i9-14900KF vs i7-975

Primary details

Comparing Core i7-975 and Core i9-14900KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1849	82
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.13	66.51
Market segment	Desktop processor	Desktop processor
Series	Core i7 (Desktop)	no data
Power efficiency	1.60	28.30
Architecture codename	Bloomfield (2008−2010)	Raptor Lake-R (2023−2024)
Release date	2 June 2009 (15 years ago)	17 October 2023 (1 year ago)
Launch price (MSRP)	$476	$564

Cost-effectiveness evaluation

Performance per price, higher is better.

i9-14900KF has 51062% better value for money than i7-975.

Detailed specifications

Core i7-975 and Core i9-14900KF 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	4 (Quad-Core)	24 (Tetracosa-Core)
Performance-cores	no data	8
Efficient-cores	no data	16
Threads	8	32
Base clock speed	3.33 GHz	3.2 GHz
Boost clock speed	3.6 GHz	5.8 GHz
Bus rate	1333 MHz	no data
L1 cache	64 KB (per core)	80 KB (per core)
L2 cache	256 KB (per core)	2 MB (per core)
L3 cache	8 MB (shared)	36 MB (shared)
Chip lithography	45 nm	Intel 7 nm
Die size	263 mm2	257 mm2
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	68 °C	no data
Number of transistors	731 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	+	+

Compatibility

Information on Core i7-975 and Core i9-14900KF 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	FCLGA1366	FCLGA1700
Power consumption (TDP)	130 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-975 and Core i9-14900KF. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	1.0	2.0
Hyper-Threading Technology	+	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	-	+
Demand Based Switching	-	no data
PAE	36 Bit	no data
Turbo Boost Max 3.0	no data	+
Deep Learning Boost	-	+

Security technologies

Core i7-975 and Core i9-14900KF technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	no data	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-975 and Core i9-14900KF are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-975 and Core i9-14900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5-5600, DDR4-3200
Maximum memory size	24 GB	192 GB
Max memory channels	3	2
Maximum memory bandwidth	25.6 GB/s	89.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

N/A

Peripherals

Specifications and connection of peripherals supported by Core i7-975 and Core i9-14900KF.

PCIe version	2.0	5.0 and 4.0
PCI Express lanes	no data	16

Synthetic benchmark performance

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

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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.

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Pros & cons summary

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Performance score	2.20	37.38
Recency	2 June 2009	17 October 2023
Physical cores	4	24
Threads	8	32
Power consumption (TDP)	130 Watt	125 Watt

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Should you still have questions on choice between Core i7-975 and Core i9-14900KF, ask them in Comments section, and we shall answer.

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