NVIDIA GeForce RTX 4090 vs AMD Radeon HD 6950

VS

NVIDIA GeForce RTX 4090

AMD Radeon HD 6950

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 4090 and 2GB VRAM Radeon HD 6950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4090 's Advantages

Released 11 years and 9 months late

Boost Clock2520MHz

More VRAM (24GB vs 2GB)

Larger VRAM bandwidth (1.01TB/s vs 160.0GB/s)

14976 additional rendering cores

AMD Radeon HD 6950 's Advantages

Lower TDP (200W vs 450W)

Score

Benchmark

FP32 (float)

GeForce RTX 4090 +3565%

82.58 TFLOPS

Radeon HD 6950

2.253 TFLOPS

GeForce RTX 4090

VS

Radeon HD 6950

Graphics Card

Sep 2022

Release Date

Dec 2010

GeForce 40

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

2235 MHz

Base Clock

-

2520 MHz

Boost Clock

-

1313 MHz

Memory Clock

1250 MHz

Memory

24GB

Memory Size

2GB

GDDR6X

Memory Type

GDDR5

384bit

Memory Bus

256bit

1.01TB/s

Bandwidth

160.0GB/s

Render Config

-

Compute Units

22

128

SM Count

-

16384

Shading Units

1408

512

TMUs

88

176

ROPs

32

512

Tensor Cores

-

128

RT Cores

-

128 KB (per SM)

L1 Cache

8 KB (per CU)

72 MB

L2 Cache

512 KB

-

Theoretical Performance

443.5 GPixel/s

Pixel Rate

25.60 GPixel/s

1290 GTexel/s

Texture Rate

70.40 GTexel/s

82.58 TFLOPS

FP16 (half)

-

82.58 TFLOPS

FP32 (float)

2.253 TFLOPS

1290 GFLOPS

FP64 (double)

563.2 GFLOPS

Board Design

450W

TDP

200W

850 W

Suggested PSU

550 W

1x HDMI 2.13x DisplayPort 1.4a

Outputs

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

1x 16-pin

Power Connectors

2x 6-pin

Graphics Processor

AD102

GPU Name

Cayman

AD102-300-A1

GPU Variant

Cayman PRO (215-0807019)

Ada Lovelace

Architecture

TeraScale 3

TSMC

Foundry

TSMC

5 nm

Process Size

40 nm

76.3 billion

Transistors

2.64 billion

609 mm²

Die Size

389 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.3

Vulkan

N/A

8.9

CUDA

-

6.8

Shader Model

5.0

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