i5-10400T vs i7-990X

Primary details

Comparing Core i7-990X and Core i5-10400T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1307	1079
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.20	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	3.28	16.63
Architecture codename	Gulftown (2010−2011)	no data
Release date	24 February 2011 (13 years ago)	1 April 2020 (4 years ago)
Launch price (MSRP)	$1,104	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-990X and Core i5-10400T 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)	6 (Hexa-Core)
Threads	12	12
Base clock speed	3.46 GHz	2 GHz
Boost clock speed	3.73 GHz	3.6 GHz
Bus rate	6.4 GT/s	8 GT/s
L1 cache	64 KB (per core)	no data
L2 cache	256 KB (per core)	no data
L3 cache	12 MB (shared)	12 MB Intel® Smart Cache
Chip lithography	32 nm	14 nm
Die size	239 mm2	no data
Maximum core temperature	68 °C	100 °C
Number of transistors	1,170 million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	+	-

Compatibility

Information on Core i7-990X and Core i5-10400T 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	FCLGA1366,LGA1366	FCLGA1200
Power consumption (TDP)	130 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-990X and Core i5-10400T. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	2.0
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	-	+
Demand Based Switching	-	no data
PAE	36 Bit	no data
Turbo Boost Max 3.0	no data	-

Security technologies

Core i7-990X and Core i5-10400T technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-990X and Core i5-10400T are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-990X and Core i5-10400T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4-2666
Maximum memory size	24 GB	128 GB
Max memory channels	3	2
Maximum memory bandwidth	25.6 GB/s	41.6 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	1.1 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core i7-990X and Core i5-10400T integrated GPUs.

Number of displays supported

no data

3

Graphics image quality

Maximum display resolutions supported by Core i7-990X and Core i5-10400T integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	no data	4096 x 2160@30Hz
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 i7-990X and Core i5-10400T 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 i7-990X and Core i5-10400T.

PCIe version	2.0	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.

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Pros & cons summary

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Performance score	4.51	6.15
Recency	24 February 2011	1 April 2020
Chip lithography	32 nm	14 nm
Power consumption (TDP)	130 Watt	35 Watt

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Should you still have questions on choice between Core i7-990X and Core i5-10400T, ask them in Comments section, and we shall answer.

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