Core i9-9900KS vs Core 2 Extreme X7800

Primary details

Comparing Core 2 Extreme X7800 and Core i9-9900KS processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2581	566
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	12.58
Market segment	Laptop	Desktop processor
Series	Intel Core 2 Extreme	Intel Core i9
Architecture codename	Merom XE (2007)	Coffee Lake-R (2018−2019)
Release date	17 July 2007 (16 years ago)	28 October 2019 (4 years ago)
Launch price (MSRP)	$851	$513
Current price	$299 (0.4x MSRP)	$550 (1.1x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core 2 Extreme X7800 and Core i9-9900KS 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)	8 (Octa-Core)
Threads	2	16
Base clock speed	2.6 GHz	4 GHz
Boost clock speed	2.6 GHz	5 GHz
Bus support	800 MHz	no data
L1 cache	128 KB	64K (per core)
L2 cache	4 MB	256K (per core)
L3 cache	4 MB L2 Cache	16 MB (shared)
Chip lithography	65 nm	14 nm
Die size	143 mm2	178 mm2
Maximum core temperature	100 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	291 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	No	Yes
VID voltage range	1.1V-1.375V	no data

Compatibility

Information on Core 2 Extreme X7800 and Core i9-9900KS 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	no data	1
Socket	PPGA478	FCLGA1151
Power consumption (TDP)	44 Watt	127 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Extreme X7800 and Core i9-9900KS. 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	no data	+
AVX	no data	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	2.0
Hyper-Threading Technology	-	+
TSX	no data	+
Idle States	no data	+
Thermal Monitoring	no data	+
SIPP	no data	+
Demand Based Switching	-	no data
FSB parity	-	no data
Status	Discontinued	Discontinued

Security technologies

Core 2 Extreme X7800 and Core i9-9900KS technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Extreme X7800 and Core i9-9900KS are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme X7800 and Core i9-9900KS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR4
Maximum memory size	no data	128 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	41.6 GB/s
ECC memory support	no data	-

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	no data	+
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 X7800 and Core i9-9900KS integrated GPUs.

Number of displays supported

no data

3

Graphics image quality

Maximum display resolutions supported by Core 2 Extreme X7800 and Core i9-9900KS 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 X7800 and Core i9-9900KS 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 X7800 and Core i9-9900KS.

PCIe version	no data	3.0
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.

Core i9-9900KS outperforms Core 2 Extreme X7800 by 1603% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	0.74	12.60
Recency	17 July 2007	28 October 2019
Physical cores	2	8
Threads	2	16
Cost	$851	$513
Chip lithography	65 nm	14 nm
Power consumption (TDP)	44 Watt	127 Watt

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Should you still have questions on choice between Core 2 Extreme X7800 and Core i9-9900KS, ask them in Comments section, and we shall answer.

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