AMD Radeon RX 6700 vs ATI Radeon HD 3870

VS

AMD Radeon RX 6700

ATI Radeon HD 3870

We compared two Desktop platform GPUs: 10GB VRAM Radeon RX 6700 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 6700 's Advantages

Released 13 years and 7 months late

Boost Clock2450MHz

More VRAM (10GB vs 512GB)

Larger VRAM bandwidth (320.0GB/s vs 72.06GB/s)

1984 additional rendering cores

ATI Radeon HD 3870 's Advantages

Lower TDP (106W vs 175W)

Score

Benchmark

FP32 (float)

Radeon RX 6700 +2171%

11.29 TFLOPS

Radeon HD 3870

0.497 TFLOPS

Radeon RX 6700

VS

Radeon HD 3870

Graphics Card

Jun 2021

Release Date

Nov 2007

Navi II

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1941 MHz

Base Clock

-

2450 MHz

Boost Clock

-

2000 MHz

Memory Clock

1126 MHz

Memory

10GB

Memory Size

512MB

GDDR6

Memory Type

GDDR4

160bit

Memory Bus

256bit

320.0GB/s

Bandwidth

72.06GB/s

Render Config

36

Compute Units

4

-

2304

Shading Units

320

144

TMUs

16

64

ROPs

16

-

36

RT Cores

-

128 KB per Array

L1 Cache

-

3 MB

L2 Cache

256 KB

80 MB

L3 Cache

-

Theoretical Performance

156.8 GPixel/s

Pixel Rate

12.43 GPixel/s

352.8 GTexel/s

Texture Rate

12.43 GTexel/s

22.58 TFLOPS

FP16 (half)

-

11.29 TFLOPS

FP32 (float)

497.3 GFLOPS

705.6 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

175W

TDP

106W

450 W

Suggested PSU

300 W

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

Outputs

2x DVI 1x S-Video

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Navi 22

GPU Name

RV670

Navi 22 XTL

GPU Variant

RV670 XT (215-0708005)

RDNA 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

7 nm

Process Size

55 nm

17.2 billion

Transistors

0.666 billion

335 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)

2.1

OpenCL

N/A

1.3

Vulkan

N/A

-

6.5

Shader Model

4.1

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