End-of-lifeCore i7 (Coffee Lake)

Intel · Core i7

Intel Core i7-8670T

Hexa-core desktop performance in a highly efficient 35W envelope.

Mini PCsAll-in-OnesHome Theater PCsOffice DesktopsDigital Signage

Cores / Threads

6/ 12

Base / Boost

2.3/ 3.7 GHz

PCIe Lanes

16

L3 Cache

12MB

TDP

35W

Socket

Intel Socket 1151

Verdict

8/ 10

80

Quick Verdict

An excellent choice for compact builds, offering six cores within a strict 35W TDP for silent operation and solid productivity performance.

Best for:Mini PCsAll-in-OnesHome Theater PCsOffice DesktopsDigital Signage

Overview

Launch

Sep 1st, 2018

Status

End-of-life

Generation

Core i7 (Coffee Lake)

Market

Desktop

About this CPU

The Intel Core i7-8670T is a low-power desktop processor engineered for small form factor PCs, AIO systems, and space-constrained environments where thermal dissipation is limited. Belonging to the 8th Gen Coffee Lake family, it distinguishes itself with a 35-watt thermal design power, significantly lower than standard desktop chips. Despite its power-saving orientation, it boasts six cores and twelve threads, delivering robust multitasking capabilities. The processor operates at a base frequency of 2.3 GHz and can boost up to 3.7 GHz, ensuring responsive performance for both everyday computing and demanding applications. Integrated UHD Graphics 630 allow it to handle basic display tasks without a discrete GPU, making it ideal for compact office machines. This low-TDP approach allows system builders to create quieter, cooler, and more energy-efficient desktops without heavily sacrificing the core count and multi-threaded performance necessary for modern productivity workloads and moderate content creation. Its ability to fit into Mini-ITX cases with minimal cooling requirements makes it a favorite for HTPC builders and corporate environments prioritizing energy savings.

The Intel Core i7-8670T is a Coffee Lake processor featuring 6 cores and 12 threads. With a base clock of 2.3 GHz and a boost of 3.

7 GHz, it balances performance and power. Its 35W TDP makes it ideal for Mini-ITX builds and AIOs where cooling and noise are concerns.

Specifications

ArchitectureCoffee Lake
Manufacturing Process14nm
Cores / Threads6 / 12
Base Clock2.3 GHz
Boost Clock3.7 GHz
L3 Cache12 MB
TDP35 W
Memory TypeDDR4
Memory Speed2666 MT/s
Memory ChannelsDual-Channel (2)
Max Memory128 GB
PCIe Version / LanesGen 3 × 16
Integrated GraphicsYes
Dual-Channel16 PCIe Lanes
Target Audience
GamersStreamersContent CreatorsDevelopersWorkstation UsersOffice UsersStudents

Performance

Productivity
85Very Good

Handles office tasks and multitasking effortlessly due to 6 cores.

Virtualization
80Very Good

Good for light VMs in a compact form factor.

Gaming
60Below Average

Good for gaming when paired with a discrete GPU, though clock speeds limit high-refresh play.

Efficiency
98Excellent

Exceptional efficiency, runs very cool and quiet.

GamingGood
  • Needs a discrete GPU for serious gaming
  • Lower base clock may bottleneck fast GPUs
  • Great for SFF gaming builds
CreatorGood
1080p Video EditingPhoto EditingGraphic Design
AI / MLLimited
  • No AI accelerators
  • Relies on CPU cores
Industry Impact
Gaming
Moderate
Workstations
Moderate
Content Creation
Moderate
Virtualization
Moderate

Architecture

14nm

Process Node

Coffee Lake

Codename

6C / 12T

Core Config

12 MB

L3 Cache

35 W

TDP

Architecture Overview

Built on Intel's 14nm Coffee Lake architecture, the Core i7-8670T utilizes a silicon design optimized for low-power desktop environments. It integrates six physical cores with twelve threads via Intel's Hyper-Threading technology, a significant upgrade for the T-series segment. The architecture includes 12 MB of SmartCache L3 memory, ensuring efficient data sharing across cores. It supports dual-channel DDR4 memory at 2666 MT/s, providing adequate bandwidth for integrated graphics and system responsiveness. The processor connects via LGA 1151 socket and offers 16 PCIe 3.0 lanes, sufficient for a discrete GPU or high-speed NVMe storage. The 'T' suffix architecture focuses on strict power gating and lower voltage curves compared to the 65W variants. This allows the chip to maintain a 35W TDP while still delivering burst frequencies via Intel Turbo Boost 2.0. The integrated UHD 630 graphics operate dynamically, handling hardware-accelerated video decoding and multi-display outputs efficiently within the low power envelope.

CPU Design

6 cores, 12 threads, optimized for 35W.

Memory Subsystem

Dual-channel DDR4-2666.

PCIe & I/O

16 PCIe 3.0 lanes.

Overclocking

Locked multiplier.

Generation Comparison
Intel Core i7-7700TIntel Core i7-8670TIntel Core i7-9700T
  • Two additional cores
  • Four additional threads
  • Larger L3 cache

Key Highlights

35W TDP
Incredibly power-efficient for a hexa-core desktop chip.
Six Cores
Excellent multitasking without high heat output.
Socket 1151
Compatible with widely available 300-series motherboards.
UHD 630 Graphics
Capable of 4K media playback without a discrete GPU.
Strengths
  • Extremely low 35W TDP
  • Six cores for multitasking
  • Quiet operation capability
  • Good integrated graphics for media
Weaknesses
  • Lower clock speeds
  • Locked multiplier
  • Harder to find on the used market
  • Not ideal for heavy workloads

History

Launch Date
Sep 1st, 2018
Status
End-of-life
Generation
Core i7 (Coffee Lake)
Market
Desktop
The Story

The Core i7-8670T launched in September 2018 as part of Intel's broader rollout of low-power Coffee Lake desktop processors. This release came shortly after the initial 8th Gen desktop launch, addressing the specific needs of the small form factor and All-in-One (AIO) markets. Previously, Intel's low-TDP desktop offerings were often dual-core or quad-core, struggling to meet the demands of modern multitasking in compact chassis.

With AMD's Ryzen architecture pushing higher core counts across all segments, Intel responded by expanding their Coffee Lake lineup to include 35W variants with up to six cores. The i7-8670T was a direct result of this competitive pressure, bringing hexa-core processing to slim desktops. It allowed manufacturers to build sleek, quiet AIOs and mini PCs capable of handling intensive office workloads, light photo editing, and 4K media consumption without the thermal output of standard 65W or 95W processors, redefining expectations for compact desktop performance.

Improvements over Previous Generation

  • Two additional cores
  • Four additional threads
  • Larger L3 cache

Alternatives & Competitors

Intel Core i7-8700T
Slightly higher clocks within the same 35W envelope.
AMD Ryzen 5 5600GE
Newer, faster, and more efficient.
Intel Core i5-10400T
Cheaper 10th gen alternative with similar performance.
Intel Core i7-9700T
Successor with slightly better clocks.
AMD Ryzen 5 4600G
Better integrated graphics and multi-threading.
Direct Competitors
AMD Ryzen 5 2600EIntel Core i5-8500TIntel Core i7-8700TAMD Ryzen 5 3400GEIntel Core i5-9400T

Should You Buy It?

Recommended for the right buyer

Building a near-silent Mini-ITX PC for the living room or office.

Avoid if…

  • High-refresh-rate gaming
  • Heavy 3D rendering
  • Overclocking

Use Cases

Silent Office PC
Excellent
Home Theater PC
Excellent
Light Productivity
Very Good
Compact Gaming (with GPU)
Good
4K Video Editing
Fair

Interesting Facts

The 'T' suffix designates a low-power desktop processor.

It consumes half the power of the standard i7-8700.

Can be passively cooled with the right case.

Includes Intel TSX-NI instructions.

Features UHD Graphics 630.

Supports Intel Optane Memory.

Uses the LGA 1151 socket.

Released in September 2018.

Has a tCASE max of 72°C.

Max turbo frequency is 3.7 GHz.

People Also Ask

What does the T mean in i7-8670T?

It stands for a low-power desktop variant with a 35W TDP.

Can the i7-8670T be overclocked?

No, it has a locked multiplier.

Is the i7-8670T good for gaming?

It's okay for 60fps gaming with a GPU, but not for high refresh rates.

Does the i7-8670T come with a cooler?

OEMs usually provide coolers, but it often requires a separate purchase for retail.

Can I use i7-8670T without a GPU?

Yes, it has Intel UHD Graphics 630.

What is the TDP of i7-8670T?

35 Watts.

What socket does i7-8670T use?

LGA 1151.

Does it support DDR4?

Yes, up to 2666 MT/s.

How many cores does it have?

6 cores and 12 threads.

Is it good for a home server?

Excellent, due to low power and 12 threads.

Frequently Asked Questions

Does i7-8670T support Windows 11?

Officially no, but it can run it with workarounds.

Can it run 4K video?

Yes, the UHD 630 handles 4K playback smoothly.

What is the max temperature?

The tCase max is 72°C.

Does it support ECC memory?

No, it does not support ECC.

Is it faster than an i5-8400?

Slightly slower in bursts, but similar in multi-core.

What chipsets support it?

Intel 300 series chipsets.

Does it have Hyper-Threading?

Yes, 6 cores / 12 threads.

Can it fit in a Mini-ITX case?

Yes, it's perfect for SFF builds.

Does it have AES-NI?

Yes.

What is the L3 cache size?

12 MB.