Key Differences
In short — Radeon RX 6600M outperforms Radeon R9 390X on the selected game parameters. We do not have the prices of both CPUs to compare value. The better performing Radeon RX 6600M is 2174 days newer than Radeon R9 390X.
Advantages of AMD Radeon RX 6600M
- Performs up to 181% better in Forza Horizon 5 than Radeon R9 390X - 45 vs 16 FPS
- Consumes up to 64% less energy than AMD Radeon R9 390X - 100 vs 275 Watts
Forza Horizon 5
Resolution
1920 x 1080
Game Graphics
Max
TOP 5 Games
Resolution
1920 x 1080
Game Graphics
Max
Radeon R9 390X
Desktop • Jun 18th, 2015
Radeon RX 6600M
Mobile • May 31st, 2021
Theoretical Performance
Radeon R9 390X
Desktop • Jun 18th, 2015
Pixel Fillrate
67.2 GPixel/s
43%
Texel Fillrate
184.8 GTexel/s
68%
Radeon RX 6600M
Mobile • May 31st, 2021
Pixel Fillrate
154.6 GPixel/s
100%
Texel Fillrate
270.6 GTexel/s
100%
AMD Radeon R9 390X | vs | AMD Radeon RX 6600M |
|---|---|---|
| Jun 18th, 2015 | Release Date | May 31st, 2021 |
| Pirate Islands | Generation | Navi Mobile |
| $429 | MSRP | Not Available |
| 2x DVI, 1x HDMI, 1x DisplayPort | Outputs | Portable Device Dependent |
| 1x 6-pin + 1x 8-pin | Power Connectors | None |
Desktop | Segment | Mobile |
| 8 GB | Memory | 8 GB |
| GDDR5 | Type | GDDR6 |
| 512-bit | Bus | 128-bit |
384 GB/s | Bandwidth | 224 GB/s |
| 1050 MHz | Base Clock Speed | 2068 MHz |
| Not Available | Boost Clock Speed | 2416 MHz |
| 1500 MHz | Memory Clock Speed | 1750 MHz |
