AMD Radeon RX 6800 vs AMD Radeon 660M
GPU Specs Compare
Graphics Card
Release Date
Oct 2020
Jan 2022
Generation
Navi II
Rembrandt
Type
Desktop
Integrated
Bus Interface
PCIe 4.0 x16
PCIe 4.0 x8
Clock Speeds
Base Clock
1700 MHz
1500 MHz
Boost Clock
2105 MHz
1900 MHz
Memory Clock
2000 MHz
System Shared
Memory
Memory Size
16GB
System Shared
Memory Type
GDDR6
System Shared
Memory Bus
256bit
System Shared
Bandwidth
512.0GB/s
System Dependent
Render Config
Compute Units
60
6
Shading Units
3840
384
TMUs
240
24
ROPs
96
16
RT Cores
60
6
L1 Cache
128 KB per Array
128 KB per Array
L2 Cache
4 MB
2 MB
L3 Cache
128 MB
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Theoretical Performance
Pixel Rate
202.1 GPixel/s
30.40 GPixel/s
Texture Rate
505.2 GTexel/s
45.60 GTexel/s
FP16 (half)
32.33 TFLOPS
2.918 TFLOPS
FP32 (float)
16.17 TFLOPS
1459 GFLOPS
FP64 (double)
1010 GFLOPS
91.20 GFLOPS
Graphics Processor
GPU Name
Navi 21
Rembrandt
GPU Variant
Navi 21 XL(215-121000187)
-
Architecture
RDNA 2.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
7 nm
6 nm
Transistors
26.8 billion
13.1 billion
Die Size
520 mm²
210 mm²
Board Design
TDP
250W
15W
Suggested PSU
600 W
-
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
No outputs
Power Connectors
2x 8-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
2.0
Vulkan
1.3
1.2
Shader Model
6.5
6.5
📊 Benchmark
3DMark Time Spy
16,182
1,537
3DMark Time Spy Extreme
7,771
701
3DMark Speed Way
3,062
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