AMD Radeon RX 7800 XT vs ATI Radeon HD 3870

VS

AMD Radeon RX 7800 XT

ATI Radeon HD 3870

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

Main Differences

AMD Radeon RX 7800 XT 's Advantages

Released 15 years and 9 months late

Boost Clock2430MHz

More VRAM (16GB vs 512GB)

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

3520 additional rendering cores

ATI Radeon HD 3870 's Advantages

Lower TDP (106W vs 263W)

Score

Benchmark

FP32 (float)

Radeon RX 7800 XT +7409%

37.32 TFLOPS

Radeon HD 3870

0.497 TFLOPS

Radeon RX 7800 XT

VS

Radeon HD 3870

Graphics Card

Aug 2023

Release Date

Nov 2007

Navi III

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1295 MHz

Base Clock

-

2430 MHz

Boost Clock

-

2438 MHz

Memory Clock

1126 MHz

Memory

16GB

Memory Size

512MB

GDDR6

Memory Type

GDDR4

256bit

Memory Bus

256bit

624.1GB/s

Bandwidth

72.06GB/s

Render Config

60

Compute Units

4

-

3840

Shading Units

320

240

TMUs

16

96

ROPs

16

-

60

RT Cores

-

128 KB per Array

L1 Cache

-

4 MB

L2 Cache

256 KB

64 MB

L3 Cache

-

Theoretical Performance

233.3 GPixel/s

Pixel Rate

12.43 GPixel/s

583.2 GTexel/s

Texture Rate

12.43 GTexel/s

74.65 TFLOPS

FP16 (half)

-

37.32 TFLOPS

FP32 (float)

497.3 GFLOPS

1166 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

263W

TDP

106W

600 W

Suggested PSU

300 W

1x HDMI 2.1a 3x DisplayPort 2.1

Outputs

2x DVI 1x S-Video

2x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Navi 32

GPU Name

RV670

Navi 32 XT (215-180000006)

GPU Variant

RV670 XT (215-0708005)

RDNA 3.0

Architecture

TeraScale

TSMC

Foundry

TSMC

5 nm

Process Size

55 nm

28.1 billion

Transistors

0.666 billion

346 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)

2.2

OpenCL

N/A

1.3

Vulkan

N/A

-

6.7

Shader Model

4.1

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