CPU Comparison
Intel Core i5-2500T vs Intel Core i5-2405S
A side-by-side comparison of specs, performance and value. The Intel Core i5-2500T is a low-power quad-core desktop processor from the Sandy Bridge generation, featuring a 45 W TDP designed for slim form factor PCs and all-in-one systems.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Can handle legacy office applications but will struggle with modern web apps and multitasking.
CPU performance is identical to the i5-2400S, adequate for legacy apps.
Gaming
Intel HD 2000 graphics are completely insufficient for any modern 3D gaming.
HD 3000 can handle very old games, but nothing modern.
Virtualization
VT-d and VT-x support are present, but four threads limit practical virtual machine usage.
VM performance is constrained by the 4-thread limit.
Efficiency
Impressive efficiency for a 2011 quad-core desktop chip, though modern chips are far more efficient.
Excellent power metrics for a quad-core chip of its era.
Specialized Performance
AI / ML
- No AI acceleration hardware
- Lacks AVX2 and modern matrix math instructions
- Completely unsuitable for AI workloads
- No AI acceleration capabilities
Content Creation
Gaming
- Intel HD 2000 cannot handle modern game engines
- Suitable only for 2D games or pre-2010 titles at low resolutions
- Thermal constraints prevent sustained high performance
- HD 3000 is noticeably faster than HD 2000 in legacy titles
- Still lacks DirectX 12 support
- Not viable for 3D gaming past 2012 standards
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Very low 45 W power draw for a quad-core desktop CPU
- Retained full enterprise feature set (VT-d, TXT)
- Capable of 3.3 GHz turbo for bursty workloads
- Allowed quad-core performance in slim chassis designs
- AES-NI hardware encryption support
Cons
- Low base clock of 2.3 GHz limits sustained multi-core performance
- Intel HD 2000 graphics are extremely weak
- No Hyper-Threading
- Locked multiplier
- Completely obsolete for modern computing
Pros
- Intel HD 3000 integrated graphics
- Quick Sync Video support
- Low 65W power draw
- Full 6 MB L3 cache
Cons
- Rare and potentially expensive on the used market
- No Hyper-Threading
- Lower clocks than standard 95W parts
- Lacks AVX2
- Not Windows 11 compatible
Competitors & Alternatives
Intel Core i5-2500T
- AMD Phenom II X4 910eRival
Low Power Desktop
- AMD A8-3850Rival
Desktop APU
- Compare head-to-headIntel Core i5-2400SRival
Low Power Desktop
- AMD A6-3650Rival
Budget Desktop
- Intel Core i3-2100TRival
Low Power Dual-Core
If the chassis can handle 65 W, the 2500S offers much better sustained multi-core performance.
Compare head-to-headIvy Bridge successor offering better integrated graphics and slightly better efficiency.
Compare head-to-head
Intel Core i5-2405S
- AMD A8-3850Rival
Desktop APU
- AMD A6-3670Rival
Desktop APU
- Compare head-to-headIntel Core i5-2400SRival
Desktop
- Intel Core i3-2125Rival
Desktop
- AMD Phenom II X4 860TRival
Desktop
Better CPU clocks and better graphics within the same 65W TDP.
Compare head-to-head- AMD A10-5700Alt
Newer APU platform with significantly better graphics.
- Intel Core i7-2600SAlt
Adds Hyper-Threading for better multi-tasking.
- Intel Xeon E3-1245Alt
Similar HD 3000 graphics but in an 80W standard-power package.
Our Verdict on Each
An interesting engineering exercise for its time that brought quad cores to low-profile chassis, but thoroughly obsolete by modern standards.
Best for: Replacing a failed CPU in a legacy all-in-one PC with proprietary BIOS whitelist restrictions.
Read the full reviewA niche OEM processor that offered better integrated graphics in a low-power package, now mostly useful for exact-match legacy repairs.
Best for: Replacing a failed CPU in a 2011 Apple iMac or premium AIO
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-2500T or Intel Core i5-2405S?
Based on our editorial ratings, the Intel Core i5-2405S comes out ahead with a score of 4.5/10. 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 i5-2500T or Intel Core i5-2405S?
For gaming, the Intel Core i5-2405S leads with a gaming performance score of 18/100 among Intel Core i5-2500T and Intel Core i5-2405S.
Which uses less power?
The Intel Core i5-2500T has the lowest rated TDP. Power draw across these chips: Intel Core i5-2500T (45 W), Intel Core i5-2405S (65 W).
Do Intel Core i5-2500T and Intel Core i5-2405S use the same socket?
Yes — all of these CPUs use the LGA 1155 socket, so they share compatible motherboards.
Which is faster in multi-core benchmarks?
The Intel Core i5-2500T posts the highest multi-core benchmark score. Multi-core results: Intel Core i5-2500T (3,000), Intel Core i5-2405S (2,400). Benchmark figures are approximate and workload-dependent.