Ultra 9 285K vs Xeon W-10855M

Primary details

Comparing Xeon W-10855M and Core Ultra 9 285K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	936	53
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	69.52
Market segment	Mobile workstation	Desktop processor
Series	Intel Comet Lake	no data
Power efficiency	16.74	32.38
Architecture codename	Comet Lake-H (2020)	Arrow Lake-S (2024−2025)
Release date	13 May 2020 (4 years ago)	24 October 2024 (recently)
Launch price (MSRP)	no data	$589

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon W-10855M and Core Ultra 9 285K basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	6 (Hexa-Core)	24 (Tetracosa-Core)
Threads	12	24
Base clock speed	2.8 GHz	3.7 GHz
Boost clock speed	4.9 GHz	5.7 GHz
Bus rate	8 GT/s	250 MHz
L1 cache	384 KB	112 KB (per core)
L2 cache	1.5 MB	3 MB (per core)
L3 cache	12 MB	36 MB (shared)
Chip lithography	14 nm	3 nm
Die size	no data	243 mm2
Maximum core temperature	100 °C	no data
Number of transistors	no data	17,800 million
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	-	+

Compatibility

Information on Xeon W-10855M and Core Ultra 9 285K compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1
Socket	FCBGA1440	1851
Power consumption (TDP)	45 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon W-10855M and Core Ultra 9 285K. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	no data
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
Hyper-Threading Technology	+	no data
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
SIPP	+	-
Turbo Boost Max 3.0	+	no data

Security technologies

Xeon W-10855M and Core Ultra 9 285K technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data
Secure Key	+	no data
Identity Protection	+	-
SGX	Yes with Intel® ME	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon W-10855M and Core Ultra 9 285K are enumerated here.

AMD-V	+	-
VT-d	+	+
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon W-10855M and Core Ultra 9 285K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR5 Depends on motherboard
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	45.8 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® UHD Graphics for 10th Gen Intel® Processors	Arc Xe-LPG Graphics 64EU
Quick Sync Video	+	-
Graphics max frequency	1.2 GHz	no data

Graphics interfaces

Available interfaces and connections of Xeon W-10855M and Core Ultra 9 285K integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Xeon W-10855M and Core Ultra 9 285K integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@30Hz	no data
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	no data

Graphics API support

APIs supported by Xeon W-10855M and Core Ultra 9 285K integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Xeon W-10855M and Core Ultra 9 285K.

PCIe version	3.0	5.0
PCI Express lanes	16	20

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

---

Pros & cons summary

---

Performance score	8.11	43.58
Recency	13 May 2020	24 October 2024
Physical cores	6	24
Threads	12	24
Chip lithography	14 nm	3 nm
Power consumption (TDP)	45 Watt	125 Watt

---

Should you still have questions on choice between Xeon W-10855M and Core Ultra 9 285K, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---