AMD Radeon Pro V620 vs AMD Radeon HD 8990 OEM
GPU · Specs Compare
Graphics Card
Release Date
Nov 2021
Apr 2013
Generation
Radeon Pro
Sea Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1825 MHz
950 MHz
Boost Clock
2200 MHz
1000 MHz
Memory Clock
2000 MHz
1500 MHz
Memory
Memory Size
32GB
3GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
384bit
Bandwidth
512.0GB/s
288.0GB/s
Render Config
Compute Units
72
32
Shading Units
4608
2048
TMUs
288
128
ROPs
128
32
RT Cores
72
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
768 KB
L3 Cache
128 MB
—
Theoretical Performance
Pixel Rate
281.6 GPixel/s
32.00 GPixel/s
Texture Rate
633.6 GTexel/s
128.0 GTexel/s
FP16 (half)
40.55 TFLOPS
—
FP32 (float)
20.28 TFLOPS
4.096 TFLOPS
FP64 (double)
1267 GFLOPS
1024 GFLOPS
Graphics Processor
GPU Name
Navi 21
Malta
GPU Variant
Navi 21 XT(215-121000177)
Malta XT(215-0849026)
Architecture
RDNA 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
26.8 billion
4.313 billion
Die Size
520 mm²
365 mm²
Board Design
TDP
300W
375W
Suggested PSU
700 W
750 W
Outputs
No outputs
1x DVI4x mini-DisplayPort 1.2
Power Connectors
2x 8-pin
2x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.1
1.2
Vulkan
1.3
1.2
Shader Model
6.5
5.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.