ATI Radeon HD 4850 vs ATI Radeon HD 3870 Mac Edition

VS

ATI Radeon HD 4850

ATI Radeon HD 3870 Mac Edition

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4850 and 512MB VRAM Radeon HD 3870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4850 's Advantages

480 additional rendering cores

ATI Radeon HD 3870 Mac Edition 's Advantages

Larger VRAM bandwidth (72.06GB/s vs 63.55GB/s)

Lower TDP (106W vs 110W)

Score

Benchmark

FP32 (float)

Radeon HD 4850 +101%

1 TFLOPS

Radeon HD 3870 Mac Edition

0.497 TFLOPS

Radeon HD 4850

VS

Radeon HD 3870 Mac Edition

Graphics Card

Jun 2008

Release Date

Jun 2008

Radeon R700

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

993 MHz

Memory Clock

1126 MHz

Memory

512MB

Memory Size

512MB

GDDR3

Memory Type

GDDR4

256bit

Memory Bus

256bit

63.55GB/s

Bandwidth

72.06GB/s

Render Config

10

Compute Units

4

-

800

Shading Units

320

40

TMUs

16

ROPs

16

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.00 GPixel/s

Pixel Rate

12.43 GPixel/s

25.00 GTexel/s

Texture Rate

12.43 GTexel/s

-

1000 GFLOPS

FP32 (float)

497.3 GFLOPS

200.0 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

110W

TDP

106W

300 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV770

GPU Name

RV670

RV770 PRO (215-0669065)

GPU Variant

RV670 XT (215-0708005)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.956 billion

Transistors

0.666 billion

256 mm²

Die Size

192 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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