AMD Radeon HD 8970 OEM vs NVIDIA GeForce GTX 660 OEM

VS

AMD Radeon HD 8970 OEM NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8970 OEM and 1536MB VRAM GeForce GTX 660 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970 OEM 's Advantages

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (264.0GB/s vs 134.4GB/s)

896 additional rendering cores

NVIDIA GeForce GTX 660 OEM 's Advantages

Boost Clock888MHz

Lower TDP (130W vs 250W)

Score

Benchmark

FP32 (float)

Radeon HD 8970 OEM +85%

3.789 TFLOPS

GeForce GTX 660 OEM

2.046 TFLOPS

Radeon HD 8970 OEM

VS

GeForce GTX 660 OEM

Graphics Card

Jan 2013

Release Date

Aug 2012

Sea Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

823 MHz

-

Boost Clock

888 MHz

1375 MHz

Memory Clock

1400 MHz

Memory

3GB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

264.0GB/s

Bandwidth

134.4GB/s

Render Config

-

SM Count

-

32

Compute Units

-

2048

Shading Units

1152

128

TMUs

96

32

ROPs

24

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

768 KB

L2 Cache

384 KB

Theoretical Performance

29.60 GPixel/s

Pixel Rate

21.31 GPixel/s

118.4 GTexel/s

Texture Rate

85.25 GTexel/s

-

FP16 (half)

-

3.789 TFLOPS

FP32 (float)

2.046 TFLOPS

947.2 GFLOPS

FP64 (double)

85.25 GFLOPS

Graphics Processor

Tahiti

GPU Name

GK104

Tahiti XT (215-0821060)

GPU Variant

GK104-200-KD-A2

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

3.54 billion

352 mm²

Die Size

294 mm²

Board Design

250W

TDP

130W

600 W

Suggested PSU

300 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 + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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