Core i9-9990XE vs Core 2 Duo E8400

Primary details

Comparing Core 2 Duo E8400 and Core i9-9990XE processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2562	268
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.86	4.80
Market segment	Desktop processor	Desktop processor
Series	no data	Intel Core i9
Architecture codename	Wolfdale (2008−2010)	Skylake (server) (2017−2019)
Release date	1 January 2008 (16 years ago)	19 October 2018 (5 years ago)
Current price	$61	$2163

Cost-effectiveness evaluation

Performance per price, higher is better.

i9-9990XE has 158% better value for money than Core 2 Duo E8400.

Detailed specifications

Core 2 Duo E8400 and Core i9-9990XE 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)	14 (Tetradeca-Core)
Threads	2	28
Base clock speed	3 GHz	4 GHz
Boost clock speed	3 GHz	5.1 GHz
Bus support	no data	4 × 8 GT/s
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	6 MB (shared)	1 MB (per core)
L3 cache	0 KB	19.25 MB (shared)
Chip lithography	45 nm	14 nm
Die size	104 mm2	no data
Maximum core temperature	72 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	410 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	Yes
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Duo E8400 and Core i9-9990XE 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	LGA775	2066
Power consumption (TDP)	65 Watt	255 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E8400 and Core i9-9990XE. You'll probably need this information if you require some particular technology.

AES-NI	-	+
AVX	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
TSX	no data	+
Idle States	+	no data
Thermal Monitoring	+	no data
Demand Based Switching	-	no data
FSB parity	-	no data
Status	Discontinued	no data

Security technologies

Core 2 Duo E8400 and Core i9-9990XE 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 Duo E8400 and Core i9-9990XE are enumerated here.

VT-d	+	+
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E8400 and Core i9-9990XE. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4 Quad-channel
Maximum memory size	no data	128 GB
Max memory channels	no data	4
Maximum memory bandwidth	no data	85.33 GB/s
ECC memory support	no data	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

N/A

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo E8400 and Core i9-9990XE.

PCIe version	2.0	3.0
PCI Express lanes	no data	44

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 i9-9990XE outperforms Core 2 Duo E8400 by 2500% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	0.75	19.50
Recency	1 January 2008	19 October 2018
Physical cores	2	14
Threads	2	28
Chip lithography	45 nm	14 nm
Power consumption (TDP)	65 Watt	255 Watt

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Should you still have questions on choice between Core 2 Duo E8400 and Core i9-9990XE, ask them in Comments section, and we shall answer.

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