AMD Radeon Sky 500 vs ATI Radeon HD 3870 X2

VS

AMD Radeon Sky 500 ATI Radeon HD 3870 X2

We compared two Desktop platform GPUs: 4GB VRAM Radeon Sky 500 and 512MB VRAM Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Sky 500 's Advantages

Released 5 years and 2 months late

Larger VRAM bandwidth (153.6GB/s vs 57.66GB/s)

960 additional rendering cores

Lower TDP (150W vs 165W)

Score

Benchmark

FP32 (float)

Radeon Sky 500 +360%

2.432 TFLOPS

Radeon HD 3870 X2

0.528 TFLOPS

Radeon Sky 500

VS

Radeon HD 3870 X2

Graphics Card

Mar 2013

Release Date

Jan 2008

Radeon Sky

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1200 MHz

Memory Clock

901 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

57.66GB/s

Render Config

-

SM Count

-

20

Compute Units

4

1280

Shading Units

320

80

TMUs

16

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

Theoretical Performance

30.40 GPixel/s

Pixel Rate

13.20 GPixel/s

76.00 GTexel/s

Texture Rate

13.20 GTexel/s

-

FP16 (half)

-

2.432 TFLOPS

FP32 (float)

528.0 GFLOPS

152.0 GFLOPS

FP64 (double)

105.6 GFLOPS

Graphics Processor

Pitcairn

GPU Name

R680

Pitcairn XT GL (215-0828073)

GPU Variant

R680 XT (215-0708017)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.666 billion

212 mm²

Die Size

192 mm²

Board Design

150W

TDP

165W

450 W

Suggested PSU

450 W

1x DisplayPort 1.2

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

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

-

CUDA

-

5.1

Shader Model

4.1

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