AMD Radeon HD 6850 vs NVIDIA RTX PRO 4000 Blackwell SFF
GPU · Specs Compare
Graphics Card
Release Date
Oct 2010
Aug 2025
Generation
Northern Islands
Blackwell PRO W
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 5.0 x8
Clock Speeds
Memory Clock
1000 MHz
1125 MHz
Base Clock
—
577 MHz
Boost Clock
—
1432 MHz
Memory
Memory Size
1024MB
24GB
Memory Type
GDDR5
GDDR7
Memory Bus
256bit
192bit
Bandwidth
128.0GB/s
432.0GB/s
Render Config
Compute Units
12
—
Shading Units
960
8960
TMUs
48
280
ROPs
32
96
L1 Cache
8 KB (per CU)
128 KB (per SM)
L2 Cache
512 KB
48 MB
SM Count
—
70
Tensor Cores
—
280
RT Cores
—
70
Theoretical Performance
Pixel Rate
24.80 GPixel/s
137.5 GPixel/s
Texture Rate
37.20 GTexel/s
401.0 GTexel/s
FP32 (float)
1488 GFLOPS
25.66 TFLOPS
FP16 (half)
—
25.66 TFLOPS
FP64 (double)
—
401.0 GFLOPS
Graphics Processor
GPU Name
Barts
GB203
GPU Variant
Barts PRO(215-0798006)
—
Architecture
TeraScale 2
Blackwell 2.0
Foundry
TSMC
TSMC
Process Size
40 nm
5 nm
Transistors
1.7 billion
45.6 billion
Die Size
255 mm²
378 mm²
Board Design
TDP
127W
70W
Suggested PSU
300 W
250 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
4x mini-DisplayPort 2.1b
Power Connectors
1x 6-pin
None
Graphics Features
DirectX
11.2 (11_0)
12 Ultimate (12_2)
OpenGL
4.4
4.6
OpenCL
1.2
3.0
Vulkan
N/A
1.4
Shader Model
5.0
6.8
CUDA
—
12.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.