Pentium 4 2.66 vs Core i7-7800X

Primary details

Comparing Core i7-7800X and Pentium 4 2.66 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	856	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	6.47	no data
Market segment	Desktop processor	Desktop processor
Series	Intel Core i7	no data
Architecture codename	Skylake (server) (2017−2019)	Northwood (2001−2004)
Release date	26 June 2017 (7 years ago)	August 2002 (21 year ago)
Launch price (MSRP)	$389	no data
Current price	$287 (0.7x MSRP)	$32

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-7800X and Pentium 4 2.66 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)	1 (Single-Core)
Threads	12	1
Base clock speed	3.5 GHz	no data
Boost clock speed	4 GHz	2.66 GHz
Bus support	4 × 8 GT/s	no data
L1 cache	64 KB (per core)	8 KB
L2 cache	1 MB (per core)	512 KB
L3 cache	8.25 MB (shared)	0 KB
Chip lithography	14 nm	130 nm
Die size	no data	146 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	55 million
64 bit support	+	-
Windows 11 compatibility	+	-
Unlocked multiplier	Yes	No

Compatibility

Information on Core i7-7800X and Pentium 4 2.66 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	FCLGA2066	478
Power consumption (TDP)	140 Watt	110 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7800X and Pentium 4 2.66. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512	no data
AES-NI	+	no data
AVX	+	no data
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	no data
Status	Discontinued	no data

Security technologies

Core i7-7800X and Pentium 4 2.66 technologies aimed at improving security, for example, by protecting against hacks.

EDB

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7800X and Pentium 4 2.66 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7800X and Pentium 4 2.66. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400	DDR1, DDR2
Maximum memory size	128 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	77 GB/s	no data
ECC memory support	-	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

N/A

no data

Peripherals

Specifications and connection of peripherals supported by Core i7-7800X and Pentium 4 2.66.

PCIe version	3.0	no data
PCI Express lanes	28	no data

Synthetic benchmark performance

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

---

Pros & cons summary

---

Physical cores	6	1
Threads	12	1
Chip lithography	14 nm	130 nm
Power consumption (TDP)	140 Watt	110 Watt

---

Should you still have questions on choice between Core i7-7800X and Pentium 4 2.66, 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.

---