NVIDIA GeForce GTX 660 OEM vs AMD Radeon R9 295X2

VS

NVIDIA GeForce GTX 660 OEM

AMD Radeon R9 295X2

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 660 OEM and 4GB VRAM Radeon R9 295X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 OEM 's Advantages

Boost Clock888MHz

Lower TDP (130W vs 500W)

AMD Radeon R9 295X2 's Advantages

Released 1 years and 8 months late

More VRAM (4GB vs 1536GB)

Larger VRAM bandwidth (320.0GB/s vs 134.4GB/s)

1664 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 OEM

2.046 TFLOPS

Radeon R9 295X2 +180%

5.733 TFLOPS

GeForce GTX 660 OEM

VS

Radeon R9 295X2

Graphics Card

Aug 2012

Release Date

Apr 2014

GeForce 600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

823 MHz

Base Clock

-

888 MHz

Boost Clock

-

1400 MHz

Memory Clock

1250 MHz

Memory

1536MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

512bit

134.4GB/s

Bandwidth

320.0GB/s

Render Config

-

Compute Units

44

-

1152

Shading Units

2816

96

TMUs

176

24

ROPs

64

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

1024 KB

-

Theoretical Performance

21.31 GPixel/s

Pixel Rate

65.15 GPixel/s

85.25 GTexel/s

Texture Rate

179.2 GTexel/s

-

2.046 TFLOPS

FP32 (float)

5.733 TFLOPS

85.25 GFLOPS

FP64 (double)

716.7 GFLOPS

Board Design

130W

TDP

500W

300 W

Suggested PSU

900 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

GK104

GPU Name

Vesuvius

GK104-200-KD-A2

GPU Variant

Vesuvius XT (215-0852022)

Kepler

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

6.2 billion

294 mm²

Die Size

438 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.3

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