GeForce RTX 4080 vs Radeon HD 6870 X2
We compared two Desktop platform GPUs: 16GB VRAM GeForce RTX 4080 and 1024MB VRAM Radeon HD 6870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce RTX 4080 's Advantages
Released 11 years and 2 months late
Boost Clock2505MHz
More VRAM (16GB vs 1024GB)
Larger VRAM bandwidth (716.8GB/s vs 134.4GB/s)
8608 additional rendering cores
Radeon HD 6870 X2 's Advantages
Lower TDP (300W vs 320W)
Score
Benchmark
FP32 (float)
GeForce RTX 4080
+2317%
48740
Radeon HD 6870 X2
2016
Graphics Card
Sep 2022
Release Date
Jul 2011
GeForce 40
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
2205 MHz
Base Clock
-
2505 MHz
Boost Clock
-
1400 MHz
Memory Clock
1050 MHz
Memory
16GB
Memory Size
1024MB
GDDR6X
Memory Type
GDDR5
256bit
Memory Bus
256bit
716.8GB/s
Bandwidth
134.4GB/s
Render Config
-
Compute Units
14
76
SM Count
-
9728
Shading Units
1120
304
TMUs
56
112
ROPs
32
304
Tensor Cores
-
76
RT Cores
-
128 KB (per SM)
L1 Cache
8 KB (per CU)
64 MB
L2 Cache
512 KB
Theoretical Performance
280.6 GPixel/s
Pixel Rate
28.80 GPixel/s
761.5 GTexel/s
Texture Rate
50.40 GTexel/s
48.74 TFLOPS
FP16 (half)
-
48.74 TFLOPS
FP32 (float)
2.016 TFLOPS
761.5 GFLOPS
FP64 (double)
-
Board Design
320W
TDP
300W
700 W
Suggested PSU
700 W
1x HDMI 2.1
3x DisplayPort 1.4a
Outputs
2x DVI
1x HDMI 1.3a
2x mini-DisplayPort 1.1
1x 16-pin
Power Connectors
-
Graphics Processor
AD103
GPU Name
Barts
AD103-300-A1
GPU Variant
Barts XT
(215-0798000)
Ada Lovelace
Architecture
TeraScale 2
TSMC
Foundry
TSMC
5 nm
Process Size
40 nm
45.9 billion
Transistors
1.7 billion
379 mm²
Die Size
255 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
3.0
OpenCL
1.2
1.3
Vulkan
N/A
8.9
CUDA
-
6.7
Shader Model
5.0
