AMD Radeon Instinct MI8 vs AMD Radeon RX 6800
GPU · Specs Compare
Graphics Card
Release Date
Dec 2016
Oct 2020
Generation
Radeon Instinct
Navi II
Type
Professional
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
500 MHz
2000 MHz
Base Clock
—
1700 MHz
Boost Clock
—
2105 MHz
Memory
Memory Size
4GB
16GB
Memory Type
HBM
GDDR6
Memory Bus
4096bit
256bit
Bandwidth
512.0GB/s
512.0GB/s
Render Config
Compute Units
64
60
Shading Units
4096
3840
TMUs
256
240
ROPs
64
96
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
2 MB
4 MB
RT Cores
—
60
L3 Cache
—
128 MB
Theoretical Performance
Pixel Rate
64.00 GPixel/s
202.1 GPixel/s
Texture Rate
256.0 GTexel/s
505.2 GTexel/s
FP16 (half)
8.192 TFLOPS
32.33 TFLOPS
FP32 (float)
8.192 TFLOPS
16.17 TFLOPS
FP64 (double)
512.0 GFLOPS
1010 GFLOPS
Graphics Processor
GPU Name
Fiji
Navi 21
GPU Variant
Fiji XT CA(215-0862120)
Navi 21 XL(215-121000187)
Architecture
GCN 3.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
7 nm
Transistors
8.9 billion
26.8 billion
Die Size
596 mm²
520 mm²
Board Design
TDP
175W
250W
Suggested PSU
450 W
600 W
Outputs
No outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
Power Connectors
1x 8-pin
2x 8-pin
Graphics Features
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
2.1
Vulkan
1.2.170
1.3
Shader Model
6.5
6.5
Benchmark
3DMark Time Spy
—
16,182
3DMark Time Spy Extreme
—
7,771
3DMark Speed Way
—
3,062
▲ Specs Compare
Data sourced from official specifications and benchmark tests.