ATI Radeon HD 3870 vs AMD Radeon HD 6970 X2

VS

ATI Radeon HD 3870 AMD Radeon HD 6970 X2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 and 2GB VRAM Radeon HD 6970 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3870 's Advantages

Lower TDP (106W vs 375W)

AMD Radeon HD 6970 X2 's Advantages

Larger VRAM bandwidth (176.0GB/s vs 72.06GB/s)

1216 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 3870

0.497 TFLOPS

Radeon HD 6970 X2 +443%

2.703 TFLOPS

Radeon HD 3870

VS

Radeon HD 6970 X2

Graphics Card

Nov 2007

Release Date

Unknown

Radeon R600

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1126 MHz

Memory Clock

1375 MHz

Memory

512MB

Memory Size

2GB

GDDR4

Memory Type

GDDR5

256bit

Memory Bus

256bit

72.06GB/s

Bandwidth

176.0GB/s

Render Config

-

SM Count

-

4

Compute Units

24

320

Shading Units

1536

16

TMUs

96

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

Theoretical Performance

12.43 GPixel/s

Pixel Rate

28.16 GPixel/s

12.43 GTexel/s

Texture Rate

84.48 GTexel/s

-

FP16 (half)

-

497.3 GFLOPS

FP32 (float)

2.703 TFLOPS

99.46 GFLOPS

FP64 (double)

-

Graphics Processor

RV670

GPU Name

Antilles

RV670 XT (215-0708005)

GPU Variant

Antilles XT (215-0807027)

TeraScale

Architecture

TeraScale 3

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

2.64 billion

192 mm²

Die Size

389 mm²

Board Design

106W

TDP

375W

300 W

Suggested PSU

750 W

2x DVI 1x S-Video

Outputs

2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

3x 8-pin

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3 (full) 4.0 (partial)

OpenGL

4.4

N/A

OpenCL

1.2

N/A

Vulkan

N/A

-

CUDA

-

4.1

Shader Model

5.0

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