Ryzen 7 5800X vs Core 2 Extreme QX9775

Primary details

Comparing Core 2 Extreme QX9775 and Ryzen 7 5800X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	354
Place by popularity	not in top-100	60
Cost-effectiveness evaluation	no data	23.47
Market segment	Desktop processor	Desktop processor
Series	no data	AMD Ryzen 7
Power efficiency	no data	15.81
Architecture codename	Yorkfield (2007−2009)	Vermeer (Zen 3) (2020−2022)
Release date	March 2008 (16 years ago)	8 October 2020 (4 years ago)
Launch price (MSRP)	no data	$449

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core 2 Extreme QX9775 and Ryzen 7 5800X 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)	8 (Octa-Core)
Threads	4	16
Base clock speed	3.2 GHz	3.8 GHz
Boost clock speed	3.2 GHz	4.7 GHz
Bus rate	1600 MHz	no data
Multiplier	no data	38
L1 cache	64K (per core)	512 KB
L2 cache	12 MB (shared)	4 MB
L3 cache	0 KB	32 MB
Chip lithography	45 nm	7 nm, 12 nm
Die size	2x 107 mm2	2 x 80.7 sq. mm; I/O = 125 mm2
Maximum core temperature	no data	90 °C
Maximum case temperature (TCase)	63 °C	95 °C
Number of transistors	820 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	+	+
VID voltage range	0.85V-1.35V	no data

Compatibility

Information on Core 2 Extreme QX9775 and Ryzen 7 5800X 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	LGA771	AM4
Power consumption (TDP)	150 Watt	105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Extreme QX9775 and Ryzen 7 5800X. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	-	no data
FSB parity	-	no data
Precision Boost 2	no data	+

Security technologies

Core 2 Extreme QX9775 and Ryzen 7 5800X technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Extreme QX9775 and Ryzen 7 5800X are enumerated here.

AMD-V	-	+
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme QX9775 and Ryzen 7 5800X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR2	DDR4
Maximum memory size	no data	128 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	51.196 GB/s

Peripherals

Specifications and connection of peripherals supported by Core 2 Extreme QX9775 and Ryzen 7 5800X.

PCIe version

no data

4.0

Pros & cons summary

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Physical cores	4	8
Threads	4	16
Chip lithography	45 nm	7 nm
Power consumption (TDP)	150 Watt	105 Watt

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Should you still have questions on choice between Core 2 Extreme QX9775 and Ryzen 7 5800X, ask them in Comments section, and we shall answer.

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