Home GPU Comparison NVIDIA GeForce RTX 3080 Ti vs AMD Radeon HD 7870 XT

NVIDIA GeForce RTX 3080 Ti vs AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 12GB VRAM GeForce RTX 3080 Ti and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3080 Ti 's Advantages
Released 8 years and 6 months late
Boost Clock has increased by 71% (1665MHz vs 975MHz)
More VRAM (12GB vs 2GB)
Larger VRAM bandwidth (912.4GB/s vs 192.0GB/s)
8704 additional rendering cores
AMD Radeon HD 7870 XT 's Advantages
Lower TDP (185W vs 350W)

Score

Benchmark

FP32 (float)
GeForce RTX 3080 Ti +1038%
34.1 TFLOPS
Radeon HD 7870 XT
2.995 TFLOPS
VS

Graphics Card

May 2021
Release Date
Nov 2012
GeForce 30
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

1365 MHz
Base Clock
925 MHz
1665 MHz
Boost Clock
975 MHz
1188 MHz
Memory Clock
1500 MHz

Memory

12GB
Memory Size
2GB
GDDR6X
Memory Type
GDDR5
384bit
Memory Bus
256bit
912.4GB/s
Bandwidth
192.0GB/s

Render Config

-
Compute Units
24
80
SM Count
-
10240
Shading Units
1536
320
TMUs
96
112
ROPs
32
320
Tensor Cores
-
80
RT Cores
-
128 KB (per SM)
L1 Cache
16 KB (per CU)
6 MB
L2 Cache
512 KB
-
-
-

Theoretical Performance

186.5 GPixel/s
Pixel Rate
31.20 GPixel/s
532.8 GTexel/s
Texture Rate
93.60 GTexel/s
34.10 TFLOPS
FP16 (half)
-
34.10 TFLOPS
FP32 (float)
2.995 TFLOPS
532.8 GFLOPS
FP64 (double)
748.8 GFLOPS

Board Design

350W
TDP
185W
750 W
Suggested PSU
450 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
1x 12-pin
Power Connectors
2x 6-pin

Graphics Processor

GA102
GPU Name
Tahiti
GA102-225-A1
GPU Variant
Tahiti LE (215-0821122)
Ampere
Architecture
GCN 1.0
Samsung
Foundry
TSMC
8 nm
Process Size
28 nm
28.3 billion
Transistors
4.313 billion
628 mm²
Die Size
352 mm²

Graphics Features

12 Ultimate (12_2)
DirectX
12 (11_1)
4.6
OpenGL
4.6
3.0
OpenCL
1.2
1.3
Vulkan
1.2
8.6
CUDA
-
6.6
Shader Model
5.1

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