NVIDIA GeForce GTX 660 Rev. 2 vs ATI Radeon HD 2900 PRO

VS

NVIDIA GeForce GTX 660 Rev. 2 ATI Radeon HD 2900 PRO

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 512MB VRAM Radeon HD 2900 PRO 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 6 years and 9 months late

Boost Clock1032MHz

Larger VRAM bandwidth (144.2GB/s vs 51.20GB/s)

640 additional rendering cores

Lower TDP (140W vs 200W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2 +415%

1.981 TFLOPS

Radeon HD 2900 PRO

0.384 TFLOPS

GeForce GTX 660 Rev. 2

VS

Radeon HD 2900 PRO

Graphics Card

Sep 2014

Release Date

Dec 2007

GeForce 600

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

256bit

144.2GB/s

Bandwidth

51.20GB/s

Render Config

-

SM Count

-

Compute Units

4

960

Shading Units

320

80

TMUs

16

24

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

-

384 KB

L2 Cache

128 KB

Theoretical Performance

20.64 GPixel/s

Pixel Rate

9.600 GPixel/s

82.56 GTexel/s

Texture Rate

9.600 GTexel/s

-

FP16 (half)

-

1.981 TFLOPS

FP32 (float)

384.0 GFLOPS

82.56 GFLOPS

FP64 (double)

-

Graphics Processor

GK104

GPU Name

R600

-

GPU Variant

R600 PRO (215RGMDKA13FG)

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

3.54 billion

Transistors

0.72 billion

294 mm²

Die Size

420 mm²

Board Design

140W

TDP

200W

300 W

Suggested PSU

550 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 8-pin

Graphics Features

12 (11_0)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3 (full) 4.0 (partial)

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.0

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