AMD Radeon RX 6800 3456SP vs NVIDIA RTX PRO 4000 Blackwell
GPU · Specs Compare
Graphics Card
Release Date
Unknown
Mar 2025
Generation
Navi II
Blackwell PRO W
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1700 MHz
1230 MHz
Boost Clock
2250 MHz
2055 MHz
Memory Clock
2000 MHz
1750 MHz
Memory
Memory Size
16GB
24GB
Memory Type
GDDR6
GDDR7
Memory Bus
256bit
192bit
Bandwidth
512.0GB/s
672.0GB/s
Render Config
Compute Units
54
—
Shading Units
3456
8960
TMUs
216
280
ROPs
96
96
RT Cores
54
70
L1 Cache
128 KB per Array
128 KB (per SM)
L2 Cache
4 MB
48 MB
L3 Cache
128 MB
—
SM Count
—
70
Tensor Cores
—
280
Theoretical Performance
Pixel Rate
216.0 GPixel/s
197.3 GPixel/s
Texture Rate
486.0 GTexel/s
575.4 GTexel/s
FP16 (half)
31.10 TFLOPS
36.83 TFLOPS
FP32 (float)
15.55 TFLOPS
36.83 TFLOPS
FP64 (double)
972.0 GFLOPS
575.4 GFLOPS
Graphics Processor
GPU Name
Navi 21
GB203
GPU Variant
Navi 21 ES(215-121000066)
—
Architecture
RDNA 2.0
Blackwell 2.0
Foundry
TSMC
TSMC
Process Size
7 nm
5 nm
Transistors
26.8 billion
45.6 billion
Die Size
520 mm²
378 mm²
Board Design
TDP
250W
140W
Suggested PSU
600 W
300 W
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
4x DisplayPort 2.1b
Power Connectors
2x 8-pin
1x 16-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.3
1.4
Shader Model
6.8
6.8
CUDA
—
12.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.