AMD Radeon HD 7790 vs AMD Radeon HD 8970 OEM

VS

AMD Radeon HD 7790

AMD Radeon HD 8970 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7790 and 3GB VRAM Radeon HD 8970 OEM 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 HD 8970 OEM 's Advantages

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (264.0GB/s vs 96.00GB/s)

1152 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7790

1.792 TFLOPS

Radeon HD 8970 OEM +111%

3.789 TFLOPS

Radeon HD 7790

VS

Radeon HD 8970 OEM

Graphics Card

Mar 2013

Release Date

Jan 2013

Southern Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

1375 MHz

Memory

1024MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

384bit

96.00GB/s

Bandwidth

264.0GB/s

Render Config

14

Compute Units

32

-

896

Shading Units

2048

56

TMUs

128

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

29.60 GPixel/s

56.00 GTexel/s

Texture Rate

118.4 GTexel/s

-

1.792 TFLOPS

FP32 (float)

3.789 TFLOPS

112.0 GFLOPS

FP64 (double)

947.2 GFLOPS

Board Design

85W

TDP

250W

250 W

Suggested PSU

600 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Bonaire

GPU Name

Tahiti

Bonaire XT (215-0839039)

GPU Variant

Tahiti XT (215-0821060)

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

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

6.3

Shader Model

5.1

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