Xeon Gold 6558Q vs Pentium D 945

Primary details

Comparing Pentium D 945 and Xeon Gold 6558Q processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Architecture codename	Presler (2005−2007)	no data
Release date	23 July 2006 (18 years ago)	1 October 2023 (1 year ago)
Launch price (MSRP)	$163	no data

Detailed specifications

Pentium D 945 and Xeon Gold 6558Q 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	2 (Dual-core)	32 (Dotriaconta-Core)
Threads	2	64
Base clock speed	3.4 GHz	3.2 GHz
Boost clock speed	3.4 GHz	4.1 GHz
L1 cache	16 KB (per core)	no data
L2 cache	2 MB (per die)	no data
L3 cache	0 KB	60 MB
Chip lithography	65 nm	Intel 7 nm
Die size	2x 81 mm2	no data
Maximum core temperature	no data	66 °C
Maximum case temperature (TCase)	63 °C	no data
Number of transistors	376 million	no data
64 bit support	+	-
Windows 11 compatibility	-	no data
VID voltage range	1.2V-1.3375V	no data

Compatibility

Information on Pentium D 945 and Xeon Gold 6558Q 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	no data
Socket	LGA775,PLGA775	FCLGA4677
Power consumption (TDP)	95 Watt	350 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium D 945 and Xeon Gold 6558Q. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI	-	+
Enhanced SpeedStep (EIST)	+	no data
Speed Shift	no data	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
TSX	-	+
Idle States	+	no data
Demand Based Switching	-	no data
PAE	32 Bit	no data
FSB parity	-	no data
Deep Learning Boost	-	+

Security technologies

Pentium D 945 and Xeon Gold 6558Q technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
SGX	no data	Yes with Intel® SPS
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium D 945 and Xeon Gold 6558Q are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium D 945 and Xeon Gold 6558Q. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR5-5200
Maximum memory size	no data	4 TB
Max memory channels	no data	8
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

no data

Peripherals

Specifications and connection of peripherals supported by Pentium D 945 and Xeon Gold 6558Q.

PCIe version	no data	5.0
PCI Express lanes	no data	80

Pros & cons summary

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Recency	23 July 2006	1 October 2023
Physical cores	2	32
Threads	2	64
Power consumption (TDP)	95 Watt	350 Watt

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Should you still have questions on choice between Pentium D 945 and Xeon Gold 6558Q, ask them in Comments section, and we shall answer.

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