NVIDIA GeForce RTX 4090 vs AMD Radeon HD 7950

VS

NVIDIA GeForce RTX 4090

AMD Radeon HD 7950

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 4090 and 3GB VRAM Radeon HD 7950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4090 's Advantages

Released 10 years and 8 months late

Boost Clock2520MHz

More VRAM (24GB vs 3GB)

Larger VRAM bandwidth (1.01TB/s vs 240.0GB/s)

14592 additional rendering cores

AMD Radeon HD 7950 's Advantages

Lower TDP (200W vs 450W)

Score

Benchmark

FP32 (float)

GeForce RTX 4090 +2780%

82.58 TFLOPS

Radeon HD 7950

2.867 TFLOPS

3DMark Time Spy

GeForce RTX 4090 +1803%

36499

Radeon HD 7950

1917

GeForce RTX 4090

VS

Radeon HD 7950

Graphics Card

Sep 2022

Release Date

Jan 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

-

2520 MHz

Boost Clock

-

1313 MHz

Memory Clock

1250 MHz

Memory

24GB

Memory Size

3GB

GDDR6X

Memory Type

GDDR5

384bit

Memory Bus

384bit

1.01TB/s

Bandwidth

240.0GB/s

Render Config

-

Compute Units

28

128

SM Count

-

16384

Shading Units

1792

512

TMUs

112

176

ROPs

32

512

Tensor Cores

-

128

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

72 MB

L2 Cache

768 KB

-

Theoretical Performance

443.5 GPixel/s

Pixel Rate

25.60 GPixel/s

1290 GTexel/s

Texture Rate

89.60 GTexel/s

82.58 TFLOPS

FP16 (half)

-

82.58 TFLOPS

FP32 (float)

2.867 TFLOPS

1290 GFLOPS

FP64 (double)

716.8 GFLOPS

Board Design

450W

TDP

200W

850 W

Suggested PSU

550 W

1x HDMI 2.13x DisplayPort 1.4a

Outputs

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

1x 16-pin

Power Connectors

2x 6-pin

Graphics Processor

AD102

GPU Name

Tahiti

AD102-300-A1

GPU Variant

Tahiti PRO (215-0821056)

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

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

-

6.8

Shader Model

5.1

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