AMD Radeon R9 280 vs AMD Radeon HD 6790

VS

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280 and 1024MB VRAM Radeon HD 6790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 280 's Advantages

Released 2 years and 11 months late

Boost Clock933MHz

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (240.0GB/s vs 134.4GB/s)

992 additional rendering cores

AMD Radeon HD 6790 's Advantages

Lower TDP (150W vs 200W)

Score

Benchmark

FP32 (float)

Radeon R9 280 +148%

3.344 TFLOPS

Radeon HD 6790

1.344 TFLOPS

Radeon R9 280

VS

Radeon HD 6790

Graphics Card

Mar 2014

Release Date

Apr 2011

Volcanic Islands

Generation

Northern Islands

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

1050 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

240.0GB/s

Bandwidth

134.4GB/s

Render Config

-

SM Count

-

28

Compute Units

10

1792

Shading Units

800

112

TMUs

40

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

512 KB

Theoretical Performance

29.86 GPixel/s

Pixel Rate

13.44 GPixel/s

104.5 GTexel/s

Texture Rate

33.60 GTexel/s

-

FP16 (half)

-

3.344 TFLOPS

FP32 (float)

1344 GFLOPS

836.0 GFLOPS

FP64 (double)

-

Graphics Processor

Tahiti

GPU Name

Barts

Tahiti PRO3 (215-0821330)

GPU Variant

Barts LE (215-0798002)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

1.7 billion

352 mm²

Die Size

255 mm²

Board Design

200W

TDP

150W

550 W

Suggested PSU

450 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 6-pin

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

5.0

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