 10nm process (called 10nm SuperFin) at Intel, which should be comparable to the 7nm process at TSMC (e.g. Ryzen 4000 series). The default TDP is rated at 45 W, at 65 Watt the base clock speed increases to 3.3 GHz (cTDP up).

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

SeriesIntel Tiger Lake
CodenameTiger Lake H45
Series: Tiger Lake Tiger Lake H45
Intel Core i9-11980HK compare2.6 - 5 GHz8 / 1624 MB
Intel Core i9-11900H compare2.5 - 4.9 GHz8 / 1624 MB
Intel Core i9-11950H compare2.6 - 5 GHz8 / 1624 MB
» Intel Xeon W-11955M2.6 - 5 GHz8 / 1624 MB
Intel Core i7-11850H compare2.5 - 4.8 GHz8 / 1624 MB
Intel Core i7-11800H compare2.3 - 4.6 GHz8 / 1624 MB
Intel Core i7-11600H compare2.9 - 4.6 GHz6 / 1218 MB
Intel Core i5-11500H compare2.9 - 4.6 GHz6 / 1212 MB
Intel Xeon W-11855M compare3.2 - 4.8 GHz6 / 1218 MB
Intel Core i5-11400H compare2.7 - 4.5 GHz6 / 1212 MB
Intel Core i5-11260H compare2.6 - 4.4 GHz6 / 1212 MB
Clock Rate2600 - 5000 MHz
Level 1 Cache640 KB
Level 2 Cache10 MB
Level 3 Cache24 MB
Number of Cores / Threads8 / 16
Power Consumption (TDP = Thermal Design Power)45 Watt
Manufacturing Technology10 nm
Max. Temperature100 °C
FeaturesDL Boost, GNA, Wi-Fi 6/6e, Thunderbolt 4, DDR4-3200 / LPDDR4x-4266 ECC
GPUIntel UHD Graphics Xe 32EUs (Tiger Lake-H) (350 - 1450 MHz)
64 Bit64 Bit support
Announcement Date05/11/2021


Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
1846 Points (19%)
HWBOT x265 Benchmark v2.2 - HWBOT x265 4k Preset
13.4 fps (29%)
Power Consumption - Prime95 Power Consumption - external Monitor *
89.3 Watt (15%)
Power Consumption - Cinebench R15 Multi Power Consumption - external Monitor *
98.2 Watt (26%)
Power Consumption - Idle Power Consumption 150cd *
27.3 Watt (89%)
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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