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