AMD Radeon RX 6700 vs ATI Radeon HD 3870 X2

VS

AMD Radeon RX 6700 ATI Radeon HD 3870 X2

We compared two Desktop platform GPUs: 10GB VRAM Radeon RX 6700 and 512MB VRAM Radeon HD 3870 X2 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 5 months late

Boost Clock2450MHz

Larger VRAM bandwidth (320.0GB/s vs 57.66GB/s)

1984 additional rendering cores

ATI Radeon HD 3870 X2 's Advantages

Lower TDP (165W vs 175W)

Score

Benchmark

FP32 (float)

Radeon RX 6700 +2038%

11.29 TFLOPS

Radeon HD 3870 X2

0.528 TFLOPS

Radeon RX 6700

VS

Radeon HD 3870 X2

Graphics Card

Jun 2021

Release Date

Jan 2008

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

901 MHz

Memory

10GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

160bit

Memory Bus

256bit

320.0GB/s

Bandwidth

57.66GB/s

Render Config

-

SM Count

-

36

Compute Units

4

2304

Shading Units

320

144

TMUs

16

64

ROPs

16

-

Tensor Cores

-

36

RT Cores

-

128 KB per Array

L1 Cache

-

3 MB

L2 Cache

256 KB

Theoretical Performance

156.8 GPixel/s

Pixel Rate

13.20 GPixel/s

352.8 GTexel/s

Texture Rate

13.20 GTexel/s

22.58 TFLOPS

FP16 (half)

-

11.29 TFLOPS

FP32 (float)

528.0 GFLOPS

705.6 GFLOPS

FP64 (double)

105.6 GFLOPS

Graphics Processor

Navi 22

GPU Name

R680

Navi 22 XTL

GPU Variant

R680 XT (215-0708017)

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

Board Design

175W

TDP

165W

450 W

Suggested PSU

450 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 + 1x 8-pin

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

-

CUDA

-

6.5

Shader Model

4.1

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