Core i9-9900 vs Core 2 Extreme QX9775

Primary details

Comparing Core 2 Extreme QX9775 and Core i9-9900 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	753
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	8.85
Market segment	Desktop processor	Desktop processor
Series	no data	Intel Core i9
Power efficiency	no data	15.10
Architecture codename	Yorkfield (2007−2009)	Coffee Lake-R (2018−2019)
Release date	March 2008 (16 years ago)	23 April 2019 (5 years ago)
Launch price (MSRP)	no data	$439

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core 2 Extreme QX9775 and Core i9-9900 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	3.1 GHz
Boost clock speed	3.2 GHz	5 GHz
Bus type	no data	DMI 3.0
Bus rate	1600 MHz	4 × 8 GT/s
L1 cache	64K (per core)	512 KB
L2 cache	12 MB (shared)	2 MB
L3 cache	0 KB	16 MB (shared)
Chip lithography	45 nm	14 nm
Die size	2x 107 mm2	no data
Maximum core temperature	no data	100 °C
Maximum case temperature (TCase)	63 °C	72 °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 Core i9-9900 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 (Uniprocessor)
Socket	LGA771	FCLGA1151
Power consumption (TDP)	150 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Extreme QX9775 and Core i9-9900. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	-	+
AVX	-	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	+	+
SIPP	-	+
Demand Based Switching	-	no data
FSB parity	-	no data

Security technologies

Core 2 Extreme QX9775 and Core i9-9900 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	no data	+
MPX	-	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Extreme QX9775 and Core i9-9900 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme QX9775 and Core i9-9900. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR2	DDR4-2666
Maximum memory size	no data	128 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	42.671 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel UHD Graphics 630
Max video memory	no data	64 GB
Quick Sync Video	-	+
Clear Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.2 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core 2 Extreme QX9775 and Core i9-9900 integrated GPUs.

Number of displays supported

no data

3

Graphics image quality

Maximum display resolutions supported by Core 2 Extreme QX9775 and Core i9-9900 integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	no data	4096 x 2304@24Hz
Max resolution over eDP	no data	4096 x 2304@60Hz
Max resolution over DisplayPort	no data	4096 x 2304@60Hz

Graphics API support

APIs supported by Core 2 Extreme QX9775 and Core i9-9900 integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.5

Peripherals

Specifications and connection of peripherals supported by Core 2 Extreme QX9775 and Core i9-9900.

PCIe version	no data	3.0
PCI Express lanes	no data	16

Pros & cons summary

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Physical cores	4	8
Threads	4	16
Chip lithography	45 nm	14 nm
Power consumption (TDP)	150 Watt	65 Watt

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Should you still have questions on choice between Core 2 Extreme QX9775 and Core i9-9900, ask them in Comments section, and we shall answer.

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