AMD Radeon RX 6800 vs AMD Radeon HD 7950 Mac Edition
GPU · Specs Compare
Graphics Card
Release Date
Oct 2020
Mar 2013
Generation
Navi II
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1700 MHz
—
Boost Clock
2105 MHz
—
Memory Clock
2000 MHz
1250 MHz
Memory
Memory Size
16GB
3GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
384bit
Bandwidth
512.0GB/s
240.0GB/s
Render Config
Compute Units
60
28
Shading Units
3840
1792
TMUs
240
112
ROPs
96
32
RT Cores
60
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
768 KB
L3 Cache
128 MB
—
Theoretical Performance
Pixel Rate
202.1 GPixel/s
25.60 GPixel/s
Texture Rate
505.2 GTexel/s
89.60 GTexel/s
FP16 (half)
32.33 TFLOPS
—
FP32 (float)
16.17 TFLOPS
2.867 TFLOPS
FP64 (double)
1010 GFLOPS
716.8 GFLOPS
Graphics Processor
GPU Name
Navi 21
Tahiti
GPU Variant
Navi 21 XL(215-121000187)
Tahiti PRO(215-0821056)
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
352 mm²
Board Design
TDP
250W
200W
Suggested PSU
600 W
550 W
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
2x 8-pin
2x 6-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
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.