CPU Comparison
Intel Core i5-9400T vs Intel Core i7-8700T
A side-by-side comparison of specs, performance and value. The Intel Core i5-9400T is a low-power, six-core desktop processor introduced as part of the Coffee Lake Refresh lineup, designed specifically for small form factor (SFF) systems and mini PCs where thermal constraints are strict.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Handles office applications, large spreadsheets, and multitasking without issues.
Handles heavy office workloads and multitasking smoothly.
Gaming
Capable of light eSports gaming using integrated graphics, but not suited for AAA titles.
Good gaming performance when paired with a mid-range GPU.
Virtualization
Can run basic VMs, but lacks Hyper-Threading for heavy parallel workloads.
Excellent for running multiple light VMs.
Efficiency
Outstanding power-to-performance ratio for low-power segments.
One of the most efficient hexa-core desktop chips of its era.
Specialized Performance
AI / ML
- No dedicated AI hardware
- Low core clocks limit CPU-based inference
- No dedicated AI hardware
- CPU inference is decent due to 12 threads
Content Creation
Gaming
- UHD 630 handles older or lightweight games well
- Pairs best with discrete GPUs for 1080p gaming
- Not ideal for high-refresh-rate AAA gaming
- Best paired with GTX 1660 or RTX 3060 class GPUs
- Low base clock won't bottleneck as much due to high turbo
- Great for SFF gaming
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Extremely low 35W TDP
- 6 physical cores for multitasking
- Integrated UHD Graphics 630
- Runs exceptionally cool
- Quiet operation potential
Cons
- Low base clock of 1.8 GHz
- No Hyper-Threading
- Locked multiplier
- End-of-life platform
- Limited upgrade path
Pros
- Extremely low 35W TDP
- 6 cores and 12 threads
- High 4.0 GHz turbo boost
- Great for passive cooling
Cons
- Locked multiplier
- Lower base clock
- Hard to find retail
- 14nm process is outdated
Competitors & Alternatives
Intel Core i5-9400T
- AMD Ryzen 5 2600ERival
Low Power Desktop
- AMD Ryzen 5 3400GERival
Low Power Desktop
- Compare head-to-headIntel Core i5-8500TRival
Low Power Desktop
- Compare head-to-headIntel Core i7-8700TRival
Low Power Desktop
- AMD Ryzen 3 3200GERival
Low Power Desktop
Better raw performance if power constraints are not a strict issue.
Compare head-to-headSlightly higher clocks within the same 35W envelope.
Compare head-to-head- Intel Core i3-9100Alt
Cheaper alternative for basic office needs.
- AMD Ryzen 5 3400GAlt
Significantly better integrated graphics performance.
- Intel Core i5-10400TAlt
Newer generation with Hyper-Threading support.
Intel Core i7-8700T
- AMD Ryzen 5 2600ERival
Low Power Desktop
- Compare head-to-headIntel Core i7-8670TRival
Low Power Desktop
- AMD Ryzen 7 2700ERival
Low Power Desktop
- Compare head-to-headIntel Core i5-8500TRival
Low Power Desktop
- Intel Core i7-9700TRival
Low Power Desktop
- AMD Ryzen 5 5600GEAlt
Much newer and more efficient.
- Intel Core i5-10400TAlt
Similar performance, newer generation.
If you have the cooling for 65W, it's much faster.
Compare head-to-head- AMD Ryzen 5 4600GAlt
Better integrated graphics and IPC.
Our Verdict on Each
An efficient 6-core chip that trades raw clock speed for a strict 35W thermal envelope, making it perfect for compact systems but less ideal for heavy workloads.
Best for: Building or upgrading a low-power, small form factor system where a 35W TDP is strictly required.
Read the full reviewAn outstanding 35W processor that doesn't compromise on core count, perfect for silent builds requiring strong multi-threaded capability.
Best for: Building a Small Form Factor (SFF) PC for silent operation.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-9400T or Intel Core i7-8700T?
Based on our editorial ratings, the Intel Core i7-8700T comes out ahead with a score of 8.2/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Intel Core i5-9400T or Intel Core i7-8700T?
For gaming, the Intel Core i7-8700T leads with a gaming performance score of 65/100 among Intel Core i5-9400T and Intel Core i7-8700T.
Do Intel Core i5-9400T and Intel Core i7-8700T use the same socket?
Yes — all of these CPUs use the Intel Socket 1151 socket, so they share compatible motherboards.
Which is faster in multi-core benchmarks?
The Intel Core i7-8700T posts the highest multi-core benchmark score. Multi-core results: Intel Core i7-8700T (13,500). Benchmark figures are approximate and workload-dependent.