AMD Radeon HD 7770 GHz Edition vs NVIDIA GeForce GTX 660 OEM

VS

AMD Radeon HD 7770 GHz Edition NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7770 GHz Edition 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 7770 GHz Edition 's Advantages

Lower TDP (80W vs 130W)

NVIDIA GeForce GTX 660 OEM 's Advantages

Released 6 months late

Boost Clock888MHz

More VRAM (1536GB vs 1024GB)

Larger VRAM bandwidth (134.4GB/s vs 72.00GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7770 GHz Edition

1.28 TFLOPS

GeForce GTX 660 OEM +59%

2.046 TFLOPS

Radeon HD 7770 GHz Edition

VS

GeForce GTX 660 OEM

Graphics Card

Feb 2012

Release Date

Aug 2012

Southern 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

1125 MHz

Memory Clock

1400 MHz

Memory

1024MB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

192bit

72.00GB/s

Bandwidth

134.4GB/s

Render Config

-

SM Count

-

10

Compute Units

-

640

Shading Units

1152

40

TMUs

96

16

ROPs

24

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

384 KB

Theoretical Performance

16.00 GPixel/s

Pixel Rate

21.31 GPixel/s

40.00 GTexel/s

Texture Rate

85.25 GTexel/s

-

FP16 (half)

-

1280 GFLOPS

FP32 (float)

2.046 TFLOPS

80.00 GFLOPS

FP64 (double)

85.25 GFLOPS

Graphics Processor

Cape Verde

GPU Name

GK104

Cape Verde XT

GPU Variant

GK104-200-KD-A2

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

3.54 billion

123 mm²

Die Size

294 mm²

Board Design

80W

TDP

130W

250 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

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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