Performance comparison: which is faster?
Core i3-7100 (Intel, 2017) and Core i5-3450 (Intel, 2012) are compared here. Compare not only scores, but also whether the motherboard can be reused and which GPU class is balanced with each CPU.
Overall performance: nearly equal
The sockets differ (LGA1151 / LGA1155), so switching requires a motherboard replacement. For games, performance balance with the GPU (guideline CPU:GPU = 0.9:1) matters more than CPU speed alone.
Relative performance score (higher is faster). Actual speed varies by workload, cooling, and memory configuration.
| Item | i3-7100 | i5-3450 |
|---|---|---|
| Performance Score | 5,500 | 5,500 |
| Generation | 7th Gen | 3rd Gen |
| Socket | LGA1151 | LGA1155 |
| Release Year | 2017 | 2012 |
| Type | Desktop | Desktop |
| Compatible GPU Example | Radeon RX 470 | Radeon RX 470 |
| If You Want To... | Recommended |
|---|---|
| Prioritize maximum speed for heavy work or a high-end GPU | i3-7100 |
| Upgrade while reusing the current motherboard | Choose the CPU matching your motherboard socket |
| Prioritize value and adequate performance | i3-7100 (the lower model is often sufficient) |
Their scores are nearly identical (i3-7100: 5500 points / i5-3450: 5500 points). Choose the less expensive option or the one that fits your current motherboard.
i3-7100 is 7th Gen, while i5-3450 is 3rd Gen.The sockets differ (LGA1151 / LGA1155), so switching requires a motherboard replacement.
Using our CPU:GPU = 0.9:1 guideline, Radeon RX 470 pairs well with i3-7100 and Radeon RX 470 pairs well with i5-3450. If either GPU is too strong or too weak, one part holds the other back.
