AMD Radeon HD 7790 vs AMD Radeon R9 280X

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7790 and 3GB VRAM Radeon R9 280X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7790 's Advantages

Lower TDP (85W vs 250W)

AMD Radeon R9 280X 's Advantages

Released 7 months late

Boost Clock1000MHz

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (288.0GB/s vs 96.00GB/s)

1152 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7790

1.792 TFLOPS

Radeon R9 280X +128%

4.096 TFLOPS

Radeon HD 7790

VS

Radeon R9 280X

Graphics Card

Mar 2013

Release Date

Oct 2013

Southern Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

1000 MHz

1500 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

384bit

96.00GB/s

Bandwidth

288.0GB/s

Render Config

-

SM Count

-

14

Compute Units

32

896

Shading Units

2048

56

TMUs

128

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

Theoretical Performance

16.00 GPixel/s

Pixel Rate

32.00 GPixel/s

56.00 GTexel/s

Texture Rate

128.0 GTexel/s

-

FP16 (half)

-

1.792 TFLOPS

FP32 (float)

4.096 TFLOPS

112.0 GFLOPS

FP64 (double)

1024 GFLOPS

Graphics Processor

Bonaire

GPU Name

Tahiti

Bonaire XT (215-0839039)

GPU Variant

Tahiti XTL (215-0821065)

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

4.313 billion

160 mm²

Die Size

352 mm²

Board Design

85W

TDP

250W

250 W

Suggested PSU

600 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

6.3

Shader Model

5.1

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