AMD Radeon RX 6800 XT vs AMD Radeon R9 M395X
GPU · Specs Compare
Graphics Card
Release Date
Oct 2020
May 2015
Generation
Navi II
Crystal System
Type
Desktop
Mobile
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1825 MHz
—
Boost Clock
2250 MHz
—
Memory Clock
2000 MHz
1250 MHz
Memory
Memory Size
16GB
8GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
256bit
Bandwidth
512.0GB/s
160.0GB/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
512 KB
L3 Cache
128 MB
—
Theoretical Performance
Pixel Rate
288.0 GPixel/s
23.14 GPixel/s
Texture Rate
648.0 GTexel/s
92.54 GTexel/s
FP16 (half)
41.47 TFLOPS
2.961 TFLOPS
FP32 (float)
20.74 TFLOPS
2.961 TFLOPS
FP64 (double)
1296 GFLOPS
185.1 GFLOPS
Graphics Processor
GPU Name
Navi 21
Amethyst
GPU Variant
Navi 21 XT(215-121000177)
Amethyst XT
Architecture
RDNA 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
26.8 billion
5 billion
Die Size
520 mm²
366 mm²
Board Design
TDP
300W
75W
Suggested PSU
700 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 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.0
Vulkan
1.3
1.2
Shader Model
6.5
6.3
Benchmark
3DMark Time Spy
19,329
2,514
▲ Specs Compare
Data sourced from official specifications and benchmark tests.