AMD Radeon Sky 700 vs ATI Radeon HD 3870 AGP

VS

AMD Radeon Sky 700

ATI Radeon HD 3870 AGP

We compared two Desktop platform GPUs: 6GB VRAM Radeon Sky 700 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 Sky 700 's Advantages

More VRAM (6GB vs 512GB)

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

1472 additional rendering cores

ATI Radeon HD 3870 AGP 's Advantages

Lower TDP (106W vs 225W)

Score

Benchmark

FP32 (float)

Radeon Sky 700 +549%

3.226 TFLOPS

Radeon HD 3870 AGP

0.497 TFLOPS

Radeon Sky 700

VS

Radeon HD 3870 AGP

Graphics Card

Mar 2013

Release Date

Unknown

Radeon Sky

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

AGP 8x

Clock Speeds

-

1375 MHz

Memory Clock

1126 MHz

Memory

6GB

Memory Size

512MB

GDDR5

Memory Type

GDDR4

384bit

Memory Bus

256bit

264.0GB/s

Bandwidth

72.06GB/s

Render Config

28

Compute Units

4

-

1792

Shading Units

320

112

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

256 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

12.43 GPixel/s

100.8 GTexel/s

Texture Rate

12.43 GTexel/s

-

3.226 TFLOPS

FP32 (float)

497.3 GFLOPS

806.4 GFLOPS

FP64 (double)

99.46 GFLOPS

Board Design

225W

TDP

106W

550 W

Suggested PSU

300 W

1x DisplayPort 1.2

Outputs

2x DVI 1x S-Video

1x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Tahiti

GPU Name

RV670

Tahiti PRO GL

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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