How many watts does XFX Speedster MERC Radeon RX 7700 XT use?
Short answer
XFX Speedster MERC Radeon RX 7700 XT draws up to 245 W under gaming load — that is its rated TDP; short spikes can reach about 343 W. A build with a mid-range CPU needs a 600 W power supply or more. At 3 h of gaming a day the card uses ≈22.1 kWh a month (≈$ 3.76).
| TDP (rated, gaming) | 245 W |
|---|---|
| Graphics card spikes (estimate) | up to 343 W |
| PSU with a mid-range CPU (105 W) | 600 W |
| FPS per watt (1440p, High) | 0.76 FPS/W |
| Electricity per month (3 h/day) | $ 3.76 (22.1 kWh) |
Looking for something else? What PSU XFX Speedster MERC Radeon RX 7700 XT needs · How much gaming electricity costs
What XFX Speedster MERC Radeon RX 7700 XT costs to run per month
Graphics card only, per month:
$ 3.76
22.1 kWh
Calculation: 245 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 XFX Speedster MERC Radeon RX 7700 XT alternatives
| Graphics card | TDP | Difference | FPS (1440p) | FPS/W | PSU (mid-range CPU) | |
|---|---|---|---|---|---|---|
| XFX Speedster MERC Radeon RX 7700 XT | 245 W | — | 185 | 0.76 | 600 W | |
| NVIDIA RTX A5000 | 218 W | -27 W | 193 | 0.89 | 550 W | Compare → |
| GeForce RTX 5060 Ti | 180 W | -65 W | 184 | 1.02 | 500 W | Compare → |
| Radeon RX 6800 XT | 300 W | +55 W | 179 | 0.6 | 650 W | Compare → |
| Radeon RX 7700 XT | 245 W | 0 W | 179 | 0.73 | 600 W | Compare → |
| Radeon RX 6800 | 250 W | +5 W | 184 | 0.74 | 600 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
245 W
TDP (rated, gaming)
up to 343 W
Graphics card spikes (estimate)
600 W
PSU with a mid-range CPU (105 W)
0.76 FPS/W
FPS per watt (1440p, High)
$ 3.76 (22.1 kWh)
Electricity per month (3 h/day)
In short
How many watts does XFX Speedster MERC Radeon RX 7700 XT use?
In games — up to 245 W (rated TDP). Short spikes under load can reach ~343 W, which matters when choosing a power supply.
- TDP (rated, gaming)
- 245 W
- Graphics card spikes (estimate)
- up to 343 W
- PSU with a mid-range CPU (105 W)
- 600 W
- FPS per watt (1440p, High)
- 0.76 FPS/W
Frequently asked questions
How many watts does XFX Speedster MERC Radeon RX 7700 XT use?
In games — up to 245 W (rated TDP). Short spikes under load can reach ~343 W, which matters when choosing a power supply.
How much power does XFX Speedster MERC Radeon RX 7700 XT use at idle?
Our database has no separate idle measurement for XFX Speedster MERC Radeon RX 7700 XT. At idle and during video playback graphics cards use only a small fraction of their TDP (245 W), so your electricity bill mostly depends on gaming hours.
How much does electricity for XFX Speedster MERC Radeon RX 7700 XT cost per month?
At 3 hours of gaming a day and a rate of $ 0.17 per kWh — about $ 3.76 a month for the graphics card alone (22.1 kWh). Recalculate for your hours and rate with the calculator on this page.
How many watts PSU does XFX Speedster MERC Radeon RX 7700 XT need?
From 600 W for a build with a mid-range CPU: card TDP 245 W, short spikes up to ~343 W, plus the rest of the system and 30% headroom.
Which is more efficient: XFX Speedster MERC Radeon RX 7700 XT or NVIDIA RTX A5000?
By spec XFX Speedster MERC Radeon RX 7700 XT draws 245 W and NVIDIA RTX A5000 draws 218 W. Efficiency by the unified FPSHQ model: 0.76 vs 0.89 FPS per watt (1440p, High, popular games).
⚡ What PSU for XFX Speedster MERC Radeon RX 7700 XT
🧩 What CPU do I need for XFX Speedster MERC Radeon RX 7700 XT?
📊 XFX Speedster MERC Radeon RX 7700 XT specs