The Radeon HD 7990 is a much slower gaming GPU than the Radeon RX 6400. We cannot compare value as at least one GPU is out of stock.
Advantages of the Radeon HD 7990
The Radeon RX 6400 is better in every way
Advantages of the Radeon RX 6400
- At least 2x faster GPU for gaming
- Consumes up to 86% less energy – 53 vs 375 Watts
- Up to 33% more VRAM memory – 4 vs 3 GB
Radeon HD 7990 vs Radeon RX 6400 for Gaming
The GPU's performance in selected game and settings
Radeon HD 7990
Apr 24th, 2013
Average FPS
55
86%
Min 1% FPS
25
81%
Price, $
Out of Stock
Value, $/FPS
Not Available
All items are out of stock.
Radeon RX 6400
Jan 19th, 2022
Average FPS
64
100%
Min 1% FPS
31
100%
Price, $
$271.75
100%
Value, $/FPS
$4.24/FPS
100%
Buy on Amazon
$271.75
In Stock
Buy on Amazon
$207.09
In Stock
Buy on Amazon
$362.00
In Stock
Buy on Amazon
N/A
Out of Stock
Buy on Amazon
N/A
Out of Stock
Buy on Amazon
N/A
Out of Stock
Radeon HD 7990 vs Radeon RX 6400 in My Games
The FPS you'll get in saved games, click on a game to change it
The FPS you'll get in saved games, click on a game to change it
Add a Game
Select Settings
Synthetic Benchmarks
The Radeon HD 7990 vs Radeon RX 6400 in synthetic GPU benchmarks
Performance Specifications
The Radeon HD 7990 vs Radeon RX 6400 in core GPU performance specifications
Radeon HD 7990
Apr 24th, 2013
Memory
3 GB
75%
Memory Bandwidth
288 GB/s
100%
Pixel Fillrate
32 GPixel/s
43%
Texture Fillrate
128 GTexel/s
100%
FP32
4.096 TFLOPS
100%
Radeon RX 6400
Jan 19th, 2022
Memory
4 GB
100%
Memory Bandwidth
128 GB/s
44%
Pixel Fillrate
74.27 GPixel/s
100%
Texture Fillrate
111.4 GTexel/s
87%
FP32
3.565 TFLOPS
87%
Specifications
Comparison of all specifications
Radeon HD 7990 | SpecificationsComparison of all specifications | Radeon RX 6400 |
|---|---|---|
| General | ||
| Apr 24th, 2013 | Release Date | Jan 19th, 2022 |
| $999.00 | MSRP | $159.00 |
| Southern Islands | Generation | Navi II |
Desktop | Segment | Desktop |
| 375 W | Power Consumption | 53 W |
| Memory | ||
| 3 GB | Memory Size | 4 GB |
| GDDR5 | Memory Type | GDDR6 |
| 384-bit | Memory Bus | 64-bit |
288 GB/s | Bandwidth | 128 GB/s |
| Theoretical Performance | ||
| 32 GPixel/s | Pixel Fillrate | 74.27 GPixel/s |
128 GTexel/s | Texture Fillrate | 111.4 GTexel/s |
4.096 TFLOPS | FP32 | 3.565 TFLOPS |
