AMD Radeon HD 6750 vs ATI Radeon HD 4870 Mac Edition

VS

AMD Radeon HD 6750

ATI Radeon HD 4870 Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6750 and 512MB VRAM Radeon HD 4870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6750 's Advantages

Released 2 years late

More VRAM (1024GB vs 512GB)

Lower TDP (86W vs 150W)

ATI Radeon HD 4870 Mac Edition 's Advantages

Larger VRAM bandwidth (108.8GB/s vs 73.60GB/s)

80 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6750

1.008 TFLOPS

Radeon HD 4870 Mac Edition +19%

1.2 TFLOPS

Radeon HD 6750

VS

Radeon HD 4870 Mac Edition

Graphics Card

Jan 2011

Release Date

Jan 2009

Northern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1150 MHz

Memory Clock

850 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

73.60GB/s

Bandwidth

108.8GB/s

Render Config

9

Compute Units

10

-

720

Shading Units

800

36

TMUs

40

16

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

11.20 GPixel/s

Pixel Rate

12.00 GPixel/s

25.20 GTexel/s

Texture Rate

30.00 GTexel/s

-

1008 GFLOPS

FP32 (float)

1200 GFLOPS

-

FP64 (double)

240.0 GFLOPS

Board Design

86W

TDP

150W

250 W

Suggested PSU

450 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

1x DVI 1x mini-DisplayPort 1.0

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Juniper

GPU Name

RV770

Juniper LE (215-0754009)

GPU Variant

RV770 XT Mac (215-0669080)

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.04 billion

Transistors

0.956 billion

166 mm²

Die Size

256 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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