Core Ultra 7 155U vs Celeron 787

Primary details

Comparing Celeron 787 and Core Ultra 7 155U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	681
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	Intel Meteor Lake-U
Architecture codename	Sandy Bridge (2011−2013)	Meteor Lake-P
Release date	1 July 2011 (13 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$107	no data

Detailed specifications

Celeron 787 and Core Ultra 7 155U 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	1 (Single-Core)	12 (Dodeca-Core)
Threads	1	142 x 4.8  GHz Intel Redwood Cove P-Core8 x 3.8  GHz Intel Crestmont E-Core2 x 2.1  GHz Intel Crestmont E-Core
Base clock speed	1.3 GHz	1.7 GHz
Boost clock speed	1.3 GHz	4.8 GHz
Bus support	4 × 5 GT/s	no data
L1 cache	64 KB (per core)	112 KB (per core)
L2 cache	256 KB (per core)	2 MB (per core)
L3 cache	1.5 MB (shared)	12 MB (shared)
Chip lithography	32 nm	7 nm
Die size	131 mm2	no data
Maximum core temperature	100 °C	no data
Number of transistors	504 million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	No	No

Compatibility

Information on Celeron 787 and Core Ultra 7 155U 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	FCBGA1023	FCBGA2049
Power consumption (TDP)	17 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 787 and Core Ultra 7 155U. You'll probably need this information if you require some particular technology.

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

Security technologies

Celeron 787 and Core Ultra 7 155U technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	no data	+
OS Guard	no data	+
Anti-Theft	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 787 and Core Ultra 7 155U are enumerated here.

VT-d	-	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 787 and Core Ultra 7 155U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5
Maximum memory size	16 GB	96 GB
Max memory channels	2	2
Maximum memory bandwidth	21.3 GB/s	no data
ECC memory support	-	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	Intel® Graphics
Quick Sync Video	-	+
Graphics max frequency	950 MHz	1.95 GHz

Graphics interfaces

Available interfaces and connections of Celeron 787 and Core Ultra 7 155U integrated GPUs.

Number of displays supported	2	4
eDP	+	no data
DisplayPort	+	no data
HDMI	+	no data
SDVO	+	no data
CRT	+	no data

Graphics image quality

Maximum display resolutions supported by Celeron 787 and Core Ultra 7 155U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)
Max resolution over eDP	no data	3840x2400 @ 120Hz
Max resolution over DisplayPort	no data	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Celeron 787 and Core Ultra 7 155U integrated GPUs, sometimes API versions are included.

DirectX	no data	12.2
OpenGL	no data	4.6

Peripherals

Specifications and connection of peripherals supported by Celeron 787 and Core Ultra 7 155U.

PCIe version	2.0	4.0
PCI Express lanes	16	20
PCI support	no data	4.0

Pros & cons summary

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Recency	1 July 2011	14 December 2023
Physical cores	1	12
Threads	1	142 x 4.8 GHz Intel Redwood Cove P-Core8 x 3.8 GHz Intel Crestmont E-Core2 x 2.1 GHz Intel Crestmont E-Core
Chip lithography	32 nm	7 nm
Power consumption (TDP)	17 Watt	15 Watt

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