CPU Comparison
Intel Core i5-13400T vs Intel Core i5-1240U
A side-by-side comparison of specs, performance and value. The Intel Core i5-13400T is a 10-core, 16-thread low-power desktop processor designed for compact and small-form-factor (SFF) PCs. Released in January 2023, it features 6 P-Cores and 4 E-Cores, operating at a low 1.3 GHz base frequency to maintain a strict 35W TDP. Boosting up to 4.4 GHz, it provides sufficient burst performance for everyday tasks and moderate workloads without exceeding the thermal limits of tiny enclosures. The 20MB L3 cache and DDR5-4800 support ensure smooth multitasking, while the UHD 730 integrated graphics handle display outputs capably. The 'T' suffix designates it as a power-optimized variant, making it ideal for home theater PCs, office SFF builds, and home servers where quiet operation and low heat generation are paramount. Its locked multiplier and low base power simplify integration into barebones systems and compact chassis.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Good burst performance for office tasks, but 35W limits sustained multi-threaded workloads.
Handles office tasks and browser tabs well, though burst limits are low.
Gaming
Not a gaming chip; relies on UHD 730 which is only suitable for very old or simple games.
Only suitable for 2D or very old 3D games at low resolutions.
Virtualization
10 cores are great for lightweight home lab VMs, but RAM and PCIe limits apply.
Can run a light VM, but heavily constrained by the 9W power limit.
Efficiency
Outstanding efficiency; runs very cool and draws minimal power at idle.
Exceptional efficiency, allowing for multi-day battery life in small batteries.
Specialized Performance
AI / ML
- No dedicated AI hardware
- Sufficient for background noise cancellation
- Handles basic background blur.
- Not suited for any demanding AI workloads.
Content Creation
Gaming
- UHD 730 lacks the execution units of the UHD 770
- 35W limit throttles boost clocks quickly in games
- Best paired with a low-profile discrete GPU for SFF gaming
- iGPU is capped at 900 MHz to save power.
- Best for hardware video decoding and simple 2D games.
- Not suitable for 3D gaming.
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Extremely low 35W TDP
- 10 cores and 16 threads
- Runs very cool and quiet
- Modern DDR5 and PCIe 5.0 support
- Includes UHD 730 graphics
Cons
- Very low base clock (1.3 GHz)
- UHD 730 iGPU is weak
- Locked multiplier
- Harder to find than standard 65W variants
Pros
- Exceptional 9W power efficiency
- Allows for silent, fanless designs
- 10 cores for great everyday multitasking
- Supports LPDDR5 memory
- Excellent battery life
Cons
- Very low boost power limit (29W)
- iGPU clocked very low (900 MHz)
- Not suitable for heavy workloads
- Soldered to the motherboard
Competitors & Alternatives
Intel Core i5-13400T
- AMD Ryzen 5 5600GERival
Low-Power Desktop
- AMD Ryzen 5 PRO 4650GERival
Low-Power Desktop
- Compare head-to-headIntel Core i5-13500TRival
Low-Power Desktop
- Compare head-to-headIntel Core i3-13100TRival
Low-Power Desktop
- AMD Ryzen 7 5700GERival
Low-Power Desktop
- AMD Ryzen 5 8600GAlt
Much stronger integrated graphics for SFF gaming.
Higher base clocks and better sustained performance if you have the cooling.
Compare head-to-headCheaper 4-core alternative for basic NAS or HTPC duties.
Compare head-to-head- AMD Ryzen 7 5700GAlt
8 strong cores and excellent integrated graphics for compact builds.
Intel Core i5-1240U
- AMD Ryzen 5 5425URival
Mobile
- Compare head-to-headApple M2Rival
Mobile
- Compare head-to-headIntel Core i3-1215URival
Mobile
- Compare head-to-headIntel Core i7-1250URival
Mobile
- Qualcomm Snapdragon 8cx Gen 3Rival
Mobile
Higher base power (15W) for slightly better sustained performance.
Compare head-to-head- Alt
Industry-leading efficiency and performance for fanless designs.
Compare head-to-head - AMD Ryzen 5 6600UAlt
Better iGPU and higher power for standard thin-and-lights.
More threads and higher clocks if you need slightly more power.
Compare head-to-headBudget alternative for basic tasks.
Compare head-to-head
Our Verdict on Each
An excellent low-power CPU for SFF builds, offering 10 cores and 16 threads that punch well above their 35W weight class.
Best for: The Core i5-13400T is highly recommended for builders creating small-form-factor PCs, home servers, or HTPCs. Its 35W TDP means it can be cooled almost silently with a low-profile cooler, and its 10 cores provide excellent parallel processing for NAS duties or multitasking. If you are building a mini-ITX system where thermals and noise are the primary constraints, the 13400T offers a superb balance of modern features and low power consumption without resorting to mobile parts.
Read the full reviewA highly efficient 9W processor that balances 10-core multitasking with extreme battery life, perfect for the most portable form factors.
Best for: Buying an ultra-thin 2-in-1 convertible or a fanless tablet for note-taking and travel.
Read the full reviewFrequently Asked Questions
Which is faster for gaming, Intel Core i5-13400T or Intel Core i5-1240U?
For gaming, the Intel Core i5-13400T leads with a gaming performance score of 55/100 among Intel Core i5-13400T and Intel Core i5-1240U.
Which uses less power?
The Intel Core i5-1240U has the lowest rated TDP. Power draw across these chips: Intel Core i5-13400T (35 W), Intel Core i5-1240U (9 W).
Do Intel Core i5-13400T and Intel Core i5-1240U use the same socket?
No. They use different sockets (Intel Core i5-13400T: LGA 1700, Intel Core i5-1240U: Intel BGA 1781), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Intel Core i5-13400T posts the highest multi-core benchmark score. Multi-core results: Intel Core i5-13400T (15,500). Benchmark figures are approximate and workload-dependent.