Performance comparison: which is faster?
Celeron G5905 (Intel, 2021) and Core 2 Extreme QX9775 (Intel, 2008) 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 (LGA1200 / LGA775), 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 | Celeron G5905 | 2 Extreme QX9775 |
|---|---|---|
| Performance Score | 3,800 | 3,800 |
| Generation | Celeron | Core 2 |
| Socket | LGA1200 | LGA775 |
| Release Year | 2021 | 2008 |
| Type | Desktop | Desktop |
| Compatible GPU Example | GeForce GTX 950 | GeForce GTX 950 |
| If You Want To... | Recommended |
|---|---|
| Prioritize maximum speed for heavy work or a high-end GPU | Celeron G5905 |
| Upgrade while reusing the current motherboard | Choose the CPU matching your motherboard socket |
| Prioritize value and adequate performance | Celeron G5905 (the lower model is often sufficient) |
Their scores are nearly identical (Celeron G5905: 3800 points / 2 Extreme QX9775: 3800 points). Choose the less expensive option or the one that fits your current motherboard.
Celeron G5905 is Celeron, while 2 Extreme QX9775 is Core 2.The sockets differ (LGA1200 / LGA775), so switching requires a motherboard replacement.
Using our CPU:GPU = 0.9:1 guideline, GeForce GTX 950 pairs well with Celeron G5905 and GeForce GTX 950 pairs well with 2 Extreme QX9775. If either GPU is too strong or too weak, one part holds the other back.
