ATI Radeon HD 3870 AGP vs AMD Radeon RX 7800 XT

VS

ATI Radeon HD 3870 AGP

AMD Radeon RX 7800 XT

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 AGP and 16GB VRAM Radeon RX 7800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3870 AGP 's Advantages

Lower TDP (106W vs 263W)

AMD Radeon RX 7800 XT 's Advantages

Boost Clock2430MHz

More VRAM (16GB vs 512GB)

Larger VRAM bandwidth (624.1GB/s vs 72.06GB/s)

3520 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 3870 AGP

0.497 TFLOPS

Radeon RX 7800 XT +7409%

37.32 TFLOPS

Radeon HD 3870 AGP

VS

Radeon RX 7800 XT

Graphics Card

Unknown

Release Date

Aug 2023

Radeon R600

Generation

Navi III

Desktop

Type

Desktop

AGP 8x

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1295 MHz

-

Boost Clock

2430 MHz

1126 MHz

Memory Clock

2438 MHz

Memory

512MB

Memory Size

16GB

GDDR4

Memory Type

GDDR6

256bit

Memory Bus

256bit

72.06GB/s

Bandwidth

624.1GB/s

Render Config

4

Compute Units

60

-

320

Shading Units

3840

16

TMUs

240

16

ROPs

96

-

RT Cores

60

-

L1 Cache

128 KB per Array

256 KB

L2 Cache

4 MB

-

L3 Cache

64 MB

Theoretical Performance

12.43 GPixel/s

Pixel Rate

233.3 GPixel/s

12.43 GTexel/s

Texture Rate

583.2 GTexel/s

-

FP16 (half)

74.65 TFLOPS

497.3 GFLOPS

FP32 (float)

37.32 TFLOPS

99.46 GFLOPS

FP64 (double)

1166 GFLOPS

Board Design

106W

TDP

263W

300 W

Suggested PSU

600 W

2x DVI 1x S-Video

Outputs

1x HDMI 2.1a 3x DisplayPort 2.1

1x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

RV670

GPU Name

Navi 32

RV670 XT (215-0708005)

GPU Variant

Navi 32 XT (215-180000006)

TeraScale

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

55 nm

Process Size

5 nm

0.666 billion

Transistors

28.1 billion

192 mm²

Die Size

346 mm²

Graphics Features

10.1 (10_1)

DirectX

12 Ultimate (12_2)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

2.2

N/A

Vulkan

1.3

-

4.1

Shader Model

6.7

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