ATI Radeon HD 4870 vs AMD Radeon HD 7970 GHz Edition

VS

ATI Radeon HD 4870

AMD Radeon HD 7970 GHz Edition

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 3GB VRAM Radeon HD 7970 GHz Edition 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 300W)

AMD Radeon HD 7970 GHz Edition 's Advantages

Released 4 years late

Boost Clock1050MHz

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (288.0GB/s vs 115.2GB/s)

1248 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4870

1.2 TFLOPS

Radeon HD 7970 GHz Edition +258%

4.301 TFLOPS

Radeon HD 4870

VS

Radeon HD 7970 GHz Edition

Graphics Card

Jun 2008

Release Date

Jun 2012

Radeon R700

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1050 MHz

900 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

115.2GB/s

Bandwidth

288.0GB/s

Render Config

10

Compute Units

32

-

800

Shading Units

2048

40

TMUs

128

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

33.60 GPixel/s

30.00 GTexel/s

Texture Rate

134.4 GTexel/s

-

1200 GFLOPS

FP32 (float)

4.301 TFLOPS

240.0 GFLOPS

FP64 (double)

1075 GFLOPS

Board Design

150W

TDP

300W

450 W

Suggested PSU

700 W

2x DVI 1x S-Video

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

RV770

GPU Name

Tahiti

RV770 XT (215-0669049)

GPU Variant

Tahiti XT2 (215-0821065)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

4.313 billion

256 mm²

Die Size

352 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

-

4.1

Shader Model

5.1

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