AMD Radeon RX 7700 vs AMD Radeon R9 390
GPU Specs Compare
Graphics Card
Release Date
Sep 2025
Jun 2015
Generation
Navi III
Pirate Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1900 MHz
-
Boost Clock
2600 MHz
-
Memory Clock
2430 MHz
1500 MHz
Memory
Memory Size
16GB
8GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
512bit
Bandwidth
622.1GB/s
384.0GB/s
Render Config
Compute Units
40
40
Shading Units
2560
2560
TMUs
160
160
ROPs
96
64
RT Cores
40
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
1024 KB
L3 Cache
64 MB
-
Theoretical Performance
Pixel Rate
249.6 GPixel/s
64.00 GPixel/s
Texture Rate
416.0 GTexel/s
160.0 GTexel/s
FP16 (half)
53.25 TFLOPS
-
FP32 (float)
26.62 TFLOPS
5.120 TFLOPS
FP64 (double)
832.0 GFLOPS
640.0 GFLOPS
Graphics Processor
GPU Name
Navi 32
Grenada
GPU Variant
Navi 32
Grenada PRO(215-0880030)
Architecture
RDNA 3.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
28.1 billion
6.2 billion
Die Size
346 mm²
438 mm²
Board Design
TDP
200W
275W
Suggested PSU
550 W
600 W
Outputs
1x HDMI 2.1a2x DisplayPort 2.11x USB Type-C
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 8-pin
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.2
2.0
Vulkan
1.3
1.2
Shader Model
6.8
6.3
📊 Benchmark
3DMark Time Spy
-
3,964
3DMark Time Spy Extreme
-
1,931