GeForce RTX 3080 12 GB vs Radeon HD 6870 X2
We compared two Desktop platform GPUs: 12GB VRAM GeForce RTX 3080 12 GB 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 3080 12 GB Advantages
Released 10 years and 6 months late
Boost Clock1710MHz
More VRAM (12GB vs 1024GB)
Larger VRAM bandwidth (912.4GB/s vs 134.4GB/s)
7840 additional rendering cores
Radeon HD 6870 X2 Advantages
Lower TDP (300W vs 350W)
Score
Benchmark
FP32 (float)
GeForce RTX 3080 12 GB
+1419%
30640
Radeon HD 6870 X2
2016
Graphics Card
Jan 2022
Release Date
Jul 2011
GeForce 30
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1260 MHz
Base Clock
-
1710 MHz
Boost Clock
-
1188 MHz
Memory Clock
1050 MHz
Memory
12GB
Memory Size
1024MB
GDDR6X
Memory Type
GDDR5
384bit
Memory Bus
256bit
912.4GB/s
Bandwidth
134.4GB/s
Render Config
-
Compute Units
14
70
SM Count
-
8960
Shading Units
1120
280
TMUs
56
96
ROPs
32
280
Tensor Cores
-
70
RT Cores
-
128 KB (per SM)
L1 Cache
8 KB (per CU)
6 MB
L2 Cache
512 KB
Theoretical Performance
164.2 GPixel/s
Pixel Rate
28.80 GPixel/s
478.8 GTexel/s
Texture Rate
50.40 GTexel/s
30.64 TFLOPS
FP16 (half)
-
30.64 TFLOPS
FP32 (float)
2.016 TFLOPS
478.8 GFLOPS
FP64 (double)
-
Board Design
350W
TDP
300W
750 W
Suggested PSU
700 W
1x HDMI 2.1
3x DisplayPort 1.4a
3x DisplayPort 1.4a
Outputs
2x DVI
1x HDMI 1.3a
2x mini-DisplayPort 1.1
1x HDMI 1.3a
2x mini-DisplayPort 1.1
1x 12-pin
Power Connectors
-
Graphics Processor
GA102
GPU Name
Barts
GA102-220-A1
GPU Variant
Barts XT
(215-0798000)
(215-0798000)
Ampere
Architecture
TeraScale 2
Samsung
Foundry
TSMC
8 nm
Process Size
40 nm
28.3 billion
Transistors
1.7 billion
628 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
8.6
CUDA
-
6.8
Shader Model
5.0