AMD Radeon HD 7870 GHz Edition vs NVIDIA RTX A4 Mobile
GPU Specs Compare
Graphics Card
Release Date
Mar 2012
Apr 2021
Generation
Southern Islands
Quadro Ampere-M
Type
Desktop
Professional
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x8
Clock Speeds
Memory Clock
1200 MHz
1750 MHz
Base Clock
-
1297 MHz
Boost Clock
-
1770 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR6
Memory Bus
256bit
128bit
Bandwidth
153.6GB/s
224.0GB/s
Render Config
Compute Units
20
-
Shading Units
1280
2048
TMUs
80
64
ROPs
32
32
L1 Cache
16 KB (per CU)
128 KB (per SM)
L2 Cache
512 KB
2 MB
SM Count
-
16
Tensor Cores
-
64
RT Cores
-
16
Theoretical Performance
Pixel Rate
32.00 GPixel/s
56.64 GPixel/s
Texture Rate
80.00 GTexel/s
113.3 GTexel/s
FP32 (float)
2.560 TFLOPS
7.250 TFLOPS
FP64 (double)
160.0 GFLOPS
113.3 GFLOPS
FP16 (half)
-
7.250 TFLOPS
Graphics Processor
GPU Name
Pitcairn
GA107
GPU Variant
Pitcairn XT(215-0828047)
-
Architecture
GCN 1.0
Ampere
Foundry
TSMC
Samsung
Process Size
28 nm
8 nm
Transistors
2.8 billion
8.7 billion
Die Size
212 mm²
200 mm²
Board Design
TDP
175W
Unknown
Suggested PSU
450 W
-
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Portable Device Dependent
Power Connectors
2x 6-pin
None
Graphics Features
DirectX
12 (11_1)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
1.2
3.0
Vulkan
1.2
1.3
Shader Model
5.1
6.7
CUDA
-
8.6