AMD Radeon HD 8970 OEM vs ATI Radeon HD 3870 AGP

VS

AMD Radeon HD 8970 OEM

ATI Radeon HD 3870 AGP

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8970 OEM and 512MB VRAM Radeon HD 3870 AGP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970 OEM 's Advantages

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (264.0GB/s vs 72.06GB/s)

1728 additional rendering cores

ATI Radeon HD 3870 AGP 's Advantages

Lower TDP (106W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 8970 OEM +662%

3.789 TFLOPS

Radeon HD 3870 AGP

0.497 TFLOPS

Radeon HD 8970 OEM

VS

Radeon HD 3870 AGP

Graphics Card

Jan 2013

Release Date

Unknown

Sea Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

AGP 8x

Clock Speeds

-

1375 MHz

Memory Clock

1126 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

GDDR4

384bit

Memory Bus

256bit

264.0GB/s

Bandwidth

72.06GB/s

Render Config

32

Compute Units

4

-

2048

Shading Units

320

128

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

256 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

12.43 GPixel/s

118.4 GTexel/s

Texture Rate

12.43 GTexel/s

-

3.789 TFLOPS

FP32 (float)

497.3 GFLOPS

947.2 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

250W

TDP

106W

600 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Tahiti

GPU Name

RV670

Tahiti XT (215-0821060)

GPU Variant

RV670 XT (215-0708005)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.666 billion

352 mm²

Die Size

192 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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