AMD Radeon R9 270 1024SP vs NVIDIA GeForce GTX 660 OEM

VS

AMD Radeon R9 270 1024SP

NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 1024SP 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 R9 270 1024SP 's Advantages

Released 2 years and 7 months late

Boost Clock has increased by 4% (925MHz vs 888MHz)

More VRAM (2GB vs 1536GB)

Larger VRAM bandwidth (153.6GB/s vs 134.4GB/s)

NVIDIA GeForce GTX 660 OEM 's Advantages

128 additional rendering cores

Lower TDP (130W vs 150W)

Score

Benchmark

FP32 (float)

Radeon R9 270 1024SP

1.894 TFLOPS

GeForce GTX 660 OEM +8%

2.046 TFLOPS

Radeon R9 270 1024SP

VS

GeForce GTX 660 OEM

Graphics Card

Mar 2015

Release Date

Aug 2012

Volcanic Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

823 MHz

925 MHz

Boost Clock

888 MHz

1200 MHz

Memory Clock

1400 MHz

Memory

2GB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

153.6GB/s

Bandwidth

134.4GB/s

Render Config

16

Compute Units

-

1024

Shading Units

1152

64

TMUs

96

32

ROPs

24

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

384 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

21.31 GPixel/s

59.20 GTexel/s

Texture Rate

85.25 GTexel/s

-

1.894 TFLOPS

FP32 (float)

2.046 TFLOPS

118.4 GFLOPS

FP64 (double)

85.25 GFLOPS

Board Design

150W

TDP

130W

450 W

Suggested PSU

300 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Pitcairn

GPU Name

GK104

Pitcairn PRO (215-0828062)

GPU Variant

GK104-200-KD-A2

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

3.54 billion

212 mm²

Die Size

294 mm²

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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