ATI Radeon HD 4870 vs ATI Radeon HD 4860

VS

ATI Radeon HD 4870

ATI Radeon HD 4860

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 512MB VRAM Radeon HD 4860 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 96.00GB/s)

160 additional rendering cores

ATI Radeon HD 4860 's Advantages

Released 1 years and 3 months late

Lower TDP (130W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 +33%

1.2 TFLOPS

Radeon HD 4860

0.896 TFLOPS

Radeon HD 4870

VS

Radeon HD 4860

Graphics Card

Jun 2008

Release Date

Sep 2009

Radeon R700

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

750 MHz

Memory

512MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

115.2GB/s

Bandwidth

96.00GB/s

Render Config

10

Compute Units

8

-

800

Shading Units

640

40

TMUs

32

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

11.20 GPixel/s

30.00 GTexel/s

Texture Rate

22.40 GTexel/s

-

1200 GFLOPS

FP32 (float)

896.0 GFLOPS

240.0 GFLOPS

FP64 (double)

179.2 GFLOPS

Board Design

150W

TDP

130W

450 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

RV770

GPU Name

RV790

RV770 XT (215-0669049)

GPU Variant

RV790 GT

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.956 billion

Transistors

0.959 billion

256 mm²

Die Size

282 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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