AMD Radeon HD 6870 X2 vs NVIDIA GeForce RTX 4090 Mobile
GPU Specs Compare
Graphics Card
Release Date
Jul 2011
Jan 2023
Generation
Northern Islands
GeForce 40 Mobile
Type
Desktop
Mobile
Bus Interface
PCIe 2.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
1050 MHz
2250 MHz
Base Clock
-
1335 MHz
Boost Clock
-
1695 MHz
Memory
Memory Size
1024MB
16GB
Memory Type
GDDR5
GDDR6
Memory Bus
256bit
256bit
Bandwidth
134.4GB/s
576.0GB/s
Render Config
Compute Units
14
-
Shading Units
1120
9728
TMUs
56
304
ROPs
32
112
L1 Cache
8 KB (per CU)
128 KB (per SM)
L2 Cache
512 KB
64 MB
SM Count
-
76
Tensor Cores
-
304
RT Cores
-
76
Theoretical Performance
Pixel Rate
28.80 GPixel/s
189.8 GPixel/s
Texture Rate
50.40 GTexel/s
515.3 GTexel/s
FP32 (float)
2.016 TFLOPS
32.98 TFLOPS
FP16 (half)
-
32.98 TFLOPS
FP64 (double)
-
515.3 GFLOPS
Graphics Processor
GPU Name
Barts
AD103
GPU Variant
Barts XT(215-0798000)
GN21-X11
Architecture
TeraScale 2
Ada Lovelace
Foundry
TSMC
TSMC
Process Size
40 nm
5 nm
Transistors
1.7 billion
45.9 billion
Die Size
255 mm²
379 mm²
Board Design
TDP
300W
120W
Suggested PSU
700 W
-
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
Portable Device Dependent
Power Connectors
-
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
1.3
Shader Model
5.0
6.8
CUDA
-
8.9