NVIDIA GeForce RTX 4090 vs AMD Radeon HD 7870 XT

VS

NVIDIA GeForce RTX 4090 AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 4090 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 4090 's Advantages

Released 9 years and 10 months late

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

More VRAM (24GB vs 2GB)

14848 additional rendering cores

AMD Radeon HD 7870 XT 's Advantages

Larger VRAM bandwidth (192.0TB/s vs 1.01TB/s)

Lower TDP (185W vs 450W)

Score

Benchmark

FP32 (float)

GeForce RTX 4090 +2657%

82.58 TFLOPS

Radeon HD 7870 XT

2.995 TFLOPS

GeForce RTX 4090

VS

Radeon HD 7870 XT

Graphics Card

Sep 2022

Release Date

Nov 2012

GeForce 40

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2235 MHz

Base Clock

925 MHz

2520 MHz

Boost Clock

975 MHz

1313 MHz

Memory Clock

1500 MHz

Memory

24GB

Memory Size

2GB

GDDR6X

Memory Type

GDDR5

384bit

Memory Bus

256bit

1.01TB/s

Bandwidth

192.0GB/s

Render Config

128

SM Count

-

Compute Units

24

16384

Shading Units

1536

512

TMUs

96

176

ROPs

32

512

Tensor Cores

-

128

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

72 MB

L2 Cache

512 KB

Theoretical Performance

443.5 GPixel/s

Pixel Rate

31.20 GPixel/s

1290 GTexel/s

Texture Rate

93.60 GTexel/s

82.58 TFLOPS

FP16 (half)

-

82.58 TFLOPS

FP32 (float)

2.995 TFLOPS

1290 GFLOPS

FP64 (double)

748.8 GFLOPS

Graphics Processor

AD102

GPU Name

Tahiti

AD102-300-A1

GPU Variant

Tahiti LE (215-0821122)

Ada Lovelace

Architecture

GCN 1.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

76.3 billion

Transistors

4.313 billion

609 mm²

Die Size

352 mm²

Board Design

450W

TDP

185W

850 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 16-pin

Power Connectors

2x 6-pin

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

8.9

CUDA

-

6.7

Shader Model

5.1

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