AMD Radeon R9 280X vs AMD Radeon RX 6800 XT
GPU · Specs Compare
Graphics Card
Release Date
Oct 2013
Oct 2020
Generation
Volcanic Islands
Navi II
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
850 MHz
1825 MHz
Boost Clock
1000 MHz
2250 MHz
Memory Clock
1500 MHz
2000 MHz
Memory
Memory Size
3GB
16GB
Memory Type
GDDR5
GDDR6
Memory Bus
384bit
256bit
Bandwidth
288.0GB/s
512.0GB/s
Render Config
Compute Units
32
72
Shading Units
2048
4608
TMUs
128
288
ROPs
32
128
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
768 KB
4 MB
RT Cores
—
72
L3 Cache
—
128 MB
Theoretical Performance
Pixel Rate
32.00 GPixel/s
288.0 GPixel/s
Texture Rate
128.0 GTexel/s
648.0 GTexel/s
FP32 (float)
4.096 TFLOPS
20.74 TFLOPS
FP64 (double)
1024 GFLOPS
1296 GFLOPS
FP16 (half)
—
41.47 TFLOPS
Graphics Processor
GPU Name
Tahiti
Navi 21
GPU Variant
Tahiti XTL(215-0821065)
Navi 21 XT(215-121000177)
Architecture
GCN 1.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
7 nm
Transistors
4.313 billion
26.8 billion
Die Size
352 mm²
520 mm²
Board Design
TDP
250W
300W
Suggested PSU
600 W
700 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
Power Connectors
1x 6-pin + 1x 8-pin
2x 8-pin
Graphics Features
DirectX
12 (11_1)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
1.2
2.1
Vulkan
1.2
1.3
Shader Model
5.1
6.5
Benchmark
3DMark Time Spy
—
19,329
▲ Specs Compare
Data sourced from official specifications and benchmark tests.