ATI Radeon HD 4870 vs AMD Radeon HD 6970 X2

VS

ATI Radeon HD 4870 AMD Radeon HD 6970 X2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 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 4870 's Advantages

Lower TDP (150W vs 375W)

AMD Radeon HD 6970 X2 's Advantages

Larger VRAM bandwidth (176.0GB/s vs 115.2GB/s)

736 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4870

1.2 TFLOPS

Radeon HD 6970 X2 +125%

2.703 TFLOPS

Radeon HD 4870

VS

Radeon HD 6970 X2

Graphics Card

Jun 2008

Release Date

Unknown

Radeon R700

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

1375 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

115.2GB/s

Bandwidth

176.0GB/s

Render Config

-

SM Count

-

10

Compute Units

24

800

Shading Units

1536

40

TMUs

96

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

Theoretical Performance

12.00 GPixel/s

Pixel Rate

28.16 GPixel/s

30.00 GTexel/s

Texture Rate

84.48 GTexel/s

-

FP16 (half)

-

1200 GFLOPS

FP32 (float)

2.703 TFLOPS

240.0 GFLOPS

FP64 (double)

-

Graphics Processor

RV770

GPU Name

Antilles

RV770 XT (215-0669049)

GPU Variant

Antilles XT (215-0807027)

TeraScale

Architecture

TeraScale 3

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.956 billion

Transistors

2.64 billion

256 mm²

Die Size

389 mm²

Board Design

150W

TDP

375W

450 W

Suggested PSU

750 W

2x DVI 1x S-Video

Outputs

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

2x 6-pin

Power Connectors

3x 8-pin

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

CUDA

-

4.1

Shader Model

5.0

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