AMD Radeon HD 7870 XT vs NVIDIA GeForce RTX 3090

VS

AMD Radeon HD 7870 XT

NVIDIA GeForce RTX 3090

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 24GB VRAM GeForce RTX 3090 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 XT 's Advantages

Lower TDP (185W vs 350W)

NVIDIA GeForce RTX 3090 's Advantages

Released 7 years and 10 months late

Boost Clock has increased by 74% (1695MHz vs 975MHz)

More VRAM (24GB vs 2GB)

Larger VRAM bandwidth (936.2GB/s vs 192.0GB/s)

8960 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT

2.995 TFLOPS

GeForce RTX 3090 +1087%

35.58 TFLOPS

Radeon HD 7870 XT

VS

GeForce RTX 3090

Graphics Card

Nov 2012

Release Date

Sep 2020

Southern Islands

Generation

GeForce 30

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

925 MHz

Base Clock

1395 MHz

975 MHz

Boost Clock

1695 MHz

1500 MHz

Memory Clock

1219 MHz

Memory

2GB

Memory Size

24GB

GDDR5

Memory Type

GDDR6X

256bit

Memory Bus

384bit

192.0GB/s

Bandwidth

936.2GB/s

Render Config

24

Compute Units

-

SM Count

82

1536

Shading Units

10496

96

TMUs

328

32

ROPs

112

-

Tensor Cores

328

-

RT Cores

82

16 KB (per CU)

L1 Cache

128 KB (per SM)

512 KB

L2 Cache

6 MB

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

189.8 GPixel/s

93.60 GTexel/s

Texture Rate

556.0 GTexel/s

-

FP16 (half)

35.58 TFLOPS

2.995 TFLOPS

FP32 (float)

35.58 TFLOPS

748.8 GFLOPS

FP64 (double)

556.0 GFLOPS

Board Design

185W

TDP

350W

450 W

Suggested PSU

750 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

2x 6-pin

Power Connectors

1x 12-pin

Graphics Processor

Tahiti

GPU Name

GA102

Tahiti LE (215-0821122)

GPU Variant

GA102-300-A1

GCN 1.0

Architecture

Ampere

TSMC

Foundry

Samsung

28 nm

Process Size

8 nm

4.313 billion

Transistors

28.3 billion

352 mm²

Die Size

628 mm²

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

8.6

5.1

Shader Model

6.6

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