AMD Radeon HD 7720 OEM vs NVIDIA GeForce GTX 660

VS

AMD Radeon HD 7720 OEM

NVIDIA GeForce GTX 660

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7720 OEM and 2GB VRAM GeForce GTX 660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7720 OEM 's Advantages

Released 6 months late

NVIDIA GeForce GTX 660 's Advantages

Boost Clock1032MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (144.2GB/s vs 134.4GB/s)

160 additional rendering cores

Lower TDP (140W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 7720 OEM

1.344 TFLOPS

GeForce GTX 660 +47%

1.981 TFLOPS

Radeon HD 7720 OEM

VS

GeForce GTX 660

Graphics Card

Mar 2013

Release Date

Sep 2012

Southern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

980 MHz

-

Boost Clock

1032 MHz

1050 MHz

Memory Clock

1502 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

134.4GB/s

Bandwidth

144.2GB/s

Render Config

10

Compute Units

-

800

Shading Units

960

40

TMUs

80

32

ROPs

24

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

384 KB

-

Theoretical Performance

26.88 GPixel/s

Pixel Rate

20.64 GPixel/s

33.60 GTexel/s

Texture Rate

82.56 GTexel/s

-

1344 GFLOPS

FP32 (float)

1.981 TFLOPS

-

FP64 (double)

82.56 GFLOPS

Board Design

150W

TDP

140W

450 W

Suggested PSU

300 W

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

Outputs

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

-

Power Connectors

1x 6-pin

Graphics Processor

Barts

GPU Name

GK106

Barts LE (215-0798002)

GPU Variant

GK106-400-A1

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

2.54 billion

255 mm²

Die Size

221 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

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