NVIDIA GeForce RTX 3090 vs ATI Radeon HD 3870

VS

NVIDIA GeForce RTX 3090

ATI Radeon HD 3870

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 3090 and 512MB VRAM Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3090 's Advantages

Released 12 years and 10 months late

Boost Clock1695MHz

More VRAM (24GB vs 512GB)

Larger VRAM bandwidth (936.2GB/s vs 72.06GB/s)

10176 additional rendering cores

ATI Radeon HD 3870 's Advantages

Lower TDP (106W vs 350W)

Score

Benchmark

FP32 (float)

GeForce RTX 3090 +7058%

35.58 TFLOPS

Radeon HD 3870

0.497 TFLOPS

GeForce RTX 3090

VS

Radeon HD 3870

Graphics Card

Sep 2020

Release Date

Nov 2007

GeForce 30

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1395 MHz

Base Clock

-

1695 MHz

Boost Clock

-

1219 MHz

Memory Clock

1126 MHz

Memory

24GB

Memory Size

512MB

GDDR6X

Memory Type

GDDR4

384bit

Memory Bus

256bit

936.2GB/s

Bandwidth

72.06GB/s

Render Config

-

Compute Units

4

82

SM Count

-

10496

Shading Units

320

328

TMUs

16

112

ROPs

16

328

Tensor Cores

-

82

RT Cores

-

128 KB (per SM)

L1 Cache

-

6 MB

L2 Cache

256 KB

-

Theoretical Performance

189.8 GPixel/s

Pixel Rate

12.43 GPixel/s

556.0 GTexel/s

Texture Rate

12.43 GTexel/s

35.58 TFLOPS

FP16 (half)

-

35.58 TFLOPS

FP32 (float)

497.3 GFLOPS

556.0 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

350W

TDP

106W

750 W

Suggested PSU

300 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

2x DVI 1x S-Video

1x 12-pin

Power Connectors

1x 6-pin

Graphics Processor

GA102

GPU Name

RV670

GA102-300-A1

GPU Variant

RV670 XT (215-0708005)

Ampere

Architecture

TeraScale

Samsung

Foundry

TSMC

8 nm

Process Size

55 nm

28.3 billion

Transistors

0.666 billion

628 mm²

Die Size

192 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

3.0

OpenCL

N/A

1.3

Vulkan

N/A

8.6

CUDA

-

6.6

Shader Model

4.1

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