Home GPU Comparison NVIDIA GeForce RTX 3080 Ti 20 GB vs ATI Radeon HD 3870 X2

NVIDIA GeForce RTX 3080 Ti 20 GB vs ATI Radeon HD 3870 X2

We compared two Desktop platform GPUs: 20GB VRAM GeForce RTX 3080 Ti 20 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

NVIDIA GeForce RTX 3080 Ti 20 GB 's Advantages
Released 14 years late
Boost Clock1665MHz
More VRAM (20GB vs 512GB)
Larger VRAM bandwidth (760.3GB/s vs 57.66GB/s)
9920 additional rendering cores
ATI Radeon HD 3870 X2 's Advantages
Lower TDP (165W vs 350W)

Score

Benchmark

FP32 (float)
GeForce RTX 3080 Ti 20 GB +6358%
34.1 TFLOPS
Radeon HD 3870 X2
0.528 TFLOPS
VS

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

1335 MHz
Base Clock
-
1665 MHz
Boost Clock
-
1188 MHz
Memory Clock
901 MHz

Memory

20GB
Memory Size
512MB
GDDR6X
Memory Type
GDDR3
320bit
Memory Bus
256bit
760.3GB/s
Bandwidth
57.66GB/s

Render Config

-
Compute Units
4
80
SM Count
-
10240
Shading Units
320
320
TMUs
16
112
ROPs
16
320
Tensor Cores
-
80
RT Cores
-
128 KB (per SM)
L1 Cache
-
6 MB
L2 Cache
256 KB
-
-
-

Theoretical Performance

186.5 GPixel/s
Pixel Rate
13.20 GPixel/s
532.8 GTexel/s
Texture Rate
13.20 GTexel/s
34.10 TFLOPS
FP16 (half)
-
34.10 TFLOPS
FP32 (float)
528.0 GFLOPS
532.8 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
Outputs
2x DVI 1x S-Video
1x 12-pin
Power Connectors
1x 6-pin + 1x 8-pin

Graphics Processor

GA102
GPU Name
R680
GA102-225-A1
GPU Variant
R680 XT (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)
3.0
OpenCL
N/A
1.3
Vulkan
N/A
8.6
CUDA
-
6.6
Shader Model
4.1

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