NVIDIA GeForce GTX 660 Ti vs AMD Radeon HD 7870 XT

VS

NVIDIA GeForce GTX 660 Ti

AMD Radeon HD 7870 XT

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Ti and 2GB VRAM Radeon HD 7870 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Ti 's Advantages

Boost Clock has increased by 1% (980MHz vs 975MHz)

Lower TDP (150W vs 185W)

AMD Radeon HD 7870 XT 's Advantages

Larger VRAM bandwidth (192.0GB/s vs 144.2GB/s)

192 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 Ti

2.634 TFLOPS

Radeon HD 7870 XT +13%

2.995 TFLOPS

GeForce GTX 660 Ti

VS

Radeon HD 7870 XT

Graphics Card

Aug 2012

Release Date

Nov 2012

GeForce 600

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

915 MHz

Base Clock

925 MHz

980 MHz

Boost Clock

975 MHz

1502 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

256bit

144.2GB/s

Bandwidth

192.0GB/s

Render Config

-

Compute Units

24

-

1344

Shading Units

1536

112

TMUs

96

24

ROPs

32

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

512 KB

-

Theoretical Performance

27.44 GPixel/s

Pixel Rate

31.20 GPixel/s

109.8 GTexel/s

Texture Rate

93.60 GTexel/s

-

2.634 TFLOPS

FP32 (float)

2.995 TFLOPS

109.8 GFLOPS

FP64 (double)

748.8 GFLOPS

Board Design

150W

TDP

185W

450 W

Suggested PSU

450 W

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

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

GK104

GPU Name

Tahiti

GK104-300-KD-A2

GPU Variant

Tahiti LE (215-0821122)

Kepler

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

4.313 billion

294 mm²

Die Size

352 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

5.1

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