AMD Radeon R9 280 vs ATI Radeon HD 3870 X2

VS

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280 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 R9 280 's Advantages

Released 6 years and 2 months late

Boost Clock933MHz

Larger VRAM bandwidth (240.0GB/s vs 57.66GB/s)

1472 additional rendering cores

ATI Radeon HD 3870 X2 's Advantages

Lower TDP (165W vs 200W)

Score

Benchmark

FP32 (float)

Radeon R9 280 +533%

3.344 TFLOPS

Radeon HD 3870 X2

0.528 TFLOPS

Radeon R9 280

VS

Radeon HD 3870 X2

Graphics Card

Mar 2014

Release Date

Jan 2008

Volcanic Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

827 MHz

Base Clock

-

933 MHz

Boost Clock

-

1250 MHz

Memory Clock

901 MHz

Memory

3GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

256bit

240.0GB/s

Bandwidth

57.66GB/s

Render Config

-

SM Count

-

28

Compute Units

4

1792

Shading Units

320

112

TMUs

16

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

256 KB

Theoretical Performance

29.86 GPixel/s

Pixel Rate

13.20 GPixel/s

104.5 GTexel/s

Texture Rate

13.20 GTexel/s

-

FP16 (half)

-

3.344 TFLOPS

FP32 (float)

528.0 GFLOPS

836.0 GFLOPS

FP64 (double)

105.6 GFLOPS

Graphics Processor

Tahiti

GPU Name

R680

Tahiti PRO3 (215-0821330)

GPU Variant

R680 XT (215-0708017)

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

Board Design

200W

TDP

165W

550 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin + 1x 8-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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