Intel Core i5-7400T vs Intel Core i7-3770T Comparison

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core i5-7400T has a higher average benchmark score of 1348, compared to 1314 for the Intel Core i7-3770T. This places the i5-7400T in the 36th percentile while the i7-3770T sits in the 35th percentile.

Q: How many wins does each CPU have in the head-to-head comparison?

A: The Intel Core i7-3770T takes 6 wins, while the Intel Core i5-7400T takes 2 wins. The older i7 dominates all Cinebench tests, but the i5 wins both Geekbench tests.

Q: What is the largest performance gap between the two in the head-to-head tests?

A: The largest gap is in Geekbench single-core, where the i5-7400T scores 1014 versus 592 for the i7-3770T, a delta of 41.6% in favor of the i5.

Q: Which processor uses DDR4 memory?

A: The Intel Core i5-7400T supports DDR4, while the Intel Core i7-3770T supports DDR3. Both use a dual-channel memory bus.

Q: How do the TDP ratings differ between the two?

A: The Intel Core i7-3770T has a TDP of 45 W, while the Intel Core i5-7400T has a TDP of 35 W. The i5 is the more power-efficient part.

Q: Which CPU has more threads?

A: The Intel Core i7-3770T has 8 threads, while the Intel Core i5-7400T has 4 threads. Both have 4 cores, but the i7 supports Hyper-Threading.

Architecture Differences

The Intel Core i7-3770T is built on the Ivy Bridge architecture, using a 22 nm process node. The Intel Core i5-7400T is based on the newer Kaby Lake architecture, manufactured on a 14 nm process node. Both are desktop parts from Intel, but they belong to different generations.

The i7-3770T integrates 1,400 million transistors on a 160 mm² die. The i5-7400T does not have recorded transistor or die size figures in the database. The i7 uses the Intel Socket 1155, while the i5 uses the Intel Socket 1151, meaning they are not interchangeable in a motherboard.

Cache structure shows a shared 8 MB L3 for the i7-3770T, versus 6 MB shared L3 for the i5-7400T. Both have per-core L1 cache of 64 KB and per-core L2 cache of 256 KB.

Memory support is a clear split: the i7-3770T accepts DDR3, while the i5-7400T accepts DDR4. The i5 has a recorded memory bandwidth of 38.4 GB/s; the i7 has no bandwidth figure listed. Both run dual-channel memory.

Neither CPU supports ECC memory, and both have a locked multiplier. Each processor provides PCIe Gen 3 with 16 lanes from the CPU. Integrated graphics differ: the i7-3770T has Intel HD 4000, while the i5-7400T has HD 630.

The i7-3770T was released in 2012, while the i5-7400T was released in 2017. The i5-7400T has an "Active" production status, while the i7's production status is not specified. The part numbers are SR0PQ for the i7 and SR332 for the i5.

The Verdict

The recorded data shows two distinct strengths. The Intel Core i7-3770T wins 6 of 8 head-to-head benchmarks, all of them Cinebench tests. It leads by 15.7% to 16.1% across R15, R20, and R23, in both single-core and multi-core. The i7-3770T is a stronger rendering processor, likely due to its 8 threads versus 4.

The Intel Core i5-7400T wins the two Geekbench tests decisively. It scores 41.6% higher in single-core and 33.1% higher in multi-core. The i5 also has a higher average benchmark score (1348 versus 1314) and a slightly better percentile rank (36th versus 35th).

For users running Cinebench-style workloads (rendering, 3D modeling), the i7-3770T is the clear pick. For broader system tasks or Geekbench-style integer and floating point workloads, the i5-7400T holds the edge. The i5 also uses less power (35 W versus 45 W) and supports DDR4, which is newer memory.

The i7 is locked to DDR3 and Socket 1155, making it a legacy platform. The i5 is on Socket 1151 with active production status, indicating more relevance for current systems. However, the i7's thread advantage cannot be ignored in multi-threaded render tests.

Specification Differences

The two CPUs differ in several recorded specifications:

• Base clock: 2.50 GHz (i7-3770T) versus 2.40 GHz (i5-7400T)
• Boost clock: 3.70 GHz (i7-3770T) versus 3.00 GHz (i5-7400T)
• Threads: 8 (i7-3770T) versus 4 (i5-7400T)
• TDP: 45 W (i7-3770T) versus 35 W (i5-7400T)
• Socket: Intel Socket 1155 (i7-3770T) versus Intel Socket 1151 (i5-7400T)
• Architecture: Ivy Bridge (i7-3770T) versus Kaby Lake (i5-7400T)
• Process node: 22 nm (i7-3770T) versus 14 nm (i5-7400T)
• Transistors: 1,400 million (i7-3770T) versus not recorded (i5-7400T)
• Die size: 160 mm² (i7-3770T) versus not recorded (i5-7400T)
• L3 cache: 8 MB shared (i7-3770T) versus 6 MB shared (i5-7400T)
• Memory support: DDR3 (i7-3770T) versus DDR4 (i5-7400T)
• Memory bandwidth: not recorded (i7-3770T) versus 38.4 GB/s (i5-7400T)
• Integrated graphics: Intel HD 4000 (i7-3770T) versus HD 630 (i5-7400T)
• Release date: 2012 (i7-3770T) versus 2017 (i5-7400T)
• Production status: not specified (i7-3770T) versus Active (i5-7400T)
• Part number: SR0PQ (i7-3770T) versus SR332 (i5-7400T)

Both have 4 cores, dual-channel memory, no ECC, no unlocked multiplier, and PCIe Gen 3 with 16 lanes.

Head-to-Head Benchmarks

The head-to-head data reveals a split pattern. The Intel Core i7-3770T leads in every Cinebench test. In Cinebench R15 multi-core, the i7 scores 464 against 401 for the i5, a 15.7% advantage. In R15 single-core, the i7 scores 65 versus 56, a 16.1% lead.

The trend continues in Cinebench R20. Multi-core shows 1936 for the i7 and 1672 for the i5, a 15.8% difference. Single-core shows 273 versus 236, also a 15.7% gap. In Cinebench R23, the i7 scores 4611 versus 3981 in multi-core (15.8% lead), and 651 versus 562 in single-core (15.8% lead).

The Intel Core i5-7400T wins both Geekbench tests. In multi-core, the i5 scores 2864 against 1916 for the i7, a 33.1% lead. In single-core, the i5 scores 1014 versus 592, a 41.6% lead. These are the largest margins in the entire comparison.

The Geekbench results are notable because the i5 has fewer threads but still wins by a wide margin in multi-core. This suggests the i5's architecture is more efficient per thread in that workload. The i7's higher boost clock (3.70 GHz versus 3.00 GHz) does not help in Geekbench, but it does in Cinebench.

The i7-3770T edges out the i5-7400T on average score? No, the i5 has a higher average. The i5-7400T averages 1348, close to its nearest rivals: the Intel Core i5-4670 (1347, 0% delta) and the Intel Xeon W-2104 (1350, -0.1%). The i7-3770T averages 1314, near the AMD Athlon Gold 7220U (1311, 0.2% delta) and the Intel Core i5-4570R (1318, -0.3% delta).

In total, the i7 wins 6 of 8 tests, but the i5 wins the two most lopsided tests. The 41.6% single-core Geekbench gap is the largest delta recorded. The i7's closest rivals in the database are all within 0.5% of its average score, showing it sits in a tight cluster. The i5's closest rivals are similarly close, with the largest delta being 0.6% from the Intel Core i5-4590T.

The i7's Cinebench scores are consistently higher by 15.6% or more, indicating strong thread utilization. The i5's Geekbench scores are higher by a much larger margin, suggesting a different workload signature. The benchmark results indicate that on Cinebench, the i7-3770T is the stronger part, while on Geekbench, the i5-7400T is clearly superior.