NVIDIA GeForce GTX 660 Rev. 2 vs ATI FirePro V7770

VS

NVIDIA GeForce GTX 660 Rev. 2

ATI FirePro V7770

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 1024MB VRAM FirePro V7770 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Released 2 years and 8 months late

Boost Clock1032MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (144.2GB/s vs 33.60GB/s)

160 additional rendering cores

ATI FirePro V7770 's Advantages

Lower TDP (76W vs 140W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2 +98%

1.981 TFLOPS

FirePro V7770

1 TFLOPS

GeForce GTX 660 Rev. 2

VS

FirePro V7770

Graphics Card

Sep 2014

Release Date

Jan 2012

GeForce 600

Generation

FirePro

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

1050 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR4

192bit

Memory Bus

128bit

144.2GB/s

Bandwidth

33.60GB/s

Render Config

-

Compute Units

10

-

960

Shading Units

800

80

TMUs

40

24

ROPs

8

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

128 KB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

5.000 GPixel/s

82.56 GTexel/s

Texture Rate

25.00 GTexel/s

-

1.981 TFLOPS

FP32 (float)

1000 GFLOPS

82.56 GFLOPS

FP64 (double)

-

Board Design

140W

TDP

76W

300 W

Suggested PSU

250 W

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

Outputs

1x DVI

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

GK104

GPU Name

RV770

-

GPU Variant

RV770 XT (215-0669049)

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

3.54 billion

Transistors

0.956 billion

294 mm²

Die Size

256 mm²

Graphics Features

12 (11_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.1

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