AMD Radeon HD 7870 XT vs NVIDIA GeForce RTX 4090

VS

AMD Radeon HD 7870 XT NVIDIA GeForce RTX 4090

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 24GB VRAM GeForce RTX 4090 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 450W)

NVIDIA GeForce RTX 4090 's Advantages

Released 9 years and 10 months late

Boost Clock has increased by 158% (2520MHz vs 975MHz)

More VRAM (24GB vs 2GB)

Larger VRAM bandwidth (1010GB/s vs 192.0GB/s)

14848 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7870 XT

2.995 TFLOPS

GeForce RTX 4090 +2657%

82.58 TFLOPS

Radeon HD 7870 XT

VS

GeForce RTX 4090

Graphics Card

Nov 2012

Release Date

Sep 2022

Southern Islands

Generation

GeForce 40

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

925 MHz

Base Clock

2235 MHz

975 MHz

Boost Clock

2520 MHz

1500 MHz

Memory Clock

1313 MHz

Memory

2GB

Memory Size

24GB

GDDR5

Memory Type

GDDR6X

256bit

Memory Bus

384bit

192.0GB/s

Bandwidth

1010GB/s

Render Config

-

SM Count

128

24

Compute Units

-

1536

Shading Units

16384

96

TMUs

512

32

ROPs

176

-

Tensor Cores

512

-

RT Cores

128

16 KB (per CU)

L1 Cache

128 KB (per SM)

512 KB

L2 Cache

72 MB

Theoretical Performance

31.20 GPixel/s

Pixel Rate

443.5 GPixel/s

93.60 GTexel/s

Texture Rate

1290 GTexel/s

-

FP16 (half)

82.58 TFLOPS

2.995 TFLOPS

FP32 (float)

82.58 TFLOPS

748.8 GFLOPS

FP64 (double)

1290 GFLOPS

Graphics Processor

Tahiti

GPU Name

AD102

Tahiti LE (215-0821122)

GPU Variant

AD102-300-A1

GCN 1.0

Architecture

Ada Lovelace

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

4.313 billion

Transistors

76.3 billion

352 mm²

Die Size

609 mm²

Board Design

185W

TDP

450W

450 W

Suggested PSU

850 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 16-pin

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

8.9

5.1

Shader Model

6.7

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