ATI Radeon HD 4860 vs NVIDIA GeForce GTX 660 OEM

VS

ATI Radeon HD 4860

NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4860 and 1536MB VRAM GeForce GTX 660 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 OEM 's Advantages

Released 2 years and 11 months late

Boost Clock888MHz

More VRAM (1536GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 96.00GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4860

0.896 TFLOPS

GeForce GTX 660 OEM +128%

2.046 TFLOPS

Radeon HD 4860

VS

GeForce GTX 660 OEM

Graphics Card

Sep 2009

Release Date

Aug 2012

Radeon R700

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

823 MHz

-

Boost Clock

888 MHz

750 MHz

Memory Clock

1400 MHz

Memory

512MB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

96.00GB/s

Bandwidth

134.4GB/s

Render Config

8

Compute Units

-

640

Shading Units

1152

32

TMUs

96

16

ROPs

24

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

384 KB

-

Theoretical Performance

11.20 GPixel/s

Pixel Rate

21.31 GPixel/s

22.40 GTexel/s

Texture Rate

85.25 GTexel/s

-

896.0 GFLOPS

FP32 (float)

2.046 TFLOPS

179.2 GFLOPS

FP64 (double)

85.25 GFLOPS

Board Design

130W

TDP

130W

300 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV790

GPU Name

GK104

RV790 GT

GPU Variant

GK104-200-KD-A2

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.959 billion

Transistors

3.54 billion

282 mm²

Die Size

294 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

4.1

Shader Model

5.1

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