How many watts does Radeon 660M use?
Short answer
Radeon 660M draws up to 200 W under gaming load — that is its rated TDP; short spikes can reach about 280 W. A build with a mid-range CPU needs a 550 W power supply or more. At 3 h of gaming a day the card uses ≈18 kWh a month (≈$ 3.06).
| TDP (rated, gaming) | — |
|---|---|
| Graphics card spikes (estimate) | up to 280 W |
| PSU with a mid-range CPU (105 W) | 550 W |
| FPS per watt (1440p, High) | 0.11 FPS/W |
| Electricity per month (3 h/day) | $ 3.06 (18 kWh) |
Looking for something else? What PSU 660M needs · How much gaming electricity costs
This model's TDP is not in our database — the calculation uses a typical 200 W.
What Radeon 660M costs to run per month
Graphics card only, per month:
$ 3.06
18 kWh
Calculation: 200 W (TDP under gaming load) × hours × 30 days × rate. Default rate is $ 0.17 per kWh; replace it with yours.
Power use and efficiency of Radeon 660M alternatives
| Graphics card | TDP | Difference | FPS (1440p) | FPS/W | PSU (mid-range CPU) | |
|---|---|---|---|---|---|---|
| Radeon 660M | 200 W | — | 22 | 0.11 | 550 W | |
| Radeon RX 550 | 50 W | -150 W | 23 | 0.46 | 400 W | Compare → |
| GeForce GTX 750 Ti | 60 W | -140 W | 24 | 0.4 | 400 W | Compare → |
FPS is the average across 8 popular games at 1440p High from the unified FPSHQ model (real measurements where available); FPS/W = FPS / TDP. How FPS is calculated
Key figures
Unique FPSHQ metrics from this page's data
—
TDP (rated, gaming)
up to 280 W
Graphics card spikes (estimate)
550 W
PSU with a mid-range CPU (105 W)
0.11 FPS/W
FPS per watt (1440p, High)
$ 3.06 (18 kWh)
Electricity per month (3 h/day)
In short
How many watts does Radeon 660M use?
In games — up to 200 W (rated TDP). Short spikes under load can reach ~280 W, which matters when choosing a power supply.
- TDP (rated, gaming)
- —
- Graphics card spikes (estimate)
- up to 280 W
- PSU with a mid-range CPU (105 W)
- 550 W
- FPS per watt (1440p, High)
- 0.11 FPS/W
Frequently asked questions
How many watts does Radeon 660M use?
In games — up to 200 W (rated TDP). Short spikes under load can reach ~280 W, which matters when choosing a power supply.
How much power does Radeon 660M use at idle?
Our database has no separate idle measurement for Radeon 660M. At idle and during video playback graphics cards use only a small fraction of their TDP (200 W), so your electricity bill mostly depends on gaming hours.
How much does electricity for Radeon 660M cost per month?
At 3 hours of gaming a day and a rate of $ 0.17 per kWh — about $ 3.06 a month for the graphics card alone (18 kWh). Recalculate for your hours and rate with the calculator on this page.
How many watts PSU does Radeon 660M need?
From 550 W for a build with a mid-range CPU: card TDP 200 W, short spikes up to ~280 W, plus the rest of the system and 30% headroom.
Which is more efficient: Radeon 660M or Radeon RX 550?
By spec Radeon 660M draws 200 W and Radeon RX 550 draws 50 W. Efficiency by the unified FPSHQ model: 0.11 vs 0.46 FPS per watt (1440p, High, popular games).