Performance comparison: which is faster?
Core i5-660 (Intel, 2010) and Pentium G3258 (Intel, 2014) 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: i5-660 is about 3.1% faster
The sockets differ (LGA1156 / LGA1150), 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 | i5-660 | Pentium G3258 |
|---|---|---|
| Performance Score | 3,300 | 3,200 |
| Generation | 1st Gen | Pentium |
| Socket | LGA1156 | LGA1150 |
| Release Year | 2010 | 2014 |
| Type | Desktop | Desktop |
| Compatible GPU Example | Radeon HD 7850 | Radeon HD 7850 |
| If You Want To... | Recommended |
|---|---|
| Prioritize maximum speed for heavy work or a high-end GPU | i5-660 |
| Upgrade while reusing the current motherboard | Choose the CPU matching your motherboard socket |
| Prioritize value and adequate performance | Pentium G3258 (the lower model is often sufficient) |
i5-660 is about 3.1% higher by score (i5-660: 3300 points / Pentium G3258: 3200 points). For gaming, the GPU tier usually matters more than a few percent of CPU difference. For CPU-heavy work such as video editing and streaming, choose the faster CPU.
i5-660 is 1st Gen, while Pentium G3258 is Pentium.The sockets differ (LGA1156 / LGA1150), so switching requires a motherboard replacement.
Using our CPU:GPU = 0.9:1 guideline, Radeon HD 7850 pairs well with i5-660 and Radeon HD 7850 pairs well with Pentium G3258. If either GPU is too strong or too weak, one part holds the other back.
