ATI Radeon HD 3870 AGP vs AMD Radeon HD 6850 1440SP Edition

VS

ATI Radeon HD 3870 AGP

AMD Radeon HD 6850 1440SP Edition

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 AGP and 1024MB VRAM Radeon HD 6850 1440SP Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3870 AGP 's Advantages

Lower TDP (106W vs 151W)

AMD Radeon HD 6850 1440SP Edition 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (128.0GB/s vs 72.06GB/s)

1120 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 3870 AGP

0.497 TFLOPS

Radeon HD 6850 1440SP Edition +320%

2.088 TFLOPS

Radeon HD 3870 AGP

VS

Radeon HD 6850 1440SP Edition

Graphics Card

Unknown

Release Date

Aug 2012

Radeon R600

Generation

Northern Islands

Desktop

Type

Desktop

AGP 8x

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

1024MB

GDDR4

Memory Type

GDDR5

256bit

Memory Bus

256bit

72.06GB/s

Bandwidth

128.0GB/s

Render Config

4

Compute Units

18

-

320

Shading Units

1440

16

TMUs

72

16

ROPs

32

-

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

23.20 GPixel/s

12.43 GTexel/s

Texture Rate

52.20 GTexel/s

-

497.3 GFLOPS

FP32 (float)

2.088 TFLOPS

99.46 GFLOPS

FP64 (double)

417.6 GFLOPS

Board Design

106W

TDP

151W

300 W

Suggested PSU

450 W

2x DVI 1x S-Video

Outputs

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

1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

RV670

GPU Name

Cypress

RV670 XT (215-0708005)

GPU Variant

Cypress PRO (215-0735043)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

2.154 billion

192 mm²

Die Size

334 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3 (full) 4.0 (partial)

OpenGL

4.4

N/A

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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