AMD Radeon HD 8870 OEM vs NVIDIA RTX A4500 Mobile
GPU · Specs Compare
Graphics Card
Release Date
Jan 2013
Mar 2022
Generation
Sea Islands
Quadro Ampere-M
Type
Desktop
Professional
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
1200 MHz
2000 MHz
Base Clock
—
930 MHz
Boost Clock
—
1500 MHz
Memory
Memory Size
2GB
16GB
Memory Type
GDDR5
GDDR6
Memory Bus
256bit
256bit
Bandwidth
153.6GB/s
512.0GB/s
Render Config
Compute Units
20
—
Shading Units
1280
5888
TMUs
80
184
ROPs
32
96
L1 Cache
16 KB (per CU)
128 KB (per SM)
L2 Cache
512 KB
4 MB
SM Count
—
46
Tensor Cores
—
184
RT Cores
—
46
Theoretical Performance
Pixel Rate
32.00 GPixel/s
144.0 GPixel/s
Texture Rate
80.00 GTexel/s
276.0 GTexel/s
FP32 (float)
2.560 TFLOPS
17.66 TFLOPS
FP64 (double)
160.0 GFLOPS
276.0 GFLOPS
FP16 (half)
—
17.66 TFLOPS
Graphics Processor
GPU Name
Pitcairn
GA104
GPU Variant
Pitcairn XT(215-0828047)
—
Architecture
GCN 1.0
Ampere
Foundry
TSMC
Samsung
Process Size
28 nm
8 nm
Transistors
2.8 billion
17.4 billion
Die Size
212 mm²
392 mm²
Board Design
TDP
175W
140W
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
▲ Specs Compare
Data sourced from official specifications and benchmark tests.