GeForce RTX 3080 12 GB vs Radeon HD 3870 X2
We compared two Desktop platform GPUs: 12GB VRAM GeForce RTX 3080 12 GB and 512MB VRAM Radeon HD 3870 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 14 years late
Boost Clock1710MHz
More VRAM (12GB vs 512GB)
Larger VRAM bandwidth (912.4GB/s vs 57.66GB/s)
8640 additional rendering cores
Radeon HD 3870 X2 Advantages
Lower TDP (165W vs 350W)
Score
Benchmark
FP32 (float)
GeForce RTX 3080 12 GB
+5703%
30640
Radeon HD 3870 X2
528
Graphics Card
Jan 2022
Release Date
Jan 2008
GeForce 30
Generation
Radeon R600
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
901 MHz
Memory
12GB
Memory Size
512MB
GDDR6X
Memory Type
GDDR3
384bit
Memory Bus
256bit
912.4GB/s
Bandwidth
57.66GB/s
Render Config
-
Compute Units
4
70
SM Count
-
8960
Shading Units
320
280
TMUs
16
96
ROPs
16
280
Tensor Cores
-
70
RT Cores
-
128 KB (per SM)
L1 Cache
-
6 MB
L2 Cache
256 KB
Theoretical Performance
164.2 GPixel/s
Pixel Rate
13.20 GPixel/s
478.8 GTexel/s
Texture Rate
13.20 GTexel/s
30.64 TFLOPS
FP16 (half)
-
30.64 TFLOPS
FP32 (float)
528.0 GFLOPS
478.8 GFLOPS
FP64 (double)
105.6 GFLOPS
Board Design
350W
TDP
165W
750 W
Suggested PSU
450 W
1x HDMI 2.1
3x DisplayPort 1.4a
3x DisplayPort 1.4a
Outputs
2x DVI
1x S-Video
1x S-Video
1x 12-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
GA102
GPU Name
R680
GA102-220-A1
GPU Variant
R680 XT
(215-0708017)
(215-0708017)
Ampere
Architecture
TeraScale
Samsung
Foundry
TSMC
8 nm
Process Size
55 nm
28.3 billion
Transistors
0.666 billion
628 mm²
Die Size
192 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full)
4.0 (partial)
4.0 (partial)
3.0
OpenCL
N/A
1.3
Vulkan
N/A
8.6
CUDA
-
6.8
Shader Model
4.1