NVIDIA RTX PRO 4000 Blackwell vs AMD Radeon HD 6870
GPU · Specs Compare
Graphics Card
Release Date
Mar 2025
Oct 2010
Generation
Blackwell PRO W
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 2.0 x16
Clock Speeds
Base Clock
1230 MHz
—
Boost Clock
2055 MHz
—
Memory Clock
1750 MHz
1050 MHz
Memory
Memory Size
24GB
1024MB
Memory Type
GDDR7
GDDR5
Memory Bus
192bit
256bit
Bandwidth
672.0GB/s
134.4GB/s
Render Config
SM Count
70
—
Shading Units
8960
1120
TMUs
280
56
ROPs
96
32
Tensor Cores
280
—
RT Cores
70
—
L1 Cache
128 KB (per SM)
8 KB (per CU)
L2 Cache
48 MB
512 KB
Compute Units
—
14
Theoretical Performance
Pixel Rate
197.3 GPixel/s
28.80 GPixel/s
Texture Rate
575.4 GTexel/s
50.40 GTexel/s
FP16 (half)
36.83 TFLOPS
—
FP32 (float)
36.83 TFLOPS
2.016 TFLOPS
FP64 (double)
575.4 GFLOPS
—
Graphics Processor
GPU Name
GB203
Barts
Architecture
Blackwell 2.0
TeraScale 2
Foundry
TSMC
TSMC
Process Size
5 nm
40 nm
Transistors
45.6 billion
1.7 billion
Die Size
378 mm²
255 mm²
GPU Variant
—
Barts XT(215-0798000)
Board Design
TDP
140W
151W
Suggested PSU
300 W
450 W
Outputs
4x DisplayPort 2.1b
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
Power Connectors
1x 16-pin
2x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
3.0
1.2
Vulkan
1.4
N/A
CUDA
12.0
—
Shader Model
6.8
5.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.